[Git][ghc/ghc][wip/romes/hadrian-cross-stage2-rebase_SVEN_FINAL] 10 commits: hadrian: Build stage 2 cross compilers
by Sven Tennie (＠supersven) 31 Dec '25
by Sven Tennie (＠supersven) 31 Dec '25
31 Dec '25
Sven Tennie pushed to branch wip/romes/hadrian-cross-stage2-rebase_SVEN_FINAL at Glasgow Haskell Compiler / GHC
Commits:
b106d68d by Matthew Pickering at 2025-12-30T21:50:28+01:00
hadrian: Build stage 2 cross compilers
* Most of hadrian is abstracted over the stage in order to remove the
assumption that the target of all stages is the same platform. This
allows the RTS to be built for two different targets for example.
* Abstracts the bindist creation logic to allow building either normal
or cross bindists. Normal bindists use stage 1 libraries and a stage 2
compiler. Cross bindists use stage 2 libararies and a stage 2
compiler.
* hadrian: Make binary-dist-dir the default build target. This allows us
to have the logic in one place about which libraries/stages to build
with cross compilers. Fixes #24192
New hadrian target:
* `binary-dist-dir-cross`: Build a cross compiler bindist (compiler =
stage 1, libraries = stage 2)
This commit also contains various changes to make stage2 compilers
feasible.
-------------------------
Metric Decrease:
ManyAlternatives
MultiComponentModulesRecomp
MultiLayerModulesRecomp
T10421
T12425
T12707
T13035
T13379
T15703
T16577
T18698a
T18698b
T18923
T1969
T21839c
T3294
T4801
T5030
T5321Fun
T5642
T783
T9198
T9872d
T9961
parsing001
-------------------------
Co-authored-by: Sven Tennie <sven.tennie(a)gmail.com>
Format
Cleanup
- - - - -
7b29fab7 by Sven Tennie at 2025-12-30T21:50:28+01:00
Align CI scripts with master
Fixup
- - - - -
4d616b9f by Matthew Pickering at 2025-12-30T21:50:28+01:00
ci: Test cross bindists
We remove the special logic for testing in-tree cross
compilers and instead test cross compiler bindists, like we do for all
other platforms.
- - - - -
f25b4400 by Matthew Pickering at 2025-12-30T21:50:28+01:00
ci: Introduce CROSS_STAGE variable
In preparation for building and testing stage3 bindists we introduce the
CROSS_STAGE variable which is used by a CI job to determine what kind of
bindist the CI job should produce.
At the moment we are only using CROSS_STAGE=2 but in the future we will
have some jobs which set CROSS_STAGE=3 to produce native bindists for a
target, but produced by a cross compiler, which can be tested on by
another CI job on the native platform.
CROSS_STAGE=2: Build a normal cross compiler bindist
CROSS_STAGE=3: Build a stage 3 bindist, one which is a native compiler and library for the target
- - - - -
7d299c8d by Matthew Pickering at 2025-12-30T21:50:28+01:00
hadrian: Refactor system-cxx-std-lib rules0
I noticed a few things wrong with the hadrian rules for `system-cxx-std-lib` rules.
* For `text` there is an ad-hoc check to depend on `system-cxx-std-lib` outside of `configurePackage`.
* The `system-cxx-std-lib` dependency is not read from cabal files.
* Recache is not called on the packge database after the `.conf` file is generated, a more natural place for this rule is `registerRules`.
Treating this uniformly like other packages is complicated by it not having any source code or a cabal file. However we can do a bit better by reporting the dependency firstly in `PackageData` and then needing the `.conf` file in the same place as every other package in `configurePackage`.
Fixes #25303
- - - - -
3c49d226 by Sven Tennie at 2025-12-30T21:50:28+01:00
ci: Increase timeout for emulators
Test runs with emulators naturally take longer than on native machines.
Generate jobs.yml
- - - - -
73159aee by Sven Tennie at 2025-12-30T21:50:28+01:00
ghc: Distinguish between having an interpreter and having an internal one
Otherwise, we fail with warnings when compiling tools. Actually, these
are related but different things:
- ghc can run an interpreter (either internal or external)
- ghc is compiled with an internal interpreter
- - - - -
91c49f4c by Matthew Pickering at 2025-12-30T21:50:28+01:00
ci: Javascript don't set CROSS_EMULATOR
There is no CROSS_EMULATOR needed to run javascript binaries, so we
don't set the CROSS_EMULATOR to some dummy value.
- - - - -
bca3ef66 by Sven Tennie at 2025-12-30T21:50:28+01:00
Javascript skip T23697
See #22355 about how HSC2HS and the Javascript target don't play well
together.
- - - - -
76629776 by Matthew Pickering at 2025-12-30T21:50:28+01:00
ci: Javascript don't set CROSS_EMULATOR
There is no CROSS_EMULATOR needed to run javascript binaries, so we
don't set the CROSS_EMULATOR to some dummy value.
We want to keep the increased timeout settings, though.
Co-authored-by: Sven Tennie <sven.tennie(a)gmail.com>
- - - - -
68 changed files:
- .gitlab/ci.sh
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/jobs.yaml
- configure.ac
- distrib/configure.ac.in
- ghc/GHC/Driver/Session/Mode.hs
- ghc/GHCi/UI.hs
- ghc/Main.hs
- ghc/ghc-bin.cabal.in
- hadrian/README.md
- hadrian/bindist/config.mk.in
- + hadrian/cfg/system.config.host.in
- hadrian/cfg/system.config.in
- + hadrian/cfg/system.config.target.in
- hadrian/hadrian.cabal
- hadrian/src/Base.hs
- + hadrian/src/BindistConfig.hs
- hadrian/src/Builder.hs
- hadrian/src/Context.hs
- hadrian/src/Expression.hs
- hadrian/src/Flavour.hs
- hadrian/src/Flavour/Type.hs
- hadrian/src/Hadrian/Builder.hs
- hadrian/src/Hadrian/Haskell/Cabal/Parse.hs
- hadrian/src/Hadrian/Haskell/Cabal/Type.hs
- hadrian/src/Hadrian/Haskell/Hash.hs
- hadrian/src/Hadrian/Oracles/TextFile.hs
- hadrian/src/Oracles/Flag.hs
- hadrian/src/Oracles/Flavour.hs
- hadrian/src/Oracles/Setting.hs
- hadrian/src/Oracles/TestSettings.hs
- hadrian/src/Packages.hs
- hadrian/src/Rules.hs
- hadrian/src/Rules/BinaryDist.hs
- hadrian/src/Rules/CabalReinstall.hs
- hadrian/src/Rules/Compile.hs
- hadrian/src/Rules/Documentation.hs
- hadrian/src/Rules/Generate.hs
- hadrian/src/Rules/Gmp.hs
- hadrian/src/Rules/Libffi.hs
- hadrian/src/Rules/Library.hs
- hadrian/src/Rules/Program.hs
- hadrian/src/Rules/Register.hs
- hadrian/src/Rules/Rts.hs
- hadrian/src/Rules/Test.hs
- hadrian/src/Settings.hs
- hadrian/src/Settings/Builders/Cabal.hs
- hadrian/src/Settings/Builders/Common.hs
- hadrian/src/Settings/Builders/Configure.hs
- hadrian/src/Settings/Builders/DeriveConstants.hs
- hadrian/src/Settings/Builders/Ghc.hs
- hadrian/src/Settings/Builders/Hsc2Hs.hs
- hadrian/src/Settings/Builders/RunTest.hs
- hadrian/src/Settings/Builders/SplitSections.hs
- hadrian/src/Settings/Default.hs
- hadrian/src/Settings/Flavours/Benchmark.hs
- hadrian/src/Settings/Flavours/Development.hs
- hadrian/src/Settings/Flavours/GhcInGhci.hs
- hadrian/src/Settings/Flavours/Performance.hs
- hadrian/src/Settings/Flavours/Quick.hs
- hadrian/src/Settings/Flavours/QuickCross.hs
- hadrian/src/Settings/Flavours/Quickest.hs
- hadrian/src/Settings/Flavours/Validate.hs
- hadrian/src/Settings/Packages.hs
- hadrian/src/Settings/Program.hs
- hadrian/src/Settings/Warnings.hs
- libraries/base/tests/all.T
- testsuite/ghc-config/ghc-config.hs
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[Git][ghc/ghc][wip/terrorjack/asan] 10 commits: ghc-internal: remove unused GMP macros
by Cheng Shao (＠TerrorJack) 31 Dec '25
by Cheng Shao (＠TerrorJack) 31 Dec '25
31 Dec '25
Cheng Shao pushed to branch wip/terrorjack/asan at Glasgow Haskell Compiler / GHC
Commits:
0c8c82ed by Cheng Shao at 2025-12-30T18:02:14+01:00
ghc-internal: remove unused GMP macros
This patch removes unused GMP related macros from `ghc-internal`. The
in-tree GMP version was hard coded and outdated, but it was not used
anywhere anyway.
- - - - -
b7e851e0 by Cheng Shao at 2025-12-30T18:02:24+01:00
hadrian: fix in-tree gmp configure error on newer c compilers
Building in-tree gmp on newer c compilers that default to c23 fails at
configure stage, this patch fixes it, see added comment for
explanation.
- - - - -
7dc91125 by Cheng Shao at 2025-12-30T20:36:50+01:00
hadrian: remove linting/assertion in quick-validate flavour
The `quick-validate` flavour is meant for testing ghc and passing the
testsuite locally with similar settings to `validate` but faster. This
patch removes the linting/assertion overhead in `quick-validate` to
improve developer experience. I also took the chance to simplify
redundant logic of rts/library way definition in `validate` flavour.
- - - - -
30112ec2 by Cheng Shao at 2025-12-30T20:36:50+01:00
rts: add is-valid-utf8.c to .ubsan-suppressions
A minor one in `bytestring` that might surface when building with
+ubsan using clang.
- - - - -
efeedb4b by Cheng Shao at 2025-12-30T20:36:50+01:00
hadrian: add support for building with AddressSanitizer
This patch adds a +asan flavour transformer to hadrian to build all
stage1+ C/C++ code with AddressBehaviorSanitizer. This is particularly
useful to catch potential out-of-bounds and use-after-free bugs in the
RTS codebase.
- - - - -
35fa0b3e by Cheng Shao at 2025-12-30T20:36:50+01:00
ci: add ubsan+asan job
We now have a
`x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan`
validate/nightly job with both UBSan/ASan enabled. We build with
`quick-validate` instead of `validate` since the extra
assertion/linting is already provided by other jobs anyway and it's
better to reserve the CI time budget for UBSan/ASan overhead.
- - - - -
3a579848 by Cheng Shao at 2025-12-30T20:36:50+01:00
rts: add ASAN instrumentation to mblock allocator
- - - - -
b07f9481 by Cheng Shao at 2025-12-30T20:36:50+01:00
rts: add ASAN instrumentation to mgroup allocator
- - - - -
00a25615 by Cheng Shao at 2025-12-30T20:36:50+01:00
rts: add ASAN instrumentation to block allocator
- - - - -
c86441c1 by Cheng Shao at 2025-12-30T20:36:50+01:00
rts: add ASAN instrumentation to per-Task InCall free list
- - - - -
20 changed files:
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/jobs.yaml
- hadrian/doc/flavours.md
- hadrian/src/Flavour.hs
- hadrian/src/Rules/Gmp.hs
- hadrian/src/Settings/Flavours/Validate.hs
- libraries/ghc-internal/configure.ac
- libraries/ghc-internal/include/HsIntegerGmp.h.in
- rts/.ubsan-suppressions
- rts/Task.c
- rts/include/Stg.h
- + rts/include/rts/ASANUtils.h
- rts/rts.cabal
- rts/sm/BlockAlloc.c
- rts/sm/MBlock.c
- testsuite/driver/testglobals.py
- testsuite/driver/testlib.py
- testsuite/tests/ffi/should_run/all.T
- testsuite/tests/rts/T18623/all.T
- testsuite/tests/rts/all.T
Changes:
=====================================
.gitlab/generate-ci/gen_ci.hs
=====================================
@@ -162,6 +162,7 @@ data BuildConfig
, tablesNextToCode :: Bool
, threadSanitiser :: Bool
, ubsan :: Bool
+ , asan :: Bool
, noSplitSections :: Bool
, validateNonmovingGc :: Bool
, textWithSIMDUTF :: Bool
@@ -173,7 +174,7 @@ configureArgsStr :: BuildConfig -> String
configureArgsStr bc = unwords $
["--enable-unregisterised"| unregisterised bc ]
++ ["--disable-tables-next-to-code" | not (tablesNextToCode bc) ]
- ++ ["--with-intree-gmp" | Just _ <- pure (crossTarget bc) ]
+ ++ ["--with-intree-gmp" | isJust (crossTarget bc) || ubsan bc || asan bc ]
++ ["--with-system-libffi" | crossTarget bc == Just "wasm32-wasi" ]
++ ["--enable-ipe-data-compression" | withZstd bc ]
++ ["--enable-strict-ghc-toolchain-check"]
@@ -188,6 +189,7 @@ mkJobFlavour BuildConfig{..} = Flavour buildFlavour opts
[HostFullyStatic | hostFullyStatic] ++
[ThreadSanitiser | threadSanitiser] ++
[UBSan | ubsan] ++
+ [ASan | asan] ++
[NoSplitSections | noSplitSections, buildFlavour == Release ] ++
[BootNonmovingGc | validateNonmovingGc ] ++
[TextWithSIMDUTF | textWithSIMDUTF]
@@ -201,11 +203,12 @@ data FlavourTrans =
| HostFullyStatic
| ThreadSanitiser
| UBSan
+ | ASan
| NoSplitSections
| BootNonmovingGc
| TextWithSIMDUTF
-data BaseFlavour = Release | Validate | SlowValidate deriving Eq
+data BaseFlavour = Release | QuickValidate | Validate | SlowValidate deriving Eq
-----------------------------------------------------------------------------
-- Build Configurations
@@ -230,6 +233,7 @@ vanilla = BuildConfig
, tablesNextToCode = True
, threadSanitiser = False
, ubsan = False
+ , asan = False
, noSplitSections = False
, validateNonmovingGc = False
, textWithSIMDUTF = False
@@ -283,8 +287,14 @@ llvm = vanilla { llvmBootstrap = True }
tsan :: BuildConfig
tsan = vanilla { threadSanitiser = True }
-enableUBSan :: BuildConfig
-enableUBSan = vanilla { withDwarf = True, ubsan = True }
+enableUBSanASan :: BuildConfig
+enableUBSanASan =
+ vanilla
+ { buildFlavour = QuickValidate,
+ withDwarf = True,
+ ubsan = True,
+ asan = True
+ }
noTntc :: BuildConfig
noTntc = vanilla { tablesNextToCode = False }
@@ -372,6 +382,7 @@ flavourString :: Flavour -> String
flavourString (Flavour base trans) = base_string base ++ concatMap (("+" ++) . flavour_string) trans
where
base_string Release = "release"
+ base_string QuickValidate = "quick-validate"
base_string Validate = "validate"
base_string SlowValidate = "slow-validate"
@@ -381,6 +392,7 @@ flavourString (Flavour base trans) = base_string base ++ concatMap (("+" ++) . f
flavour_string HostFullyStatic = "host_fully_static"
flavour_string ThreadSanitiser = "thread_sanitizer_cmm"
flavour_string UBSan = "ubsan"
+ flavour_string ASan = "asan"
flavour_string NoSplitSections = "no_split_sections"
flavour_string BootNonmovingGc = "boot_nonmoving_gc"
flavour_string TextWithSIMDUTF = "text_simdutf"
@@ -1213,15 +1225,24 @@ fedora_x86 =
, hackage_doc_job (disableValidate (standardBuildsWithConfig Amd64 (Linux Fedora43) releaseConfig))
, disableValidate (standardBuildsWithConfig Amd64 (Linux Fedora43) dwarf)
, disableValidate (standardBuilds Amd64 (Linux Fedora43))
- -- For UBSan jobs, only enable for validate/nightly pipelines.
- -- Also disable docs since it's not the point for UBSan jobs.
+ -- For UBSan/ASan jobs, only enable for validate/nightly
+ -- pipelines. Also disable docs since it's not the point for
+ -- UBSan/ASan jobs.
+ --
+ -- See
+ -- https://github.com/llvm/llvm-project/blob/llvmorg-21.1.8/compiler-rt/lib/sa…
+ -- for ASAN options help, for now these are required to pass the
+ -- testsuite
, modifyJobs
( setVariable "HADRIAN_ARGS" "--docs=none"
. addVariable
"UBSAN_OPTIONS"
"suppressions=$CI_PROJECT_DIR/rts/.ubsan-suppressions"
+ . addVariable
+ "ASAN_OPTIONS"
+ "detect_leaks=false:handle_segv=0:handle_sigfpe=0:verify_asan_link_order=false"
)
- $ validateBuilds Amd64 (Linux Fedora43) enableUBSan
+ $ validateBuilds Amd64 (Linux Fedora43) enableUBSanASan
]
where
hackage_doc_job = rename (<> "-hackage") . modifyJobs (addVariable "HADRIAN_ARGS" "--haddock-for-hackage")
=====================================
.gitlab/jobs.yaml
=====================================
@@ -2942,7 +2942,7 @@
"XZ_OPT": "-9"
}
},
- "nightly-x86_64-linux-fedora43-release": {
+ "nightly-x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -2953,7 +2953,7 @@
"artifacts": {
"expire_in": "8 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-release.tar.xz",
+ "ghc-x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -2995,17 +2995,20 @@
"x86_64-linux"
],
"variables": {
+ "ASAN_OPTIONS": "detect_leaks=false:handle_segv=0:handle_sigfpe=0:verify_asan_link_order=false",
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-release",
- "BUILD_FLAVOUR": "release",
- "CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan",
+ "BUILD_FLAVOUR": "quick-validate+debug_info+ubsan+asan",
+ "CONFIGURE_ARGS": "--with-intree-gmp --enable-strict-ghc-toolchain-check",
+ "HADRIAN_ARGS": "--docs=none",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-release",
+ "TEST_ENV": "x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan",
+ "UBSAN_OPTIONS": "suppressions=$CI_PROJECT_DIR/rts/.ubsan-suppressions",
"XZ_OPT": "-9"
}
},
- "nightly-x86_64-linux-fedora43-release-hackage": {
+ "nightly-x86_64-linux-fedora43-release": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -3062,14 +3065,13 @@
"BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-release",
"BUILD_FLAVOUR": "release",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
- "HADRIAN_ARGS": "--haddock-for-hackage",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
"TEST_ENV": "x86_64-linux-fedora43-release",
"XZ_OPT": "-9"
}
},
- "nightly-x86_64-linux-fedora43-validate": {
+ "nightly-x86_64-linux-fedora43-release-hackage": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -3080,7 +3082,7 @@
"artifacts": {
"expire_in": "8 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-validate.tar.xz",
+ "ghc-x86_64-linux-fedora43-release.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -3123,16 +3125,17 @@
],
"variables": {
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate",
- "BUILD_FLAVOUR": "validate",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-release",
+ "BUILD_FLAVOUR": "release",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
+ "HADRIAN_ARGS": "--haddock-for-hackage",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-validate",
+ "TEST_ENV": "x86_64-linux-fedora43-release",
"XZ_OPT": "-9"
}
},
- "nightly-x86_64-linux-fedora43-validate+debug_info": {
+ "nightly-x86_64-linux-fedora43-validate": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -3143,7 +3146,7 @@
"artifacts": {
"expire_in": "8 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-validate+debug_info.tar.xz",
+ "ghc-x86_64-linux-fedora43-validate.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -3186,16 +3189,16 @@
],
"variables": {
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate+debug_info",
- "BUILD_FLAVOUR": "validate+debug_info",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate",
+ "BUILD_FLAVOUR": "validate",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-validate+debug_info",
+ "TEST_ENV": "x86_64-linux-fedora43-validate",
"XZ_OPT": "-9"
}
},
- "nightly-x86_64-linux-fedora43-validate+debug_info+ubsan": {
+ "nightly-x86_64-linux-fedora43-validate+debug_info": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -3206,7 +3209,7 @@
"artifacts": {
"expire_in": "8 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-validate+debug_info+ubsan.tar.xz",
+ "ghc-x86_64-linux-fedora43-validate+debug_info.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -3249,14 +3252,12 @@
],
"variables": {
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate+debug_info+ubsan",
- "BUILD_FLAVOUR": "validate+debug_info+ubsan",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate+debug_info",
+ "BUILD_FLAVOUR": "validate+debug_info",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
- "HADRIAN_ARGS": "--docs=none",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-validate+debug_info+ubsan",
- "UBSAN_OPTIONS": "suppressions=$CI_PROJECT_DIR/rts/.ubsan-suppressions",
+ "TEST_ENV": "x86_64-linux-fedora43-validate+debug_info",
"XZ_OPT": "-9"
}
},
@@ -7097,7 +7098,7 @@
"TEST_ENV": "x86_64-linux-deb9-validate"
}
},
- "x86_64-linux-fedora43-release": {
+ "x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -7108,7 +7109,7 @@
"artifacts": {
"expire_in": "2 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-release.tar.xz",
+ "ghc-x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -7134,7 +7135,7 @@
],
"rules": [
{
- "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-release(\\s|$).*/)) || (($ONLY_JOBS == null) && ((\"true\" == \"true\")))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
+ "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-quick-validate\\+debug_info\\+ubsan\\+asan(\\s|$).*/)) || (($ONLY_JOBS == null) && ((($CI_MERGE_REQUEST_LABELS =~ /.*full-ci.*/) || ($CI_MERGE_REQUEST_LABELS =~ /.*marge_bot_batch_merge_job.*/) || ($CI_COMMIT_BRANCH == \"master\") || ($CI_COMMIT_BRANCH =~ /ghc-[0-9]+\\.[0-9]+/))))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
"when": "on_success"
}
],
@@ -7150,16 +7151,19 @@
"x86_64-linux"
],
"variables": {
+ "ASAN_OPTIONS": "detect_leaks=false:handle_segv=0:handle_sigfpe=0:verify_asan_link_order=false",
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-release",
- "BUILD_FLAVOUR": "release",
- "CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan",
+ "BUILD_FLAVOUR": "quick-validate+debug_info+ubsan+asan",
+ "CONFIGURE_ARGS": "--with-intree-gmp --enable-strict-ghc-toolchain-check",
+ "HADRIAN_ARGS": "--docs=none",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-release"
+ "TEST_ENV": "x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan",
+ "UBSAN_OPTIONS": "suppressions=$CI_PROJECT_DIR/rts/.ubsan-suppressions"
}
},
- "x86_64-linux-fedora43-release-hackage": {
+ "x86_64-linux-fedora43-release": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -7196,7 +7200,7 @@
],
"rules": [
{
- "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-release(\\s|$).*/)) || (($ONLY_JOBS == null) && (\"disabled\" != \"disabled\"))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
+ "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-release(\\s|$).*/)) || (($ONLY_JOBS == null) && ((\"true\" == \"true\")))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
"when": "on_success"
}
],
@@ -7216,13 +7220,12 @@
"BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-release",
"BUILD_FLAVOUR": "release",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
- "HADRIAN_ARGS": "--haddock-for-hackage",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
"TEST_ENV": "x86_64-linux-fedora43-release"
}
},
- "x86_64-linux-fedora43-validate": {
+ "x86_64-linux-fedora43-release-hackage": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -7233,7 +7236,7 @@
"artifacts": {
"expire_in": "2 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-validate.tar.xz",
+ "ghc-x86_64-linux-fedora43-release.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -7259,7 +7262,7 @@
],
"rules": [
{
- "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-validate(\\s|$).*/)) || (($ONLY_JOBS == null) && (\"disabled\" != \"disabled\"))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
+ "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-release(\\s|$).*/)) || (($ONLY_JOBS == null) && (\"disabled\" != \"disabled\"))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
"when": "on_success"
}
],
@@ -7276,15 +7279,16 @@
],
"variables": {
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate",
- "BUILD_FLAVOUR": "validate",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-release",
+ "BUILD_FLAVOUR": "release",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
+ "HADRIAN_ARGS": "--haddock-for-hackage",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-validate"
+ "TEST_ENV": "x86_64-linux-fedora43-release"
}
},
- "x86_64-linux-fedora43-validate+debug_info": {
+ "x86_64-linux-fedora43-validate": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -7295,7 +7299,7 @@
"artifacts": {
"expire_in": "2 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-validate+debug_info.tar.xz",
+ "ghc-x86_64-linux-fedora43-validate.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -7321,7 +7325,7 @@
],
"rules": [
{
- "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-validate\\+debug_info(\\s|$).*/)) || (($ONLY_JOBS == null) && (\"disabled\" != \"disabled\"))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
+ "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-validate(\\s|$).*/)) || (($ONLY_JOBS == null) && (\"disabled\" != \"disabled\"))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
"when": "on_success"
}
],
@@ -7338,15 +7342,15 @@
],
"variables": {
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate+debug_info",
- "BUILD_FLAVOUR": "validate+debug_info",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate",
+ "BUILD_FLAVOUR": "validate",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-validate+debug_info"
+ "TEST_ENV": "x86_64-linux-fedora43-validate"
}
},
- "x86_64-linux-fedora43-validate+debug_info+ubsan": {
+ "x86_64-linux-fedora43-validate+debug_info": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -7357,7 +7361,7 @@
"artifacts": {
"expire_in": "2 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-validate+debug_info+ubsan.tar.xz",
+ "ghc-x86_64-linux-fedora43-validate+debug_info.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -7383,7 +7387,7 @@
],
"rules": [
{
- "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-validate\\+debug_info\\+ubsan(\\s|$).*/)) || (($ONLY_JOBS == null) && ((($CI_MERGE_REQUEST_LABELS =~ /.*full-ci.*/) || ($CI_MERGE_REQUEST_LABELS =~ /.*marge_bot_batch_merge_job.*/) || ($CI_COMMIT_BRANCH == \"master\") || ($CI_COMMIT_BRANCH =~ /ghc-[0-9]+\\.[0-9]+/))))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
+ "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-validate\\+debug_info(\\s|$).*/)) || (($ONLY_JOBS == null) && (\"disabled\" != \"disabled\"))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
"when": "on_success"
}
],
@@ -7400,14 +7404,12 @@
],
"variables": {
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate+debug_info+ubsan",
- "BUILD_FLAVOUR": "validate+debug_info+ubsan",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate+debug_info",
+ "BUILD_FLAVOUR": "validate+debug_info",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
- "HADRIAN_ARGS": "--docs=none",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-validate+debug_info+ubsan",
- "UBSAN_OPTIONS": "suppressions=$CI_PROJECT_DIR/rts/.ubsan-suppressions"
+ "TEST_ENV": "x86_64-linux-fedora43-validate+debug_info"
}
},
"x86_64-linux-rocky8-validate": {
=====================================
hadrian/doc/flavours.md
=====================================
@@ -242,6 +242,10 @@ The supported transformers are listed below:
<td><code>ubsan</code></td>
<td>Build all stage1+ C/C++ code with UndefinedBehaviorSanitizer support</td>
</tr>
+ <tr>
+ <td><code>asan</code></td>
+ <td>Build all stage1+ C/C++ code with AddressSanitizer support</td>
+ </tr>
<tr>
<td><code>llvm</code></td>
<td>Use GHC's LLVM backend (`-fllvm`) for all stage1+ compilation.</td>
=====================================
hadrian/src/Flavour.hs
=====================================
@@ -8,6 +8,7 @@ module Flavour
, splitSections
, enableThreadSanitizer
, enableUBSan
+ , enableASan
, enableLateCCS
, enableHashUnitIds
, enableDebugInfo, enableTickyGhc
@@ -57,6 +58,7 @@ flavourTransformers = M.fromList
, "thread_sanitizer" =: enableThreadSanitizer False
, "thread_sanitizer_cmm" =: enableThreadSanitizer True
, "ubsan" =: enableUBSan
+ , "asan" =: enableASan
, "llvm" =: viaLlvmBackend
, "profiled_ghc" =: enableProfiledGhc
, "no_dynamic_ghc" =: disableDynamicGhcPrograms
@@ -306,6 +308,42 @@ enableUBSan =
builder Testsuite ? arg "--config=have_ubsan=True"
]
+-- | Build all stage1+ C/C++ code with AddressSanitizer support:
+-- https://clang.llvm.org/docs/AddressSanitizer.html
+enableASan :: Flavour -> Flavour
+enableASan =
+ addArgs $
+ notStage0
+ ? mconcat
+ [ package rts
+ ? builder (Cabal Flags)
+ ? arg "+asan"
+ <> (needSharedLibSAN ? arg "+shared-libsan"),
+ builder (Ghc CompileHs)
+ ? arg "-optc-Og"
+ <> arg "-optc-fno-omit-frame-pointer"
+ <> arg "-optc-fsanitize=address",
+ builder (Ghc CompileCWithGhc)
+ ? ((not <$> input "**/Hash.c") ? arg "-optc-Og")
+ <> arg "-optc-fno-omit-frame-pointer"
+ <> arg "-optc-fsanitize=address",
+ builder (Ghc CompileCppWithGhc)
+ ? arg "-optcxx-Og"
+ <> arg "-optcxx-fno-omit-frame-pointer"
+ <> arg "-optcxx-fsanitize=address",
+ builder (Ghc LinkHs)
+ ? arg "-optc-Og"
+ <> arg "-optc-fno-omit-frame-pointer"
+ <> arg "-optc-fsanitize=address"
+ <> arg "-optl-fsanitize=address"
+ <> (needSharedLibSAN ? arg "-optl-shared-libsan"),
+ builder (Cc CompileC)
+ ? arg "-Og"
+ <> arg "-fno-omit-frame-pointer"
+ <> arg "-fsanitize=address",
+ builder Testsuite ? arg "--config=have_asan=True"
+ ]
+
-- | Use the LLVM backend in stages 1 and later.
viaLlvmBackend :: Flavour -> Flavour
viaLlvmBackend = addArgs $ notStage0 ? builder Ghc ? arg "-fllvm"
=====================================
hadrian/src/Rules/Gmp.hs
=====================================
@@ -126,6 +126,12 @@ gmpRules = do
interpretInContext ctx $
mconcat
[ getStagedCCFlags
+ -- gmp fails to configure with newer compilers
+ -- that default to c23:
+ -- https://gmplib.org/list-archives/gmp-devel/2025-January/006279.html.
