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[Git][ghc/ghc][wip/rts-mutex-static-initializer] 47 commits: hadrian: add support for building with UndefinedBehaviorSanitizer
by Cheng Shao (＠TerrorJack) 22 Dec '25

22 Dec '25

Cheng Shao pushed to branch wip/rts-mutex-static-initializer at Glasgow Haskell Compiler / GHC Commits: 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` - - - - - b1ab6928 by Cheng Shao at 2025-12-22T07:53:11+01:00 rts: replace initMutex/closeMutex with static initializer This patch drops all `initMutex`/`closeMutex` logic from the RTS, and instead define and use a static initializer `MUTEX_INIT` to initialize a `Mutex`. For both pthreads/win32 cases, a mutex is just a process-private cheap resource that doesn't really need to be freed upon RTS exit; it can be statically initialized inplace using either `PTHREAD_MUTEX_INITIALIZER` or `SRWLOCK_INIT`, hence we define `MUTEX_INIT` and prefer to use it to initialize a `Mutex`. All `closeMutex` invocations are dropped. Most `initMutex` invocations are dropped, except non-global ones, and the ones that need to be re-initialized in the child process after `forkProcess`, these are replaced by assigning `MUTEX_INIT`. The patch also drops `initIpe`/`exitIpe`/`stat_exit` since they are now no-ops. Also cleans up legacy wasm32 stub definitions, since wasi-libc started shipping basic pthread stubs in wasip1 sysroot. Sadly, we can't do the same for condition variables, since `PTHREAD_COND_INITIALIZER` defaults to real-time but we want monotonic time. The main motivation of this patch is not just housecleaning: it is to make it easier to acquire/release a global Mutex in C initializer functions generated by GHC (some custom instrumentation for debugging purpose). Now that a global Mutex can be statically initialized in-place using `MUTEX_INIT`, the initializer code can acquire/release it without worrying about Mutex initialization, otherwise it needs to be initialized in another initializer function with higher priority, which complicates the implementation. Co-authored-by: Codex <codex(a)openai.com> - - - - - 599 changed files: - .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/test-metrics.sh - compiler/GHC.hs - compiler/GHC/Builtin/Names.hs - compiler/GHC/Builtin/PrimOps.hs - compiler/GHC/Builtin/PrimOps/Ids.hs - compiler/GHC/Builtin/Types/Literals.hs - compiler/GHC/Builtin/Utils.hs - 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/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/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/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/Ppr.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 - 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+ testsuite/tests/warnings/should_compile/DodgyImports02.stderr - + testsuite/tests/warnings/should_compile/DodgyImports03.hs - + testsuite/tests/warnings/should_compile/DodgyImports03.stderr - + testsuite/tests/warnings/should_compile/DodgyImports03_helper.hs - + testsuite/tests/warnings/should_compile/DodgyImports04.hs - + testsuite/tests/warnings/should_compile/DodgyImports04.stderr - testsuite/tests/warnings/should_compile/DodgyImports_hiding.stderr - testsuite/tests/warnings/should_compile/all.T - utils/check-exact/ExactPrint.hs - utils/genapply/Main.hs - utils/haddock/haddock-api/haddock-api.cabal - − utils/haddock/haddock-api/src/Haddock/Backends/HaddockDB.hs - utils/haddock/haddock-api/src/Haddock/Interface/Create.hs The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/c2d9398a059ea7487f18488d8aac81… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/c2d9398a059ea7487f18488d8aac81… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/ani/hie-spans] haddock changes for new variant
by Apoorv Ingle (＠ani) 22 Dec '25

22 Dec '25

Apoorv Ingle pushed to branch wip/ani/hie-spans at Glasgow Haskell Compiler / GHC Commits: b4c72787 by Apoorv Ingle at 2025-12-22T00:43:39-06:00 haddock changes for new variant - - - - - 2 changed files: - utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Parser.hs - utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Utils.hs Changes: ===================================== utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Parser.hs ===================================== @@ -155,6 +155,53 @@ parse parserOpts sDocContext fpath bs = case unP (go False []) initState of pure (plainTok : [spaceTok | not (BS.null spaceBStr)], inPrag') + GeneratedSrcSpan rsp -> do + let typ = if inPrag then TkPragma else classify tok + RealSrcLoc lStart _ = srcSpanStart sp -- safe since @sp@ is real + (spaceBStr, bStart) = spanPosition lInit lStart bInit + inPragDef = inPragma inPrag tok + + (bEnd', inPrag') <- case tok of + -- Update internal line + file position if this is a LINE pragma + ITline_prag _ -> tryOrElse (bEnd, inPragDef) $ do + L _ (ITinteger (IL{il_value = line})) <- tryP wrappedLexer + L _ (ITstring _ file) <- tryP wrappedLexer + L spF ITclose_prag <- tryP wrappedLexer + + let newLoc = mkRealSrcLoc file (fromIntegral line - 1) (srcSpanEndCol spF) + (bEnd'', _) <- lift getInput + lift $ setInput (bEnd'', newLoc) + + pure (bEnd'', False) + + -- Update internal column position if this is a COLUMN pragma + ITcolumn_prag _ -> tryOrElse (bEnd, inPragDef) $ do + L _ (ITinteger (IL{il_value = col})) <- tryP wrappedLexer + L spF ITclose_prag <- tryP wrappedLexer + + let newLoc = mkRealSrcLoc (srcSpanFile spF) (srcSpanEndLine spF) (fromIntegral col) + (bEnd'', _) <- lift getInput + lift $ setInput (bEnd'', newLoc) + + pure (bEnd'', False) + _ -> pure (bEnd, inPragDef) + + let tokBStr = splitStringBuffer bStart bEnd' + plainTok = + T.Token + { tkType = typ + , tkValue = tokBStr + , tkSpan = rsp + } + spaceTok = + T.Token + { tkType = TkSpace + , tkValue = spaceBStr + , tkSpan = mkRealSrcSpan lInit lStart + } + + pure (plainTok : [spaceTok | not (BS.null spaceBStr)], inPrag') + -- \| Parse whatever remains of the line as an unknown token (can't fail) unknownLine :: P ([T.Token], Bool) unknownLine = do ===================================== utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Utils.hs ===================================== @@ -103,6 +103,8 @@ spliceURL' maybe_mod maybe_name maybe_loc = run case span_ of RealSrcSpan span__ _ -> show $ srcSpanStartLine span__ + GeneratedSrcSpan span__ -> + show $ srcSpanStartLine span__ UnhelpfulSpan _ -> "" run "" = "" View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/b4c72787d6b48e1e0ea29f95a465389… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/b4c72787d6b48e1e0ea29f95a465389… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc] Pushed new branch wip/ani/hie-spans
by Apoorv Ingle (＠ani) 22 Dec '25

22 Dec '25

Apoorv Ingle pushed new branch wip/ani/hie-spans at Glasgow Haskell Compiler / GHC -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/ani/hie-spans You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/terrorjack/asan] 20 commits: Remove unused known-key and name variables for generics
by Cheng Shao (＠TerrorJack) 22 Dec '25

22 Dec '25

Cheng Shao pushed to branch wip/terrorjack/asan at Glasgow Haskell Compiler / GHC Commits: 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` - - - - - 0b8db563 by Cheng Shao at 2025-12-22T06:48:54+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. - - - - - 0e61bfec by Cheng Shao at 2025-12-22T06:48:54+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. - - - - - 44aff5d9 by Cheng Shao at 2025-12-22T06:48:54+01:00 ci: add ubsan+asan job We now have a `x86_64-linux-fedora43-validate+debug_info+ubsan+asan` validate/nightly job with both UBSan/ASan enabled. - - - - - 71b381b4 by Cheng Shao at 2025-12-22T06:48:55+01:00 rts: add ASAN instrumentation to mblock allocator - - - - - ebcb7265 by Cheng Shao at 2025-12-22T06:48:55+01:00 rts: add ASAN instrumentation to per-Task InCall free list - - - - - 30 changed files: - .gitlab/ci.sh - .gitlab/generate-ci/gen_ci.hs - .gitlab/jobs.yaml - compiler/GHC/Builtin/Names.hs - compiler/GHC/HsToCore/Foreign/Wasm.hs - compiler/GHC/Parser/String.hs - compiler/GHC/StgToCmm/InfoTableProv.hs - docs/users_guide/wasm.rst - hadrian/doc/flavours.md - hadrian/src/Flavour.hs - hadrian/src/Settings/Packages.hs - libraries/ghc-internal/src/GHC/Internal/IO/Handle.hs - rts/.ubsan-suppressions - rts/Task.c - rts/include/Stg.h - + rts/include/rts/ASANUtils.h - rts/linker/InitFini.c - rts/rts.cabal - rts/sm/MBlock.c - rts/sm/Sanity.c - testsuite/driver/testglobals.py - testsuite/driver/testlib.py - testsuite/tests/ffi/should_run/all.T - testsuite/tests/jsffi/all.T - + testsuite/tests/jsffi/bytearrayarg.hs - + testsuite/tests/jsffi/bytearrayarg.mjs - + testsuite/tests/jsffi/bytearrayarg.stdout - testsuite/tests/perf/should_run/all.T - testsuite/tests/rts/T18623/all.T - testsuite/tests/rts/all.T Changes: ===================================== .gitlab/ci.sh ===================================== @@ -265,6 +265,15 @@ function setup() { # testsuite driver! git config gc.auto 0 + # Some runners still choke at the perf note fetch step, which has to + # do with slow internet connection, see + # https://docs.gitlab.com/topics/git/troubleshooting_git/#error-stream-0-was-… + # for the http.postBuffer mitigation. It might seem + # counter-intuitive that "post buffer" helps with fetching, but git + # indeed issues post requests when fetching over https, it's a + # bidirectional negotiation with the remote. + git config http.postBuffer 52428800 + info "=====================================================" info "Toolchain versions" info "=====================================================" ===================================== .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] @@ -201,6 +203,7 @@ data FlavourTrans = | HostFullyStatic | ThreadSanitiser | UBSan + | ASan | NoSplitSections | BootNonmovingGc | TextWithSIMDUTF @@ -230,6 +233,7 @@ vanilla = BuildConfig , tablesNextToCode = True , threadSanitiser = False , ubsan = False + , asan = False , noSplitSections = False , validateNonmovingGc = False , textWithSIMDUTF = False @@ -283,8 +287,8 @@ llvm = vanilla { llvmBootstrap = True } tsan :: BuildConfig tsan = vanilla { threadSanitiser = True } -enableUBSan :: BuildConfig -enableUBSan = vanilla { withDwarf = True, ubsan = True } +enableUBSanASan :: BuildConfig +enableUBSanASan = vanilla { withDwarf = True, ubsan = True, asan = True } noTntc :: BuildConfig noTntc = vanilla { tablesNextToCode = False } @@ -381,6 +385,7 @@ 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 +1218,24 @@ 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 ===================================== @@ -3195,7 +3195,7 @@ "XZ_OPT": "-9" } }, - "nightly-x86_64-linux-fedora43-validate+debug_info+ubsan": { + "nightly-x86_64-linux-fedora43-validate+debug_info+ubsan+asan": { "after_script": [ ".gitlab/ci.sh save_cache", ".gitlab/ci.sh save_test_output", @@ -3206,7 +3206,7 @@ "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+ubsan+asan.tar.xz", "junit.xml", "unexpected-test-output.tar.gz" ], @@ -3248,14 +3248,15 @@ "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-validate+debug_info+ubsan", - "BUILD_FLAVOUR": "validate+debug_info+ubsan", - "CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check", + "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate+debug_info+ubsan+asan", + "BUILD_FLAVOUR": "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-validate+debug_info+ubsan", + "TEST_ENV": "x86_64-linux-fedora43-validate+debug_info+ubsan+asan", "UBSAN_OPTIONS": "suppressions=$CI_PROJECT_DIR/rts/.ubsan-suppressions", "XZ_OPT": "-9" } @@ -7346,7 +7347,7 @@ "TEST_ENV": "x86_64-linux-fedora43-validate+debug_info" } }, - "x86_64-linux-fedora43-validate+debug_info+ubsan": { + "x86_64-linux-fedora43-validate+debug_info+ubsan+asan": { "after_script": [ ".gitlab/ci.sh save_cache", ".gitlab/ci.sh save_test_output", @@ -7357,7 +7358,7 @@ "artifacts": { "expire_in": "2 weeks", "paths": [ - "ghc-x86_64-linux-fedora43-validate+debug_info+ubsan.tar.xz", + "ghc-x86_64-linux-fedora43-validate+debug_info+ubsan+asan.tar.xz", "junit.xml", "unexpected-test-output.tar.gz" ], @@ -7383,7 +7384,7 @@ ], "rules": [ { - "if": "((($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) && ($ONLY_JOBS =~ /.*\\bx86_64-linux-fedora43-validate\\+debug_info\\+ubsan\\+asan(\\s|$).*/)) || (($ONLY_JOBS == null) && ((($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\") && ($NIGHTLY == null)", "when": "on_success" } ], @@ -7399,14 +7400,15 @@ "x86_64-linux" ], "variables": { + "ASAN_OPTIONS": "detect_leaks=false:handle_segv=0:handle_sigfpe=0:verify_asan_link_order=false", "BIGNUM_BACKEND": "gmp", - "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate+debug_info+ubsan", - "BUILD_FLAVOUR": "validate+debug_info+ubsan", - "CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check", + "BIN_DIST_NAME": "ghc-x86_64-linux-fedora43-validate+debug_info+ubsan+asan", + "BUILD_FLAVOUR": "validate+debug_info+ubsan+asan", + "CONFIGURE_ARGS": "--with-intree-gmp --enable-strict-ghc-toolchain-check", "HADRIAN_ARGS": "--docs=none", "INSTALL_CONFIGURE_ARGS": "--enable-strict-ghc-toolchain-check", "RUNTEST_ARGS": "", - "TEST_ENV": "x86_64-linux-fedora43-validate+debug_info+ubsan", + "TEST_ENV": "x86_64-linux-fedora43-validate+debug_info+ubsan+asan", "UBSAN_OPTIONS": "suppressions=$CI_PROJECT_DIR/rts/.ubsan-suppressions" } }, ===================================== compiler/GHC/Builtin/Names.hs ===================================== @@ -222,12 +222,11 @@ basicKnownKeyNames -- Type representation types trModuleTyConName, trModuleDataConName, - trNameTyConName, trNameSDataConName, trNameDDataConName, + trNameSDataConName, trTyConTyConName, trTyConDataConName, -- Typeable typeableClassName, - typeRepTyConName, someTypeRepTyConName, someTypeRepDataConName, kindRepTyConName, @@ -237,13 +236,10 @@ basicKnownKeyNames kindRepFunDataConName, kindRepTYPEDataConName, kindRepTypeLitSDataConName, - kindRepTypeLitDDataConName, - typeLitSortTyConName, typeLitSymbolDataConName, typeLitNatDataConName, typeLitCharDataConName, typeRepIdName, - mkTrTypeName, mkTrConName, mkTrAppCheckedName, mkTrFunName, @@ -296,7 +292,7 @@ basicKnownKeyNames fmapName, -- Monad stuff - thenIOName, bindIOName, returnIOName, failIOName, bindMName, thenMName, + thenIOName, bindIOName, returnIOName, bindMName, thenMName, returnMName, joinMName, -- MonadFail @@ -409,26 +405,18 @@ basicKnownKeyNames naturalQuotName, naturalRemName, naturalAndName, - naturalAndNotName, naturalOrName, naturalXorName, naturalTestBitName, naturalBitName, naturalGcdName, naturalLcmName, - naturalLog2Name, - naturalLogBaseWordName, - naturalLogBaseName, - naturalPowModName, - naturalSizeInBaseName, bignatEqName, -- Float/Double integerToFloatName, integerToDoubleName, - naturalToFloatName, - naturalToDoubleName, rationalToFloatName, rationalToDoubleName, @@ -476,11 +464,9 @@ basicKnownKeyNames -- Generics , genClassName, gen1ClassName - , datatypeClassName, constructorClassName, selectorClassName -- Monad comprehensions , guardMName - , liftMName , mzipName -- GHCi Sandbox @@ -492,9 +478,6 @@ basicKnownKeyNames , staticPtrDataConName, staticPtrInfoDataConName , fromStaticPtrName - -- Fingerprint - , fingerprintDataConName - -- Custom type errors , errorMessageTypeErrorFamName , typeErrorTextDataConName @@ -517,12 +500,9 @@ basicKnownKeyNames genericTyConNames :: [Name] genericTyConNames = [ - v1TyConName, u1TyConName, par1TyConName, rec1TyConName, - k1TyConName, m1TyConName, sumTyConName, prodTyConName, - compTyConName, rTyConName, dTyConName, - cTyConName, sTyConName, rec0TyConName, - d1TyConName, c1TyConName, s1TyConName, - repTyConName, rep1TyConName, uRecTyConName, + v1TyConName, u1TyConName, par1TyConName, rec1TyConName, sumTyConName, + prodTyConName, compTyConName, rec0TyConName, d1TyConName, c1TyConName, + s1TyConName, repTyConName, rep1TyConName, uAddrTyConName, uCharTyConName, uDoubleTyConName, uFloatTyConName, uIntTyConName, uWordTyConName, prefixIDataConName, infixIDataConName, leftAssociativeDataConName, @@ -939,11 +919,8 @@ voidTyConName = tcQual gHC_INTERNAL_BASE (fsLit "Void") voidTyConKey -- Generics (types) v1TyConName, u1TyConName, par1TyConName, rec1TyConName, - k1TyConName, m1TyConName, sumTyConName, prodTyConName, - compTyConName, rTyConName, dTyConName, - cTyConName, sTyConName, rec0TyConName, - d1TyConName, c1TyConName, s1TyConName, - repTyConName, rep1TyConName, uRecTyConName, + sumTyConName, prodTyConName, compTyConName, rec0TyConName, d1TyConName, + c1TyConName, s1TyConName, repTyConName, rep1TyConName, uAddrTyConName, uCharTyConName, uDoubleTyConName, uFloatTyConName, uIntTyConName, uWordTyConName, prefixIDataConName, infixIDataConName, leftAssociativeDataConName, @@ -958,18 +935,11 @@ v1TyConName = tcQual gHC_INTERNAL_GENERICS (fsLit "V1") v1TyConKey u1TyConName = tcQual gHC_INTERNAL_GENERICS (fsLit "U1") u1TyConKey par1TyConName = tcQual gHC_INTERNAL_GENERICS (fsLit "Par1") par1TyConKey rec1TyConName = tcQual gHC_INTERNAL_GENERICS (fsLit "Rec1") rec1TyConKey -k1TyConName = tcQual gHC_INTERNAL_GENERICS (fsLit "K1") k1TyConKey -m1TyConName = tcQual gHC_INTERNAL_GENERICS (fsLit "M1") m1TyConKey sumTyConName = tcQual gHC_INTERNAL_GENERICS (fsLit ":+:") sumTyConKey prodTyConName = tcQual gHC_INTERNAL_GENERICS (fsLit ":*:") prodTyConKey compTyConName = tcQual gHC_INTERNAL_GENERICS (fsLit ":.:") compTyConKey -rTyConName = tcQual gHC_INTERNAL_GENERICS (fsLit "R") rTyConKey -dTyConName = tcQual gHC_INTERNAL_GENERICS (fsLit "D") dTyConKey -cTyConName = tcQual gHC_INTERNAL_GENERICS (fsLit "C") cTyConKey -sTyConName = tcQual gHC_INTERNAL_GENERICS (fsLit "S") sTyConKey - rec0TyConName = tcQual gHC_INTERNAL_GENERICS (fsLit "Rec0") rec0TyConKey d1TyConName = tcQual gHC_INTERNAL_GENERICS (fsLit "D1") d1TyConKey c1TyConName = tcQual gHC_INTERNAL_GENERICS (fsLit "C1") c1TyConKey @@ -978,7 +948,6 @@ s1TyConName = tcQual gHC_INTERNAL_GENERICS (fsLit "S1") s1TyConKey repTyConName = tcQual gHC_INTERNAL_GENERICS (fsLit "Rep") repTyConKey rep1TyConName = tcQual gHC_INTERNAL_GENERICS (fsLit "Rep1") rep1TyConKey -uRecTyConName = tcQual gHC_INTERNAL_GENERICS (fsLit "URec") uRecTyConKey uAddrTyConName = tcQual gHC_INTERNAL_GENERICS (fsLit "UAddr") uAddrTyConKey uCharTyConName = tcQual gHC_INTERNAL_GENERICS (fsLit "UChar") uCharTyConKey uDoubleTyConName = tcQual gHC_INTERNAL_GENERICS (fsLit "UDouble") uDoubleTyConKey @@ -1169,18 +1138,12 @@ integerFromNaturalName , naturalQuotName , naturalRemName , naturalAndName - , naturalAndNotName , naturalOrName , naturalXorName , naturalTestBitName , naturalBitName , naturalGcdName , naturalLcmName - , naturalLog2Name - , naturalLogBaseWordName - , naturalLogBaseName - , naturalPowModName - , naturalSizeInBaseName , bignatEqName , bignatCompareName , bignatCompareWordName @@ -1209,18 +1172,12 @@ naturalQuotRemName = bnnVarQual "naturalQuotRem#" naturalQuotRe naturalQuotName = bnnVarQual "naturalQuot" naturalQuotIdKey naturalRemName = bnnVarQual "naturalRem" naturalRemIdKey naturalAndName = bnnVarQual "naturalAnd" naturalAndIdKey -naturalAndNotName = bnnVarQual "naturalAndNot" naturalAndNotIdKey naturalOrName = bnnVarQual "naturalOr" naturalOrIdKey naturalXorName = bnnVarQual "naturalXor" naturalXorIdKey naturalTestBitName = bnnVarQual "naturalTestBit#" naturalTestBitIdKey naturalBitName = bnnVarQual "naturalBit#" naturalBitIdKey naturalGcdName = bnnVarQual "naturalGcd" naturalGcdIdKey naturalLcmName = bnnVarQual "naturalLcm" naturalLcmIdKey -naturalLog2Name = bnnVarQual "naturalLog2#" naturalLog2IdKey -naturalLogBaseWordName = bnnVarQual "naturalLogBaseWord#" naturalLogBaseWordIdKey -naturalLogBaseName = bnnVarQual "naturalLogBase#" naturalLogBaseIdKey -naturalPowModName = bnnVarQual "naturalPowMod" naturalPowModIdKey -naturalSizeInBaseName = bnnVarQual "naturalSizeInBase#" naturalSizeInBaseIdKey integerFromNaturalName = bniVarQual "integerFromNatural" integerFromNaturalIdKey integerToNaturalClampName = bniVarQual "integerToNaturalClamp" integerToNaturalClampIdKey @@ -1291,12 +1248,9 @@ realFloatClassName = clsQual gHC_INTERNAL_FLOAT (fsLit "RealFloat") realFloatCla -- other GHC.Internal.Float functions integerToFloatName, integerToDoubleName, - naturalToFloatName, naturalToDoubleName, rationalToFloatName, rationalToDoubleName :: Name integerToFloatName = varQual gHC_INTERNAL_FLOAT (fsLit "integerToFloat#") integerToFloatIdKey integerToDoubleName = varQual gHC_INTERNAL_FLOAT (fsLit "integerToDouble#") integerToDoubleIdKey -naturalToFloatName = varQual gHC_INTERNAL_FLOAT (fsLit "naturalToFloat#") naturalToFloatIdKey -naturalToDoubleName = varQual gHC_INTERNAL_FLOAT (fsLit "naturalToDouble#") naturalToDoubleIdKey rationalToFloatName = varQual gHC_INTERNAL_FLOAT (fsLit "rationalToFloat") rationalToFloatIdKey rationalToDoubleName = varQual gHC_INTERNAL_FLOAT (fsLit "rationalToDouble") rationalToDoubleIdKey @@ -1307,17 +1261,13 @@ ixClassName = clsQual gHC_INTERNAL_IX (fsLit "Ix") ixClassKey -- Typeable representation types trModuleTyConName , trModuleDataConName - , trNameTyConName , trNameSDataConName - , trNameDDataConName , trTyConTyConName , trTyConDataConName :: Name trModuleTyConName = tcQual gHC_TYPES (fsLit "Module") trModuleTyConKey trModuleDataConName = dcQual gHC_TYPES (fsLit "Module") trModuleDataConKey -trNameTyConName = tcQual gHC_TYPES (fsLit "TrName") trNameTyConKey trNameSDataConName = dcQual gHC_TYPES (fsLit "TrNameS") trNameSDataConKey -trNameDDataConName = dcQual gHC_TYPES (fsLit "TrNameD") trNameDDataConKey trTyConTyConName = tcQual gHC_TYPES (fsLit "TyCon") trTyConTyConKey trTyConDataConName = dcQual gHC_TYPES (fsLit "TyCon") trTyConDataConKey @@ -1328,7 +1278,6 @@ kindRepTyConName , kindRepFunDataConName , kindRepTYPEDataConName , kindRepTypeLitSDataConName - , kindRepTypeLitDDataConName :: Name kindRepTyConName = tcQual