+ -- for now just manually specify -std=gnu11 until
+ -- next upstream release.
+ , arg "-std=gnu11"
-- gmp symbols are only used by bignum logic in
-- ghc-internal and shouldn't be exported by the
-- ghc-internal shared library.
=====================================
hadrian/src/Settings/Flavours/Validate.hs
=====================================
@@ -1,31 +1,16 @@
module Settings.Flavours.Validate (validateFlavour, slowValidateFlavour,
quickValidateFlavour) where
-import qualified Data.Set as Set
import Expression
import Flavour
-import Oracles.Flag
import {-# SOURCE #-} Settings.Default
-- Please update doc/flavours.md when changing this file.
validateFlavour :: Flavour
-validateFlavour = enableLinting $ werror $ defaultFlavour
+validateFlavour = enableLinting $ quickValidateFlavour
{ name = "validate"
, extraArgs = validateArgs <> defaultHaddockExtraArgs
- , libraryWays = Set.fromList <$>
- mconcat [ pure [vanilla]
- , notStage0 ? platformSupportsSharedLibs ? pure [dynamic]
- ]
- , rtsWays = Set.fromList <$>
- mconcat [ pure [vanilla, debug]
- , targetSupportsThreadedRts ? pure [threaded, threadedDebug]
- , notStage0 ? platformSupportsSharedLibs ? pure
- [ dynamic, debugDynamic
- ]
- , notStage0 ? platformSupportsSharedLibs ? targetSupportsThreadedRts ? pure
- [ threadedDynamic, threadedDebugDynamic ]
- ]
, ghcDebugAssertions = (<= Stage1)
}
@@ -59,6 +44,6 @@ quickValidateArgs = sourceArgs SourceArgs
}
quickValidateFlavour :: Flavour
-quickValidateFlavour = werror $ validateFlavour
+quickValidateFlavour = werror $ disableProfiledLibs $ defaultFlavour
{ name = "quick-validate"
, extraArgs = quickValidateArgs }
=====================================
libraries/ghc-internal/configure.ac
=====================================
@@ -195,28 +195,10 @@ dnl--------------------------------------------------------------------
if test "$HaveFrameworkGMP" = "YES" || test "$HaveLibGmp" = "YES"
then
AC_MSG_RESULT([no])
- UseIntreeGmp=0
AC_CHECK_HEADER([gmp.h], , [AC_MSG_ERROR([Cannot find gmp.h])])
-
- AC_MSG_CHECKING([GMP version])
- AC_COMPUTE_INT(GhcGmpVerMj, __GNU_MP_VERSION, [#include <gmp.h>],
- AC_MSG_ERROR([Unable to get value of __GNU_MP_VERSION]))
- AC_COMPUTE_INT(GhcGmpVerMi, __GNU_MP_VERSION_MINOR, [#include <gmp.h>],
- AC_MSG_ERROR([Unable to get value of __GNU_MP_VERSION_MINOR]))
- AC_COMPUTE_INT(GhcGmpVerPl, __GNU_MP_VERSION_PATCHLEVEL, [#include <gmp.h>],
- AC_MSG_ERROR([Unable to get value of __GNU_MP_VERSION_PATCHLEVEL]))
- AC_MSG_RESULT([$GhcGmpVerMj.$GhcGmpVerMi.$GhcGmpVerPl])
-
else
AC_MSG_RESULT([yes])
- UseIntreeGmp=1
HaveSecurePowm=1
-
- AC_MSG_CHECKING([GMP version])
- GhcGmpVerMj=6
- GhcGmpVerMi=1
- GhcGmpVerPl=2
- AC_MSG_RESULT([$GhcGmpVerMj.$GhcGmpVerMi.$GhcGmpVerPl])
fi
GMP_INSTALL_INCLUDES="HsIntegerGmp.h ghc-gmp.h"
@@ -231,10 +213,6 @@ AC_SUBST(GMP_INSTALL_INCLUDES)
AC_SUBST(HaveLibGmp)
AC_SUBST(HaveFrameworkGMP)
AC_SUBST(HaveSecurePowm)
-AC_SUBST(UseIntreeGmp)
-AC_SUBST(GhcGmpVerMj)
-AC_SUBST(GhcGmpVerMi)
-AC_SUBST(GhcGmpVerPl)
# Compute offsets/sizes used by jsbits/base.js
if test "$host" = "javascript-ghcjs"
=====================================
libraries/ghc-internal/include/HsIntegerGmp.h.in
=====================================
@@ -1,14 +1,4 @@
#pragma once
-/* Whether GMP is embedded into ghc-internal */
-#define GHC_GMP_INTREE @UseIntreeGmp@
-
-/* The following values denote the GMP version used during GHC build-time */
-#define GHC_GMP_VERSION_MJ @GhcGmpVerMj@
-#define GHC_GMP_VERSION_MI @GhcGmpVerMi@
-#define GHC_GMP_VERSION_PL @GhcGmpVerPl@
-#define GHC_GMP_VERSION \
- (@GhcGmpVerMj@ * 10000 + @GhcGmpVerMi@ * 100 + @GhcGmpVerPl@)
-
/* Whether GMP supports mpz_powm_sec */
#define HAVE_SECURE_POWM @HaveSecurePowm@
=====================================
rts/.ubsan-suppressions
=====================================
@@ -1,3 +1,6 @@
+# libraries/bytestring/cbits/is-valid-utf8.c:66:14: runtime load of misaligned address 0x7ae45206f112 for type 'const uint64_t *' (aka 'const unsigned long *'), which requires 8 byte alignment
+alignment:libraries/bytestring/cbits/is-valid-utf8.c
+
# libraries/text/cbits/measure_off.c:50:39: runtime left shift of 1 by 31 places cannot be represented in type 'int'
shift-base:libraries/text/cbits/measure_off.c
=====================================
rts/Task.c
=====================================
@@ -183,6 +183,7 @@ freeTask (Task *task)
stgFree(incall);
}
for (incall = task->spare_incalls; incall != NULL; incall = next) {
+ __ghc_asan_unpoison_memory_region(incall, sizeof(InCall));
next = incall->next;
stgFree(incall);
}
@@ -252,6 +253,7 @@ newInCall (Task *task)
if (task->spare_incalls != NULL) {
incall = task->spare_incalls;
+ __ghc_asan_unpoison_memory_region(incall, sizeof(InCall));
task->spare_incalls = incall->next;
task->n_spare_incalls--;
} else {
@@ -283,6 +285,7 @@ endInCall (Task *task)
stgFree(incall);
} else {
incall->next = task->spare_incalls;
+ __ghc_asan_poison_memory_region(incall, sizeof(InCall));
task->spare_incalls = incall;
task->n_spare_incalls++;
}
=====================================
rts/include/Stg.h
=====================================
@@ -335,6 +335,7 @@ external prototype return neither of these types to workaround #11395.
#include "stg/MachRegsForHost.h"
#include "stg/Regs.h"
#include "stg/Ticky.h"
+#include "rts/ASANUtils.h"
#include "rts/TSANUtils.h"
#if IN_STG_CODE
=====================================
rts/include/rts/ASANUtils.h
=====================================
@@ -0,0 +1,33 @@
+#pragma once
+
+#if defined(__SANITIZE_ADDRESS__)
+#define ASAN_ENABLED
+#elif defined(__has_feature)
+#if __has_feature(address_sanitizer)
+#define ASAN_ENABLED
+#endif
+#endif
+
+#if defined(ASAN_ENABLED)
+#include <sanitizer/asan_interface.h>
+#define USED_IF_ASAN
+#else
+#include <stdlib.h>
+#define USED_IF_ASAN __attribute__((unused))
+#endif
+
+static inline void
+__ghc_asan_poison_memory_region(void const volatile *addr USED_IF_ASAN,
+ size_t size USED_IF_ASAN) {
+#if defined(ASAN_ENABLED)
+ __asan_poison_memory_region(addr, size);
+#endif
+}
+
+static inline void
+__ghc_asan_unpoison_memory_region(void const volatile *addr USED_IF_ASAN,
+ size_t size USED_IF_ASAN) {
+#if defined(ASAN_ENABLED)
+ __asan_unpoison_memory_region(addr, size);
+#endif
+}
=====================================
rts/rts.cabal
=====================================
@@ -97,6 +97,12 @@ flag ubsan
UndefinedBehaviorSanitizer.
default: False
manual: True
+flag asan
+ description:
+ Link with -fsanitize=address, to be enabled when building with
+ AddressSanitizer.
+ default: False
+ manual: True
flag shared-libsan
description:
Link with -shared-libsan, to guarantee only one copy of the
@@ -216,6 +222,9 @@ library
if flag(ubsan)
ld-options: -fsanitize=undefined
+ if flag(asan)
+ ld-options: -fsanitize=address
+
if flag(shared-libsan)
ld-options: -shared-libsan
@@ -280,6 +289,7 @@ library
-- ^ generated
rts/ghc_ffi.h
rts/Adjustor.h
+ rts/ASANUtils.h
rts/ExecPage.h
rts/BlockSignals.h
rts/Bytecodes.h
=====================================
rts/sm/BlockAlloc.c
=====================================
@@ -261,6 +261,8 @@ initGroup(bdescr *head)
head[i].flags = 0;
}
#endif
+
+ __ghc_asan_unpoison_memory_region(head->start, (W_)head->blocks * BLOCK_SIZE);
}
#if SIZEOF_VOID_P == SIZEOF_LONG
@@ -474,6 +476,7 @@ alloc_mega_group (uint32_t node, StgWord mblocks)
bd = alloc_mega_group_from_free_list(&deferred_free_mblock_list[node], n, &best);
if(bd)
{
+ __ghc_asan_unpoison_memory_region(bd->start, (W_)bd->blocks * BLOCK_SIZE);
return bd;
}
else if(!best)
@@ -490,6 +493,7 @@ alloc_mega_group (uint32_t node, StgWord mblocks)
if (bd)
{
+ __ghc_asan_unpoison_memory_region(bd->start, (W_)bd->blocks * BLOCK_SIZE);
return bd;
}
else if (best)
@@ -500,6 +504,7 @@ alloc_mega_group (uint32_t node, StgWord mblocks)
(best_mblocks-mblocks)*MBLOCK_SIZE);
best->blocks = MBLOCK_GROUP_BLOCKS(best_mblocks - mblocks);
+ __ghc_asan_unpoison_memory_region(MBLOCK_ROUND_DOWN(bd), mblocks * MBLOCK_SIZE);
initMBlock(MBLOCK_ROUND_DOWN(bd), node);
}
else
@@ -878,6 +883,8 @@ free_mega_group (bdescr *mg)
IF_DEBUG(sanity, checkFreeListSanity());
}
+
+ __ghc_asan_poison_memory_region(mg->start, (W_)mg->blocks * BLOCK_SIZE);
}
static void
@@ -925,6 +932,8 @@ free_deferred_mega_groups (uint32_t node)
// coalesce forwards
coalesce_mblocks(mg);
+ __ghc_asan_poison_memory_region(mg->start, (W_)mg->blocks * BLOCK_SIZE);
+
// initialize search for next round
prev = mg;
bd = prev->link;
@@ -1045,6 +1054,8 @@ freeGroup(bdescr *p)
setup_tail(p);
free_list_insert(node,p);
+ __ghc_asan_poison_memory_region(p->start, (W_)p->blocks * BLOCK_SIZE);
+
IF_DEBUG(sanity, checkFreeListSanity());
}
=====================================
rts/sm/MBlock.c
=====================================
@@ -579,6 +579,8 @@ getMBlocks(uint32_t n)
ret = getCommittedMBlocks(n);
+ __ghc_asan_unpoison_memory_region(ret, (W_)n * MBLOCK_SIZE);
+
debugTrace(DEBUG_gc, "allocated %d megablock(s) at %p",n,ret);
mblocks_allocated += n;
@@ -611,6 +613,8 @@ freeMBlocks(void *addr, uint32_t n)
mblocks_allocated -= n;
+ __ghc_asan_poison_memory_region(addr, (W_)n * MBLOCK_SIZE);
+
decommitMBlocks(addr, n);
}
=====================================
testsuite/driver/testglobals.py
=====================================
@@ -189,6 +189,9 @@ class TestConfig:
# Are we running with UndefinedBehaviorSanitizer enabled?
self.have_ubsan = False
+ # Are we running with AddressSanitizer enabled?
+ self.have_asan = False
+
# Do symbols use leading underscores?
self.leading_underscore = False
=====================================
testsuite/driver/testlib.py
=====================================
@@ -1093,6 +1093,9 @@ def have_thread_sanitizer( ) -> bool:
def have_ubsan( ) -> bool:
return config.have_ubsan
+def have_asan( ) -> bool:
+ return config.have_asan
+
def gcc_as_cmmp() -> bool:
return config.cmm_cpp_is_gcc
=====================================
testsuite/tests/ffi/should_run/all.T
=====================================
@@ -192,6 +192,9 @@ test('rts_clearMemory', [
extra_ways(['g1', 'nursery_chunks', 'nonmoving', 'compacting_gc', 'sanity']),
# On windows, nonmoving way fails with bad exit code (2816)
when(opsys('mingw32'), fragile(23091)),
+ # For simplicity, ASAN poisoning/unpoisoning logic is omitted
+ # from rts_clearMemory implementation
+ when(have_asan(), skip),
req_c,
pre_cmd('$MAKE -s --no-print-directory rts_clearMemory_setup') ],
# Same hack as ffi023
=====================================
testsuite/tests/rts/T18623/all.T
=====================================
@@ -8,6 +8,8 @@ test('T18623',
# Recent versions of osx report an error when running `ulimit -v`
when(opsys('darwin'), skip),
when(arch('powerpc64le'), skip),
+ # ASan can't allocate shadow memory
+ when(have_asan(), skip),
cmd_prefix('ulimit -v ' + str(8 * 1024 ** 2) + ' && '),
ignore_stdout],
run_command,
=====================================
testsuite/tests/rts/all.T
=====================================
@@ -105,6 +105,8 @@ def remove_parenthesis(s):
return re.sub(r'\s+\([^)]*\)', '', s)
test('outofmem', [ when(opsys('darwin'), skip),
+ # ASan shadow memory allocation blows up
+ when(have_asan(), skip),
# this is believed to cause other processes to die
# that happen concurrently while the outofmem test
# runs in CI. As such we'll need to disable it on
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/b6529c809eb24851224e06c535e653…
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/b6529c809eb24851224e06c535e653…
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31 Dec '25
Cheng Shao pushed new branch wip/fix-i386-llvm at Glasgow Haskell Compiler / GHC
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/fix-i386-llvm
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Simon Peyton Jones pushed to branch wip/T26709 at Glasgow Haskell Compiler / GHC
Commits:
4b2f2236 by Simon Peyton Jones at 2025-12-30T19:16:12+00:00
Wibble
- - - - -
1 changed file:
- testsuite/tests/simplCore/should_compile/all.T
Changes:
=====================================
testsuite/tests/simplCore/should_compile/all.T
=====================================
@@ -567,4 +567,4 @@ test('T26349', normal, compile, ['-O -ddump-rules'])
# T26709: we expect three `case` expressions not four
test('T26709', [grep_errmsg(r'case')],
multimod_compile,
- ['-O -ddump-simpl -dsuppress-uniques -dno-typeable-binds'])
+ ['T26709', '-O -ddump-simpl -dsuppress-uniques -dno-typeable-binds'])
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/4b2f2236af8214ccdefdd643d1f2fae…
--
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Simon Peyton Jones pushed to branch wip/T26709 at Glasgow Haskell Compiler / GHC
Commits:
d772880e by Simon Peyton Jones at 2025-12-30T17:43:05+00:00
Wibble
- - - - -
1 changed file:
- testsuite/tests/simplCore/should_compile/all.T
Changes:
=====================================
testsuite/tests/simplCore/should_compile/all.T
=====================================
@@ -565,4 +565,6 @@ test('T26117', [grep_errmsg(r'==')], compile, ['-O -ddump-simpl -dsuppress-uniqu
test('T26349', normal, compile, ['-O -ddump-rules'])
# T26709: we expect three `case` expressions not four
-test('T26709', [grep_errmsg(r'case', ['-O -ddump-simpl -dsuppress-uniques -dno-typeable-binds'])
+test('T26709', [grep_errmsg(r'case')],
+ multimod_compile,
+ ['-O -ddump-simpl -dsuppress-uniques -dno-typeable-binds'])
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/d772880e62b5cd6619623f899ffe281…
--
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Simon Peyton Jones pushed new branch wip/T26709 at Glasgow Haskell Compiler / GHC
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30 Dec '25
Cheng Shao pushed new branch wip/fix-intree-gmp-c23 at Glasgow Haskell Compiler / GHC
--
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[Git][ghc/ghc][wip/terrorjack/asan] 8 commits: ghc-internal: remove unused GMP macros
by Cheng Shao (＠TerrorJack) 30 Dec '25
by Cheng Shao (＠TerrorJack) 30 Dec '25
30 Dec '25
Cheng Shao pushed to branch wip/terrorjack/asan at Glasgow Haskell Compiler / GHC
Commits:
a1fd717c by Cheng Shao at 2025-12-30T17:58:26+01:00
ghc-internal: remove unused GMP macros
This patch removes unused GMP related macros from `ghc-internal`. The
in-tree GMP version was hard coded and outdated, but it was not used
anywhere anyway.
- - - - -
5c4dff97 by Cheng Shao at 2025-12-30T17:58:26+01:00
hadrian: fix in-tree gmp configure error on newer c compilers
Building in-tree gmp on newer c compilers that default to c23 fails at
configure stage, this patch fixes it, see added comment for
explanation.
- - - - -
0e142212 by Cheng Shao at 2025-12-30T17:58:26+01:00
hadrian: add support for building with AddressSanitizer
This patch adds a +asan flavour transformer to hadrian to build all
stage1+ C/C++ code with AddressBehaviorSanitizer. This is particularly
useful to catch potential out-of-bounds and use-after-free bugs in the
RTS codebase.
- - - - -
ca924bc8 by Cheng Shao at 2025-12-30T17:58:26+01:00
ci: add ubsan+asan job
We now have a
`x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan`
validate/nightly job with both UBSan/ASan enabled. We build with
`quick-validate` instead of `validate` since the extra
assertion/linting is already provided by other jobs anyway and it's
better to reserve the CI time budget for UBSan/ASan overhead.
- - - - -
7cbae2b6 by Cheng Shao at 2025-12-30T17:58:26+01:00
rts: add ASAN instrumentation to mblock allocator
- - - - -
1099dcbe by Cheng Shao at 2025-12-30T17:58:27+01:00
rts: add ASAN instrumentation to mgroup allocator
- - - - -
c6c29334 by Cheng Shao at 2025-12-30T17:58:27+01:00
rts: add ASAN instrumentation to block allocator
- - - - -
b6529c80 by Cheng Shao at 2025-12-30T17:58:27+01:00
rts: add ASAN instrumentation to per-Task InCall free list
- - - - -
18 changed files:
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/jobs.yaml
- hadrian/doc/flavours.md
- hadrian/src/Flavour.hs
- hadrian/src/Rules/Gmp.hs
- libraries/ghc-internal/configure.ac
- libraries/ghc-internal/include/HsIntegerGmp.h.in
- rts/Task.c
- rts/include/Stg.h
- + rts/include/rts/ASANUtils.h
- rts/rts.cabal
- rts/sm/BlockAlloc.c
- rts/sm/MBlock.c
- testsuite/driver/testglobals.py
- testsuite/driver/testlib.py
- testsuite/tests/ffi/should_run/all.T
- testsuite/tests/rts/T18623/all.T
- testsuite/tests/rts/all.T
Changes:
=====================================
.gitlab/generate-ci/gen_ci.hs
=====================================
@@ -162,6 +162,7 @@ data BuildConfig
, tablesNextToCode :: Bool
, threadSanitiser :: Bool
, ubsan :: Bool
+ , asan :: Bool
, noSplitSections :: Bool
, validateNonmovingGc :: Bool
, textWithSIMDUTF :: Bool
@@ -173,7 +174,7 @@ configureArgsStr :: BuildConfig -> String
configureArgsStr bc = unwords $
["--enable-unregisterised"| unregisterised bc ]
++ ["--disable-tables-next-to-code" | not (tablesNextToCode bc) ]
- ++ ["--with-intree-gmp" | Just _ <- pure (crossTarget bc) ]
+ ++ ["--with-intree-gmp" | isJust (crossTarget bc) || ubsan bc || asan bc ]
++ ["--with-system-libffi" | crossTarget bc == Just "wasm32-wasi" ]
++ ["--enable-ipe-data-compression" | withZstd bc ]
++ ["--enable-strict-ghc-toolchain-check"]
@@ -188,6 +189,7 @@ mkJobFlavour BuildConfig{..} = Flavour buildFlavour opts
[HostFullyStatic | hostFullyStatic] ++
[ThreadSanitiser | threadSanitiser] ++
[UBSan | ubsan] ++
+ [ASan | asan] ++
[NoSplitSections | noSplitSections, buildFlavour == Release ] ++
[BootNonmovingGc | validateNonmovingGc ] ++
[TextWithSIMDUTF | textWithSIMDUTF]
@@ -201,11 +203,12 @@ data FlavourTrans =
| HostFullyStatic
| ThreadSanitiser
| UBSan
+ | ASan
| NoSplitSections
| BootNonmovingGc
| TextWithSIMDUTF
-data BaseFlavour = Release | Validate | SlowValidate deriving Eq
+data BaseFlavour = Release | QuickValidate | Validate | SlowValidate deriving Eq
-----------------------------------------------------------------------------
-- Build Configurations
@@ -230,6 +233,7 @@ vanilla = BuildConfig
, tablesNextToCode = True
, threadSanitiser = False
, ubsan = False
+ , asan = False
, noSplitSections = False
, validateNonmovingGc = False
, textWithSIMDUTF = False
@@ -283,8 +287,14 @@ llvm = vanilla { llvmBootstrap = True }
tsan :: BuildConfig
tsan = vanilla { threadSanitiser = True }
-enableUBSan :: BuildConfig
-enableUBSan = vanilla { withDwarf = True, ubsan = True }
+enableUBSanASan :: BuildConfig
+enableUBSanASan =
+ vanilla
+ { buildFlavour = QuickValidate,
+ withDwarf = True,
+ ubsan = True,
+ asan = True
+ }
noTntc :: BuildConfig
noTntc = vanilla { tablesNextToCode = False }
@@ -372,6 +382,7 @@ flavourString :: Flavour -> String
flavourString (Flavour base trans) = base_string base ++ concatMap (("+" ++) . flavour_string) trans
where
base_string Release = "release"
+ base_string QuickValidate = "quick-validate"
base_string Validate = "validate"
base_string SlowValidate = "slow-validate"
@@ -381,6 +392,7 @@ flavourString (Flavour base trans) = base_string base ++ concatMap (("+" ++) . f
flavour_string HostFullyStatic = "host_fully_static"
flavour_string ThreadSanitiser = "thread_sanitizer_cmm"
flavour_string UBSan = "ubsan"
+ flavour_string ASan = "asan"
flavour_string NoSplitSections = "no_split_sections"
flavour_string BootNonmovingGc = "boot_nonmoving_gc"
flavour_string TextWithSIMDUTF = "text_simdutf"
@@ -1213,15 +1225,24 @@ fedora_x86 =
, hackage_doc_job (disableValidate (standardBuildsWithConfig Amd64 (Linux Fedora43) releaseConfig))
, disableValidate (standardBuildsWithConfig Amd64 (Linux Fedora43) dwarf)
, disableValidate (standardBuilds Amd64 (Linux Fedora43))
- -- For UBSan jobs, only enable for validate/nightly pipelines.
- -- Also disable docs since it's not the point for UBSan jobs.
+ -- For UBSan/ASan jobs, only enable for validate/nightly
+ -- pipelines. Also disable docs since it's not the point for
+ -- UBSan/ASan jobs.
+ --
+ -- See
+ -- https://github.com/llvm/llvm-project/blob/llvmorg-21.1.8/compiler-rt/lib/sa…
+ -- for ASAN options help, for now these are required to pass the
+ -- testsuite
, modifyJobs
( setVariable "HADRIAN_ARGS" "--docs=none"
. addVariable
"UBSAN_OPTIONS"
"suppressions=$CI_PROJECT_DIR/rts/.ubsan-suppressions"
+ . addVariable
+ "ASAN_OPTIONS"
+ "detect_leaks=false:handle_segv=0:handle_sigfpe=0:verify_asan_link_order=false"
)
- $ validateBuilds Amd64 (Linux Fedora43) enableUBSan
+ $ validateBuilds Amd64 (Linux Fedora43) enableUBSanASan
]
where
hackage_doc_job = rename (<> "-hackage") . modifyJobs (addVariable "HADRIAN_ARGS" "--haddock-for-hackage")
=====================================
.gitlab/jobs.yaml
=====================================
@@ -2942,7 +2942,7 @@
"XZ_OPT": "-9"
}
},
- "nightly-x86_64-linux-fedora43-release": {
+ "nightly-x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -2953,7 +2953,7 @@
"artifacts": {
"expire_in": "8 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-release.tar.xz",
+ "ghc-x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -2995,17 +2995,20 @@
"x86_64-linux"
],
"variables": {
+ "ASAN_OPTIONS": "detect_leaks=false:handle_segv=0:handle_sigfpe=0:verify_asan_link_order=false",
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-release",
- "BUILD_FLAVOUR": "release",
- "CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan",
+ "BUILD_FLAVOUR": "quick-validate+debug_info+ubsan+asan",
+ "CONFIGURE_ARGS": "--with-intree-gmp --enable-strict-ghc-toolchain-check",
+ "HADRIAN_ARGS": "--docs=none",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-release",
+ "TEST_ENV": "x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan",
+ "UBSAN_OPTIONS": "suppressions=$CI_PROJECT_DIR/rts/.ubsan-suppressions",
"XZ_OPT": "-9"
}
},
- "nightly-x86_64-linux-fedora43-release-hackage": {
+ "nightly-x86_64-linux-fedora43-release": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -3062,14 +3065,13 @@
"BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-release",
"BUILD_FLAVOUR": "release",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
- "HADRIAN_ARGS": "--haddock-for-hackage",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
"TEST_ENV": "x86_64-linux-fedora43-release",
"XZ_OPT": "-9"
}
},
- "nightly-x86_64-linux-fedora43-validate": {
+ "nightly-x86_64-linux-fedora43-release-hackage": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -3080,7 +3082,7 @@
"artifacts": {
"expire_in": "8 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-validate.tar.xz",
+ "ghc-x86_64-linux-fedora43-release.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -3123,16 +3125,17 @@
],
"variables": {
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate",
- "BUILD_FLAVOUR": "validate",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-release",
+ "BUILD_FLAVOUR": "release",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
+ "HADRIAN_ARGS": "--haddock-for-hackage",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-validate",
+ "TEST_ENV": "x86_64-linux-fedora43-release",
"XZ_OPT": "-9"
}
},
- "nightly-x86_64-linux-fedora43-validate+debug_info": {
+ "nightly-x86_64-linux-fedora43-validate": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -3143,7 +3146,7 @@
"artifacts": {
"expire_in": "8 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-validate+debug_info.tar.xz",
+ "ghc-x86_64-linux-fedora43-validate.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -3186,16 +3189,16 @@
],
"variables": {
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate+debug_info",
- "BUILD_FLAVOUR": "validate+debug_info",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate",
+ "BUILD_FLAVOUR": "validate",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-validate+debug_info",
+ "TEST_ENV": "x86_64-linux-fedora43-validate",
"XZ_OPT": "-9"
}
},
- "nightly-x86_64-linux-fedora43-validate+debug_info+ubsan": {
+ "nightly-x86_64-linux-fedora43-validate+debug_info": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -3206,7 +3209,7 @@
"artifacts": {
"expire_in": "8 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-validate+debug_info+ubsan.tar.xz",
+ "ghc-x86_64-linux-fedora43-validate+debug_info.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -3249,14 +3252,12 @@
],
"variables": {
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate+debug_info+ubsan",
- "BUILD_FLAVOUR": "validate+debug_info+ubsan",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate+debug_info",
+ "BUILD_FLAVOUR": "validate+debug_info",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
- "HADRIAN_ARGS": "--docs=none",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-validate+debug_info+ubsan",
- "UBSAN_OPTIONS": "suppressions=$CI_PROJECT_DIR/rts/.ubsan-suppressions",
+ "TEST_ENV": "x86_64-linux-fedora43-validate+debug_info",
"XZ_OPT": "-9"
}
},
@@ -7097,7 +7098,7 @@
"TEST_ENV": "x86_64-linux-deb9-validate"
}
},
- "x86_64-linux-fedora43-release": {
+ "x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -7108,7 +7109,7 @@
"artifacts": {
"expire_in": "2 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-release.tar.xz",
+ "ghc-x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -7134,7 +7135,7 @@
],
"rules": [
{
- "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-release(\\s|$).*/)) || (($ONLY_JOBS == null) && ((\"true\" == \"true\")))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
+ "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-quick-validate\\+debug_info\\+ubsan\\+asan(\\s|$).*/)) || (($ONLY_JOBS == null) && ((($CI_MERGE_REQUEST_LABELS =~ /.*full-ci.*/) || ($CI_MERGE_REQUEST_LABELS =~ /.*marge_bot_batch_merge_job.*/) || ($CI_COMMIT_BRANCH == \"master\") || ($CI_COMMIT_BRANCH =~ /ghc-[0-9]+\\.[0-9]+/))))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
"when": "on_success"
}
],
@@ -7150,16 +7151,19 @@
"x86_64-linux"
],
"variables": {
+ "ASAN_OPTIONS": "detect_leaks=false:handle_segv=0:handle_sigfpe=0:verify_asan_link_order=false",
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-release",
- "BUILD_FLAVOUR": "release",
- "CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan",
+ "BUILD_FLAVOUR": "quick-validate+debug_info+ubsan+asan",
+ "CONFIGURE_ARGS": "--with-intree-gmp --enable-strict-ghc-toolchain-check",
+ "HADRIAN_ARGS": "--docs=none",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-release"
+ "TEST_ENV": "x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan",
+ "UBSAN_OPTIONS": "suppressions=$CI_PROJECT_DIR/rts/.ubsan-suppressions"
}
},
- "x86_64-linux-fedora43-release-hackage": {
+ "x86_64-linux-fedora43-release": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -7196,7 +7200,7 @@
],
"rules": [
{
- "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-release(\\s|$).*/)) || (($ONLY_JOBS == null) && (\"disabled\" != \"disabled\"))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
+ "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-release(\\s|$).*/)) || (($ONLY_JOBS == null) && ((\"true\" == \"true\")))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
"when": "on_success"
}
],
@@ -7216,13 +7220,12 @@
"BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-release",
"BUILD_FLAVOUR": "release",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
- "HADRIAN_ARGS": "--haddock-for-hackage",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
"TEST_ENV": "x86_64-linux-fedora43-release"
}
},
- "x86_64-linux-fedora43-validate": {
+ "x86_64-linux-fedora43-release-hackage": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -7233,7 +7236,7 @@
"artifacts": {
"expire_in": "2 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-validate.tar.xz",
+ "ghc-x86_64-linux-fedora43-release.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -7259,7 +7262,7 @@
],
"rules": [
{
- "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-validate(\\s|$).*/)) || (($ONLY_JOBS == null) && (\"disabled\" != \"disabled\"))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
+ "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-release(\\s|$).*/)) || (($ONLY_JOBS == null) && (\"disabled\" != \"disabled\"))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
"when": "on_success"
}
],
@@ -7276,15 +7279,16 @@
],
"variables": {
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate",
- "BUILD_FLAVOUR": "validate",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-release",
+ "BUILD_FLAVOUR": "release",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
+ "HADRIAN_ARGS": "--haddock-for-hackage",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-validate"
+ "TEST_ENV": "x86_64-linux-fedora43-release"
}
},
- "x86_64-linux-fedora43-validate+debug_info": {
+ "x86_64-linux-fedora43-validate": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -7295,7 +7299,7 @@
"artifacts": {
"expire_in": "2 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-validate+debug_info.tar.xz",
+ "ghc-x86_64-linux-fedora43-validate.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -7321,7 +7325,7 @@
],
"rules": [
{
- "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-validate\\+debug_info(\\s|$).*/)) || (($ONLY_JOBS == null) && (\"disabled\" != \"disabled\"))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
+ "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-validate(\\s|$).*/)) || (($ONLY_JOBS == null) && (\"disabled\" != \"disabled\"))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
"when": "on_success"
}
],
@@ -7338,15 +7342,15 @@
],
"variables": {
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate+debug_info",
- "BUILD_FLAVOUR": "validate+debug_info",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate",
+ "BUILD_FLAVOUR": "validate",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-validate+debug_info"
+ "TEST_ENV": "x86_64-linux-fedora43-validate"
}
},
- "x86_64-linux-fedora43-validate+debug_info+ubsan": {
+ "x86_64-linux-fedora43-validate+debug_info": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -7357,7 +7361,7 @@
"artifacts": {
"expire_in": "2 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-validate+debug_info+ubsan.tar.xz",
+ "ghc-x86_64-linux-fedora43-validate+debug_info.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -7383,7 +7387,7 @@
],
"rules": [
{
- "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-validate\\+debug_info\\+ubsan(\\s|$).*/)) || (($ONLY_JOBS == null) && ((($CI_MERGE_REQUEST_LABELS =~ /.*full-ci.*/) || ($CI_MERGE_REQUEST_LABELS =~ /.*marge_bot_batch_merge_job.*/) || ($CI_COMMIT_BRANCH == \"master\") || ($CI_COMMIT_BRANCH =~ /ghc-[0-9]+\\.[0-9]+/))))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
+ "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-validate\\+debug_info(\\s|$).*/)) || (($ONLY_JOBS == null) && (\"disabled\" != \"disabled\"))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
"when": "on_success"
}
],
@@ -7400,14 +7404,12 @@
],
"variables": {
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate+debug_info+ubsan",
- "BUILD_FLAVOUR": "validate+debug_info+ubsan",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate+debug_info",
+ "BUILD_FLAVOUR": "validate+debug_info",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
- "HADRIAN_ARGS": "--docs=none",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-validate+debug_info+ubsan",
- "UBSAN_OPTIONS": "suppressions=$CI_PROJECT_DIR/rts/.ubsan-suppressions"
+ "TEST_ENV": "x86_64-linux-fedora43-validate+debug_info"
}
},
"x86_64-linux-rocky8-validate": {
=====================================
hadrian/doc/flavours.md
=====================================
@@ -242,6 +242,10 @@ The supported transformers are listed below:
<td><code>ubsan</code></td>
<td>Build all stage1+ C/C++ code with UndefinedBehaviorSanitizer support</td>
</tr>
+ <tr>
+ <td><code>asan</code></td>
+ <td>Build all stage1+ C/C++ code with AddressSanitizer support</td>
+ </tr>
<tr>
<td><code>llvm</code></td>
<td>Use GHC's LLVM backend (`-fllvm`) for all stage1+ compilation.</td>
=====================================
hadrian/src/Flavour.hs
=====================================
@@ -8,6 +8,7 @@ module Flavour
, splitSections
, enableThreadSanitizer
, enableUBSan
+ , enableASan
, enableLateCCS
, enableHashUnitIds
, enableDebugInfo, enableTickyGhc
@@ -57,6 +58,7 @@ flavourTransformers = M.fromList
, "thread_sanitizer" =: enableThreadSanitizer False
, "thread_sanitizer_cmm" =: enableThreadSanitizer True
, "ubsan" =: enableUBSan
+ , "asan" =: enableASan
, "llvm" =: viaLlvmBackend
, "profiled_ghc" =: enableProfiledGhc
, "no_dynamic_ghc" =: disableDynamicGhcPrograms
@@ -306,6 +308,42 @@ enableUBSan =
builder Testsuite ? arg "--config=have_ubsan=True"
]
+-- | Build all stage1+ C/C++ code with AddressSanitizer support:
+-- https://clang.llvm.org/docs/AddressSanitizer.html
+enableASan :: Flavour -> Flavour
+enableASan =
+ addArgs $
+ notStage0
+ ? mconcat
+ [ package rts
+ ? builder (Cabal Flags)
+ ? arg "+asan"
+ <> (needSharedLibSAN ? arg "+shared-libsan"),
+ builder (Ghc CompileHs)
+ ? arg "-optc-Og"
+ <> arg "-optc-fno-omit-frame-pointer"
+ <> arg "-optc-fsanitize=address",
+ builder (Ghc CompileCWithGhc)
+ ? ((not <$> input "**/Hash.c") ? arg "-optc-Og")
+ <> arg "-optc-fno-omit-frame-pointer"
+ <> arg "-optc-fsanitize=address",
+ builder (Ghc CompileCppWithGhc)
+ ? arg "-optcxx-Og"
+ <> arg "-optcxx-fno-omit-frame-pointer"
+ <> arg "-optcxx-fsanitize=address",
+ builder (Ghc LinkHs)
+ ? arg "-optc-Og"
+ <> arg "-optc-fno-omit-frame-pointer"
+ <> arg "-optc-fsanitize=address"
+ <> arg "-optl-fsanitize=address"
+ <> (needSharedLibSAN ? arg "-optl-shared-libsan"),
+ builder (Cc CompileC)
+ ? arg "-Og"
+ <> arg "-fno-omit-frame-pointer"
+ <> arg "-fsanitize=address",
+ builder Testsuite ? arg "--config=have_asan=True"
+ ]
+
-- | Use the LLVM backend in stages 1 and later.
viaLlvmBackend :: Flavour -> Flavour
viaLlvmBackend = addArgs $ notStage0 ? builder Ghc ? arg "-fllvm"
=====================================
hadrian/src/Rules/Gmp.hs
=====================================
@@ -126,6 +126,12 @@ gmpRules = do
interpretInContext ctx $
mconcat
[ getStagedCCFlags
+ -- gmp fails to configure with newer compilers
+ -- that default to c23:
+ -- https://gmplib.org/list-archives/gmp-devel/2025-January/006279.html.
+ -- for now just manually specify -std=gnu11 until
+ -- next upstream release.
+ , arg "-std=gnu11"
-- gmp symbols are only used by bignum logic in
-- ghc-internal and shouldn't be exported by the
-- ghc-internal shared library.
=====================================
libraries/ghc-internal/configure.ac
=====================================
@@ -195,28 +195,10 @@ dnl--------------------------------------------------------------------
if test "$HaveFrameworkGMP" = "YES" || test "$HaveLibGmp" = "YES"
then
AC_MSG_RESULT([no])
- UseIntreeGmp=0
AC_CHECK_HEADER([gmp.h], , [AC_MSG_ERROR([Cannot find gmp.h])])
-
- AC_MSG_CHECKING([GMP version])
- AC_COMPUTE_INT(GhcGmpVerMj, __GNU_MP_VERSION, [#include <gmp.h>],
- AC_MSG_ERROR([Unable to get value of __GNU_MP_VERSION]))
- AC_COMPUTE_INT(GhcGmpVerMi, __GNU_MP_VERSION_MINOR, [#include <gmp.h>],
- AC_MSG_ERROR([Unable to get value of __GNU_MP_VERSION_MINOR]))
- AC_COMPUTE_INT(GhcGmpVerPl, __GNU_MP_VERSION_PATCHLEVEL, [#include <gmp.h>],
- AC_MSG_ERROR([Unable to get value of __GNU_MP_VERSION_PATCHLEVEL]))
- AC_MSG_RESULT([$GhcGmpVerMj.$GhcGmpVerMi.$GhcGmpVerPl])
-
else
AC_MSG_RESULT([yes])
- UseIntreeGmp=1
HaveSecurePowm=1
-
- AC_MSG_CHECKING([GMP version])
- GhcGmpVerMj=6
- GhcGmpVerMi=1
- GhcGmpVerPl=2
- AC_MSG_RESULT([$GhcGmpVerMj.$GhcGmpVerMi.$GhcGmpVerPl])
fi
GMP_INSTALL_INCLUDES="HsIntegerGmp.h ghc-gmp.h"
@@ -231,10 +213,6 @@ AC_SUBST(GMP_INSTALL_INCLUDES)
AC_SUBST(HaveLibGmp)
AC_SUBST(HaveFrameworkGMP)
AC_SUBST(HaveSecurePowm)
-AC_SUBST(UseIntreeGmp)
-AC_SUBST(GhcGmpVerMj)
-AC_SUBST(GhcGmpVerMi)
-AC_SUBST(GhcGmpVerPl)
# Compute offsets/sizes used by jsbits/base.js
if test "$host" = "javascript-ghcjs"
=====================================
libraries/ghc-internal/include/HsIntegerGmp.h.in
=====================================
@@ -1,14 +1,4 @@
#pragma once
-/* Whether GMP is embedded into ghc-internal */
-#define GHC_GMP_INTREE @UseIntreeGmp@
-
-/* The following values denote the GMP version used during GHC build-time */
-#define GHC_GMP_VERSION_MJ @GhcGmpVerMj@
-#define GHC_GMP_VERSION_MI @GhcGmpVerMi@
-#define GHC_GMP_VERSION_PL @GhcGmpVerPl@
-#define GHC_GMP_VERSION \
- (@GhcGmpVerMj@ * 10000 + @GhcGmpVerMi@ * 100 + @GhcGmpVerPl@)
-
/* Whether GMP supports mpz_powm_sec */
#define HAVE_SECURE_POWM @HaveSecurePowm@
=====================================
rts/Task.c
=====================================
@@ -183,6 +183,7 @@ freeTask (Task *task)
stgFree(incall);
}
for (incall = task->spare_incalls; incall != NULL; incall = next) {
+ __ghc_asan_unpoison_memory_region(incall, sizeof(InCall));
next = incall->next;
stgFree(incall);
}
@@ -252,6 +253,7 @@ newInCall (Task *task)
if (task->spare_incalls != NULL) {
incall = task->spare_incalls;
+ __ghc_asan_unpoison_memory_region(incall, sizeof(InCall));
task->spare_incalls = incall->next;
task->n_spare_incalls--;
} else {
@@ -283,6 +285,7 @@ endInCall (Task *task)
stgFree(incall);
} else {
incall->next = task->spare_incalls;
+ __ghc_asan_poison_memory_region(incall, sizeof(InCall));
task->spare_incalls = incall;
task->n_spare_incalls++;
}
=====================================
rts/include/Stg.h
=====================================
@@ -335,6 +335,7 @@ external prototype return neither of these types to workaround #11395.
#include "stg/MachRegsForHost.h"
#include "stg/Regs.h"
#include "stg/Ticky.h"
+#include "rts/ASANUtils.h"
#include "rts/TSANUtils.h"
#if IN_STG_CODE
=====================================
rts/include/rts/ASANUtils.h
=====================================
@@ -0,0 +1,33 @@
+#pragma once
+
+#if defined(__SANITIZE_ADDRESS__)
+#define ASAN_ENABLED
+#elif defined(__has_feature)
+#if __has_feature(address_sanitizer)
+#define ASAN_ENABLED
+#endif
+#endif
+
+#if defined(ASAN_ENABLED)
+#include <sanitizer/asan_interface.h>
+#define USED_IF_ASAN
+#else
+#include <stdlib.h>
+#define USED_IF_ASAN __attribute__((unused))
+#endif
+
+static inline void
+__ghc_asan_poison_memory_region(void const volatile *addr USED_IF_ASAN,
+ size_t size USED_IF_ASAN) {
+#if defined(ASAN_ENABLED)
+ __asan_poison_memory_region(addr, size);
+#endif
+}
+
+static inline void
+__ghc_asan_unpoison_memory_region(void const volatile *addr USED_IF_ASAN,
+ size_t size USED_IF_ASAN) {
+#if defined(ASAN_ENABLED)
+ __asan_unpoison_memory_region(addr, size);
+#endif
+}
=====================================
rts/rts.cabal
=====================================
@@ -97,6 +97,12 @@ flag ubsan
UndefinedBehaviorSanitizer.
default: False
manual: True
+flag asan
+ description:
+ Link with -fsanitize=address, to be enabled when building with
+ AddressSanitizer.
+ default: False
+ manual: True
flag shared-libsan
description:
Link with -shared-libsan, to guarantee only one copy of the
@@ -216,6 +222,9 @@ library
if flag(ubsan)
ld-options: -fsanitize=undefined
+ if flag(asan)
+ ld-options: -fsanitize=address
+
if flag(shared-libsan)
ld-options: -shared-libsan
@@ -280,6 +289,7 @@ library
-- ^ generated
rts/ghc_ffi.h
rts/Adjustor.h
+ rts/ASANUtils.h
rts/ExecPage.h
rts/BlockSignals.h
rts/Bytecodes.h
=====================================
rts/sm/BlockAlloc.c
=====================================
@@ -261,6 +261,8 @@ initGroup(bdescr *head)
head[i].flags = 0;
}
#endif
+
+ __ghc_asan_unpoison_memory_region(head->start, (W_)head->blocks * BLOCK_SIZE);
}
#if SIZEOF_VOID_P == SIZEOF_LONG
@@ -474,6 +476,7 @@ alloc_mega_group (uint32_t node, StgWord mblocks)
bd = alloc_mega_group_from_free_list(&deferred_free_mblock_list[node], n, &best);
if(bd)
{
+ __ghc_asan_unpoison_memory_region(bd->start, (W_)bd->blocks * BLOCK_SIZE);
return bd;
}
else if(!best)
@@ -490,6 +493,7 @@ alloc_mega_group (uint32_t node, StgWord mblocks)
if (bd)
{
+ __ghc_asan_unpoison_memory_region(bd->start, (W_)bd->blocks * BLOCK_SIZE);
return bd;
}
else if (best)
@@ -500,6 +504,7 @@ alloc_mega_group (uint32_t node, StgWord mblocks)
(best_mblocks-mblocks)*MBLOCK_SIZE);
best->blocks = MBLOCK_GROUP_BLOCKS(best_mblocks - mblocks);
+ __ghc_asan_unpoison_memory_region(MBLOCK_ROUND_DOWN(bd), mblocks * MBLOCK_SIZE);
initMBlock(MBLOCK_ROUND_DOWN(bd), node);
}
else
@@ -878,6 +883,8 @@ free_mega_group (bdescr *mg)
IF_DEBUG(sanity, checkFreeListSanity());
}
+
+ __ghc_asan_poison_memory_region(mg->start, (W_)mg->blocks * BLOCK_SIZE);
}
static void
@@ -925,6 +932,8 @@ free_deferred_mega_groups (uint32_t node)
// coalesce forwards
coalesce_mblocks(mg);
+ __ghc_asan_poison_memory_region(mg->start, (W_)mg->blocks * BLOCK_SIZE);
+
// initialize search for next round
prev = mg;
bd = prev->link;
@@ -1045,6 +1054,8 @@ freeGroup(bdescr *p)
setup_tail(p);
free_list_insert(node,p);
+ __ghc_asan_poison_memory_region(p->start, (W_)p->blocks * BLOCK_SIZE);
+
IF_DEBUG(sanity, checkFreeListSanity());
}
=====================================
rts/sm/MBlock.c
=====================================
@@ -579,6 +579,8 @@ getMBlocks(uint32_t n)
ret = getCommittedMBlocks(n);
+ __ghc_asan_unpoison_memory_region(ret, (W_)n * MBLOCK_SIZE);
+
debugTrace(DEBUG_gc, "allocated %d megablock(s) at %p",n,ret);
mblocks_allocated += n;
@@ -611,6 +613,8 @@ freeMBlocks(void *addr, uint32_t n)
mblocks_allocated -= n;
+ __ghc_asan_poison_memory_region(addr, (W_)n * MBLOCK_SIZE);
+
decommitMBlocks(addr, n);
}
=====================================
testsuite/driver/testglobals.py
=====================================
@@ -189,6 +189,9 @@ class TestConfig:
# Are we running with UndefinedBehaviorSanitizer enabled?
self.have_ubsan = False
+ # Are we running with AddressSanitizer enabled?
+ self.have_asan = False
+
# Do symbols use leading underscores?
self.leading_underscore = False
=====================================
testsuite/driver/testlib.py
=====================================
@@ -1093,6 +1093,9 @@ def have_thread_sanitizer( ) -> bool:
def have_ubsan( ) -> bool:
return config.have_ubsan
+def have_asan( ) -> bool:
+ return config.have_asan
+
def gcc_as_cmmp() -> bool:
return config.cmm_cpp_is_gcc
=====================================
testsuite/tests/ffi/should_run/all.T
=====================================
@@ -192,6 +192,9 @@ test('rts_clearMemory', [
extra_ways(['g1', 'nursery_chunks', 'nonmoving', 'compacting_gc', 'sanity']),
# On windows, nonmoving way fails with bad exit code (2816)
when(opsys('mingw32'), fragile(23091)),
+ # For simplicity, ASAN poisoning/unpoisoning logic is omitted
+ # from rts_clearMemory implementation
+ when(have_asan(), skip),
req_c,
pre_cmd('$MAKE -s --no-print-directory rts_clearMemory_setup') ],
# Same hack as ffi023
=====================================
testsuite/tests/rts/T18623/all.T
=====================================
@@ -8,6 +8,8 @@ test('T18623',
# Recent versions of osx report an error when running `ulimit -v`
when(opsys('darwin'), skip),
when(arch('powerpc64le'), skip),
+ # ASan can't allocate shadow memory
+ when(have_asan(), skip),
cmd_prefix('ulimit -v ' + str(8 * 1024 ** 2) + ' && '),
ignore_stdout],
run_command,
=====================================
testsuite/tests/rts/all.T
=====================================
@@ -105,6 +105,8 @@ def remove_parenthesis(s):
return re.sub(r'\s+\([^)]*\)', '', s)
test('outofmem', [ when(opsys('darwin'), skip),
+ # ASan shadow memory allocation blows up
+ when(have_asan(), skip),
# this is believed to cause other processes to die
# that happen concurrently while the outofmem test
# runs in CI. As such we'll need to disable it on
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/cc93096d54e506b1e576ff6648e66c…
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/cc93096d54e506b1e576ff6648e66c…
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[Git][ghc/ghc][wip/terrorjack/asan] 7 commits: hadrian: fix in-tree gmp configure error on newer c compilers
by Cheng Shao (＠TerrorJack) 30 Dec '25
by Cheng Shao (＠TerrorJack) 30 Dec '25
30 Dec '25
Cheng Shao pushed to branch wip/terrorjack/asan at Glasgow Haskell Compiler / GHC
Commits:
21bc7159 by Cheng Shao at 2025-12-30T17:35:02+01:00
hadrian: fix in-tree gmp configure error on newer c compilers
Building in-tree gmp on newer c compilers that default to c23 fails at
configure stage, this patch fixes it, see added comment for
explanation.
- - - - -
26833462 by Cheng Shao at 2025-12-30T17:35:03+01:00
hadrian: add support for building with AddressSanitizer
This patch adds a +asan flavour transformer to hadrian to build all
stage1+ C/C++ code with AddressBehaviorSanitizer. This is particularly
useful to catch potential out-of-bounds and use-after-free bugs in the
RTS codebase.
- - - - -
3ab6db7c by Cheng Shao at 2025-12-30T17:36:34+01:00
ci: add ubsan+asan job
We now have a
`x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan`
validate/nightly job with both UBSan/ASan enabled. We build with
`quick-validate` instead of `validate` since the extra
assertion/linting is already provided by other jobs anyway and it's
better to reserve the CI time budget for UBSan/ASan overhead.
- - - - -
6fd27149 by Cheng Shao at 2025-12-30T17:36:39+01:00
rts: add ASAN instrumentation to mblock allocator
- - - - -
9d0ebb1f by Cheng Shao at 2025-12-30T17:36:39+01:00
rts: add ASAN instrumentation to mgroup allocator
- - - - -
e5c69101 by Cheng Shao at 2025-12-30T17:36:39+01:00
rts: add ASAN instrumentation to block allocator
- - - - -
cc93096d by Cheng Shao at 2025-12-30T17:36:39+01:00
rts: add ASAN instrumentation to per-Task InCall free list
- - - - -
16 changed files:
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/jobs.yaml
- hadrian/doc/flavours.md
- hadrian/src/Flavour.hs
- hadrian/src/Rules/Gmp.hs
- rts/Task.c
- rts/include/Stg.h
- + rts/include/rts/ASANUtils.h
- rts/rts.cabal
- rts/sm/BlockAlloc.c
- rts/sm/MBlock.c
- testsuite/driver/testglobals.py
- testsuite/driver/testlib.py
- testsuite/tests/ffi/should_run/all.T
- testsuite/tests/rts/T18623/all.T
- testsuite/tests/rts/all.T
Changes:
=====================================
.gitlab/generate-ci/gen_ci.hs
=====================================
@@ -162,6 +162,7 @@ data BuildConfig
, tablesNextToCode :: Bool
, threadSanitiser :: Bool
, ubsan :: Bool
+ , asan :: Bool
, noSplitSections :: Bool
, validateNonmovingGc :: Bool
, textWithSIMDUTF :: Bool
@@ -173,7 +174,7 @@ configureArgsStr :: BuildConfig -> String
configureArgsStr bc = unwords $
["--enable-unregisterised"| unregisterised bc ]
++ ["--disable-tables-next-to-code" | not (tablesNextToCode bc) ]
- ++ ["--with-intree-gmp" | Just _ <- pure (crossTarget bc) ]
+ ++ ["--with-intree-gmp" | isJust (crossTarget bc) || ubsan bc || asan bc ]
++ ["--with-system-libffi" | crossTarget bc == Just "wasm32-wasi" ]
++ ["--enable-ipe-data-compression" | withZstd bc ]
++ ["--enable-strict-ghc-toolchain-check"]
@@ -188,6 +189,7 @@ mkJobFlavour BuildConfig{..} = Flavour buildFlavour opts
[HostFullyStatic | hostFullyStatic] ++
[ThreadSanitiser | threadSanitiser] ++
[UBSan | ubsan] ++
+ [ASan | asan] ++
[NoSplitSections | noSplitSections, buildFlavour == Release ] ++
[BootNonmovingGc | validateNonmovingGc ] ++
[TextWithSIMDUTF | textWithSIMDUTF]
@@ -201,11 +203,12 @@ data FlavourTrans =
| HostFullyStatic
| ThreadSanitiser
| UBSan
+ | ASan
| NoSplitSections
| BootNonmovingGc
| TextWithSIMDUTF
-data BaseFlavour = Release | Validate | SlowValidate deriving Eq
+data BaseFlavour = Release | QuickValidate | Validate | SlowValidate deriving Eq
-----------------------------------------------------------------------------
-- Build Configurations
@@ -230,6 +233,7 @@ vanilla = BuildConfig
, tablesNextToCode = True
, threadSanitiser = False
, ubsan = False
+ , asan = False
, noSplitSections = False
, validateNonmovingGc = False
, textWithSIMDUTF = False
@@ -283,8 +287,14 @@ llvm = vanilla { llvmBootstrap = True }
tsan :: BuildConfig
tsan = vanilla { threadSanitiser = True }
-enableUBSan :: BuildConfig
-enableUBSan = vanilla { withDwarf = True, ubsan = True }
+enableUBSanASan :: BuildConfig
+enableUBSanASan =
+ vanilla
+ { buildFlavour = QuickValidate,
+ withDwarf = True,
+ ubsan = True,
+ asan = True
+ }
noTntc :: BuildConfig
noTntc = vanilla { tablesNextToCode = False }
@@ -372,6 +382,7 @@ flavourString :: Flavour -> String
flavourString (Flavour base trans) = base_string base ++ concatMap (("+" ++) . flavour_string) trans
where
base_string Release = "release"
+ base_string QuickValidate = "quick-validate"
base_string Validate = "validate"
base_string SlowValidate = "slow-validate"
@@ -381,6 +392,7 @@ flavourString (Flavour base trans) = base_string base ++ concatMap (("+" ++) . f
flavour_string HostFullyStatic = "host_fully_static"
flavour_string ThreadSanitiser = "thread_sanitizer_cmm"
flavour_string UBSan = "ubsan"
+ flavour_string ASan = "asan"
flavour_string NoSplitSections = "no_split_sections"
flavour_string BootNonmovingGc = "boot_nonmoving_gc"
flavour_string TextWithSIMDUTF = "text_simdutf"
@@ -1213,15 +1225,24 @@ fedora_x86 =
, hackage_doc_job (disableValidate (standardBuildsWithConfig Amd64 (Linux Fedora43) releaseConfig))
, disableValidate (standardBuildsWithConfig Amd64 (Linux Fedora43) dwarf)
, disableValidate (standardBuilds Amd64 (Linux Fedora43))
- -- For UBSan jobs, only enable for validate/nightly pipelines.
- -- Also disable docs since it's not the point for UBSan jobs.
+ -- For UBSan/ASan jobs, only enable for validate/nightly
+ -- pipelines. Also disable docs since it's not the point for
+ -- UBSan/ASan jobs.