gHC_TYPES (fsLit "KindRep") kindRepTyConKey kindRepTyConAppDataConName = dcQual gHC_TYPES (fsLit "KindRepTyConApp") kindRepTyConAppDataConKey @@ -1337,24 +1286,19 @@ kindRepAppDataConName = dcQual gHC_TYPES (fsLit "KindRepApp") kindR kindRepFunDataConName = dcQual gHC_TYPES (fsLit "KindRepFun") kindRepFunDataConKey kindRepTYPEDataConName = dcQual gHC_TYPES (fsLit "KindRepTYPE") kindRepTYPEDataConKey kindRepTypeLitSDataConName = dcQual gHC_TYPES (fsLit "KindRepTypeLitS") kindRepTypeLitSDataConKey -kindRepTypeLitDDataConName = dcQual gHC_TYPES (fsLit "KindRepTypeLitD") kindRepTypeLitDDataConKey -typeLitSortTyConName - , typeLitSymbolDataConName +typeLitSymbolDataConName , typeLitNatDataConName , typeLitCharDataConName :: Name -typeLitSortTyConName = tcQual gHC_TYPES (fsLit "TypeLitSort") typeLitSortTyConKey typeLitSymbolDataConName = dcQual gHC_TYPES (fsLit "TypeLitSymbol") typeLitSymbolDataConKey typeLitNatDataConName = dcQual gHC_TYPES (fsLit "TypeLitNat") typeLitNatDataConKey typeLitCharDataConName = dcQual gHC_TYPES (fsLit "TypeLitChar") typeLitCharDataConKey -- Class Typeable, and functions for constructing `Typeable` dictionaries typeableClassName - , typeRepTyConName , someTypeRepTyConName , someTypeRepDataConName - , mkTrTypeName , mkTrConName , mkTrAppCheckedName , mkTrFunName @@ -1365,11 +1309,9 @@ typeableClassName , trGhcPrimModuleName :: Name typeableClassName = clsQual gHC_INTERNAL_TYPEABLE_INTERNAL (fsLit "Typeable") typeableClassKey -typeRepTyConName = tcQual gHC_INTERNAL_TYPEABLE_INTERNAL (fsLit "TypeRep") typeRepTyConKey someTypeRepTyConName = tcQual gHC_INTERNAL_TYPEABLE_INTERNAL (fsLit "SomeTypeRep") someTypeRepTyConKey someTypeRepDataConName = dcQual gHC_INTERNAL_TYPEABLE_INTERNAL (fsLit "SomeTypeRep") someTypeRepDataConKey typeRepIdName = varQual gHC_INTERNAL_TYPEABLE_INTERNAL (fsLit "typeRep#") typeRepIdKey -mkTrTypeName = varQual gHC_INTERNAL_TYPEABLE_INTERNAL (fsLit "mkTrType") mkTrTypeKey mkTrConName = varQual gHC_INTERNAL_TYPEABLE_INTERNAL (fsLit "mkTrCon") mkTrConKey mkTrAppCheckedName = varQual gHC_INTERNAL_TYPEABLE_INTERNAL (fsLit "mkTrAppChecked") mkTrAppCheckedKey mkTrFunName = varQual gHC_INTERNAL_TYPEABLE_INTERNAL (fsLit "mkTrFun") mkTrFunKey @@ -1494,15 +1436,10 @@ readClassName :: Name readClassName = clsQual gHC_INTERNAL_READ (fsLit "Read") readClassKey -- Classes Generic and Generic1, Datatype, Constructor and Selector -genClassName, gen1ClassName, datatypeClassName, constructorClassName, - selectorClassName :: Name +genClassName, gen1ClassName :: Name genClassName = clsQual gHC_INTERNAL_GENERICS (fsLit "Generic") genClassKey gen1ClassName = clsQual gHC_INTERNAL_GENERICS (fsLit "Generic1") gen1ClassKey -datatypeClassName = clsQual gHC_INTERNAL_GENERICS (fsLit "Datatype") datatypeClassKey -constructorClassName = clsQual gHC_INTERNAL_GENERICS (fsLit "Constructor") constructorClassKey -selectorClassName = clsQual gHC_INTERNAL_GENERICS (fsLit "Selector") selectorClassKey - genericClassNames :: [Name] genericClassNames = [genClassName, gen1ClassName] @@ -1513,13 +1450,12 @@ ghciStepIoMName = varQual gHC_INTERNAL_GHCI (fsLit "ghciStepIO") ghciStepIoMClas -- IO things ioTyConName, ioDataConName, - thenIOName, bindIOName, returnIOName, failIOName :: Name + thenIOName, bindIOName, returnIOName :: Name ioTyConName = tcQual gHC_TYPES (fsLit "IO") ioTyConKey ioDataConName = dcQual gHC_TYPES (fsLit "IO") ioDataConKey thenIOName = varQual gHC_INTERNAL_BASE (fsLit "thenIO") thenIOIdKey bindIOName = varQual gHC_INTERNAL_BASE (fsLit "bindIO") bindIOIdKey returnIOName = varQual gHC_INTERNAL_BASE (fsLit "returnIO") returnIOIdKey -failIOName = varQual gHC_INTERNAL_IO (fsLit "failIO") failIOIdKey -- IO things printName :: Name @@ -1564,9 +1500,8 @@ choiceAName = varQual gHC_INTERNAL_ARROW (fsLit "|||") choiceAIdKey loopAName = varQual gHC_INTERNAL_ARROW (fsLit "loop") loopAIdKey -- Monad comprehensions -guardMName, liftMName, mzipName :: Name +guardMName, mzipName :: Name guardMName = varQual gHC_INTERNAL_MONAD (fsLit "guard") guardMIdKey -liftMName = varQual gHC_INTERNAL_MONAD (fsLit "liftM") liftMIdKey mzipName = varQual gHC_INTERNAL_CONTROL_MONAD_ZIP (fsLit "mzip") mzipIdKey @@ -1654,10 +1589,6 @@ fromStaticPtrName :: Name fromStaticPtrName = varQual gHC_INTERNAL_STATICPTR (fsLit "fromStaticPtr") fromStaticPtrClassOpKey -fingerprintDataConName :: Name -fingerprintDataConName = - dcQual gHC_INTERNAL_FINGERPRINT_TYPE (fsLit "Fingerprint") fingerprintDataConKey - constPtrConName :: Name constPtrConName = tcQual gHC_INTERNAL_FOREIGN_C_CONSTPTR (fsLit "ConstPtr") constPtrTyConKey @@ -1753,15 +1684,10 @@ applicativeClassKey = mkPreludeClassUnique 34 foldableClassKey = mkPreludeClassUnique 35 traversableClassKey = mkPreludeClassUnique 36 -genClassKey, gen1ClassKey, datatypeClassKey, constructorClassKey, - selectorClassKey :: Unique +genClassKey, gen1ClassKey :: Unique genClassKey = mkPreludeClassUnique 37 gen1ClassKey = mkPreludeClassUnique 38 -datatypeClassKey = mkPreludeClassUnique 39 -constructorClassKey = mkPreludeClassUnique 40 -selectorClassKey = mkPreludeClassUnique 41 - -- KnownNat: see Note [KnownNat & KnownSymbol and EvLit] in GHC.Tc.Instance.Class knownNatClassNameKey :: Unique knownNatClassNameKey = mkPreludeClassUnique 42 @@ -1940,21 +1866,16 @@ pluginTyConKey, frontendPluginTyConKey :: Unique pluginTyConKey = mkPreludeTyConUnique 102 frontendPluginTyConKey = mkPreludeTyConUnique 103 -trTyConTyConKey, trModuleTyConKey, trNameTyConKey, - kindRepTyConKey, typeLitSortTyConKey :: Unique +trTyConTyConKey, trModuleTyConKey, + kindRepTyConKey :: Unique trTyConTyConKey = mkPreludeTyConUnique 104 trModuleTyConKey = mkPreludeTyConUnique 105 -trNameTyConKey = mkPreludeTyConUnique 106 kindRepTyConKey = mkPreludeTyConUnique 107 -typeLitSortTyConKey = mkPreludeTyConUnique 108 -- Generics (Unique keys) v1TyConKey, u1TyConKey, par1TyConKey, rec1TyConKey, - k1TyConKey, m1TyConKey, sumTyConKey, prodTyConKey, - compTyConKey, rTyConKey, dTyConKey, - cTyConKey, sTyConKey, rec0TyConKey, - d1TyConKey, c1TyConKey, s1TyConKey, - repTyConKey, rep1TyConKey, uRecTyConKey, + sumTyConKey, prodTyConKey, compTyConKey, rec0TyConKey, + d1TyConKey, c1TyConKey, s1TyConKey, repTyConKey, rep1TyConKey, uAddrTyConKey, uCharTyConKey, uDoubleTyConKey, uFloatTyConKey, uIntTyConKey, uWordTyConKey :: Unique @@ -1962,18 +1883,11 @@ v1TyConKey = mkPreludeTyConUnique 135 u1TyConKey = mkPreludeTyConUnique 136 par1TyConKey = mkPreludeTyConUnique 137 rec1TyConKey = mkPreludeTyConUnique 138 -k1TyConKey = mkPreludeTyConUnique 139 -m1TyConKey = mkPreludeTyConUnique 140 sumTyConKey = mkPreludeTyConUnique 141 prodTyConKey = mkPreludeTyConUnique 142 compTyConKey = mkPreludeTyConUnique 143 -rTyConKey = mkPreludeTyConUnique 144 -dTyConKey = mkPreludeTyConUnique 146 -cTyConKey = mkPreludeTyConUnique 147 -sTyConKey = mkPreludeTyConUnique 148 - rec0TyConKey = mkPreludeTyConUnique 149 d1TyConKey = mkPreludeTyConUnique 151 c1TyConKey = mkPreludeTyConUnique 152 @@ -1982,7 +1896,6 @@ s1TyConKey = mkPreludeTyConUnique 153 repTyConKey = mkPreludeTyConUnique 155 rep1TyConKey = mkPreludeTyConUnique 156 -uRecTyConKey = mkPreludeTyConUnique 157 uAddrTyConKey = mkPreludeTyConUnique 158 uCharTyConKey = mkPreludeTyConUnique 159 uDoubleTyConKey = mkPreludeTyConUnique 160 @@ -2026,8 +1939,7 @@ callStackTyConKey :: Unique callStackTyConKey = mkPreludeTyConUnique 191 -- Typeables -typeRepTyConKey, someTypeRepTyConKey, someTypeRepDataConKey :: Unique -typeRepTyConKey = mkPreludeTyConUnique 192 +someTypeRepTyConKey, someTypeRepDataConKey :: Unique someTypeRepTyConKey = mkPreludeTyConUnique 193 someTypeRepDataConKey = mkPreludeTyConUnique 194 @@ -2159,19 +2071,15 @@ staticPtrDataConKey = mkPreludeDataConUnique 33 staticPtrInfoDataConKey :: Unique staticPtrInfoDataConKey = mkPreludeDataConUnique 34 -fingerprintDataConKey :: Unique -fingerprintDataConKey = mkPreludeDataConUnique 35 - srcLocDataConKey :: Unique srcLocDataConKey = mkPreludeDataConUnique 37 trTyConDataConKey, trModuleDataConKey, - trNameSDataConKey, trNameDDataConKey, + trNameSDataConKey, trGhcPrimModuleKey :: Unique trTyConDataConKey = mkPreludeDataConUnique 41 trModuleDataConKey = mkPreludeDataConUnique 43 trNameSDataConKey = mkPreludeDataConUnique 45 -trNameDDataConKey = mkPreludeDataConUnique 46 trGhcPrimModuleKey = mkPreludeDataConUnique 47 typeErrorTextDataConKey, @@ -2246,7 +2154,7 @@ vecElemDataConKeys = map mkPreludeDataConUnique [96..105] -- Typeable things kindRepTyConAppDataConKey, kindRepVarDataConKey, kindRepAppDataConKey, kindRepFunDataConKey, kindRepTYPEDataConKey, - kindRepTypeLitSDataConKey, kindRepTypeLitDDataConKey + kindRepTypeLitSDataConKey :: Unique kindRepTyConAppDataConKey = mkPreludeDataConUnique 106 kindRepVarDataConKey = mkPreludeDataConUnique 107 @@ -2254,7 +2162,6 @@ kindRepAppDataConKey = mkPreludeDataConUnique 108 kindRepFunDataConKey = mkPreludeDataConUnique 109 kindRepTYPEDataConKey = mkPreludeDataConUnique 110 kindRepTypeLitSDataConKey = mkPreludeDataConUnique 111 -kindRepTypeLitDDataConKey = mkPreludeDataConUnique 112 typeLitSymbolDataConKey, typeLitNatDataConKey, typeLitCharDataConKey :: Unique typeLitSymbolDataConKey = mkPreludeDataConUnique 113 @@ -2342,7 +2249,7 @@ cstringLengthIdKey = mkPreludeMiscIdUnique 28 concatIdKey, filterIdKey, zipIdKey, bindIOIdKey, returnIOIdKey, newStablePtrIdKey, - printIdKey, failIOIdKey, nullAddrIdKey, voidArgIdKey, + printIdKey, nullAddrIdKey, voidArgIdKey, otherwiseIdKey, assertIdKey :: Unique concatIdKey = mkPreludeMiscIdUnique 31 filterIdKey = mkPreludeMiscIdUnique 32 @@ -2351,7 +2258,6 @@ bindIOIdKey = mkPreludeMiscIdUnique 34 returnIOIdKey = mkPreludeMiscIdUnique 35 newStablePtrIdKey = mkPreludeMiscIdUnique 36 printIdKey = mkPreludeMiscIdUnique 37 -failIOIdKey = mkPreludeMiscIdUnique 38 nullAddrIdKey = mkPreludeMiscIdUnique 39 voidArgIdKey = mkPreludeMiscIdUnique 40 otherwiseIdKey = mkPreludeMiscIdUnique 43 @@ -2390,11 +2296,9 @@ considerAccessibleIdKey = mkPreludeMiscIdUnique 125 noinlineIdKey = mkPreludeMiscIdUnique 126 noinlineConstraintIdKey = mkPreludeMiscIdUnique 127 -integerToFloatIdKey, integerToDoubleIdKey, naturalToFloatIdKey, naturalToDoubleIdKey :: Unique +integerToFloatIdKey, integerToDoubleIdKey :: Unique integerToFloatIdKey = mkPreludeMiscIdUnique 128 integerToDoubleIdKey = mkPreludeMiscIdUnique 129 -naturalToFloatIdKey = mkPreludeMiscIdUnique 130 -naturalToDoubleIdKey = mkPreludeMiscIdUnique 131 rationalToFloatIdKey, rationalToDoubleIdKey :: Unique rationalToFloatIdKey = mkPreludeMiscIdUnique 132 @@ -2472,9 +2376,8 @@ toIntegerClassOpKey = mkPreludeMiscIdUnique 192 toRationalClassOpKey = mkPreludeMiscIdUnique 193 -- Monad comprehensions -guardMIdKey, liftMIdKey, mzipIdKey :: Unique +guardMIdKey, mzipIdKey :: Unique guardMIdKey = mkPreludeMiscIdUnique 194 -liftMIdKey = mkPreludeMiscIdUnique 195 mzipIdKey = mkPreludeMiscIdUnique 196 -- GHCi @@ -2497,7 +2400,6 @@ proxyHashKey = mkPreludeMiscIdUnique 