+ --
+ -- See
+ -- https://github.com/llvm/llvm-project/blob/llvmorg-21.1.8/compiler-rt/lib/sa…
+ -- for ASAN options help, for now these are required to pass the
+ -- testsuite
, modifyJobs
( setVariable "HADRIAN_ARGS" "--docs=none"
. addVariable
"UBSAN_OPTIONS"
"suppressions=$CI_PROJECT_DIR/rts/.ubsan-suppressions"
+ . addVariable
+ "ASAN_OPTIONS"
+ "detect_leaks=false:handle_segv=0:handle_sigfpe=0:verify_asan_link_order=false"
)
- $ validateBuilds Amd64 (Linux Fedora43) enableUBSan
+ $ validateBuilds Amd64 (Linux Fedora43) enableUBSanASan
]
where
hackage_doc_job = rename (<> "-hackage") . modifyJobs (addVariable "HADRIAN_ARGS" "--haddock-for-hackage")
=====================================
.gitlab/jobs.yaml
=====================================
@@ -2942,7 +2942,7 @@
"XZ_OPT": "-9"
}
},
- "nightly-x86_64-linux-fedora43-release": {
+ "nightly-x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -2953,7 +2953,7 @@
"artifacts": {
"expire_in": "8 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-release.tar.xz",
+ "ghc-x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -2995,17 +2995,20 @@
"x86_64-linux"
],
"variables": {
+ "ASAN_OPTIONS": "detect_leaks=false:handle_segv=0:handle_sigfpe=0:verify_asan_link_order=false",
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-release",
- "BUILD_FLAVOUR": "release",
- "CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan",
+ "BUILD_FLAVOUR": "quick-validate+debug_info+ubsan+asan",
+ "CONFIGURE_ARGS": "--with-intree-gmp --enable-strict-ghc-toolchain-check",
+ "HADRIAN_ARGS": "--docs=none",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-release",
+ "TEST_ENV": "x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan",
+ "UBSAN_OPTIONS": "suppressions=$CI_PROJECT_DIR/rts/.ubsan-suppressions",
"XZ_OPT": "-9"
}
},
- "nightly-x86_64-linux-fedora43-release-hackage": {
+ "nightly-x86_64-linux-fedora43-release": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -3062,14 +3065,13 @@
"BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-release",
"BUILD_FLAVOUR": "release",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
- "HADRIAN_ARGS": "--haddock-for-hackage",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
"TEST_ENV": "x86_64-linux-fedora43-release",
"XZ_OPT": "-9"
}
},
- "nightly-x86_64-linux-fedora43-validate": {
+ "nightly-x86_64-linux-fedora43-release-hackage": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -3080,7 +3082,7 @@
"artifacts": {
"expire_in": "8 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-validate.tar.xz",
+ "ghc-x86_64-linux-fedora43-release.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -3123,16 +3125,17 @@
],
"variables": {
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate",
- "BUILD_FLAVOUR": "validate",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-release",
+ "BUILD_FLAVOUR": "release",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
+ "HADRIAN_ARGS": "--haddock-for-hackage",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-validate",
+ "TEST_ENV": "x86_64-linux-fedora43-release",
"XZ_OPT": "-9"
}
},
- "nightly-x86_64-linux-fedora43-validate+debug_info": {
+ "nightly-x86_64-linux-fedora43-validate": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -3143,7 +3146,7 @@
"artifacts": {
"expire_in": "8 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-validate+debug_info.tar.xz",
+ "ghc-x86_64-linux-fedora43-validate.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -3186,16 +3189,16 @@
],
"variables": {
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate+debug_info",
- "BUILD_FLAVOUR": "validate+debug_info",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate",
+ "BUILD_FLAVOUR": "validate",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-validate+debug_info",
+ "TEST_ENV": "x86_64-linux-fedora43-validate",
"XZ_OPT": "-9"
}
},
- "nightly-x86_64-linux-fedora43-validate+debug_info+ubsan": {
+ "nightly-x86_64-linux-fedora43-validate+debug_info": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -3206,7 +3209,7 @@
"artifacts": {
"expire_in": "8 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-validate+debug_info+ubsan.tar.xz",
+ "ghc-x86_64-linux-fedora43-validate+debug_info.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -3249,14 +3252,12 @@
],
"variables": {
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate+debug_info+ubsan",
- "BUILD_FLAVOUR": "validate+debug_info+ubsan",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate+debug_info",
+ "BUILD_FLAVOUR": "validate+debug_info",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
- "HADRIAN_ARGS": "--docs=none",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-validate+debug_info+ubsan",
- "UBSAN_OPTIONS": "suppressions=$CI_PROJECT_DIR/rts/.ubsan-suppressions",
+ "TEST_ENV": "x86_64-linux-fedora43-validate+debug_info",
"XZ_OPT": "-9"
}
},
@@ -7097,7 +7098,7 @@
"TEST_ENV": "x86_64-linux-deb9-validate"
}
},
- "x86_64-linux-fedora43-release": {
+ "x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -7108,7 +7109,7 @@
"artifacts": {
"expire_in": "2 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-release.tar.xz",
+ "ghc-x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -7134,7 +7135,7 @@
],
"rules": [
{
- "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-release(\\s|$).*/)) || (($ONLY_JOBS == null) && ((\"true\" == \"true\")))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
+ "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-quick-validate\\+debug_info\\+ubsan\\+asan(\\s|$).*/)) || (($ONLY_JOBS == null) && ((($CI_MERGE_REQUEST_LABELS =~ /.*full-ci.*/) || ($CI_MERGE_REQUEST_LABELS =~ /.*marge_bot_batch_merge_job.*/) || ($CI_COMMIT_BRANCH == \"master\") || ($CI_COMMIT_BRANCH =~ /ghc-[0-9]+\\.[0-9]+/))))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
"when": "on_success"
}
],
@@ -7150,16 +7151,19 @@
"x86_64-linux"
],
"variables": {
+ "ASAN_OPTIONS": "detect_leaks=false:handle_segv=0:handle_sigfpe=0:verify_asan_link_order=false",
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-release",
- "BUILD_FLAVOUR": "release",
- "CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan",
+ "BUILD_FLAVOUR": "quick-validate+debug_info+ubsan+asan",
+ "CONFIGURE_ARGS": "--with-intree-gmp --enable-strict-ghc-toolchain-check",
+ "HADRIAN_ARGS": "--docs=none",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-release"
+ "TEST_ENV": "x86_64-linux-fedora43-quick-validate+debug_info+ubsan+asan",
+ "UBSAN_OPTIONS": "suppressions=$CI_PROJECT_DIR/rts/.ubsan-suppressions"
}
},
- "x86_64-linux-fedora43-release-hackage": {
+ "x86_64-linux-fedora43-release": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -7196,7 +7200,7 @@
],
"rules": [
{
- "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-release(\\s|$).*/)) || (($ONLY_JOBS == null) && (\"disabled\" != \"disabled\"))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
+ "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-release(\\s|$).*/)) || (($ONLY_JOBS == null) && ((\"true\" == \"true\")))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
"when": "on_success"
}
],
@@ -7216,13 +7220,12 @@
"BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-release",
"BUILD_FLAVOUR": "release",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
- "HADRIAN_ARGS": "--haddock-for-hackage",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
"TEST_ENV": "x86_64-linux-fedora43-release"
}
},
- "x86_64-linux-fedora43-validate": {
+ "x86_64-linux-fedora43-release-hackage": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -7233,7 +7236,7 @@
"artifacts": {
"expire_in": "2 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-validate.tar.xz",
+ "ghc-x86_64-linux-fedora43-release.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -7259,7 +7262,7 @@
],
"rules": [
{
- "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-validate(\\s|$).*/)) || (($ONLY_JOBS == null) && (\"disabled\" != \"disabled\"))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
+ "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-release(\\s|$).*/)) || (($ONLY_JOBS == null) && (\"disabled\" != \"disabled\"))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
"when": "on_success"
}
],
@@ -7276,15 +7279,16 @@
],
"variables": {
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate",
- "BUILD_FLAVOUR": "validate",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-release",
+ "BUILD_FLAVOUR": "release",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
+ "HADRIAN_ARGS": "--haddock-for-hackage",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-validate"
+ "TEST_ENV": "x86_64-linux-fedora43-release"
}
},
- "x86_64-linux-fedora43-validate+debug_info": {
+ "x86_64-linux-fedora43-validate": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -7295,7 +7299,7 @@
"artifacts": {
"expire_in": "2 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-validate+debug_info.tar.xz",
+ "ghc-x86_64-linux-fedora43-validate.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -7321,7 +7325,7 @@
],
"rules": [
{
- "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-validate\\+debug_info(\\s|$).*/)) || (($ONLY_JOBS == null) && (\"disabled\" != \"disabled\"))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
+ "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-validate(\\s|$).*/)) || (($ONLY_JOBS == null) && (\"disabled\" != \"disabled\"))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
"when": "on_success"
}
],
@@ -7338,15 +7342,15 @@
],
"variables": {
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate+debug_info",
- "BUILD_FLAVOUR": "validate+debug_info",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate",
+ "BUILD_FLAVOUR": "validate",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-validate+debug_info"
+ "TEST_ENV": "x86_64-linux-fedora43-validate"
}
},
- "x86_64-linux-fedora43-validate+debug_info+ubsan": {
+ "x86_64-linux-fedora43-validate+debug_info": {
"after_script": [
".gitlab/ci.sh save_cache",
".gitlab/ci.sh save_test_output",
@@ -7357,7 +7361,7 @@
"artifacts": {
"expire_in": "2 weeks",
"paths": [
- "ghc-x86_64-linux-fedora43-validate+debug_info+ubsan.tar.xz",
+ "ghc-x86_64-linux-fedora43-validate+debug_info.tar.xz",
"junit.xml",
"unexpected-test-output.tar.gz"
],
@@ -7383,7 +7387,7 @@
],
"rules": [
{
- "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-validate\\+debug_info\\+ubsan(\\s|$).*/)) || (($ONLY_JOBS == null) && ((($CI_MERGE_REQUEST_LABELS =~ /.*full-ci.*/) || ($CI_MERGE_REQUEST_LABELS =~ /.*marge_bot_batch_merge_job.*/) || ($CI_COMMIT_BRANCH == \"master\") || ($CI_COMMIT_BRANCH =~ /ghc-[0-9]+\\.[0-9]+/))))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
+ "if": "((($ONLY_JOBS) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-validate\\+debug_info(\\s|$).*/)) || (($ONLY_JOBS == null) && (\"disabled\" != \"disabled\"))) && ($RELEASE_JOB != \"yes\") && ($NIGHTLY == null)",
"when": "on_success"
}
],
@@ -7400,14 +7404,12 @@
],
"variables": {
"BIGNUM_BACKEND": "gmp",
- "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate+debug_info+ubsan",
- "BUILD_FLAVOUR": "validate+debug_info+ubsan",
+ "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate+debug_info",
+ "BUILD_FLAVOUR": "validate+debug_info",
"CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
- "HADRIAN_ARGS": "--docs=none",
"INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check",
"RUNTEST_ARGS": "",
- "TEST_ENV": "x86_64-linux-fedora43-validate+debug_info+ubsan",
- "UBSAN_OPTIONS": "suppressions=$CI_PROJECT_DIR/rts/.ubsan-suppressions"
+ "TEST_ENV": "x86_64-linux-fedora43-validate+debug_info"
}
},
"x86_64-linux-rocky8-validate": {
=====================================
hadrian/doc/flavours.md
=====================================
@@ -242,6 +242,10 @@ The supported transformers are listed below:
<td><code>ubsan</code></td>
<td>Build all stage1+ C/C++ code with UndefinedBehaviorSanitizer support</td>
</tr>
+ <tr>
+ <td><code>asan</code></td>
+ <td>Build all stage1+ C/C++ code with AddressSanitizer support</td>
+ </tr>
<tr>
<td><code>llvm</code></td>
<td>Use GHC's LLVM backend (`-fllvm`) for all stage1+ compilation.</td>
=====================================
hadrian/src/Flavour.hs
=====================================
@@ -8,6 +8,7 @@ module Flavour
, splitSections
, enableThreadSanitizer
, enableUBSan
+ , enableASan
, enableLateCCS
, enableHashUnitIds
, enableDebugInfo, enableTickyGhc
@@ -57,6 +58,7 @@ flavourTransformers = M.fromList
, "thread_sanitizer" =: enableThreadSanitizer False
, "thread_sanitizer_cmm" =: enableThreadSanitizer True
, "ubsan" =: enableUBSan
+ , "asan" =: enableASan
, "llvm" =: viaLlvmBackend
, "profiled_ghc" =: enableProfiledGhc
, "no_dynamic_ghc" =: disableDynamicGhcPrograms
@@ -306,6 +308,42 @@ enableUBSan =
builder Testsuite ? arg "--config=have_ubsan=True"
]
+-- | Build all stage1+ C/C++ code with AddressSanitizer support:
+-- https://clang.llvm.org/docs/AddressSanitizer.html
+enableASan :: Flavour -> Flavour
+enableASan =
+ addArgs $
+ notStage0
+ ? mconcat
+ [ package rts
+ ? builder (Cabal Flags)
+ ? arg "+asan"
+ <> (needSharedLibSAN ? arg "+shared-libsan"),
+ builder (Ghc CompileHs)
+ ? arg "-optc-Og"
+ <> arg "-optc-fno-omit-frame-pointer"
+ <> arg "-optc-fsanitize=address",
+ builder (Ghc CompileCWithGhc)
+ ? ((not <$> input "**/Hash.c") ? arg "-optc-Og")
+ <> arg "-optc-fno-omit-frame-pointer"
+ <> arg "-optc-fsanitize=address",
+ builder (Ghc CompileCppWithGhc)
+ ? arg "-optcxx-Og"
+ <> arg "-optcxx-fno-omit-frame-pointer"
+ <> arg "-optcxx-fsanitize=address",
+ builder (Ghc LinkHs)
+ ? arg "-optc-Og"
+ <> arg "-optc-fno-omit-frame-pointer"
+ <> arg "-optc-fsanitize=address"
+ <> arg "-optl-fsanitize=address"
+ <> (needSharedLibSAN ? arg "-optl-shared-libsan"),
+ builder (Cc CompileC)
+ ? arg "-Og"
+ <> arg "-fno-omit-frame-pointer"
+ <> arg "-fsanitize=address",
+ builder Testsuite ? arg "--config=have_asan=True"
+ ]
+
-- | Use the LLVM backend in stages 1 and later.
viaLlvmBackend :: Flavour -> Flavour
viaLlvmBackend = addArgs $ notStage0 ? builder Ghc ? arg "-fllvm"
=====================================
hadrian/src/Rules/Gmp.hs
=====================================
@@ -126,6 +126,12 @@ gmpRules = do
interpretInContext ctx $
mconcat
[ getStagedCCFlags
+ -- gmp fails to configure with newer compilers
+ -- that default to c23:
+ -- https://gmplib.org/list-archives/gmp-devel/2025-January/006279.html.
+ -- for now just manually specify -std=gnu11 until
+ -- next upstream release.
+ , arg "-std=gnu11"
-- gmp symbols are only used by bignum logic in
-- ghc-internal and shouldn't be exported by the
-- ghc-internal shared library.
=====================================
rts/Task.c
=====================================
@@ -183,6 +183,7 @@ freeTask (Task *task)
stgFree(incall);
}
for (incall = task->spare_incalls; incall != NULL; incall = next) {
+ __ghc_asan_unpoison_memory_region(incall, sizeof(InCall));
next = incall->next;
stgFree(incall);
}
@@ -252,6 +253,7 @@ newInCall (Task *task)
if (task->spare_incalls != NULL) {
incall = task->spare_incalls;
+ __ghc_asan_unpoison_memory_region(incall, sizeof(InCall));
task->spare_incalls = incall->next;
task->n_spare_incalls--;
} else {
@@ -283,6 +285,7 @@ endInCall (Task *task)
stgFree(incall);
} else {
incall->next = task->spare_incalls;
+ __ghc_asan_poison_memory_region(incall, sizeof(InCall));
task->spare_incalls = incall;
task->n_spare_incalls++;
}
=====================================
rts/include/Stg.h
=====================================
@@ -335,6 +335,7 @@ external prototype return neither of these types to workaround #11395.
#include "stg/MachRegsForHost.h"
#include "stg/Regs.h"
#include "stg/Ticky.h"
+#include "rts/ASANUtils.h"
#include "rts/TSANUtils.h"
#if IN_STG_CODE
=====================================
rts/include/rts/ASANUtils.h
=====================================
@@ -0,0 +1,33 @@
+#pragma once
+
+#if defined(__SANITIZE_ADDRESS__)
+#define ASAN_ENABLED
+#elif defined(__has_feature)
+#if __has_feature(address_sanitizer)
+#define ASAN_ENABLED
+#endif
+#endif
+
+#if defined(ASAN_ENABLED)
+#include <sanitizer/asan_interface.h>
+#define USED_IF_ASAN
+#else
+#include <stdlib.h>
+#define USED_IF_ASAN __attribute__((unused))
+#endif
+
+static inline void
+__ghc_asan_poison_memory_region(void const volatile *addr USED_IF_ASAN,
+ size_t size USED_IF_ASAN) {
+#if defined(ASAN_ENABLED)
+ __asan_poison_memory_region(addr, size);
+#endif
+}
+
+static inline void
+__ghc_asan_unpoison_memory_region(void const volatile *addr USED_IF_ASAN,
+ size_t size USED_IF_ASAN) {
+#if defined(ASAN_ENABLED)
+ __asan_unpoison_memory_region(addr, size);
+#endif
+}
=====================================
rts/rts.cabal
=====================================
@@ -97,6 +97,12 @@ flag ubsan
UndefinedBehaviorSanitizer.
default: False
manual: True
+flag asan
+ description:
+ Link with -fsanitize=address, to be enabled when building with
+ AddressSanitizer.
+ default: False
+ manual: True
flag shared-libsan
description:
Link with -shared-libsan, to guarantee only one copy of the
@@ -216,6 +222,9 @@ library
if flag(ubsan)
ld-options: -fsanitize=undefined
+ if flag(asan)
+ ld-options: -fsanitize=address
+
if flag(shared-libsan)
ld-options: -shared-libsan
@@ -280,6 +289,7 @@ library
-- ^ generated
rts/ghc_ffi.h
rts/Adjustor.h
+ rts/ASANUtils.h
rts/ExecPage.h
rts/BlockSignals.h
rts/Bytecodes.h
=====================================
rts/sm/BlockAlloc.c
=====================================
@@ -261,6 +261,8 @@ initGroup(bdescr *head)
head[i].flags = 0;
}
#endif
+
+ __ghc_asan_unpoison_memory_region(head->start, (W_)head->blocks * BLOCK_SIZE);
}
#if SIZEOF_VOID_P == SIZEOF_LONG
@@ -474,6 +476,7 @@ alloc_mega_group (uint32_t node, StgWord mblocks)
bd = alloc_mega_group_from_free_list(&deferred_free_mblock_list[node], n, &best);
if(bd)
{
+ __ghc_asan_unpoison_memory_region(bd->start, (W_)bd->blocks * BLOCK_SIZE);
return bd;
}
else if(!best)
@@ -490,6 +493,7 @@ alloc_mega_group (uint32_t node, StgWord mblocks)
if (bd)
{
+ __ghc_asan_unpoison_memory_region(bd->start, (W_)bd->blocks * BLOCK_SIZE);
return bd;
}
else if (best)
@@ -500,6 +504,7 @@ alloc_mega_group (uint32_t node, StgWord mblocks)
(best_mblocks-mblocks)*MBLOCK_SIZE);
best->blocks = MBLOCK_GROUP_BLOCKS(best_mblocks - mblocks);
+ __ghc_asan_unpoison_memory_region(MBLOCK_ROUND_DOWN(bd), mblocks * MBLOCK_SIZE);
initMBlock(MBLOCK_ROUND_DOWN(bd), node);
}
else
@@ -878,6 +883,8 @@ free_mega_group (bdescr *mg)
IF_DEBUG(sanity, checkFreeListSanity());
}
+
+ __ghc_asan_poison_memory_region(mg->start, (W_)mg->blocks * BLOCK_SIZE);
}
static void
@@ -925,6 +932,8 @@ free_deferred_mega_groups (uint32_t node)
// coalesce forwards
coalesce_mblocks(mg);
+ __ghc_asan_poison_memory_region(mg->start, (W_)mg->blocks * BLOCK_SIZE);
+
// initialize search for next round
prev = mg;
bd = prev->link;
@@ -1045,6 +1054,8 @@ freeGroup(bdescr *p)
setup_tail(p);
free_list_insert(node,p);
+ __ghc_asan_poison_memory_region(p->start, (W_)p->blocks * BLOCK_SIZE);
+
IF_DEBUG(sanity, checkFreeListSanity());
}
=====================================
rts/sm/MBlock.c
=====================================
@@ -579,6 +579,8 @@ getMBlocks(uint32_t n)
ret = getCommittedMBlocks(n);
+ __ghc_asan_unpoison_memory_region(ret, (W_)n * MBLOCK_SIZE);
+
debugTrace(DEBUG_gc, "allocated %d megablock(s) at %p",n,ret);
mblocks_allocated += n;
@@ -611,6 +613,8 @@ freeMBlocks(void *addr, uint32_t n)
mblocks_allocated -= n;
+ __ghc_asan_poison_memory_region(addr, (W_)n * MBLOCK_SIZE);
+
decommitMBlocks(addr, n);
}
=====================================
testsuite/driver/testglobals.py
=====================================
@@ -189,6 +189,9 @@ class TestConfig:
# Are we running with UndefinedBehaviorSanitizer enabled?
self.have_ubsan = False
+ # Are we running with AddressSanitizer enabled?
+ self.have_asan = False
+
# Do symbols use leading underscores?
self.leading_underscore = False
=====================================
testsuite/driver/testlib.py
=====================================
@@ -1093,6 +1093,9 @@ def have_thread_sanitizer( ) -> bool:
def have_ubsan( ) -> bool:
return config.have_ubsan
+def have_asan( ) -> bool:
+ return config.have_asan
+
def gcc_as_cmmp() -> bool:
return config.cmm_cpp_is_gcc
=====================================
testsuite/tests/ffi/should_run/all.T
=====================================
@@ -192,6 +192,9 @@ test('rts_clearMemory', [
extra_ways(['g1', 'nursery_chunks', 'nonmoving', 'compacting_gc', 'sanity']),
# On windows, nonmoving way fails with bad exit code (2816)
when(opsys('mingw32'), fragile(23091)),
+ # For simplicity, ASAN poisoning/unpoisoning logic is omitted
+ # from rts_clearMemory implementation
+ when(have_asan(), skip),
req_c,
pre_cmd('$MAKE -s --no-print-directory rts_clearMemory_setup') ],
# Same hack as ffi023
=====================================
testsuite/tests/rts/T18623/all.T
=====================================
@@ -8,6 +8,8 @@ test('T18623',
# Recent versions of osx report an error when running `ulimit -v`
when(opsys('darwin'), skip),
when(arch('powerpc64le'), skip),
+ # ASan can't allocate shadow memory
+ when(have_asan(), skip),
cmd_prefix('ulimit -v ' + str(8 * 1024 ** 2) + ' && '),
ignore_stdout],
run_command,
=====================================
testsuite/tests/rts/all.T
=====================================
@@ -105,6 +105,8 @@ def remove_parenthesis(s):
return re.sub(r'\s+\([^)]*\)', '', s)
test('outofmem', [ when(opsys('darwin'), skip),
+ # ASan shadow memory allocation blows up
+ when(have_asan(), skip),
# this is believed to cause other processes to die
# that happen concurrently while the outofmem test
# runs in CI. As such we'll need to disable it on
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/7ae6f345d339fd88b67872523c1011…
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[Git][ghc/ghc][wip/az/ghc-cpp] 189 commits: Fix stack decoding when using profiled runtime
by Alan Zimmerman (＠alanz) 30 Dec '25
by Alan Zimmerman (＠alanz) 30 Dec '25
30 Dec '25
Alan Zimmerman pushed to branch wip/az/ghc-cpp at Glasgow Haskell Compiler / GHC
Commits:
38d65187 by Matthew Pickering at 2025-10-21T13:12:20+01:00
Fix stack decoding when using profiled runtime
There are three fixes in this commit.
* We need to replicate the `InfoTable` and `InfoTableProf`
approach for the other stack constants (see the new Stack.ConstantsProf
file).
* Then we need to appropiately import the profiled or non-profiled
versions.
* Finally, there was an incorrect addition in `stackFrameSize`. We need
to cast after performing addition on words.
Fixes #26507
- - - - -
17231bfb by fendor at 2025-10-21T13:12:20+01:00
Add regression test for #26507
- - - - -
4f5bf93b by Simon Peyton Jones at 2025-10-25T04:05:34-04:00
Postscript to fix for #26255
This MR has comments only
- - - - -
6ef22fa0 by IC Rainbow at 2025-10-26T18:23:01-04:00
Add SIMD primops for bitwise logical operations
This adds 128-bit wide and/or/xor instructions for X86 NCG,
with both SSE and AVX encodings.
```
andFloatX4# :: FloatX4# -> FloatX4# -> FloatX4# -- andps / vandps
andDoubleX2# :: DoubleX2# -> DoubleX2# -> DoubleX2# -- andpd / vandpd
andInt8X16# :: Int8X16# -> Int8X16# -> Int8X16# -- pand / vpand
```
The new primops are available on ARM when using LLVM backend.
Tests added:
- simd015 (floats and doubles)
- simd016 (integers)
- simd017 (words)
Fixes #26417
- - - - -
fbdc623a by sheaf at 2025-10-26T18:23:52-04:00
Add hints for unsolved HasField constraints
This commit adds hints and explanations for unsolved 'HasField'
constraints.
GHC will now provide additional explanations for an unsolved constraint
of the form 'HasField fld_name rec_ty fld_ty'; the details are laid out in
Note [Error messages for unsolved HasField constraints], but briefly:
1. Provide similar name suggestions (e.g. mis-spelled field name)
and import suggestions (record field not in scope).
These result in actionable 'GhcHints', which is helpful to provide
code actions in HLS.
2. Explain why GHC did not solve the constraint, e.g.:
- 'fld_name' is not a string literal (e.g. a type variable)
- 'rec_ty' is a TyCon without any fields, e.g. 'Int' or 'Bool'.
- 'fld_ty' contains existentials variables or foralls.
- The record field is a pattern synonym field (GHC does not generate
HasField instances for those).
- 'HasField' is a custom 'TyCon', not actually the built-in
'HasField' typeclass from 'GHC.Records'.
On the way, we slightly refactor the mechanisms for import suggestions
in GHC.Rename.Unbound. This is to account for the fact that, for
'HasField', we don't care whether the field is imported qualified or
unqualified. 'importSuggestions' was refactored, we now have
'sameQualImportSuggestions' and 'anyQualImportSuggestions'.
Fixes #18776 #22382 #26480
- - - - -
99d5707f by sheaf at 2025-10-26T18:23:52-04:00
Rename PatSyn MatchContext to PatSynCtx to avoid punning
- - - - -
5dc2e9ea by Julian Ospald at 2025-10-27T18:17:23-04:00
Skip uniques test if sources are not available
- - - - -
544b9ec9 by Vladislav Zavialov at 2025-10-27T18:18:06-04:00
Re-export GHC.Hs.Basic from GHC.Hs
Clean up some import sections in GHC by re-exporting GHC.Hs.Basic
from GHC.Hs.
- - - - -
643ce801 by Julian Ospald at 2025-10-28T18:18:55-04:00
rts: remove unneccesary cabal flags
We perform those checks via proper autoconf macros
instead that do the right thing and then add those
libs to the rts buildinfo.
- - - - -
d69ea8fe by Vladislav Zavialov at 2025-10-28T18:19:37-04:00
Test case for #17705
Starting with GHC 9.12 (the first release to include 5745dbd3),
all examples in this ticket are handled as expected.
- - - - -
4038a28b by Andreas Klebinger at 2025-10-30T12:38:52-04:00
Add a perf test for #26425
- - - - -
f997618e by Andreas Klebinger at 2025-10-30T12:38:52-04:00
OccAnal: Be stricter for better compiler perf.
In particular we are now stricter:
* When combining usageDetails.
* When computing binder info.
In combineUsageDetails when combining the underlying adds we compute a
new `LocalOcc` for each entry by combining the two existing ones.
Rather than wait for those entries to be forced down the road we now
force them immediately. Speeding up T26425 by about 10% with little
effect on the common case.
We also force binders we put into the Core AST everywhere now.
Failure to do so risks leaking the occ env used to set the binders
OccInfo.
For T26425 compiler residency went down by a factor of ~10x.
Compile time also improved by a factor of ~1.6.
-------------------------
Metric Decrease:
T18698a
T26425
T9233
-------------------------
- - - - -
5618645b by Vladislav Zavialov at 2025-10-30T12:39:33-04:00
Fix namespace specifiers in subordinate exports (#12488)
This patch fixes an oversight in the `lookupChildrenExport` function that
caused explicit namespace specifiers of subordinate export items to be
ignored:
module M (T (type A)) where -- should be rejected
data T = A
Based on the `IEWrappedName` data type, there are 5 cases to consider:
1. Unadorned name: P(X)
2. Named default: P(default X)
3. Pattern synonym: P(pattern X)
4. Type name: P(type X)
5. Data name: P(data X)
Case 1 is already handled correctly; cases 2 and 3 are parse errors; and
it is cases 4 and 5 that we are concerned with in this patch.
Following the precedent established in `LookupExactName`, we introduce
a boolean flag in `LookupChildren` to control whether to look up in all
namespaces or in a specific one. If an export item is accompanied by an
explicit namespace specifier `type` or `data`, we restrict the lookup in
`lookupGRE` to a specific namespace.
The newly introduced diagnostic `TcRnExportedSubordinateNotFound`
provides error messages and suggestions more tailored to this context
than the previously used `reportUnboundName`.