502 -- Used to make `Typeable` dictionaries mkTyConKey - , mkTrTypeKey , mkTrConKey , mkTrAppCheckedKey , mkTrFunKey @@ -2507,7 +2409,6 @@ mkTyConKey , typeRepIdKey :: Unique mkTyConKey = mkPreludeMiscIdUnique 503 -mkTrTypeKey = mkPreludeMiscIdUnique 504 mkTrConKey = mkPreludeMiscIdUnique 505 mkTrAppCheckedKey = mkPreludeMiscIdUnique 506 typeNatTypeRepKey = mkPreludeMiscIdUnique 507 @@ -2620,18 +2521,12 @@ integerFromNaturalIdKey , naturalQuotIdKey , naturalRemIdKey , naturalAndIdKey - , naturalAndNotIdKey , naturalOrIdKey , naturalXorIdKey , naturalTestBitIdKey , naturalBitIdKey , naturalGcdIdKey , naturalLcmIdKey - , naturalLog2IdKey - , naturalLogBaseWordIdKey - , naturalLogBaseIdKey - , naturalPowModIdKey - , naturalSizeInBaseIdKey , bignatEqIdKey , bignatCompareIdKey , bignatCompareWordIdKey @@ -2686,18 +2581,12 @@ naturalQuotRemIdKey = mkPreludeMiscIdUnique 669 naturalQuotIdKey = mkPreludeMiscIdUnique 670 naturalRemIdKey = mkPreludeMiscIdUnique 671 naturalAndIdKey = mkPreludeMiscIdUnique 672 -naturalAndNotIdKey = mkPreludeMiscIdUnique 673 naturalOrIdKey = mkPreludeMiscIdUnique 674 naturalXorIdKey = mkPreludeMiscIdUnique 675 naturalTestBitIdKey = mkPreludeMiscIdUnique 676 naturalBitIdKey = mkPreludeMiscIdUnique 677 naturalGcdIdKey = mkPreludeMiscIdUnique 678 naturalLcmIdKey = mkPreludeMiscIdUnique 679 -naturalLog2IdKey = mkPreludeMiscIdUnique 680 -naturalLogBaseWordIdKey = mkPreludeMiscIdUnique 681 -naturalLogBaseIdKey = mkPreludeMiscIdUnique 682 -naturalPowModIdKey = mkPreludeMiscIdUnique 683 -naturalSizeInBaseIdKey = mkPreludeMiscIdUnique 684 bignatEqIdKey = mkPreludeMiscIdUnique 691 bignatCompareIdKey = mkPreludeMiscIdUnique 692 ===================================== compiler/GHC/HsToCore/Foreign/Wasm.hs ===================================== @@ -224,6 +224,25 @@ especially since leaving all the boxing/unboxing business to C unifies the implementation of JSFFI imports and exports (rts_mkJSVal/rts_getJSVal). +We don't support unboxed FFI types like Int# etc. But we do support +one kind of unlifted FFI type for JSFFI import arguments: +ByteArray#/MutableByteArray#. The semantics is the same in C: the +pointer to the ByteArray# payload is passed instead of the ByteArray# +closure itself. This allows efficient zero-copy data exchange between +Haskell and JavaScript using unpinned ByteArray#, and the following +conditions must be met: + +- The JSFFI import itself must be a sync import marked as unsafe +- The JavaScript code must not re-enter Haskell when a ByteArray# is + passed as argument + +There's no magic in the handling of ByteArray#/MutableByteArray# +arguments. When generating C stub, we treat them like Ptr that points +to the payload, just without the rts_getPtr() unboxing call. After +lowering to C import, the backend takes care of adding the offset, see +add_shim in GHC.StgToCmm.Foreign and +Note [Unlifted boxed arguments to foreign calls]. + Now, each sync import calls a generated C function with a unique symbol. The C function uses rts_get* to unbox the arguments, call into JavaScript, then boxes the result with rts_mk* and returns it to @@ -517,8 +536,9 @@ importCStub sync cfun_name arg_tys res_ty js_src = CStub c_doc [] [] cfun_ret | res_ty `eqType` unitTy = cfun_call_import <> semi | otherwise = text "return" <+> cfun_call_import <> semi - cfun_make_arg arg_ty arg_val = - text ("rts_get" ++ ffiType arg_ty) <> parens arg_val + cfun_make_arg arg_ty arg_val + | isByteArrayPrimTy arg_ty = arg_val + | otherwise = text ("rts_get" ++ ffiType arg_ty) <> parens arg_val cfun_make_ret ret_val | res_ty `eqType` unitTy = ret_val | otherwise = @@ -543,7 +563,11 @@ importCStub sync cfun_name arg_tys res_ty js_src = CStub c_doc [] [] | res_ty `eqType` unitTy = text "void" | otherwise = text "HaskellObj" cfun_arg_list = - [text "HaskellObj" <+> char 'a' <> int n | n <- [1 .. length arg_tys]] + [ text (if isByteArrayPrimTy arg_ty then "HsPtr" else "HaskellObj") + <+> char 'a' + <> int n + | (arg_ty, n) <- zip arg_tys [1 ..] + ] cfun_args = case cfun_arg_list of [] -> text "void" _ -> hsep $ punctuate comma cfun_arg_list @@ -746,8 +770,18 @@ lookupGhcInternalTyCon m t = do n <- lookupOrig (mkGhcInternalModule m) (mkTcOcc t) dsLookupTyCon n +isByteArrayPrimTy :: Type -> Bool +isByteArrayPrimTy ty + | Just tc <- tyConAppTyCon_maybe ty, + tc == byteArrayPrimTyCon || tc == mutableByteArrayPrimTyCon = + True + | otherwise = + False + ffiType :: Type -> String -ffiType = occNameString . getOccName . fst . splitTyConApp +ffiType ty + | isByteArrayPrimTy ty = "Ptr" + | otherwise = occNameString $ getOccName $ tyConAppTyCon ty commonCDecls :: SDoc commonCDecls = ===================================== compiler/GHC/Parser/String.hs ===================================== @@ -19,6 +19,7 @@ import Data.Char (chr, ord) import qualified Data.Foldable1 as Foldable1 import qualified Data.List.NonEmpty as NonEmpty import Data.Maybe (listToMaybe, mapMaybe) +import GHC.Data.OrdList (fromOL, nilOL, snocOL) import GHC.Data.StringBuffer (StringBuffer) import qualified GHC.Data.StringBuffer as StringBuffer import GHC.Parser.CharClass ( @@ -167,16 +168,16 @@ collapseGaps = go [] -> panic "gap unexpectedly ended" resolveEscapes :: HasChar c => [c] -> Either (c, LexErr) [c] -resolveEscapes = go dlistEmpty +resolveEscapes = go nilOL where go !acc = \case - [] -> pure $ dlistToList acc + [] -> pure $ fromOL acc Char '\\' : Char '&' : cs -> go acc cs backslash@(Char '\\') : cs -> case