- - - - -
f75ab223 by Peter Trommler at 2025-10-31T18:43:13-04:00
ghc-toolchain: detect PowerPC 64 bit ABI
Check preprocessor macro defined for ABI v2 and assume v1 otherwise.
Fixes #26521
- - - - -
d086c474 by Peter Trommler at 2025-10-31T18:43:13-04:00
ghc-toolchain: refactor, move lastLine to Utils
- - - - -
995dfe0d by Vladislav Zavialov at 2025-10-31T18:43:54-04:00
Tests for -Wduplicate-exports, -Wdodgy-exports
Add test cases for the previously untested diagnostics:
[GHC-51876] TcRnDupeModuleExport
[GHC-64649] TcRnNullExportedModule
This also revealed a typo (incorrect capitalization of "module") in the
warning text for TcRnDupeModuleExport, which is now fixed.
- - - - -
f6961b02 by Cheng Shao at 2025-11-01T00:08:01+01:00
wasm: reformat dyld source code
This commit reformats dyld source code with prettier, to avoid
introducing unnecessary diffs in subsequent patches when they're
formatted before committing.
- - - - -
0c9032a0 by Cheng Shao at 2025-11-01T00:08:01+01:00
wasm: simplify _initialize logic in dyld
This commit simplifies how we _initialize a wasm shared library in
dyld and removes special treatment for libc.so, see added comment for
detailed explanation.
- - - - -
ec1b40bd by Cheng Shao at 2025-11-01T00:08:01+01:00
wasm: support running dyld fully client side in the browser
This commit refactors the wasm dyld script so that it can be used to
load and run wasm shared libraries fully client-side in the browser
without needing a wasm32-wasi-ghci backend:
- A new `DyLDBrowserHost` class is exported, which runs in the browser
and uses the in-memory vfs without any RPC calls. This meant to be
used to create a `rpc` object for the fully client side use cases.
- The exported `main` function now can be used to load user-specified
shared libraries, and the user can use the returned `DyLD` instance
to run their own exported Haskell functions.
- The in-browser wasi implementation is switched to
https://github.com/haskell-wasm/browser_wasi_shim for bugfixes and
major performance improvements not landed upstream yet.
- When being run by deno, it now correctly switches to non-nodejs code
paths, so it's more convenient to test dyld logic with deno.
See added comments for details, as well as the added `playground001`
test case for an example of using it to build an in-browser Haskell
playground.
- - - - -
8f3e481f by Cheng Shao at 2025-11-01T00:08:01+01:00
testsuite: add playground001 to test haskell playground
This commit adds the playground001 test case to test the haskell
playground in browser, see comments for details.
- - - - -
af40606a by Cheng Shao at 2025-11-01T00:08:04+01:00
Revert "testsuite: add T26431 test case"
This reverts commit 695036686f8c6d78611edf3ed627608d94def6b7. T26431
is now retired, wasm ghc internal-interpreter logic is tested by
playground001.
- - - - -
86c82745 by Vladislav Zavialov at 2025-11-01T07:24:29-04:00
Supplant TcRnExportHiddenComponents with TcRnDodgyExports (#26534)
Remove a bogus special case in lookup_ie_kids_all,
making TcRnExportHiddenComponents obsolete.
- - - - -
fcf6331e by Richard Eisenberg at 2025-11-03T08:33:05+00:00
Refactor fundep solving
This commit is a large-scale refactor of the increasingly-messy code that
handles functional dependencies. It has virtually no effect on what compiles
but improves error messages a bit. And it does the groundwork for #23162.
The big picture is described in
Note [Overview of functional dependencies in type inference]
in GHC.Tc.Solver.FunDeps
* New module GHC.Tc.Solver.FunDeps contains all the fundep-handling
code for the constraint solver.
* Fundep-equalities are solved in a nested scope; they may generate
unifications but otherwise have no other effect.
See GHC.Tc.Solver.FunDeps.solveFunDeps
The nested needs to start from the Givens in the inert set, but
not the Wanteds; hence a new function `resetInertCans`, used in
`nestFunDepsTcS`.
* That in turn means that fundep equalities never show up in error
messages, so the complicated FunDepOrigin tracking can all disappear.
* We need to be careful about tracking unifications, so we kick out
constraints from the inert set after doing unifications. Unification
tracking has been majorly reformed: see Note [WhatUnifications] in
GHC.Tc.Utils.Unify.
A good consequence is that the hard-to-grok `resetUnificationFlag`
has been replaced with a simpler use of
`reportCoarseGrainUnifications`
Smaller things:
* Rename `FunDepEqn` to `FunDepEqns` since it contains multiple
type equalities.
Some compile time improvement
Metrics: compile_time/bytes allocated
Baseline
Test value New value Change
---------------------- --------------------------------------
T5030(normal) 173,839,232 148,115,248 -14.8% GOOD
hard_hole_fits(normal) 286,768,048 284,015,416 -1.0%
geo. mean -0.2%
minimum -14.8%
maximum +0.3%
Metric Decrease:
T5030
- - - - -
231adc30 by Simon Peyton Jones at 2025-11-03T08:33:05+00:00
QuickLook's tcInstFun should make instantiation variables directly
tcInstFun must make "instantiation variables", not regular
unification variables, when instantiating function types. That was
previously implemented by a hack: set the /ambient/ level to QLInstTyVar.
But the hack finally bit me, when I was refactoring WhatUnifications.
And it was always wrong: see the now-expunged (TCAPP2) note.
This commit does it right, by making tcInstFun call its own
instantiation functions. That entails a small bit of duplication,
but the result is much, much cleaner.
- - - - -
39d4a24b by Simon Peyton Jones at 2025-11-03T08:33:05+00:00
Build implication for constraints from (static e)
This commit addresses #26466, by buiding an implication for the
constraints arising from a (static e) form. The implication has
a special ic_info field of StaticFormSkol, which tells the constraint
solver to use an empty set of Givens.
See (SF3) in Note [Grand plan for static forms]
in GHC.Iface.Tidy.StaticPtrTable
This commit also reinstates an `assert` in GHC.Tc.Solver.Equality.
The test `StaticPtrTypeFamily` was failing with an assertion failure,
but it now works.
- - - - -
2e2aec1e by Simon Peyton Jones at 2025-11-03T08:33:05+00:00
Comments about defaulting representation equalities
- - - - -
52a4d1da by Simon Peyton Jones at 2025-11-03T08:33:05+00:00
Improve tracking of rewriter-sets
This refactor substantially improves the treatment of so-called
"rewriter-sets" in the constraint solver.
The story is described in the rewritten
Note [Wanteds rewrite Wanteds: rewriter-sets]
in GHC.Tc.Types.Constraint
Some highlights
* Trace the free coercion holes of a filled CoercionHole,
in CoercionPlusHoles. See Note [Coercion holes] (COH5)
This avoids taking having to take the free coercion variables
of a coercion when zonking a rewrriter-set
* Many knock on changes
* Make fillCoercionHole take CoercionPlusHoles as its argument
rather than to separate arguments.
* Similarly setEqIfWanted, setWantedE, wrapUnifierAndEmit.
* Be more careful about passing the correct CoHoleSet to
`rewriteEqEvidence` and friends
* Make kickOurAfterFillingCoercionHole more clever. See
new Note [Kick out after filling a coercion hole]
Smaller matters
* Rename RewriterSet to CoHoleSet
* Add special-case helper `rewriteEqEvidenceSwapOnly`
- - - - -
3e78e1ba by Simon Peyton Jones at 2025-11-03T08:33:05+00:00
Tidy up constraint solving for foralls
* In `can_eq_nc_forall` make sure to track Givens that are used
in the nested solve step.
* Tiny missing-swap bug-fix in `lookup_eq_in_qcis`
* Fix some leftover mess from
commit 14123ee646f2b9738a917b7cec30f9d3941c13de
Author: Simon Peyton Jones <simon.peytonjones(a)gmail.com>
Date: Wed Aug 20 00:35:48 2025 +0100
Solve forall-constraints via an implication, again
Specifically, trySolveImplication is now dead.
- - - - -
973f2c25 by Simon Peyton Jones at 2025-11-03T08:33:05+00:00
Do not treat CoercionHoles as free variables in coercions
This fixes a long-standing wart in the free-variable finder;
now CoercionHoles are no longer treated as a "free variable"
of a coercion.
I got big and unexpected performance regressions when making
this change. Turned out that CallArity didn't discover that
the free variable finder could be eta-expanded, which gave very
poor code.
So I re-used Note [The one-shot state monad trick] for Endo,
resulting in GHC.Utils.EndoOS. Very simple, big win.
- - - - -
c2b8a0f9 by Simon Peyton Jones at 2025-11-03T08:33:05+00:00
Update debug-tracing in CallArity
No effect on behaviour, and commented out anyway
- - - - -
9aa5ee99 by Simon Peyton Jones at 2025-11-03T08:33:28+00:00
Comments only -- remove dangling Note references
- - - - -
6683f183 by Simon Peyton Jones at 2025-11-03T08:33:28+00:00
Accept error message wibbles
- - - - -
3ba3d9f9 by Luite Stegeman at 2025-11-04T00:59:41-05:00
rts: fix eager black holes: record mutated closure and fix assertion
This fixes two problems with handling eager black holes, introduced
by a1de535f762bc23d4cf23a5b1853591dda12cdc9.
- the closure mutation must be recorded even for eager black holes,
since the mutator has mutated it before calling threadPaused
- The assertion that an unmarked eager black hole must be owned by
the TSO calling threadPaused is incorrect, since multiple threads
can race to claim the black hole.
fixes #26495
- - - - -
b5508f2c by Rodrigo Mesquita at 2025-11-04T14:10:56+00:00
build: Relax ghc/ghc-boot Cabal bound to 3.16
Fixes #26202
- - - - -
c5b3541f by Rodrigo Mesquita at 2025-11-04T14:10:56+00:00
cabal-reinstall: Use haddock-api +in-tree-ghc
Fixes #26202
- - - - -
c6d4b945 by Rodrigo Mesquita at 2025-11-04T14:10:56+00:00
cabal-reinstall: Pass --strict to Happy
This is necessary to make the generated Parser build successfully
This mimics Hadrian, which always passes --strict to happy.
Fixes #26202
- - - - -
79df1e0e by Rodrigo Mesquita at 2025-11-04T14:10:56+00:00
genprimopcode: Require higher happy version
I've bumped the happy version to forbid deprecated Happy versions which
don't successfully compile.
- - - - -
fa5d33de by Simon Peyton Jones at 2025-11-05T08:35:40-05:00
Add a HsWrapper optimiser
This MR addresses #26349, by introduceing optSubTypeHsWrapper.
There is a long
Note [Deep subsumption and WpSubType]
in GHC.Tc.Types.Evidence that explains what is going on.
- - - - -
ea58cae5 by Simon Peyton Jones at 2025-11-05T08:35:40-05:00
Improve mkWpFun_FRR
This commit ensures that `mkWpFun_FRR` directly produces a `FunCo` in
the cases where it can.
(Previously called `mkWpFun` which in turn optimised to a `FunCo`, but
that made the smarts in `mkWpFun` /essential/ rather than (as they
should be) optional.
- - - - -
5cdcfaed by Ben Gamari at 2025-11-06T09:01:36-05:00
compiler: Exclude units with no exposed modules from unused package check
Such packages cannot be "used" in the Haskell sense of the word yet
are nevertheless necessary as they may provide, e.g., C object code or
link flags.
Fixes #24120.
- - - - -
74b8397a by Brandon Chinn at 2025-11-06T09:02:19-05:00
Replace deprecated argparse.FileType
- - - - -
36ddf988 by Ben Gamari at 2025-11-06T09:03:01-05:00
Bump unix submodule to 2.8.8.0
Closes #26474.
- - - - -
c32b3a29 by fendor at 2025-11-06T09:03:43-05:00
Fix assertion in `postStringLen` to account for \0 byte
We fix the assertion to handle trailing \0 bytes in `postStringLen`.
Before this change, the assertion looked like this:
ASSERT(eb->begin + eb->size > eb->pos + len + 1);
Let's assume some values to see why this is actually off by one:
eb->begin = 0
eb->size = 1
eb->pos = 0
len = 1
then the assertion would trigger correctly:
0 + 1 > 0 + 1 + 1 => 1 > 2 => false
as there is not enough space for the \0 byte (which is the trailing +1).
However, if we change `eb->size = 2`, then we do have enough space for a
string of length 1, but the assertion still fails:
0 + 2 > 0 + 1 + 1 => 2 > 2 => false
Which causes the assertion to fail if there is exactly enough space for
the string with a trailing \0 byte.
Clearly, the assertion should be `>=`!
If we switch around the operand, it should become more obvious that `<=`
is the correct comparison:
ASSERT(eb->pos + len + 1 <= eb->begin + eb->size);
This is expresses more naturally that the current position plus the
length of the string (and the null byte) must be smaller or equal to the
overall size of the buffer.
This change also is in line with the implementation in
`hasRoomForEvent` and `hasRoomForVariableEvent`:
```
StgBool hasRoomForEvent(EventsBuf *eb, EventTypeNum eNum)
{
uint32_t size = ...;
if (eb->pos + size > eb->begin + eb->size)
...
```
the check `eb->pos + size > eb->begin + eb->size` is identical to
`eb->pos + size <= eb->begin + eb->size` plus a negation.
- - - - -
3034a6f2 by Ben Gamari at 2025-11-06T09:04:24-05:00
Bump os-string submodule to 2.0.8
- - - - -
39567e85 by Cheng Shao at 2025-11-06T09:05:06-05:00
rts: use computed goto for instruction dispatch in the bytecode interpreter
This patch uses computed goto for instruction dispatch in the bytecode
interpreter. Previously instruction dispatch is done by a classic
switch loop, so executing the next instruction requires two jumps: one
to the start of the switch loop and another to the case block based on
the instruction tag. By using computed goto, we can build a jump table
consisted of code addresses indexed by the instruction tags
themselves, so executing the next instruction requires only one jump,
to the destination directly fetched from the jump table.
Closes #12953.
- - - - -
93fc7265 by sheaf at 2025-11-06T21:33:24-05:00
Correct hasFixedRuntimeRep in matchExpectedFunTys
This commit fixes a bug in the representation-polymormorphism check in
GHC.Tc.Utils.Unify.matchExpectedFunTys. The problem was that we put
the coercion resulting from hasFixedRuntimeRep in the wrong place,
leading to the Core Lint error reported in #26528.
The change is that we have to be careful when using 'mkWpFun': it
expects **both** the expected and actual argument types to have a
syntactically fixed RuntimeRep, as explained in Note [WpFun-FRR-INVARIANT]
in GHC.Tc.Types.Evidence.
On the way, this patch improves some of the commentary relating to
other usages of 'mkWpFun' in the compiler, in particular in the view
pattern case of 'tc_pat'. No functional changes, but some stylistic
changes to make the code more readable, and make it easier to understand
how we are upholding the WpFun-FRR-INVARIANT.
Fixes #26528
- - - - -
c052c724 by Simon Peyton Jones at 2025-11-06T21:34:06-05:00
Fix a horrible shadowing bug in implicit parameters
Fixes #26451. The change is in GHC.Tc.Solver.Monad.updInertDicts
where we now do /not/ delete /Wanted/ implicit-parameeter constraints.
This bug has been in GHC since 9.8! But it's quite hard to provoke;
I contructed a tests in T26451, but it was hard to do so.
- - - - -
b253013e by Georgios Karachalias at 2025-11-07T17:21:57-05:00
Remove the `CoreBindings` constructor from `LinkablePart`
Adjust HscRecompStatus to disallow unhydrated WholeCoreBindings
from being passed as input to getLinkDeps (which would previously
panic in this case).
Fixes #26497
- - - - -
ac7b737e by Sylvain Henry at 2025-11-07T17:22:51-05:00
Testsuite: pass ext-interp test way (#26552)
Note that some tests are still marked as broken with the ext-interp way
(see #26552 and #14335)
- - - - -
3c2f4bb4 by sheaf at 2025-11-11T11:47:28-05:00
Preserve user-written kinds in data declarations
This commit ensures that we preserve the user-written kind for data
declarations, e.g. in
type T2T = Type -> Type
type D :: T2T
data D a where { .. }
that we preserve the user-written kind of D as 'T2T', instead of
expanding the type synonym 'T2T' during kind checking.
We do this by storing 'tyConKind' separately from 'tyConResKind'. This
means that 'tyConKind' is not necessarily equal to
'mkTyConKind binders res_kind', as e.g. in the above example the former
is 'T2T' while the latter is 'Type -> Type'.
This is explained in Note [Preserve user-written TyCon kind] in GHC.Core.TyCon.
This is particularly important for Haddock, as the kinds stored in
interface files affect the generated documentation, and we want to
preserve the user-written types as much as possible.
- - - - -
19859584 by sheaf at 2025-11-11T11:47:28-05:00
Store user-written datacon tvs in interface files
This commit ensures we store the user-written quantified type variables
of data constructors in interface files, e.g. in
data D a where
MkD1 :: forall x. x -> D x
MkD2 :: forall u v. u -> v -> D v
The previous behaviour was to rename the universal variables to match
the universal variables of the data constructor. This was undesirable
because the names that end up in interface files end up mattering for
generated Haddock documentation; it's better to preserve the user-written
type variables.
Moreover, the universal variables may not have been user-written at all,
e.g. in an example such as:
type T2T = Type -> Type
data G :: T2T where
MkG :: forall x. D x
Here GHC will invent the type variable name 'a' for the first binder of
the TyCon G. We really don't want to then rename the user-written 'x'
into the generated 'a'.
- - - - -
034b2056 by sheaf at 2025-11-11T11:47:28-05:00
DataCon univ_tvs names: pick TyCon over inferred
This commit changes how we compute the names of universal type variables
in GADT data constructors. This augments the existing logic that chose
which type variable name to use, in GHC.Tc.TyCl.mkGADTVars. We continue
to prefer DataCon tv names for user-written binders, but we now prefer
TyCon tv names for inferred (non-user-written) DataCon binders.
This makes a difference in examples such as:
type (:~~:) :: k1 -> k2 -> Type
data a :~~: b where
HRefl :: a :~~: a
Before this patch, we ended up giving HRefl the type:
forall {k2}. forall (a :: k2). a :~~: a
whereas we now give it the type:
forall {k1}. forall (a :: k1). a :~~: a
The important part isn't really 'k1' or 'k2', but more that the inferred
type variable names of the DataCon can be arbitrary/unpredictable (as
they are chosen by GHC and depend on how unification proceeds), so it's
much better to use the more predictable TyCon type variable names.
- - - - -
95078d00 by sheaf at 2025-11-11T11:47:28-05:00
Backpack Rename: use explicit record construction
This commit updates the Backpack boilerplate in GHC.Iface.Rename to
use explicit record construction rather than record update. This makes
sure that the code stays up to date when the underlying constructors
change (e.g. new fields are added). The rationale is further explained
in Note [Prefer explicit record construction].
- - - - -
2bf36263 by sheaf at 2025-11-11T11:47:28-05:00
Store # eta binders in TyCon and use for Haddock
This commit stores the number of TyCon binders that were introduced by
eta-expansion (by the function GHC.Tc.Gen.HsType.splitTyConKind).
This is then used to pretty-print the TyCon as the user wrote it, e.g.
for
type Effect :: (Type -> Type) -> Type -> Type
data State s :: Effect where {..} -- arity 3
GHC will eta-expand the data declaration to
data State s a b where {..}
but also store in the 'TyCon' that the number of binders introduced by
this eta expansion is 2. This allows us, in
'Haddock.Convert.synifyTyConKindSig', to recover the original user-written
syntax, preserving the user's intent in Haddock documentation.
See Note [Inline kind signatures with GADTSyntax] in Haddock.Convert.
- - - - -
6c91582f by Matthew Pickering at 2025-11-11T11:48:12-05:00
driver: Properly handle errors during LinkNode steps
Previously we were not properly catching errors during the LinkNode step
(see T9930fail test).
This is fixed by wrapping the `LinkNode` action in `wrapAction`, the
same handler which is used for module compilation.
Fixes #26496
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e1e1eb32 by Matthew Pickering at 2025-11-11T11:48:54-05:00
driver: Remove unecessary call to hscInsertHPT
This call was left-over from e9445c013fbccf9318739ca3d095a3e0a2e1be8a
If you follow the functions which call `upsweep_mod`, they immediately
add the interface to the HomePackageTable when `upsweep_mod` returns.
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b22777d4 by ARATA Mizuki at 2025-11-11T11:49:44-05:00
LLVM backend: Pass the +evex512 attribute to LLVM 18+ if -mavx512f is set
The newer LLVM requires the +evex512 attribute to enable use of ZMM registers.
LLVM exhibits a backward-compatible behavior if the cpu is `x86-64`, but not if `penryn`.
Therefore, on macOS, where the cpu is set to `penryn`, we need to explicitly pass +evex512.
Fixes #26410
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6ead7d06 by Vladislav Zavialov at 2025-11-11T11:50:26-05:00
Comments only in GHC.Parser.PostProcess.Haddock
Remove outdated Note [Register keyword location], as the issue it describes
was addressed by commit 05eb50dff2fcc78d025e77b9418ddb369db49b9f.
- - - - -
43fa8be8 by sheaf at 2025-11-11T11:51:18-05:00
localRegistersConflict: account for assignment LHS
This commit fixes a serious oversight in GHC.Cmm.Sink.conflicts,
specifically the code that computes which local registers conflict
between an assignment and a Cmm statement.
If we have:
assignment: <local_reg> = <expr>
node: <local_reg> = <other_expr>
then clearly the two conflict, because we cannot move one statement past
the other, as they assign two different values to the same local
register. (Recall that 'conflicts (local_reg,expr) node' is False if and
only if the assignment 'local_reg = expr' can be safely commuted past
the statement 'node'.)
The fix is to update 'GHC.Cmm.Sink.localRegistersConflict' to take into
account the following two situations:
(1) 'node' defines the LHS local register of the assignment,
(2) 'node' defines a local register used in the RHS of the assignment.
The bug is precisely that we were previously missing condition (1).
Fixes #26550
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79dfcfe0 by sheaf at 2025-11-11T11:51:18-05:00
Update assigned register format when spilling
When we come to spilling a register to put new data into it, in
GHC.CmmToAsm.Reg.Linear.allocRegsAndSpill_spill, we need to:
1. Spill the data currently in the register. That is, do a spill
with a format that matches what's currently in the register.
2. Update the register assignment, allocating a virtual register to
this real register, but crucially **updating the format** of this
assignment.
Due to shadowing in the Haskell code for allocRegsAndSpill_spill, we
were mistakenly re-using the old format. This could lead to a situation
where:
a. We were using xmm6 to store a Double#.
b. We want to store a DoubleX2# into xmm6, so we spill the current
content of xmm6 to the stack using a scalar move (correct).
c. We update the register assignment, but we fail to update the format
of the assignment, so we continue to think that xmm6 stores a
Double# and not a DoubleX2#.
d. Later on, we need to spill xmm6 because it is getting clobbered by
another instruction. We then decide to only spill the lower 64 bits
of the register, because we still think that xmm6 only stores a
Double# and not a DoubleX2#.
Fixes #26542
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aada5db9 by ARATA Mizuki at 2025-11-11T11:52:07-05:00
Fix the order of spill/reload instructions
The AArch64 NCG could emit multiple instructions for a single spill/reload,
but their order was not consistent between the definition and a use.
Fixes #26537
Co-authored-by: sheaf <sam.derbyshire(a)gmail.com>
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64ec82ff by Andreas Klebinger at 2025-11-11T11:52:48-05:00
Add hpc to release script
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741da00c by Ben Gamari at 2025-11-12T03:38:20-05:00
template-haskell: Better describe getQ semantics
Clarify that the state is a type-indexed map, as suggested by #26484.
- - - - -
8b080e04 by ARATA Mizuki at 2025-11-12T03:39:11-05:00
Fix incorrect markups in the User's Guide
* Correct markup for C--: "C-\-" in reST
* Fix internal links
* Fix code highlighting
* Fix inline code: Use ``code`` rather than `code`
* Remove extra backslashes
Fixes #16812
Co-authored-by: sheaf <sam.derbyshire(a)gmail.com>
- - - - -
a00840ea by Simon Peyton Jones at 2025-11-14T15:23:56+00:00
Make TYPE and CONSTRAINT apart again
This patch finally fixes #24279.
* The story started with #11715
* Then #21623 articulated a plan, which made Type and Constraint
not-apart; a horrible hack but it worked. The main patch was
commit 778c6adca2c995cd8a1b84394d4d5ca26b915dac
Author: Simon Peyton Jones <simonpj(a)microsoft.com>
Date: Wed Nov 9 10:33:22 2022 +0000
Type vs Constraint: finally nailed
* #24279 reported a bug in the above big commit; this small patch fixes it
commit af6932d6c068361c6ae300d52e72fbe13f8e1f18
Author: Simon Peyton Jones <simon.peytonjones(a)gmail.com>
Date: Mon Jan 8 10:49:49 2024 +0000
Make TYPE and CONSTRAINT not-apart
Issue #24279 showed up a bug in the logic in GHC.Core.Unify.unify_ty
which is supposed to make TYPE and CONSTRAINT be not-apart.
* Then !10479 implemented "unary classes".
* That change in turn allows us to make Type and Constraint apart again,
cleaning up the compiler and allowing a little bit more expressiveness.
It fixes the original hope in #24279, namely that `Type` and `Constraint`
should be distinct throughout.
- - - - -
c0a1e574 by Georgios Karachalias at 2025-11-15T05:14:31-05:00
Report all missing modules with -M
We now report all missing modules at once in GHC.Driver.Makefile.processDeps,
as opposed to only reporting a single missing module. Fixes #26551.
- - - - -
c9fa3449 by Sylvain Henry at 2025-11-15T05:15:26-05:00
JS: fix array index for registers
We used to store R32 in h$regs[-1]. While it's correct in JavaScript,
fix this to store R32 in h$regs[0] instead.
- - - - -
9e469909 by Sylvain Henry at 2025-11-15T05:15:26-05:00
JS: support more than 128 registers (#26558)
The JS backend only supported 128 registers (JS variables/array slots
used to pass function arguments). It failed in T26537 when 129
registers were required.
This commit adds support for more than 128 registers: it is now limited to
maxBound :: Int (compiler's Int). If we ever go above this threshold the
compiler now panics with a more descriptive message.
A few built-in JS functions were assuming 128 registers and have been
rewritten to use loops. Note that loops are only used for "high"
registers that are stored in an array: the 31 "low" registers are still
handled with JS global variables and with explicit switch-cases to
maintain good performance in the most common cases (i.e. few registers
used). Adjusting the number of low registers is now easy: just one
constant to adjust (GHC.StgToJS.Regs.lowRegsCount).
No new test added: T26537 is used as a regression test instead.
- - - - -
0a64a78b by Sven Tennie at 2025-11-15T20:31:10-05:00
AArch64: Simplify CmmAssign and CmmStore
The special handling for floats was fake: The general case is always
used. So, the additional code path isn't needed (and only adds
complexity for the reader.)
- - - - -
15b311be by sheaf at 2025-11-15T20:32:02-05:00
SimpleOpt: refactor & push coercions into lambdas
This commit improves the simple optimiser (in GHC.Core.SimpleOpt)
in a couple of ways:
- The logic to push coercion lambdas is shored up.
The function 'pushCoercionIntoLambda' used to be called in 'finish_app',
but this meant we could not continue to optimise the program after
performing this transformation.
Now, we call 'pushCoercionIntoLambda' as part of 'simple_app'.
Doing so can be important when dealing with unlifted newtypes,
as explained in Note [Desugaring unlifted newtypes].
- The code is re-structured to avoid duplication and out-of-sync
code paths.
Now, 'simple_opt_expr' defers to 'simple_app' for the 'App', 'Var',
'Cast' and 'Lam' cases. This means all the logic for those is
centralised in a single place (e.g. the 'go_lam' helper function).
To do this, the general structure is brought a bit closer to the
full-blown simplifier, with a notion of 'continuation'
(see 'SimpleContItem').
This commit also modifies GHC.Core.Opt.Arity.pushCoercionIntoLambda to
apply a substitution (a slight generalisation of its existing implementation).
- - - - -
b33284c7 by sheaf at 2025-11-15T20:32:02-05:00
Improve typechecking of data constructors
This commit changes the way in which we perform typecheck data
constructors, in particular how we make multiplicities line up.
Now, impedance matching occurs as part of the existing subsumption
machinery. See the revamped Note [Typechecking data constructors] in
GHC.Tc.Gen.App, as well as Note [Polymorphisation of linear fields]
in GHC.Core.Multiplicity.
This allows us to get rid of a fair amount of hacky code that was
added with the introduction of LinearTypes; in particular the logic of
GHC.Tc.Gen.Head.tcInferDataCon.
-------------------------
Metric Decrease:
T10421
T14766
T15164
T15703
T19695
T5642
T9630
WWRec
-------------------------
- - - - -
b6faf5d0 by sheaf at 2025-11-15T20:32:02-05:00
Handle unsaturated rep-poly newtypes
This commit allows GHC to handle unsaturated occurrences of unlifted
newtype constructors. The plan is detailed in
Note [Eta-expanding rep-poly unlifted newtypes]
in GHC.Tc.Utils.Concrete: for unsaturated unlifted newtypes, we perform
the appropriate representation-polymorphism check in tcInstFun.
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682bf979 by Mike Pilgrem at 2025-11-16T16:44:14+00:00
Fix #26293 Valid stack.yaml for hadrian
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acc70c3a by Simon Peyton Jones at 2025-11-18T16:21:20-05:00
Fix a bug in defaulting
Addresses #26582
Defaulting was doing some unification but then failing to
iterate. Silly.
I discovered that the main solver was unnecessarily iterating even
if there was a unification for an /outer/ unification variable, so
I fixed that too.
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c12fa73e by Simon Peyton Jones at 2025-11-19T02:55:01-05:00
Make PmLit be in Ord, and use it in Map
This MR addresses #26514, by changing from
data PmAltConSet = PACS !(UniqDSet ConLike) ![PmLit]
to
data PmAltConSet = PACS !(UniqDSet ConLike) !(Map PmLit PmLit)
This matters when doing pattern-match overlap checking, when there
is a very large set of patterns. For most programs it makes
no difference at all.
For the N=5000 case of the repro case in #26514, compiler
mutator time (with `-fno-code`) goes from 1.9s to 0.43s.
All for the price for an Ord instance for PmLit
- - - - -
41b84f40 by sheaf at 2025-11-19T02:55:52-05:00
Add passing tests for #26311 and #26072
This commit adds two tests cases that now pass since landing the changes
to typechecking of data constructors in b33284c7.
Fixes #26072 #26311
- - - - -
1faa758a by sheaf at 2025-11-19T02:55:52-05:00
mkCast: weaken bad cast warning for multiplicity
This commit weakens the warning message emitted when constructing a bad
cast in mkCast to ignore multiplicity.
Justification: since b33284c7, GHC uses sub-multiplicity coercions to
typecheck data constructors. The coercion optimiser is free to discard
these coercions, both for performance reasons, and because GHC's Core
simplifier does not (yet) preserve linearity.
We thus weaken 'mkCast' to use 'eqTypeIgnoringMultiplicity' instead of
'eqType', to avoid getting many spurious warnings about mismatched
multiplicities.
- - - - -
55eab80d by Sylvain Henry at 2025-11-20T17:33:13-05:00
Build external interpreter program on demand (#24731)
This patch teaches GHC how to build the external interpreter program
when it is missing. As long as we have the `ghci` library, doing this is
trivial so most of this patch is refactoring for doing it sanely.
- - - - -
08bbc028 by Rodrigo Mesquita at 2025-11-20T17:33:54-05:00
Add tests for #23973 and #26565
These were fixed by 4af4f0f070f83f948e49ad5d7835fd91b8d3f0e6 in !10417
- - - - -
6b42232c by sheaf at 2025-11-20T17:34:35-05:00
Mark T26410_ffi as fragile on Windows
As seen in #26595, this test intermittently fails on Windows.
This commit marks it as fragile, until we get around to fixing it.
- - - - -
b7b7c049 by Andrew Lelechenko at 2025-11-21T21:04:01+00:00
Add nubOrd / nubOrdBy to Data.List and Data.List.NonEmpty
As per https://github.com/haskell/core-libraries-committee/issues/336
- - - - -
352d5462 by Marc Scholten at 2025-11-22T10:33:03-05:00
Fix haddock test runner to handle UTF-8 output
xhtml 3000.4.0.0 now produces UTF-8 output instead of escaping non-ASCII characters.
When using --test-accept it previously wrote files in the wrong encoding
because they have not been decoded properly when reading the files.
- - - - -
48a3ed57 by Simon Peyton Jones at 2025-11-25T15:33:54+00:00
Add a fast-path for args=[] to occAnalApp
In the common case of having not arguments, occAnalApp
was doing redundant work.
- - - - -
951e5ed9 by Simon Peyton Jones at 2025-11-25T15:33:54+00:00
Fix a performance hole in the occurrence analyser
As #26425 showed, the clever stuff in
Note [Occurrence analysis for join points]
does a lot of duplication of usage details. This patch
improved matters with a little fancy footwork. It is
described in the new (W4) of the same Note.
Compile-time allocations go down slightly. Here are the changes
of +/- 0.5% or more:
T13253(normal) 329,369,244 326,395,544 -0.9%
T13253-spj(normal) 66,410,496 66,095,864 -0.5%
T15630(normal) 129,797,200 128,663,136 -0.9%
T15630a(normal) 129,212,408 128,027,560 -0.9%
T16577(normal) 6,756,706,896 6,723,028,512 -0.5%
T18282(normal) 128,462,070 125,808,584 -2.1% GOOD
T18698a(normal) 208,418,305 202,037,336 -3.1% GOOD
T18730(optasm) 136,981,756 136,208,136 -0.6%
T18923(normal) 58,103,088 57,745,840 -0.6%
T19695(normal) 1,386,306,272 1,365,609,416 -1.5%
T26425(normal) 3,344,402,957 2,457,811,664 -26.5% GOOD
T6048(optasm) 79,763,816 79,212,760 -0.7%
T9020(optasm) 225,278,408 223,682,440 -0.7%
T9961(normal) 303,810,717 300,729,168 -1.0% GOOD
geo. mean -0.5%
minimum -26.5%
maximum +0.4%
Metric Decrease:
T18282
T18698a
T26425
T9961
- - - - -
f1959dfc by Simon Peyton Jones at 2025-11-26T11:58:07+00:00
Remove a quadratic-cost assertion check in mkCoreApp
See the new Note [Assertion checking in mkCoreApp]
- - - - -
98fa0d36 by Simon Hengel at 2025-11-27T17:54:57-05:00
Fix typo in docs/users_guide/exts/type_families.rst
- - - - -
5b97e5ce by Simon Hengel at 2025-11-27T17:55:37-05:00
Fix broken RankNTypes example in user's guide
- - - - -
fa2aaa00 by Simon Peyton Jones at 2025-11-27T17:56:18-05:00
Switch off specialisation in ExactPrint
In !15057 (where we re-introduced -fpolymoprhic-specialisation) we found
that ExactPrint's compile time blew up by a factor of 5. It turned out
to be caused by bazillions of specialisations of `markAnnotated`.
Since ExactPrint isn't perf-critical, it does not seem worth taking
the performance hit, so this patch switches off specialisation in
this one module.
- - - - -
1fd25987 by Simon Peyton Jones at 2025-11-27T17:56:18-05:00
Switch -fpolymorphic-specialisation on by default
This patch addresses #23559.
Now that !10479 has landed and #26329 is fixed, we can switch on
polymorphic specialisation by default, addressing a bunch of other
tickets listed in #23559.
Metric changes:
* CoOpt_Singleton: +4% compiler allocations: we just get more
specialisations
* info_table_map_perf: -20% decrease in compiler allocations.
This is caused by using -fno-specialise in ExactPrint.hs
Without that change we get a 4x blow-up in compile time;
see !15058 for details
Metric Decrease:
info_table_map_perf
Metric Increase:
CoOpt_Singletons
- - - - -
b7fe7445 by Matthew Pickering at 2025-11-27T17:56:59-05:00
rts: Fix a deadlock with eventlog flush interval and RTS shutdown
The ghc_ticker thread attempts to flush at the eventlog tick interval, this requires
waiting to take all capabilities.
At the same time, the main thread is shutting down, the schedule is
stopped and then we wait for the ticker thread to finish.
Therefore we are deadlocked.
The solution is to use `newBoundTask/exitMyTask`, so that flushing can
cooperate with the scheduler shutdown.
Fixes #26573
- - - - -
1d4a1229 by sheaf at 2025-11-27T17:58:02-05:00
SimpleOpt: don't subst in pushCoercionIntoLambda
It was noticed in #26589 that the change in 15b311be was incorrect:
the simple optimiser carries two different substitution-like pieces of
information: 'soe_subst' (from InVar to OutExpr) and 'soe_inl'
(from InId to InExpr). It is thus incorrect to have 'pushCoercionIntoLambda'
apply the substitution from 'soe_subst' while discarding 'soe_inl'
entirely, which is what was done in 15b311be.
Instead, we change back pushCoercionIntoLambda to take an InScopeSet,
and optimise the lambda before calling 'pushCoercionIntoLambda' to avoid
mixing InExpr with OutExpr, or mixing two InExpr with different
environments. We can then call 'soeZapSubst' without problems.
Fixes #26588 #26589
- - - - -
84a087d5 by Sylvain Henry at 2025-11-28T17:35:28-05:00
Fix PIC jump tables on Windows (#24016)
Avoid overflows in jump tables by using a base label closer to the jump
targets. See added Note [Jump tables]
- - - - -
82db7042 by Zubin Duggal at 2025-11-28T17:36:10-05:00
rts/linker/PEi386: Copy strings before they are inserted into LoadedDllCache. The original strings are temporary and might be freed at an arbitrary point.
Fixes #26613
- - - - -
ff3f0d09 by Ben Gamari at 2025-11-29T18:34:28-05:00
gitlab-ci: Run ghcup-metadata jobs on OpenCape runners
This significantly reduces our egress traffic
and makes the jobs significantly faster.
- - - - -
ef0dc33b by Matthew Pickering at 2025-11-29T18:35:10-05:00
Use 'OsPath' in getModificationTimeIfExists
This part of the compiler is quite hot during recompilation checking in
particular since the filepaths will be translated to a string. It is
better to use the 'OsPath' native function, which turns out to be easy
to do.
- - - - -
fa3bd0a6 by Georgios Karachalias at 2025-11-29T18:36:05-05:00
Use OsPath in PkgDbRef and UnitDatabase, not FilePath
- - - - -
0d7c05ec by Ben Gamari at 2025-12-01T03:13:46-05:00
hadrian: Place user options after package arguments
This makes it easier for the user to override the default package
arguments with `UserSettings.hs`.
Fixes #25821.
-------------------------
Metric Decrease:
T14697
-------------------------
- - - - -
3b2c4598 by Vladislav Zavialov at 2025-12-01T03:14:29-05:00
Namespace-specified wildcards in import/export lists (#25901)
This change adds support for top-level namespace-specified wildcards
`type ..` and `data ..` to import and export lists.
Examples:
import M (type ..) -- imports all type and class constructors from M
import M (data ..) -- imports all data constructors and terms from M
module M (type .., f) where
-- exports all type and class constructors defined in M,
-- plus the function 'f'
The primary intended usage of this feature is in combination with module
aliases, allowing namespace disambiguation:
import Data.Proxy as T (type ..) -- T.Proxy is unambiguously the type constructor
import Data.Proxy as D (data ..) -- D.Proxy is unambiguously the data constructor
The patch accounts for the interactions of wildcards with:
* Imports with `hiding` clauses
* Import warnings -Wunused-imports, -Wdodgy-imports
* Export warnings -Wduplicate-exports, -Wdodgy-exports
Summary of the changes:
1. Move the NamespaceSpecifier type from GHC.Hs.Binds to GHC.Hs.Basic,
making it possible to use it in more places in the AST.
2. Extend the AST (type: IE) with a representation of `..`, `type ..`,
and `data ..` (constructor: IEWholeNamespace). Per the proposal, the
plain `..` is always rejected with a dedicated error message.
3. Extend the grammar in Parser.y with productions for `..`, `type ..`,
and `data ..` in both import and export lists.
4. Implement wildcard imports by updating the `filterImports` function
in GHC.Rename.Names; the logic for IEWholeNamespace is roughly
modeled after the Nothing (no explicit import list) case.
5. Implement wildcard exports by updating the `exports_from_avail`
function in GHC.Tc.Gen.Export; the logic for IEWholeNamespace is
closely modeled after the IEModuleContents case.
6. Refactor and extend diagnostics to report the new warnings and
errors. See PsErrPlainWildcardImport, DodgyImportsWildcard,
PsErrPlainWildcardExport, DodgyExportsWildcard,
TcRnDupeWildcardExport.
Note that this patch is specifically about top-level import/export
items. Subordinate import/export items are left unchanged.
- - - - -
c71faa76 by Luite Stegeman at 2025-12-01T03:16:05-05:00
rts: Handle overflow of ELF section header string table
If the section header string table is stored in a section greater
than or equal to SHN_LORESERVE (0xff00), the 16-bit field e_shstrndx
in the ELF header does not contain the section number, but rather
an overflow value SHN_XINDEX (0xffff) indicating that we need to look
elsewhere.
This fixes the linker by not using e_shstrndx directly but calling
elf_shstrndx, which correctly handles the SHN_XINDEX value.
Fixes #26603
- - - - -
ab20eb54 by Mike Pilgrem at 2025-12-01T22:46:55+00:00
Re CLC issue 292 Warn GHC.Internal.List.{init,last} are partial
Also corrects the warning for `tail` to refer to `Data.List.uncons` (like the existing warning for `head`).
In module `Settings.Warnings`, applies `-Wno-x-partial` to the `filepath`, and `parsec` packages (outside GHC's repository).
Also bumps submodules.
- - - - -
fc1d7f79 by Jade Lovelace at 2025-12-02T11:04:09-05:00
docs: fix StandaloneKindSignatures in DataKinds docs
These should be `type` as otherwise GHC reports a duplicate definition
error.
- - - - -
beae879b by Rodrigo Mesquita at 2025-12-03T15:42:37+01:00
task: Substitute some datatypes for newtypes
* Substitutes some data type declarations for newtype declarations
* Adds comment to `LlvmConfigCache`, which must decidedly not be a
newtype.
Fixes #23555
- - - - -
3bd7dd44 by mangoiv at 2025-12-04T04:36:45-05:00
Renamer: reinstate the template haskell level check in notFound
Out-of-scope names might be caused by a staging error, as is explained by
Note [Out of scope might be a staging error] in GHC.Tc.Utils.Env.hs.
This logic was assumed to be dead code after 217caad1 and has thus been
removed. This commit reintroduces it and thus fixes issue #26099.
- - - - -
0318010b by Zubin Duggal at 2025-12-04T04:37:27-05:00
testlib: Optionally include the way name in the expected output file
This allows us to have different outputs for different ways.
- - - - -
6d945fdd by Zubin Duggal at 2025-12-04T04:37:27-05:00
testsuite: Accept output of tests failing in ext-interp way due to differing compilation requirements
Fixes #26552
- - - - -
0ffc5243 by Cheng Shao at 2025-12-04T04:38:09-05:00
devx: minor fixes for compile_flags.txt
This patch includes minor fixes for compile_flags.txt to improve
developer experience when using clangd as language server to hack on
RTS C sources:
- Ensure `-fPIC` is passed and `__PIC__` is defined, to be coherent
with `-DDYNAMIC` and ensure the `__PIC__` guarded code paths are
indexed
- Add the missing `-DRtsWay` definition, otherwise a few source files
like `RtsUtils.c` and `Trace.c` would produce clangd errors
- - - - -
e36a5fcb by Matthew Pickering at 2025-12-05T16:25:57-05:00
Add support for building bytecode libraries
A bytecode library is a collection of bytecode files (.gbc) and a
library which combines together additional object files.
A bytecode library is created by invoking GHC with the `-bytecodelib`
flag.
A library can be created from in-memory `ModuleByteCode` linkables or
by passing `.gbc` files as arguments on the command line.
Fixes #26298
- - - - -
8f9ae339 by Matthew Pickering at 2025-12-05T16:25:57-05:00
Load bytecode libraries to satisfy package dependencies
This commit allows you to use a bytecode library to satisfy a package
dependency when using the interpreter.
If a user enables `-fprefer-byte-code`, then if a package provides a
bytecode library, that will be loaded and used to satisfy the
dependency.
The main change is to separate the relevant parts of the `LoaderState`
into external and home package byte code. Bytecode is loaded into either
the home package or external part (similar to HPT/EPS split), HPT
bytecode can be unloaded. External bytecode is never unloaded.
The unload function has also only been called with an empty list of
"stable linkables" for a long time. It has been modified to directly
implement a complete unloading of the home package bytecode linkables.
At the moment, the bytecode libraries are found in the "library-dirs"
field from the package description. In the future when `Cabal`
implements support for "bytecode-library-dirs" field, we can read the
bytecode libraries from there. No changes to the Cabal submodule are
necessary at the moment.
Four new tests are added in testsuite/tests/cabal, which generate fake
package descriptions and test loading the libraries into GHCi.
Fixes #26298
- - - - -
54458ce4 by mangoiv at 2025-12-05T16:26:50-05:00
ExplicitLevelImports: improve documentation of the code
- more explicit names for variable names like `flg` or `topLevel`
- don't pass the same value twice to functions
- some explanations of interesting but undocumented code paths
- adjust comment to not mention non-existent error message
- - - - -
c7061392 by mangoiv at 2025-12-05T16:27:42-05:00
driver: don't expect nodes to exist when checking paths between them
In `mgQueryZero`, previously node lookups were expected to never fail,
i.e. it was expected that when calculating the path between two nodes in
a zero level import graph, both nodes would always exist. This is not
the case, e.g. in some situations involving exact names (see the
test-case). The fix is to first check whether the node is present in the
graph at all, instead of panicking, just to report that there is no
path.
Closes #26568
- - - - -
d6cf8463 by Peng Fan at 2025-12-06T11:06:28-05:00
NCG/LA64: Simplify genCCall into two parts
genCCall is too long, so it's been simplified into two parts:
genPrim and genLibCCall.
Suggested by Andreas Klebinger
- - - - -
9d371d23 by Matthew Pickering at 2025-12-06T11:07:09-05:00
hadrian: Use a response file to invoke GHC for dep gathering.
In some cases we construct an argument list too long for GHC to
handle directly on windows. This happens when we generate
the dependency file because the command line will contain
references to a large number of .hs files.
To avoid this we now invoke GHC using a response file when
generating dependencies to sidestep length limitations.
Note that we only pass the actual file names in the dependency
file. Why? Because this side-steps #26560
- - - - -
0043bfb0 by Marc Scholten at 2025-12-06T11:08:03-05:00
update xhtml to 3000.4.0.0
haddock-api: bump xhtml bounds
haddock-api: use lazy text instead of string to support xhtml 3000.4.0.0
Bumping submodule xhtml to 3000.4.0.0
add xhtml to stage0Packages
remove unused import of writeUtf8File
Remove redundant import
Update haddock golden files for xhtml 3000.4.0.0
Metric Decrease:
haddock.Cabal
haddock.base
- - - - -
fc958fc9 by Julian Ospald at 2025-12-06T11:08:53-05:00
rts: Fix object file format detection in loadArchive
Commit 76d1041dfa4b96108cfdd22b07f2b3feb424dcbe seems to
have introduced this bug, ultimately leading to failure of
test T11788. I can only theorize that this test isn't run
in upstream's CI, because they don't build a static GHC.
The culprit is that we go through the thin archive, trying
to follow the members on the filesystem, but don't
re-identify the new object format of the member. This pins
`object_fmt` to `NotObject` from the thin archive.
Thanks to @angerman for spotting this.
- - - - -
0f297f6e by mangoiv at 2025-12-06T11:09:44-05:00
users' guide: don't use f strings in the python script to ensure compatibility with python 3.5
- - - - -
3bfe7aa2 by Matthew Pickering at 2025-12-07T12:18:57-05:00
ci: Try using multi repl in ghc-in-ghci test
This should be quite a bit faster than the ./hadrian/ghci command as it
doesn't properly build all the dependencies.
- - - - -
2ef1601a by Rodrigo Mesquita at 2025-12-07T12:19:38-05:00
Stack.Decode: Don't error on bitmap size 0
A RET_BCO may have a bitmap with no payload.
In that case, the bitmap = 0.
One can observe this by using -ddump-bcos and interpreting
```
main = pure ()
```
Observe, for instance, that the BCO for this main function has size 0:
```
ProtoBCO Main.main#0:
\u []
break<main:Main,0>() GHC.Internal.Base.pure
GHC.Internal.Base.$fApplicativeIO GHC.Internal.Tuple.()
bitmap: 0 []
BRK_FUN <breakarray> main:Main 0 <cc>
PACK () 0
PUSH_G GHC.Internal.Base.$fApplicativeIO
PUSH_APPLY_PP
PUSH_G GHC.Internal.Base.pure
ENTER
```
Perhaps we never tried to decode a stack in which a BCO like this was
present. However, for the debugger, we want to decode stacks of threads
stopped at breakpoints, and these kind of BCOs do get on a stack under
e.g. `stg_apply_interp_info` frames.
See the accompanying test in the next commit for an example to trigger
the bug this commit fixes.
Fixes #26640
- - - - -
747153d2 by Rodrigo Mesquita at 2025-12-07T12:19:38-05:00
Add test for #26640
- - - - -
d4b1e353 by Simon Hengel at 2025-12-10T00:00:02-05:00
Fix syntax error in gadt_syntax.rst
- - - - -
91cc8be6 by Cheng Shao at 2025-12-10T00:00:43-05:00
ci: fix "ci.sh clean" to address frequent out of space error on windows runners
This patch fixes the `ci.sh clean` logic to address frequent out of
space error on windows runners; previously it didn't clean up the
inplace mingw blobs, which is the largest source of space leak on
windows runners. See added comment for detailed explanation.
- - - - -
fe2b79f4 by Recursion Ninja at 2025-12-10T08:34:18-05:00
Narrow before optimising MUL/DIV/REM into shifts
The MUL/DIV/REM operations can be optimised into shifts when one of the
operands is a constant power of 2. However, as literals in Cmm are
stored as 'Integer', for this to be correct we first need to narrow the
literal to the appropriate width before checking whether the literal is
a power of 2.
Fixes #25664
- - - - -
06c2349c by Recursion Ninja at 2025-12-10T08:34:58-05:00
Decouple 'Language.Haskell.Syntax.Type' from 'GHC.Utils.Panic'
- Remove the *original* defintion of 'hsQTvExplicit' defined within 'Language.Haskell.Syntax.Type'
- Redefine 'hsQTvExplicit' as 'hsq_explicit' specialized to 'GhcPass' exported by 'GHC.Utils.Panic'
- Define 'hsQTvExplicitBinders' as 'hsq_explicit' specialized to 'DocNameI' exported by 'Haddock.GhcUtils'.
- Replace all call sites of the original 'hsQTvExplicit' definition with either:
1. 'hsQTvExplicit' updated definition
2. 'hsQTvExplicitBinders'
All call sites never entered the 'XLHsQTyVars' constructor branch, but a call to 'panic' existed on this code path because the type system was not strong enought to guarantee that the 'XLHsQTyVars' construction was impossible.
These two specialized functions provide the type system with enough information to make that guarantee, and hence the dependancy on 'panic' can be removed.
- - - - -
ac0815d5 by sheaf at 2025-12-10T23:39:57-05:00
Quantify arg before mult in function arrows
As noted in #23764, we expect quantification order to be left-to-right,
so that in a type such as
a %m -> b
the inferred quantification order should be [a, m, b] and not [m, a, b].
This was addressed in commit d31fbf6c, but that commit failed to update
some other functions such as GHC.Core.TyCo.FVs.tyCoFVsOfType.
This affects Haddock, as whether we print an explicit forall or not
depends on whether the inferred quantification order matches the actual
quantification order.
- - - - -
2caf796e by sheaf at 2025-12-10T23:39:57-05:00
Haddock: improvements to ty-var quantification
This commit makes several improvements to how Haddock deals with the
quantification of type variables:
1. In pattern synonyms, Haddock used to jumble up universal and
existential quantification. That is now fixed, fixing #26252.
Tested in the 'PatternSyns2' haddock-html test.
2. The logic for computing whether to use an explicit kind annotation
for a type variable quantified in a forall was not even wrong.
This commit improves the heuristic, but it will always remain an
imperfect heuristic (lest we actually run kind inference again).
In the future (#26271), we hope to avoid reliance on this heuristic.
- - - - -
b14bdd59 by Teo Camarasu at 2025-12-10T23:40:38-05:00
Add explicit export list to GHC.Num
Let's make clear what this module exports to allow us to easily deprecate and remove some of these in the future. Resolves https://gitlab.haskell.org/ghc/ghc/-/issues/26625
- - - - -
d99f8326 by Cheng Shao at 2025-12-11T19:14:18-05:00
compiler: remove unused CPP code in foreign stub
This patch removes unused CPP code in the generated foreign stub:
- `#define IN_STG_CODE 0` is not needed, since `Rts.h` already
includes this definition
- The `if defined(__cplusplus)` code paths are not needed in the `.c`
file, since we don't generate C++ stubs and don't include C++
headers in our stubs. But it still needs to be present in the `.h`
header since it might be later included into C++ source files.
- - - - -
46c9746f by Cheng Shao at 2025-12-11T19:14:57-05:00
configure: bump LlvmMaxVersion to 22
This commit bumps LlvmMaxVersion to 22; 21.x releases have been
available since Aug 26th, 2025 and there's no regressions with 21.x so
far. This bump is also required for updating fedora image to 43.
- - - - -
96fce8d0 by Cheng Shao at 2025-12-12T01:17:51+01:00
hadrian: add support for building with UndefinedBehaviorSanitizer
This patch adds a +ubsan flavour transformer to hadrian to build all
stage1+ C/C++ code with UndefinedBehaviorSanitizer. This is
particularly useful to catch potential undefined behavior in the RTS
codebase.
- - - - -
f7a06d8c by Cheng Shao at 2025-12-12T01:17:51+01:00
ci: update alpine/fedora & add ubsan job
This patch updates alpine image to 3.23, fedora image to 43, and adds
a `x86_64-linux-fedora43-validate+debug_info+ubsan` job that's run in
validate/nightly pipelines to catch undefined behavior in the RTS
codebase.
- - - - -
2ccd11ca by Cheng Shao at 2025-12-12T01:17:51+01:00
rts: fix zero-length VLA undefined behavior in interpretBCO
This commit fixes a zero-length VLA undefined behavior in interpretBCO, caught by UBSan:
```
+rts/Interpreter.c:3133:19: runtime variable length array bound evaluates to non-positive value 0
```
- - - - -
4156ed19 by Cheng Shao at 2025-12-12T01:17:51+01:00
rts: fix unaligned ReadSpB in interpretBCO
This commit fixes unaligned ReadSpB in interpretBCO, caught by UBSan:
```
+rts/Interpreter.c:2174:64: runtime load of misaligned address 0x004202059dd1 for type 'StgWord', which requires 8 byte alignment
```
To perform proper unaligned read, we define StgUnalignedWord as a type
alias of StgWord with aligned(1) attribute, and load StgUnalignedWord
instead of StgWord in ReadSpB, so the C compiler is aware that we're
not loading with natural alignment.
- - - - -
fef89fb9 by Cheng Shao at 2025-12-12T01:17:51+01:00
rts: fix signed integer overflow in subword arithmetic in interpretBCO
This commit fixes signed integer overflow in subword arithmetic in
interpretBCO, see added note for detailed explanation.
- - - - -
3c001377 by Cheng Shao at 2025-12-13T05:03:15-05:00
ci: use treeless fetch for perf notes
This patch improves the ci logic for fetching perf notes by using
treeless fetch
(https://github.blog/open-source/git/get-up-to-speed-with-partial-clone-and-…)
to avoid downloading all blobs of the perf notes repo at once, and
only fetch the actually required blobs on-demand when needed. This
makes the initial `test-metrics.sh pull` operation much faster, and
also more robust, since we are seeing an increasing rate of 504 errors
in CI when fetching all perf notes at once, which is a major source of
CI flakiness at this point.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
123a8d77 by Peter Trommler at 2025-12-13T05:03:57-05:00
Cmm: remove restriction in MachOp folding
- - - - -
0b54b5fd by Andreas Klebinger at 2025-12-13T05:04:38-05:00
Remove explicit Typeable deriviations.
- - - - -
08b13f7b by Cheng Shao at 2025-12-13T05:05:18-05:00
ci: set gc.auto=0 during setup stage
This patch sets `gc.auto=0` during `setup` stage of CI, see added
comment for detailed explanation.
- - - - -
3b5aecb5 by Ben Gamari at 2025-12-13T23:43:10+01:00
Bump exceptions submodule to 0.10.11
- - - - -
c32de3b0 by Johan Förberg at 2025-12-15T02:36:03-05:00
base: Define Semigroup and Monoid instances for lazy ST
CLC proposal:
https://github.com/haskell/core-libraries-committee/issues/374
Fixes #26581
- - - - -
4f8b660c by mangoiv at 2025-12-15T02:37:05-05:00
ci: do not require nightly cabal-reinstall job to succeed
- - - - -
2c2a3ef3 by Cheng Shao at 2025-12-15T11:51:53-05:00
docs: drop obsolete warning about -fexternal-interpreter on windows
This patch drops an obsolete warning about -fexternal-interpreter not
supported on windows; it is supported since a long time ago, including
the profiled way.
- - - - -
68573aa5 by Marc Scholten at 2025-12-15T11:53:00-05:00
haddock: Drop Haddock.Backends.HaddockDB as it's unused
- - - - -
b230d549 by mangoiv at 2025-12-16T15:17:45-05:00
base: generalize delete{Firsts,}By
When we delete{Firsts,}By we should not require the
lists to be the same type. This is an especially useful
generalisation in the case of deleteFirstsBy because we
can skip an invocation of the map function.
This change was discussed on the core-libraries-committee's bug
tracker at https://github.com/haskell/core-libraries-committee/issues/372.
- - - - -
6a2b43e3 by Cheng Shao at 2025-12-16T15:18:30-05:00
compiler: clean up redundant LANGUAGE pragmas
This patch bumps `default-language` of `ghc`/`ghc-bin` from `GHC2021`
to `GHC2024` (which is supported in ghc 9.10, current boot ghc lower
version bound), and also cleans up redundant `LANGUAGE` pragmas (as
well as `default-extensions`/`other-extensions`) that are already
implied by `GHC2024`.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
fca9cd7c by sheaf at 2025-12-18T13:18:18-05:00
X86 CodeGen: fix assign_eax_sse_regs
We must set %al to the number of SSE2 registers that contain arguments
(in case we are dealing with a varargs function). The logic for counting
how many arguments reside in SSE2 registers was incorrect, as it used
'isFloatFormat', which incorrectly ignores vector registers.
We now instead do case analysis on the register class:
is_sse_reg r =
case targetClassOfReg platform r of
RcFloatOrVector -> True
RcInteger -> False
This change is necessary to prevent segfaults in T20030_test1j, because
subsequent commits change the format calculations, resulting in vector
formats more often.
- - - - -
53150617 by sheaf at 2025-12-18T13:18:19-05:00
X86 regUsageOfInstr: fix format for IMUL
When used with 8-bit operands, the IMUL instruction returns the result
in the lower 16 bits of %rax (also known as %ax). This is different
than for the other sizes, where an input at 16, 32 or 64 bits will
result in 16, 32 or 64 bits of output in both %rax and %rdx.
This doesn't affect the behaviour of the compiler, because we don't
allow partial writes at sub-word sizes. The rationale is explained
in Wrinkle [Don't allow scalar partial writes] in Note [Register formats in liveness analysis],
in GHC.CmmToAsm.Reg.Liveness.
- - - - -
c7a56dd1 by sheaf at 2025-12-18T13:18:19-05:00
Liveness analysis: consider register formats
This commit updates the register allocator to be a bit more careful in
situations in which a single register is used at multiple different
formats, e.g. when xmm1 is used both to store a Double# and a DoubleX2#.
This is done by introducing the 'Regs' newtype around 'UniqSet RegWithFormat',
for which the combining operations take the larger of the two formats
instead of overriding the format.
Operations on 'Regs' are defined in 'GHC.CmmToAsm.Reg.Regs'. There is
a modest compile-time cost for the additional overhead for tracking
register formats, which causes the metric increases of this commit.
The subtle aspects of the implementation are outlined in
Note [Register formats in liveness analysis] in GHC.CmmToAsm.Reg.Liveness.
Fixes #26411 #26611
-------------------------
Metric Increase:
T12707
T26425
T3294
-------------------------
- - - - -
c2e83339 by sheaf at 2025-12-18T13:18:19-05:00
Register allocator: reload at same format as spill
This commit ensures that if we spill a register onto the stack at a
given format, we then always reload the register at this same format.
This ensures we don't end up in a situation where we spill F64x2 but end
up only reloading the lower F64. This first reload would make us believe
the whole data is in a register, thus silently losing the upper 64 bits
of the spilled register's contents.
Fixes #26526
- - - - -
55ab583b by sheaf at 2025-12-18T13:18:19-05:00
Register allocation: writes redefine format
As explained in Note [Allocated register formats] in GHC.CmmToAsm.Reg.Linear,
we consider all writes to redefine the format of the register.
This ensures that in a situation such as
movsd .Ln6m(%rip),%v1
shufpd $0,%v1,%v1
we properly consider the broadcast operation to change the format of %v1
from F64 to F64x2.
This completes the fix to #26411 (test in T26411b).
- - - - -
951402ed by Vladislav Zavialov at 2025-12-18T13:19:05-05:00
Parser: improve mkModuleImpExp, remove checkImportSpec
1. The `mkModuleImpExp` helper now knows whether it is processing an import or
export list item, and uses this information to produce a more accurate error
message for `import M (T(..,x))` with PatternSynonyms disabled.
The old message incorrectly referred to this case as an export form.
2. The `checkImportSpec` helper is removed in favor of more comprehensive error
checking in `mkModuleImpExp`.
3. Additionaly, the invariants of `ImpExpList` and `ImpExpAllWith` have been
made more explicit in the comments and assertions (calls to 'panic').
Test case: import-syntax-no-ext
- - - - -
47d83d96 by Vladislav Zavialov at 2025-12-18T13:19:06-05:00
Subordinate namespace-specified wildcards (#25901)
Add support for subordinate namespace-specified wildcards
`X(type ..)` and `X(data ..)` to import and export lists.
Examples:
import M (Cls(type ..)) -- imports Cls and all its associated types
import M (Cls(data ..)) -- imports Cls and all its methods
module M (R(data ..), C(type ..)) where
-- exports R and all its data constructors and record fields;
-- exports C and all its associated types, but not its methods
The scope of this change is limited to the case where the wildcard is the only
subordinate import/export item, whereas the more complex forms `X(type .., f)`
or `X(type .., data ..)` are unsupported and raise the newly introduced
PsErrUnsupportedExplicitNamespace error. This restriction may be lifted later.
Summary of the changes:
1. Refactor IEThingAll to store its extension field XIEThingAll as a record
IEThingAllExt instead of a tuple.
2. Extend the AST by adding a NamespaceSpecifier field to IEThingAllExt,
representing an optional namespace specifier `type` or `data` in front
of a subordinate wildcard `X(..)`.
3. Extend the grammar in Parser.y with productions for `type ..` and `data ..`
in subordinate import/export items.
4. Introduce `filterByNamespaceGREs` to filter [GlobalRdrElt] by a
NamespaceSpecifier; use it in `filterImports` and `exports_from_avail`
to account for the namespace specifier in IEThingAll.
5. Improve diagnostics by storing more information in DodgyImportsEmptyParent
and DodgyExportsEmptyParent.
Test cases:
T25901_sub_e T25901_sub_f T25901_sub_g T25901_sub_a
T25901_sub_b T25901_sub_c T25901_sub_d T25901_sub_w
DodgyImports02 DodgyImports03 DodgyImports04
- - - - -
eac418bb by Recursion Ninja at 2025-12-18T13:19:48-05:00
Removing the 'Data' instance for 'InstEnv'.
The 'Data' instance is blocking work on Trees that Grow, and the
'Data' instance seem to have been added without a clear purpose.
- - - - -
e920e038 by Recursion Ninja at 2025-12-18T13:19:48-05:00
'Decouple Language.Haskell.Syntax.Decls' from 'GHC.Unit.Module.Warnings'
- - - - -
bd38b76c by Cheng Shao at 2025-12-18T13:20:31-05:00
testsuite: improve coverage of foundation test
This patch refactors the `foundation` test a bit to improve coverage:
- Instead of using a hard-coded seed, a random seed is now taken from
the command line, and printed upon test failure. This improves test
coverage over many future CI runs, and shall a failure occur, the
seed is available in the CI log for local reproduction.
- The iterations count is bumped to 1000 instead of 100, similar to
the bump in `test-primops`. Runtime timeout is bumped 2x just to be
safe.
- Improve `newLCGGen` by using non-atomic loads/stores on a
`MutableByteArray#` for storing mutable `Word64`, this test doesn't
use parallelism in the first place
- Fixed a few compiler warnings and removed redundant pragmas and
imports
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
3995187c by Sylvain Henry at 2025-12-18T13:21:45-05:00
Doc: document -pgmi "" (#26634)
- - - - -
5729418c by Cheng Shao at 2025-12-18T13:22:29-05:00
rts: use __builtin_mul_overflow for hs_mulIntMayOflo
This patch uses `__builtin_mul_overflow` to implement
`hs_mulIntMayOflo`. This is a GNU C checked arithmetic builtin
function supported by gcc/clang, is type-generic so works for both
32-bit/64-bit, and makes the code both more efficient and easier to
read/maintain than the previous hand rolled logic.
- - - - -
1ca4b49a by Cheng Shao at 2025-12-18T13:23:11-05:00
compiler/rts: fix ABI mismatch in barf() invocations
This patch fixes a long-standing issue of ABI mismatch in `barf()`
invocations, both in compiler-emitted code and in hand written Cmm
code:
- In RTS, we have `barf()` which reports a fatal internal error
message and exits the program.
- `barf()` is a variadic C function! When used as a callee of a
foreign call with `ccall` calling convention instead of `capi`,
there is an ABI mismatch between the caller and the callee!
- Unfortunately, both the compiler and the Cmm sources contain many
places where we call `barf()` via `ccall` convention!! Like, when
you write `foreign "C" barf("foo object (%p) entered!", R1)`, it
totally doesn't do what you think it'll do at all!! The second
argument `R1` is not properly passed in `va_list`, and the behavior
is completely undefined!!
- Even more unfortunately, this issue has been sitting around long
enough because the ABI mismatch is subtle enough on normie platforms
like x64 and arm64.
- But there are platforms like wasm32 that are stricter about ABI, and
the broken `barf()` invocations already causes trouble for wasm
backend: we had to use ugly hacks like `barf(errmsg, NULL)` to make
`wasm-ld` happy, and even with this band-aid, compiler-generated
`barf()` invocations are still broken, resulting in regressions in
certain debug-related functionality, e.g. `-dtag-inference-checks`
is broken on wasm32 (#22882).
This patch properly fixes the issue:
- We add non-variadic `barf` wrappers in the RTS that can be used as
`ccall` callees
- Both the compiler `emitBarf` logic and the hand-written Cmm are
changed to call these wrappers
- `emitBarf` now also properly annotates the foreign call as
`CmmNeverReturns` to indicate it's a noreturn call to enable more
efficient code generation
`-dtag-inference-checks` now works on wasm. Closes #22882.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
b3dd23b9 by Vilim Lendvaj at 2025-12-18T13:23:57-05:00
Remove outdated comment
The Traversable instance for ZipList is no longer in
GHC.Internal.Data.Traversable. In fact, it is right below this very comment.
- - - - -
9a9c2f03 by Cheng Shao at 2025-12-18T13:24:39-05:00
compiler: remove unused OtherSection logic
This patch removes the OtherSection logic in Cmm, given it's never
actually used by any of our backends.
- - - - -
91edd292 by Wolfgang Jeltsch at 2025-12-19T03:18:19-05:00
Remove unused known-key and name variables for generics
This removes the known-key and corresponding name variables for `K1`,
`M1`, `R`, `D`, `C`, `S`, and `URec` from `GHC.Generics`, as they are
apparently nowhere used in GHC’s source code.
- - - - -
73ee7e38 by Wolfgang Jeltsch at 2025-12-19T03:19:02-05:00
Remove unused known keys and names for generics classes
This removes the known-key and corresponding name variables for
`Datatype`, `Constructor`, and `Selector` from `GHC.Generics`, as they
are apparently nowhere used in GHC’s source code.
- - - - -
f69c5f14 by Cheng Shao at 2025-12-19T03:19:45-05:00
wasm: fix handling of ByteArray#/MutableByteArray# arguments in JSFFI imports
This patch fixes the handling of ByteArray#/MutableByteArray#
arguments in JSFFI imports, see the amended note and manual for
explanation. Also adds a test to witness the fix.
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
224446a2 by Cheng Shao at 2025-12-20T07:49:54-05:00
rts: workaround -Werror=maybe-uninitialized false positives
In some cases gcc might report -Werror=maybe-uninitialized that we
know are false positives, but need to workaround it to make validate
builds with -Werror pass.
- - - - -
251ec087 by Cheng Shao at 2025-12-20T07:49:54-05:00
hadrian: use -Og as C/C++ optimization level when debugging
This commit enables -Og as optimization level when compiling the debug
ways of rts. According to gcc documentation
(https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html#index-Og)
-Og is a better choice than -O0 for producing debuggable code. It's
also supported by clang as well, so it makes sense to use it as a
default for debugging. Also add missing -g3 flag to C++ compilation
flags in +debug_info flavour transformer.
- - - - -
fb586c67 by Cheng Shao at 2025-12-20T07:50:36-05:00
compiler: replace DList with OrdList
This patch removes `DList` logic from the compiler and replaces it
with `OrdList` which also supports O(1) concatenation and should be
more memory efficient than the church-encoded `DList`.
- - - - -
8149c987 by Cheng Shao at 2025-12-20T17:06:51-05:00
hadrian: add with_profiled_libs flavour transformer
This patch adds a `with_profiled_libs` flavour transformer to hadrian
which is the exact opposite of `no_profiled_libs`. It adds profiling
ways to stage1+ rts/library ways, and doesn't alter other flavour
settings. It is useful when needing to test profiling logic locally
with a quick flavour.
- - - - -
746b18cd by Cheng Shao at 2025-12-20T17:06:51-05:00
hadrian: fix missing profiled dynamic libraries in profiled_ghc
This commit fixes the profiled_ghc flavour transformer to include
profiled dynamic libraries as well, since they're supported by GHC
since !12595.
- - - - -
4dd7e3b9 by Cheng Shao at 2025-12-20T17:07:33-05:00
ci: set http.postBuffer to mitigate perf notes timeout on some runners
This patch sets http.postBuffer to mitigate the timeout when fetching
perf notes on some runners with slow internet connection. Fixes #26684.
- - - - -
bc36268a by Wolfgang Jeltsch at 2025-12-21T16:23:24-05:00
Remove unused known keys and names for type representations
This removes the known-key and corresponding name variables for
`TrName`, `TrNameD`, `TypeRep`, `KindRepTypeLitD`, `TypeLitSort`, and
`mkTrType`, as they are apparently nowhere used in GHC’s source code.
- - - - -
ff5050e9 by Wolfgang Jeltsch at 2025-12-21T16:24:04-05:00
Remove unused known keys and names for natural operations
This removes the known-key and corresponding name variables for
`naturalAndNot`, `naturalLog2`, `naturalLogBaseWord`, `naturalLogBase`,
`naturalPowMod`, `naturalSizeInBase`, `naturalToFloat`, and
`naturalToDouble`, as they are apparently nowhere used in GHC’s source
code.
- - - - -
424388c2 by Wolfgang Jeltsch at 2025-12-21T16:24:45-05:00
Remove the unused known key and name for `Fingerprint`
This removes the variables for the known key and the name of the
`Fingerprint` data constructor, as they are apparently nowhere used in
GHC’s source code.
- - - - -
a1ed86fe by Wolfgang Jeltsch at 2025-12-21T16:25:26-05:00
Remove the unused known key and name for `failIO`
This removes the variables for the known key and the name of the
`failIO` operation, as they are apparently nowhere used in GHC’s source
code.
- - - - -
b8220daf by Wolfgang Jeltsch at 2025-12-21T16:26:07-05:00
Remove the unused known key and name for `liftM`
This removes the variables for the known key and the name of the `liftM`
operation, as they are apparently nowhere used in GHC’s source code.
- - - - -
eb0628b1 by Wolfgang Jeltsch at 2025-12-21T16:26:47-05:00
Fix the documentation of `hIsClosed`
- - - - -
db1ce858 by sheaf at 2025-12-22T17:11:17-05:00
Do deep subsumption when computing valid hole fits
This commit makes a couple of improvements to the code that
computes "valid hole fits":
1. It uses deep subsumption for data constructors.
This matches up the multiplicities, as per
Note [Typechecking data constructors].
This fixes #26338 (test: LinearHoleFits).
2. It now suggests (non-unidirectional) pattern synonyms as valid
hole fits. This fixes #26339 (test: PatSynHoleFit).
3. It uses 'stableNameCmp', to make the hole fit output deterministic.
-------------------------
Metric Increase:
hard_hole_fits
-------------------------
- - - - -
72ee9100 by sheaf at 2025-12-22T17:11:17-05:00
Speed up hole fits with a quick pre-test
This speeds up the machinery for valid hole fits by doing a small
check to rule out obviously wrong hole fits, such as:
1. A hole fit identifier whose type has a different TyCon at the head,
after looking through foralls and (=>) arrows, e.g.:
hole_ty = Int
cand_ty = Maybe a
or
hole_ty = forall a b. a -> b
cand_ty = forall x y. Either x y
2. A hole fit identifier that is not polymorphic when the hole type
is polymorphic, e.g.
hole_ty = forall a. a -> a
cand_ty = Int -> Int
-------------------------
Metric Decrease:
hard_hole_fits
-------------------------
- - - - -
30e513ba by Cheng Shao at 2025-12-22T17:12:00-05:00
configure: remove unused win32-tarballs.md5sum
This patch removes the unused `win32-tarballs.md5sum` file from the
tree. The current mingw tarball download logic in
`mk/get-win32-tarballs.py` fetches and checks against `SHA256SUM` from
the same location where the tarballs are fetched, and this file has
been unused for a few years.
- - - - -
a2d52b3b by Wolfgang Jeltsch at 2025-12-23T04:47:33-05:00
Add an operation `System.IO.hGetNewlineMode`
This commit also contains some small code and documentation changes for
related operations, for the sake of consistency.
- - - - -
b26d134a by Cheng Shao at 2025-12-23T04:48:15-05:00
rts: opportunistically reclaim slop space in shrinkMutableByteArray#
Previously, `shrinkMutableByteArray#` shrinks a `MutableByteArray#`
in-place by assigning the new size to it, and zeroing the extra slop
space. That slop space is not reclaimed and wasted. But it's often the
case that we allocate a `MutableByteArray#` upfront, then shrink it
shortly after, so the `MutableByteArray#` closure sits right at the
end of a nursery block; this patch identifies such chances, and also
shrink `bd->free` if possible, reducing heap space fragmentation.
Co-authored-by: Codex <codex(a)openai.com>
-------------------------
Metric Decrease:
T10678
-------------------------
- - - - -
c72ddabf by Cheng Shao at 2025-12-23T16:13:23-05:00
hadrian: fix bootstrapping with ghc-9.14
This patch fixes bootstrapping GHC with ghc-9.14, tested locally with
ghc-9.14.1 release as bootstrapping GHC.
- - - - -
0fd6d8e4 by Cheng Shao at 2025-12-23T16:14:05-05:00
hadrian: pass -keep-tmp-files to test ghc when --keep-test-files is enabled
This patch makes hadrian pass `-keep-tmp-files` to test ghc when
`--keep-test-files` is enabled, so you can check the ghc intermediate
files when debugging certain test failures. Closes #26688.
- - - - -
81d10134 by Cheng Shao at 2025-12-24T06:11:52-05:00
configure: remove dead code in configure scripts
This patch removes dead code in our configure scripts, including:
- Variables and auto-detected programs that are not used
- autoconf functions that are not used, or export a variable that's
not used
- `AC_CHECK_HEADERS` invocations that don't have actual corresponding
`HAVE_XXX_H` usage
- Other dead code (e.g. stray `AC_DEFUN()`)
Co-authored-by: Codex <codex(a)openai.com>
- - - - -
fb1381c3 by Wolfgang Jeltsch at 2025-12-24T06:12:34-05:00
Remove unused known keys and names for list operations
This removes the known-key and corresponding name variables for
`concat`, `filter`, `zip`, and `(++)`, as they are apparently nowhere
used in GHC’s source code.
- - - - -
7b9c20f4 by Recursion Ninja at 2025-12-24T10:35:36-05:00
Decoupling Language.Haskell.Syntax.Binds from GHC.Types.Basic
by transferring InlinePragma types between the modules.
* Moved InlinePragma data-types to Language.Haskell.Syntax.Binds.InlinePragma
* Partitioned of Arity type synonyms to GHC.Types.Arity
* InlinePragma is now extensible via Trees That Grow
* Activation is now extensible via Trees That Grow
* Maybe Arity change to more descriptive InlineSaturation data-type
* InlineSaturation information removed from InlinePragma during GHS parsing pass
* Cleaned up the exposed module interfaces of the new modules
- - - - -
a3afae0c by Simon Peyton Jones at 2025-12-25T15:26:36-05:00
Check for rubbish literals in Lint
Addresses #26607.
See new Note [Checking for rubbish literals] in GHC.Core.Lint
- - - - -
82ca0f56 by Alan Zimmerman at 2025-12-30T15:22:57+00:00
GHC-CPP: Initial implementation
Processes
#define FOO
#ifdef FOO
x = 1
#endif
Into
[ITcppIgnored [L loc ITcppDefine]
,ITcppIgnored [L loc ITcppIfdef]
,ITvarid "x"
,ITequal
,ITinteger (IL {il_text = SourceText "1", il_neg = False, il_value = 1})
,ITcppIgnored [L loc ITcppEndif]
,ITeof]
In time, ITcppIgnored will be pushed into a comment
Tidy up before re-visiting the continuation mechanic
Switch preprocessor to continuation passing style
Proof of concept, needs tidying up
Small cleanup
Get rid of some cruft
Summary: Patch:
Author: Alan Zimmerman <alan.zimm(a)gmail.com>
Date: 2025-10-12 16:23:56 +0100
Summary: Patch: rebase-and-tests-pass
Author: Alan Zimmerman <alan.zimm(a)gmail.com>
Date: 2025-10-12 14:19:04 +0100
Rebase, and all tests pass except whitespace for generated parser
Starting to integrate.
Need to get the pragma recognised and set
Make cppTokens extend to end of line, and process CPP comments
Remove unused ITcppDefined
Allow spaces between # and keyword for preprocessor directive
Process CPP continuation lines
They are emited as separate ITcppContinue tokens.
Perhaps the processing should be more like a comment, and keep on
going to the end.
BUT, the last line needs to be slurped as a whole.
Accumulate CPP continuations, process when ready
Can be simplified further, we only need one CPP token
Simplify Lexer interface. Only ITcpp
We transfer directive lines through it, then parse them from scratch
in the preprocessor.
Deal with directive on last line, with no trailing \n
Start parsing and processing the directives
Prepare for processing include files
Move PpState into PreProcess
And initParserState, initPragState too
Process nested include files
Also move PpState out of Lexer.x, so it is easy to evolve it in a ghci
session, loading utils/check-cpp/Main.hs
Split into separate files
Starting on expression parser.
But it hangs. Time for Text.Parsec.Expr
Start integrating the ghc-cpp work
From https://github.com/alanz/ghc-cpp
WIP
Fixup after rebase
WIP
Fixup after rebase, including all tests pass
Change pragma usage to GHC_CPP from GhcCPP
Some comments
Reformat
Delete unused file
Rename module Parse to ParsePP
Clarify naming in the parser
WIP. Switching to alex/happy to be able to work in-tree
Since Parsec is not available
Layering is now correct
- GHC lexer, emits CPP tokens
- accumulated in Preprocessor state
- Lexed by CPP lexer, CPP command extracted, tokens concated with
spaces (to get rid of token pasting via comments)
- if directive lexed and parsed by CPP lexer/parser, and evaluated
First example working
Loading Example1.hs into ghci, getting the right results
```
{-# LANGUAGE GHC_CPP #-}
module Example1 where
y = 3
x =
"hello"
"bye now"
foo = putStrLn x
```
Rebase, and all tests pass except whitespace for generated parser
info: patch template saved to `-`
More plumbing. Ready for testing tomorrow.
Proress. Renamed module State from Types
And at first blush it seems to handle preprocessor scopes properly.
Insert basic GHC version macros into parser
__GLASGOW_HASKELL__
__GLASGOW_HASKELL_FULL_VERSION__
__GLASGOW_HASKELL_PATCHLEVEL1__
__GLASGOW_HASKELL_PATCHLEVEL2__
Re-sync check-cpp for easy ghci work
Get rid of warnings
Rework macro processing, in check-cpp
Macros kept at the top level, looked up via name, multiple arity
versions per name can be stored
WIP. Can crack arguments for #define
Next step it to crack out args in an expansion
WIP on arg parsing.
Progress. Still screwing up nested parens.
Seems to work, but has redundant code
Remove redundant code
Reformat
Expand args, single pass
Still need to repeat until fixpoint
Fixed point expansion
Sync the playground to compiler
Working on dumping the GHC_CPP result
But We need to keep the BufSpan in a comment
Keep BufSpan in queued comments in GHC.Parser.Lexer
Getting close to being able to print the combined tokens
showing what is in and what is out
First implementation of dumpGhcCpp.
Example output
First dumps all macros in the state, then the source, showing which
lines are in and which are out
------------------------------
- |#define FOO(A,B) A + B
- |#define FOO(A,B,C) A + B + C
- |#if FOO(1,FOO(3,4)) == 8
- |-- a comment
|x = 1
- |#else
- |x = 5
- |#endif
Clean up a bit
Add -ddump-ghc-cpp option and a test based on it
Restore Lexer.x rules, we need them for continuation lines
Lexer.x: trying to sort out the span for continuations
- We need to match on \n at the end of the line
- We cannot simply back up for it
Inserts predefined macros. But does not dump properly
Because the cpp tokens have a trailing newline
Remove unnecessary LExer rules
We *need* the ones that explicitly match to the end of the line.
Generate correct span for ITcpp
Dump now works, except we do not render trailing `\` for continuation
lines. This is good enough for use in test output.
Reduce duplication in lexer
Tweaks
Insert min_version predefined macros into state
The mechanism now works. Still need to flesh out the full set.
Trying my alternative pragma syntax.
It works, but dumpGhcCpp is broken, I suspect from the ITcpp token
span update.
Pragma extraction now works, with both CPP and GHC_CPP
For the following
{-# LANGUAGE CPP #-}
#if __GLASGOW_HASKELL__ >= 913
{-# LANGUAGE GHC_CPP #-}
#endif
We will enable GHC_CPP only
Remove some tracing
Fix test exes for changes
For GHC_CPP tests, normalise config-time-based macros
WIP
WIP again. What is wrong?
Revert to dynflags for normal not pragma lexing
Working on getting check-exact to work properly
Passes CppCommentPlacement test
Starting on exact printing with GHC_CPP
While overriding normal CPP
Correctly store CPP ignored tokens as comments
By populating the lexeme string in it, based on the bufpos
WIP
Simplifying
Update the active state logic
Work the new logic into the mainline code
Process `defined` operator
Manage lexer state while skipping tokens
There is very intricate layout-related state used when lexing. If a
CPP directive blanks out some tokens, store this state when the
blanking starts, and restore it when they are no longer being blanked.
Track the last token buffer index, for ITCppIgnored
We need to attach the source being skipped in an ITCppIgnored token.
We cannot simply use its BufSpan as an index into the underlying
StringBuffer as it counts unicode chars, not bytes.
So we update the lexer state to store the starting StringBuffer
location for the last token, and use the already-stored length to
extract the correct portion of the StringBuffer being parsed.
Process the ! operator in GHC_CPP expressions
Predefine a constant when GHC_CPP is being used.
WIP
Skip lines directly in the lexer when required
Properly manage location when accepting tokens again
Seems to be working now, for Example9
Remove tracing
Fix parsing '*' in block comments
Instead of replacing them with '-'
Keep the trailing backslash in a ITcpp token
Deal with only enabling one section of a group.
A group is an instance of a conditional introduced by
#if/#ifdef/#ifndef,
and ending at the final #endif, including intermediate #elsif sections
Replace remaining identifiers with 0 when evaluating
As per the spec
Snapshot before rebase
Skip non-processed lines starting with #
Export generateMacros so we can use it in ghc-exactprint
Fix rebase
Expose initParserStateWithMacrosString
Fix buggy lexer cppSkip
It was skipping all lines, not just ones prefixed by #
Fix evaluation of && to use the correct operator
Deal with closing #-} at the start of a line
Add the MIN_VERSION_GLASGOW_HASKELL predefined macro
Include MIN_VERSION_GLASGOW_HASKELL in GhcCpp01.stderr
Use a strict map for macro defines
Process TIdentifierLParen
Which only matters at the start of #define
Do not provide TIdentifierLParen paren twice
Handle whitespace between identifier and '(' for directive only
Expose some Lexer bitmap manipulation helpers
Deal with line pragmas as tokens
Blows up for dumpGhcCpp though
Allow strings delimited by a single quote too
Allow leading whitespace on cpp directives
As per https://timsong-cpp.github.io/cppwp/n4140/cpp#1
Implement GHC_CPP undef
Sort out expansion of no-arg macros, in a context with args
And make the expansion bottom out, in the case of recursion
Fix GhcCpp01 test
The LINE pragma stuff works in ghc-exactprint when specifically
setting flag to emit ITline_pragma tokens
Process comments in CPP directives
Correctly lex pragmas with finel #-} on a newline
Do not process CPP-style comments
Allow cpp-style comments when GHC_CPP enabled
Return other pragmas as cpp ignored when GHC_CPP active
Reorganise getOptionsFromFile for use in ghc-exactprint
We want to be able to inject predefined macro definitions into the
parser preprocessor state for when we do a hackage roundtrip.
Tweak testing
Only allow unknown cpp pragmas with # in left margin
Require # against left margin for all GHC_CPP directives
Fix CPP directives appearing in pragmas
And add a test for error reporting for missing `#if`
Starting to report GHC_CPP errors using GHC machinery
More GHC_CPP diagnostic results
WIP on converting error calls to GHC diagnostics in GHC_CPP
Working on CPP diagnostic reporting
Tweak some tests/lint warnings
More error reporting in Macro
Some cleanups
Some cleanup
GHC_CPP: Working on improving error reporting
Harvest some commonality
Use PPM as Maybe inside PP
Clean up a bit
Fix GhcCpp01 test
I think this needs to be made more robust. Likely by not dumping the
(pre-)defined macros.
info: patch template saved to `-`
info: patch template saved to `-`
- - - - -
13d51a62 by Alan Zimmerman at 2025-12-30T15:23:05+00:00
Fix GhcCpp01 after rebase
- - - - -
0bad4975 by Alan Zimmerman at 2025-12-30T15:23:05+00:00
GHC_CPP: delete utils/check-cpp
It is not needed
- - - - -
892382ce by Alan Zimmerman at 2025-12-30T15:23:05+00:00
GHC_CPP: remove #include processing
We do not support it
- - - - -
4636b781 by Alan Zimmerman at 2025-12-30T16:29:36+00:00
GHC_CPP: move Eval.hs into GHC.Parser.PreProcess.Macro
- - - - -
1181 changed files:
- .gitattributes
- .gitlab-ci.yml
- .gitlab/ci.sh
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/jobs.yaml
- .gitlab/rel_eng/fetch-gitlab-artifacts/fetch_gitlab.py
- .gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py
- .gitlab/rel_eng/upload_ghc_libs.py
- .gitlab/test-metrics.sh
- cabal.project-reinstall
- compile_flags.txt
- compiler/GHC.hs
- compiler/GHC/Builtin/Names.hs
- compiler/GHC/Builtin/PrimOps.hs
- compiler/GHC/Builtin/PrimOps/Ids.hs
- compiler/GHC/Builtin/Types.hs
- compiler/GHC/Builtin/Types/Literals.hs
- compiler/GHC/Builtin/Types/Prim.hs
- compiler/GHC/Builtin/Utils.hs
- compiler/GHC/Builtin/primops.txt.pp
- compiler/GHC/ByteCode/Asm.hs
- compiler/GHC/ByteCode/Breakpoints.hs
- compiler/GHC/ByteCode/InfoTable.hs
- compiler/GHC/ByteCode/Instr.hs
- compiler/GHC/ByteCode/Linker.hs
- compiler/GHC/ByteCode/Serialize.hs
- compiler/GHC/ByteCode/Types.hs
- compiler/GHC/Cmm.hs
- compiler/GHC/Cmm/BlockId.hs
- compiler/GHC/Cmm/CLabel.hs
- compiler/GHC/Cmm/CommonBlockElim.hs
- compiler/GHC/Cmm/Config.hs
- compiler/GHC/Cmm/ContFlowOpt.hs
- compiler/GHC/Cmm/Dataflow.hs
- compiler/GHC/Cmm/Dataflow/Block.hs
- compiler/GHC/Cmm/Dataflow/Graph.hs
- compiler/GHC/Cmm/Dataflow/Label.hs
- compiler/GHC/Cmm/DebugBlock.hs
- compiler/GHC/Cmm/Dominators.hs
- compiler/GHC/Cmm/Expr.hs
- compiler/GHC/Cmm/Graph.hs
- compiler/GHC/Cmm/Info/Build.hs
- compiler/GHC/Cmm/LRegSet.hs
- compiler/GHC/Cmm/LayoutStack.hs
- compiler/GHC/Cmm/Lexer.x
- compiler/GHC/Cmm/Lint.hs
- compiler/GHC/Cmm/Liveness.hs
- compiler/GHC/Cmm/MachOp.hs
- compiler/GHC/Cmm/Node.hs
- compiler/GHC/Cmm/Opt.hs
- compiler/GHC/Cmm/Parser.y
- compiler/GHC/Cmm/Parser/Monad.hs
- compiler/GHC/Cmm/ProcPoint.hs
- compiler/GHC/Cmm/Reducibility.hs
- compiler/GHC/Cmm/Reg.hs
- compiler/GHC/Cmm/Sink.hs
- compiler/GHC/Cmm/Switch.hs
- compiler/GHC/Cmm/Switch/Implement.hs
- compiler/GHC/Cmm/ThreadSanitizer.hs
- compiler/GHC/Cmm/UniqueRenamer.hs
- compiler/GHC/Cmm/Utils.hs
- compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
- compiler/GHC/CmmToAsm/AArch64/Ppr.hs
- compiler/GHC/CmmToAsm/AArch64/RegInfo.hs
- compiler/GHC/CmmToAsm/BlockLayout.hs
- compiler/GHC/CmmToAsm/CFG.hs
- compiler/GHC/CmmToAsm/CPrim.hs
- compiler/GHC/CmmToAsm/Dwarf/Types.hs
- compiler/GHC/CmmToAsm/Format.hs
- compiler/GHC/CmmToAsm/LA64/CodeGen.hs
- compiler/GHC/CmmToAsm/LA64/Ppr.hs
- compiler/GHC/CmmToAsm/Monad.hs
- compiler/GHC/CmmToAsm/PPC/CodeGen.hs
- compiler/GHC/CmmToAsm/PPC/Ppr.hs
- compiler/GHC/CmmToAsm/PPC/RegInfo.hs
- compiler/GHC/CmmToAsm/Ppr.hs
- compiler/GHC/CmmToAsm/RV64/CodeGen.hs
- compiler/GHC/CmmToAsm/RV64/Ppr.hs
- compiler/GHC/CmmToAsm/Reg/Graph.hs
- compiler/GHC/CmmToAsm/Reg/Graph/Coalesce.hs
- compiler/GHC/CmmToAsm/Reg/Graph/Spill.hs
- compiler/GHC/CmmToAsm/Reg/Graph/SpillClean.hs
- compiler/GHC/CmmToAsm/Reg/Graph/SpillCost.hs
- compiler/GHC/CmmToAsm/Reg/Linear.hs
- compiler/GHC/CmmToAsm/Reg/Linear/Base.hs
- compiler/GHC/CmmToAsm/Reg/Linear/JoinToTargets.hs
- compiler/GHC/CmmToAsm/Reg/Linear/State.hs
- compiler/GHC/CmmToAsm/Reg/Linear/X86.hs
- compiler/GHC/CmmToAsm/Reg/Linear/X86_64.hs
- compiler/GHC/CmmToAsm/Reg/Liveness.hs
- + compiler/GHC/CmmToAsm/Reg/Regs.hs
- compiler/GHC/CmmToAsm/Reg/Target.hs
- compiler/GHC/CmmToAsm/Wasm.hs
- compiler/GHC/CmmToAsm/Wasm/Asm.hs
- compiler/GHC/CmmToAsm/Wasm/FromCmm.hs
- compiler/GHC/CmmToAsm/Wasm/Types.hs
- compiler/GHC/CmmToAsm/X86/CodeGen.hs
- compiler/GHC/CmmToAsm/X86/Instr.hs
- compiler/GHC/CmmToAsm/X86/Ppr.hs
- compiler/GHC/CmmToC.hs
- compiler/GHC/CmmToLlvm/Base.hs
- compiler/GHC/CmmToLlvm/CodeGen.hs
- compiler/GHC/CmmToLlvm/Data.hs
- compiler/GHC/Core.hs
- compiler/GHC/Core/Coercion.hs
- compiler/GHC/Core/Coercion.hs-boot
- compiler/GHC/Core/Coercion/Axiom.hs
- compiler/GHC/Core/Coercion/Opt.hs
- compiler/GHC/Core/ConLike.hs
- compiler/GHC/Core/DataCon.hs
- compiler/GHC/Core/FamInstEnv.hs
- compiler/GHC/Core/InstEnv.hs
- compiler/GHC/Core/LateCC/OverloadedCalls.hs
- compiler/GHC/Core/LateCC/TopLevelBinds.hs
- compiler/GHC/Core/Lint.hs
- compiler/GHC/Core/Lint/Interactive.hs
- compiler/GHC/Core/Make.hs
- compiler/GHC/Core/Map/Expr.hs
- compiler/GHC/Core/Map/Type.hs
- compiler/GHC/Core/Multiplicity.hs
- compiler/GHC/Core/Opt/Arity.hs
- compiler/GHC/Core/Opt/CSE.hs
- compiler/GHC/Core/Opt/CallArity.hs
- compiler/GHC/Core/Opt/CallerCC.hs
- compiler/GHC/Core/Opt/ConstantFold.hs
- compiler/GHC/Core/Opt/CprAnal.hs
- compiler/GHC/Core/Opt/DmdAnal.hs
- compiler/GHC/Core/Opt/Monad.hs
- compiler/GHC/Core/Opt/OccurAnal.hs
- compiler/GHC/Core/Opt/Pipeline.hs
- compiler/GHC/Core/Opt/Pipeline/Types.hs
- compiler/GHC/Core/Opt/Simplify.hs
- compiler/GHC/Core/Opt/Simplify/Env.hs
- compiler/GHC/Core/Opt/Simplify/Iteration.hs
- compiler/GHC/Core/Opt/Simplify/Utils.hs
- compiler/GHC/Core/Opt/SpecConstr.hs
- compiler/GHC/Core/Opt/Specialise.hs
- compiler/GHC/Core/Opt/WorkWrap.hs
- compiler/GHC/Core/Ppr.hs
- compiler/GHC/Core/Predicate.hs
- compiler/GHC/Core/RoughMap.hs
- compiler/GHC/Core/Rules.hs
- compiler/GHC/Core/SimpleOpt.hs
- compiler/GHC/Core/TyCo/Compare.hs
- compiler/GHC/Core/TyCo/FVs.hs
- compiler/GHC/Core/TyCo/Rep.hs
- compiler/GHC/Core/TyCon.hs
- compiler/GHC/Core/TyCon/Env.hs
- compiler/GHC/Core/Type.hs
- compiler/GHC/Core/Type.hs-boot
- compiler/GHC/Core/Unfold/Make.hs
- compiler/GHC/Core/Unify.hs
- compiler/GHC/Core/Utils.hs
- compiler/GHC/CoreToIface.hs
- compiler/GHC/CoreToStg.hs
- compiler/GHC/Data/Bag.hs
- compiler/GHC/Data/FastString.hs
- compiler/GHC/Data/Graph/Collapse.hs
- compiler/GHC/Data/Graph/Color.hs
- compiler/GHC/Data/Graph/Directed.hs
- compiler/GHC/Data/List/Infinite.hs
- compiler/GHC/Data/List/NonEmpty.hs
- compiler/GHC/Data/Maybe.hs
- compiler/GHC/Data/OsPath.hs
- compiler/GHC/Data/Pair.hs
- compiler/GHC/Data/Stream.hs
- compiler/GHC/Data/Strict.hs
- compiler/GHC/Data/StringBuffer.hs
- compiler/GHC/Data/TrieMap.hs
- compiler/GHC/Data/Word64Map.hs
- compiler/GHC/Driver/Backend.hs
- compiler/GHC/Driver/Backpack.hs
- compiler/GHC/Driver/CmdLine.hs
- compiler/GHC/Driver/CodeOutput.hs
- compiler/GHC/Driver/Config/Core/Lint.hs
- compiler/GHC/Driver/Config/Core/Lint/Interactive.hs
- compiler/GHC/Driver/Config/Core/Opt/Simplify.hs
- + compiler/GHC/Driver/Config/Interpreter.hs
- compiler/GHC/Driver/Config/Linker.hs
- compiler/GHC/Driver/Config/Parser.hs
- compiler/GHC/Driver/Config/StgToCmm.hs
- compiler/GHC/Driver/Config/Tidy.hs
- compiler/GHC/Driver/Downsweep.hs
- compiler/GHC/Driver/DynFlags.hs
- compiler/GHC/Driver/Env.hs
- compiler/GHC/Driver/Env/KnotVars.hs
- compiler/GHC/Driver/Errors.hs
- compiler/GHC/Driver/Errors/Ppr.hs
- compiler/GHC/Driver/Errors/Types.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/GenerateCgIPEStub.hs
- compiler/GHC/Driver/Hooks.hs
- compiler/GHC/Driver/LlvmConfigCache.hs
- compiler/GHC/Driver/Main.hs
- compiler/GHC/Driver/Make.hs
- compiler/GHC/Driver/MakeFile.hs
- compiler/GHC/Driver/MakeSem.hs
- compiler/GHC/Driver/Phases.hs
- compiler/GHC/Driver/Pipeline.hs
- compiler/GHC/Driver/Pipeline/Execute.hs
- compiler/GHC/Driver/Pipeline/LogQueue.hs
- compiler/GHC/Driver/Pipeline/Monad.hs
- compiler/GHC/Driver/Pipeline/Phases.hs
- compiler/GHC/Driver/Plugins.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/Driver/Session/Inspect.hs
- compiler/GHC/Driver/Session/Units.hs
- compiler/GHC/Hs.hs
- compiler/GHC/Hs/Basic.hs
- compiler/GHC/Hs/Binds.hs
- compiler/GHC/Hs/Decls.hs
- compiler/GHC/Hs/Doc.hs
- compiler/GHC/Hs/Doc.hs-boot
- compiler/GHC/Hs/DocString.hs
- compiler/GHC/Hs/Dump.hs
- compiler/GHC/Hs/Expr.hs
- compiler/GHC/Hs/Expr.hs-boot
- compiler/GHC/Hs/Extension.hs
- compiler/GHC/Hs/ImpExp.hs
- compiler/GHC/Hs/Instances.hs
- compiler/GHC/Hs/Lit.hs
- compiler/GHC/Hs/Pat.hs
- compiler/GHC/Hs/Pat.hs-boot
- compiler/GHC/Hs/Stats.hs
- compiler/GHC/Hs/Syn/Type.hs
- compiler/GHC/Hs/Type.hs
- compiler/GHC/Hs/Utils.hs
- compiler/GHC/HsToCore.hs
- compiler/GHC/HsToCore/Arrows.hs
- compiler/GHC/HsToCore/Binds.hs
- compiler/GHC/HsToCore/Docs.hs
- compiler/GHC/HsToCore/Errors/Ppr.hs
- compiler/GHC/HsToCore/Errors/Types.hs
- compiler/GHC/HsToCore/Expr.hs
- compiler/GHC/HsToCore/Foreign/C.hs
- compiler/GHC/HsToCore/Foreign/Decl.hs
- compiler/GHC/HsToCore/Foreign/JavaScript.hs
- compiler/GHC/HsToCore/Foreign/Wasm.hs
- compiler/GHC/HsToCore/ListComp.hs
- compiler/GHC/HsToCore/Match.hs
- compiler/GHC/HsToCore/Match/Literal.hs
- compiler/GHC/HsToCore/Monad.hs
- compiler/GHC/HsToCore/Pmc.hs
- compiler/GHC/HsToCore/Pmc/Check.hs
- compiler/GHC/HsToCore/Pmc/Desugar.hs
- compiler/GHC/HsToCore/Pmc/Solver.hs
- compiler/GHC/HsToCore/Pmc/Solver/Types.hs
- compiler/GHC/HsToCore/Pmc/Types.hs
- compiler/GHC/HsToCore/Pmc/Utils.hs
- compiler/GHC/HsToCore/Quote.hs
- compiler/GHC/HsToCore/Ticks.hs
- compiler/GHC/HsToCore/Utils.hs
- compiler/GHC/Iface/Binary.hs
- compiler/GHC/Iface/Decl.hs
- compiler/GHC/Iface/Env.hs
- compiler/GHC/Iface/Errors.hs
- compiler/GHC/Iface/Errors/Ppr.hs
- compiler/GHC/Iface/Errors/Types.hs
- compiler/GHC/Iface/Ext/Ast.hs
- compiler/GHC/Iface/Ext/Debug.hs
- compiler/GHC/Iface/Ext/Types.hs
- compiler/GHC/Iface/Ext/Utils.hs
- compiler/GHC/Iface/Load.hs
- compiler/GHC/Iface/Make.hs
- compiler/GHC/Iface/Recomp.hs
- compiler/GHC/Iface/Rename.hs
- compiler/GHC/Iface/Syntax.hs
- compiler/GHC/Iface/Tidy.hs
- compiler/GHC/Iface/Tidy/StaticPtrTable.hs
- compiler/GHC/Iface/Type.hs
- compiler/GHC/Iface/Warnings.hs
- compiler/GHC/IfaceToCore.hs
- compiler/GHC/JS/Ident.hs
- compiler/GHC/JS/JStg/Monad.hs
- compiler/GHC/JS/JStg/Syntax.hs
- compiler/GHC/JS/Make.hs
- compiler/GHC/JS/Optimizer.hs
- compiler/GHC/JS/Ppr.hs
- compiler/GHC/JS/Syntax.hs
- compiler/GHC/JS/Transform.hs
- + compiler/GHC/Linker/ByteCode.hs
- compiler/GHC/Linker/Config.hs
- compiler/GHC/Linker/Deps.hs
- compiler/GHC/Linker/Dynamic.hs
- + compiler/GHC/Linker/Executable.hs
- − compiler/GHC/Linker/ExtraObj.hs
- compiler/GHC/Linker/Loader.hs
- compiler/GHC/Linker/MacOS.hs
- compiler/GHC/Linker/Static.hs
- compiler/GHC/Linker/Types.hs
- compiler/GHC/Linker/Windows.hs
- compiler/GHC/Llvm/MetaData.hs
- compiler/GHC/Llvm/Ppr.hs
- compiler/GHC/Llvm/Types.hs
- compiler/GHC/Parser.hs-boot
- compiler/GHC/Parser.y
- compiler/GHC/Parser/Annotation.hs
- compiler/GHC/Parser/Errors/Basic.hs
- compiler/GHC/Parser/Errors/Ppr.hs
- compiler/GHC/Parser/Errors/Types.hs
- compiler/GHC/Parser/HaddockLex.x
- compiler/GHC/Parser/Header.hs
- compiler/GHC/Parser/Lexer.x
- compiler/GHC/Parser/PostProcess.hs
- compiler/GHC/Parser/PostProcess/Haddock.hs
- + compiler/GHC/Parser/PreProcess.hs
- + compiler/GHC/Parser/PreProcess/Lexer.x
- + compiler/GHC/Parser/PreProcess/Macro.hs
- + compiler/GHC/Parser/PreProcess/ParsePP.hs
- + compiler/GHC/Parser/PreProcess/Parser.y
- + compiler/GHC/Parser/PreProcess/ParserM.hs
- + compiler/GHC/Parser/PreProcess/State.hs
- compiler/GHC/Parser/String.hs
- compiler/GHC/Parser/Types.hs
- compiler/GHC/Parser/Utils.hs
- compiler/GHC/Platform.hs
- compiler/GHC/Platform/Reg/Class.hs
- compiler/GHC/Platform/Reg/Class/NoVectors.hs
- compiler/GHC/Platform/Reg/Class/Separate.hs
- compiler/GHC/Platform/Reg/Class/Unified.hs
- compiler/GHC/Prelude/Basic.hs
- compiler/GHC/Rename/Bind.hs
- compiler/GHC/Rename/Env.hs
- compiler/GHC/Rename/Expr.hs
- compiler/GHC/Rename/Expr.hs-boot
- compiler/GHC/Rename/HsType.hs
- compiler/GHC/Rename/Module.hs
- compiler/GHC/Rename/Names.hs
- compiler/GHC/Rename/Pat.hs
- compiler/GHC/Rename/Splice.hs
- compiler/GHC/Rename/Unbound.hs
- compiler/GHC/Rename/Utils.hs
- compiler/GHC/Runtime/Debugger.hs
- compiler/GHC/Runtime/Eval.hs
- compiler/GHC/Runtime/Heap/Layout.hs
- compiler/GHC/Runtime/Interpreter.hs
- + compiler/GHC/Runtime/Interpreter/C.hs
- + compiler/GHC/Runtime/Interpreter/Init.hs
- compiler/GHC/Runtime/Interpreter/JS.hs
- compiler/GHC/Runtime/Interpreter/Process.hs
- compiler/GHC/Runtime/Interpreter/Types.hs
- compiler/GHC/Runtime/Interpreter/Types/SymbolCache.hs
- compiler/GHC/Settings.hs
- compiler/GHC/Settings/IO.hs
- compiler/GHC/Stg/Debug.hs
- compiler/GHC/Stg/EnforceEpt.hs
- compiler/GHC/Stg/EnforceEpt/Rewrite.hs
- compiler/GHC/Stg/EnforceEpt/TagSig.hs
- compiler/GHC/Stg/EnforceEpt/Types.hs
- compiler/GHC/Stg/FVs.hs
- compiler/GHC/Stg/Lift/Analysis.hs
- compiler/GHC/Stg/Lift/Monad.hs
- compiler/GHC/Stg/Lift/Types.hs
- compiler/GHC/Stg/Lint.hs
- compiler/GHC/Stg/Pipeline.hs
- compiler/GHC/Stg/Syntax.hs
- compiler/GHC/Stg/Unarise.hs
- compiler/GHC/Stg/Utils.hs
- compiler/GHC/StgToByteCode.hs
- compiler/GHC/StgToCmm.hs
- compiler/GHC/StgToCmm/ArgRep.hs
- compiler/GHC/StgToCmm/Bind.hs
- compiler/GHC/StgToCmm/CgUtils.hs
- compiler/GHC/StgToCmm/Closure.hs
- compiler/GHC/StgToCmm/ExtCode.hs
- compiler/GHC/StgToCmm/InfoTableProv.hs
- compiler/GHC/StgToCmm/Lit.hs
- compiler/GHC/StgToCmm/Monad.hs
- compiler/GHC/StgToCmm/Prim.hs
- compiler/GHC/StgToCmm/Utils.hs
- compiler/GHC/StgToJS/Apply.hs
- compiler/GHC/StgToJS/Arg.hs
- compiler/GHC/StgToJS/CodeGen.hs
- compiler/GHC/StgToJS/DataCon.hs
- compiler/GHC/StgToJS/Deps.hs
- compiler/GHC/StgToJS/Expr.hs
- compiler/GHC/StgToJS/ExprCtx.hs
- compiler/GHC/StgToJS/FFI.hs
- compiler/GHC/StgToJS/Heap.hs
- compiler/GHC/StgToJS/Linker/Linker.hs
- compiler/GHC/StgToJS/Linker/Opt.hs
- compiler/GHC/StgToJS/Linker/Types.hs
- compiler/GHC/StgToJS/Literal.hs
- compiler/GHC/StgToJS/Monad.hs
- compiler/GHC/StgToJS/Object.hs
- compiler/GHC/StgToJS/Prim.hs
- compiler/GHC/StgToJS/Regs.hs
- compiler/GHC/StgToJS/Rts/Rts.hs
- compiler/GHC/StgToJS/Rts/Types.hs
- compiler/GHC/StgToJS/Sinker/Collect.hs
- compiler/GHC/StgToJS/Sinker/Sinker.hs
- compiler/GHC/StgToJS/Sinker/StringsUnfloat.hs
- compiler/GHC/StgToJS/Types.hs
- compiler/GHC/StgToJS/Utils.hs
- compiler/GHC/SysTools.hs
- compiler/GHC/SysTools/Ar.hs
- compiler/GHC/SysTools/BaseDir.hs
- compiler/GHC/SysTools/Cpp.hs
- compiler/GHC/SysTools/Tasks.hs
- compiler/GHC/SysTools/Terminal.hs
- compiler/GHC/Tc/Deriv.hs
- compiler/GHC/Tc/Deriv/Functor.hs
- compiler/GHC/Tc/Deriv/Generate.hs
- compiler/GHC/Tc/Deriv/Generics.hs
- compiler/GHC/Tc/Deriv/Utils.hs
- compiler/GHC/Tc/Errors.hs
- compiler/GHC/Tc/Errors/Hole.hs
- compiler/GHC/Tc/Errors/Hole/FitTypes.hs
- compiler/GHC/Tc/Errors/Hole/Plugin.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Errors/Types.hs
- compiler/GHC/Tc/Errors/Types/PromotionErr.hs
- compiler/GHC/Tc/Gen/Annotation.hs
- compiler/GHC/Tc/Gen/App.hs
- compiler/GHC/Tc/Gen/Arrow.hs
- compiler/GHC/Tc/Gen/Bind.hs
- compiler/GHC/Tc/Gen/Default.hs
- compiler/GHC/Tc/Gen/Do.hs
- compiler/GHC/Tc/Gen/Export.hs
- compiler/GHC/Tc/Gen/Expr.hs
- compiler/GHC/Tc/Gen/Expr.hs-boot
- compiler/GHC/Tc/Gen/Foreign.hs
- compiler/GHC/Tc/Gen/Head.hs
- compiler/GHC/Tc/Gen/HsType.hs
- compiler/GHC/Tc/Gen/Match.hs
- compiler/GHC/Tc/Gen/Pat.hs
- compiler/GHC/Tc/Gen/Sig.hs
- compiler/GHC/Tc/Gen/Splice.hs
- compiler/GHC/Tc/Instance/Class.hs
- compiler/GHC/Tc/Instance/Family.hs
- compiler/GHC/Tc/Instance/FunDeps.hs
- compiler/GHC/Tc/Instance/Typeable.hs
- compiler/GHC/Tc/Module.hs
- compiler/GHC/Tc/Solver.hs
- compiler/GHC/Tc/Solver/Default.hs
- compiler/GHC/Tc/Solver/Dict.hs
- compiler/GHC/Tc/Solver/Equality.hs
- + compiler/GHC/Tc/Solver/FunDeps.hs
- compiler/GHC/Tc/Solver/InertSet.hs
- compiler/GHC/Tc/Solver/Irred.hs
- compiler/GHC/Tc/Solver/Monad.hs
- compiler/GHC/Tc/Solver/Rewrite.hs
- compiler/GHC/Tc/Solver/Solve.hs
- compiler/GHC/Tc/Solver/Solve.hs-boot
- compiler/GHC/Tc/Solver/Types.hs
- compiler/GHC/Tc/TyCl.hs
- compiler/GHC/Tc/TyCl/Build.hs
- compiler/GHC/Tc/TyCl/Instance.hs
- compiler/GHC/Tc/TyCl/PatSyn.hs
- compiler/GHC/Tc/TyCl/Utils.hs
- compiler/GHC/Tc/Types.hs
- compiler/GHC/Tc/Types/Constraint.hs
- compiler/GHC/Tc/Types/ErrCtxt.hs
- compiler/GHC/Tc/Types/Evidence.hs
- compiler/GHC/Tc/Types/Origin.hs
- compiler/GHC/Tc/Utils/Backpack.hs
- compiler/GHC/Tc/Utils/Concrete.hs
- compiler/GHC/Tc/Utils/Env.hs
- compiler/GHC/Tc/Utils/Instantiate.hs
- compiler/GHC/Tc/Utils/Monad.hs
- compiler/GHC/Tc/Utils/TcMType.hs
- compiler/GHC/Tc/Utils/TcType.hs
- compiler/GHC/Tc/Utils/Unify.hs
- compiler/GHC/Tc/Validity.hs
- compiler/GHC/Tc/Zonk/Monad.hs
- compiler/GHC/Tc/Zonk/TcType.hs
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- utils/check-exact/Utils.hs
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- utils/genapply/Main.hs
- utils/genprimopcode/genprimopcode.cabal
- utils/ghc-pkg/Main.hs
- utils/ghc-toolchain/ghc-toolchain.cabal
- utils/ghc-toolchain/src/GHC/Toolchain/CheckArm.hs
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- utils/ghc-toolchain/src/GHC/Toolchain/Utils.hs
- utils/haddock/cabal.project
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- utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Parser.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Renderer.hs
- utils/haddock/haddock-api/src/Haddock/Backends/LaTeX.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Xhtml.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/DocMarkup.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Layout.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Names.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Themes.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Utils.hs
- utils/haddock/haddock-api/src/Haddock/Convert.hs
- utils/haddock/haddock-api/src/Haddock/Doc.hs
- utils/haddock/haddock-api/src/Haddock/GhcUtils.hs
- utils/haddock/haddock-api/src/Haddock/Interface/Create.hs
- utils/haddock/haddock-api/src/Haddock/Interface/Rename.hs
- utils/haddock/haddock-api/src/Haddock/Parser.hs
- utils/haddock/haddock-api/src/Haddock/Types.hs
- utils/haddock/haddock-api/src/Haddock/Utils.hs
- utils/haddock/haddock-library/src/Documentation/Haddock/Parser.hs
- utils/haddock/haddock-test/src/Test/Haddock.hs
- utils/haddock/html-test/ref/Bug1004.html
- utils/haddock/html-test/ref/Bug1050.html
- utils/haddock/html-test/ref/Bug26.html
- + utils/haddock/html-test/ref/Bug26246.html
- utils/haddock/html-test/ref/Bug298.html
- utils/haddock/html-test/ref/Bug458.html
- utils/haddock/html-test/ref/Bug85.html
- utils/haddock/html-test/ref/Bug923.html
- utils/haddock/html-test/ref/BundledPatterns.html
- utils/haddock/html-test/ref/BundledPatterns2.html
- utils/haddock/html-test/ref/ConstructorPatternExport.html
- utils/haddock/html-test/ref/GADTRecords.html
- utils/haddock/html-test/ref/LinearTypes.html
- utils/haddock/html-test/ref/Nesting.html
- utils/haddock/html-test/ref/PatternSyns.html
- + utils/haddock/html-test/ref/PatternSyns2.html
- utils/haddock/html-test/ref/PromotedTypes.html
- utils/haddock/html-test/ref/TitledPicture.html
- utils/haddock/html-test/ref/TypeOperators.html
- utils/haddock/html-test/ref/Unicode.html
- utils/haddock/html-test/ref/Unicode2.html
- + utils/haddock/html-test/src/Bug26246.hs
- + utils/haddock/html-test/src/PatternSyns2.hs
- utils/haddock/hypsrc-test/ref/src/Classes.html
- utils/haddock/hypsrc-test/ref/src/Quasiquoter.html
- utils/haddock/latex-test/ref/LinearTypes/LinearTypes.tex
- utils/hpc
- utils/hsc2hs
- utils/iserv/iserv.cabal.in
- utils/jsffi/dyld.mjs
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/2a73e7a48095e197524dbc23d41821…
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