resolveEscapeChar cs of - Right (esc, cs') -> go (acc `dlistSnoc` setChar esc backslash) cs' + Right (esc, cs') -> go (acc `snocOL` setChar esc backslash) cs' Left (c, e) -> Left (c, e) - c : cs -> go (acc `dlistSnoc` c) cs + c : cs -> go (acc `snocOL` c) cs -- ----------------------------------------------------------------------------- -- Escape characters @@ -420,17 +421,3 @@ It's more precisely defined with the following algorithm: * Lines with only whitespace characters 3. Calculate the longest prefix of whitespace shared by all lines in the remaining list -} - --- ----------------------------------------------------------------------------- --- DList - -newtype DList a = DList ([a] -> [a]) - -dlistEmpty :: DList a -dlistEmpty = DList id - -dlistToList :: DList a -> [a] -dlistToList (DList f) = f [] - -dlistSnoc :: DList a -> a -> DList a -dlistSnoc (DList f) x = DList (f . (x :)) ===================================== compiler/GHC/StgToCmm/InfoTableProv.hs ===================================== @@ -11,6 +11,7 @@ import GHC.IO (unsafePerformIO) #endif import Data.Char +import Data.Foldable import GHC.Prelude import GHC.Platform import GHC.Types.SrcLoc (pprUserRealSpan, srcSpanFile) @@ -18,6 +19,7 @@ import GHC.Types.Unique.DSM import GHC.Unit.Module import GHC.Utils.Outputable import GHC.Data.FastString (fastStringToShortText, unpackFS, LexicalFastString(..)) +import GHC.Data.OrdList (OrdList, nilOL, snocOL) import GHC.Cmm import GHC.Cmm.CLabel @@ -286,7 +288,7 @@ data CgInfoProvEnt = CgInfoProvEnt , ipeSrcSpan :: !StrTabOffset } -data StringTable = StringTable { stStrings :: DList ShortText +data StringTable = StringTable { stStrings :: !(OrdList ShortText) , stLength :: !Int , stLookup :: !(M.Map ShortText StrTabOffset) } @@ -295,7 +297,7 @@ type StrTabOffset = Word32 emptyStringTable :: StringTable emptyStringTable = - StringTable { stStrings = emptyDList + StringTable { stStrings = nilOL , stLength = 0 , stLookup = M.empty } @@ -303,7 +305,7 @@ emptyStringTable = getStringTableStrings :: StringTable -> BS.ByteString getStringTableStrings st = BSL.toStrict $ BSB.toLazyByteString - $ foldMap f $ dlistToList (stStrings st) + $ foldMap' f $ stStrings st where f x = BSB.shortByteString (ST.contents x) `mappend` BSB.word8 0 @@ -312,7 +314,7 @@ lookupStringTable str = state $ \st -> case M.lookup str (stLookup st) of Just off -> (off, st) Nothing -> - let !st' = st { stStrings = stStrings st `snoc` str + let !st' = st { stStrings = stStrings st `snocOL` str , stLength = stLength st + ST.byteLength str + 1 , stLookup = M.insert str res (stLookup st) } @@ -359,14 +361,3 @@ foreign import ccall unsafe "ZSTD_compressBound" defaultCompressionLevel :: Int defaultCompressionLevel = 3 - -newtype DList a = DList ([a] -> [a]) - -emptyDList :: DList a -emptyDList = DList id - -snoc :: DList a -> a -> DList a -snoc (DList f) x = DList (f . (x:)) - -dlistToList :: DList a -> [a] -dlistToList (DList f) = f [] ===================================== docs/users_guide/wasm.rst ===================================== @@ -265,7 +265,7 @@ backend’s JavaScript FFI, which we’ll now abbreviate as JSFFI. Marshalable types and ``JSVal`` ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -JSFFI supports all boxed marshalable foreign types in C FFI: +JSFFI supports all lifted marshalable foreign types in C FFI: - ``Bool`` - ``Char`` @@ -298,8 +298,14 @@ types in JSFFI. Some caveats to keep in mind: results in type errors, so keep this in mind. As for ``Int`` / ``Word``, they are 32-bit since the GHC wasm backend is based on ``wasm32`` . -- JSFFI doesn’t support unboxed foreign types like ``Int#``, - ``ByteArray#``, etc, even when ``UnliftedFFITypes`` is enabled. +- JSFFI doesn’t support unboxed foreign types like ``Int#``, even + when ``UnliftedFFITypes`` is enabled. The only supported unlifted + types are ``ByteArray#`` and ``MutableByteArray#``, they may only + be used as JSFFI import argument types, with the same semantics in + C FFI: the pointer to the payload is passed to JavaScript. Be + careful and avoid calling back into Haskell in such cases, + otherwise GC may occur and the pointer may be invalidated if it's + unpinned! In addition to the above types, JSFFI supports the ``JSVal`` type and its ``newtype``\ s as argument/result types. ``JSVal`` is defined in ===================================== 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> @@ -249,10 +253,6 @@ The supported transformers are listed below: <tr> <td><code>profiled_ghc</code></td> <td>Build the GHC executable with cost-centre profiling support. - It is recommended that you use this in conjunction with `no_dynamic_ghc` since - GHC does not support loading of profiled libraries with the - dynamic linker. You should use a flavour that builds profiling libs and rts, - i.e. not <code>quick</code>. <br> This flag adds cost centres with the -fprof-late flag.</td> </tr> <tr> @@ -274,6 +274,10 @@ The supported transformers are listed below: <td><code>text_simdutf</code></td> <td>Enable building the <code>text</code> package with <code>simdutf</code> support.</td> </tr> + <tr> + <td><code>with_profiled_libs</code></td> + <td>Enables building of stage1+ libraries and the RTS in profiled build ways (the opposite of <code>no_profiled_libs</code>).</td> + </tr> <tr> <td><code>no_profiled_libs</code></td> <td>Disables building of libraries in profiled build ways.</td> ===================================== hadrian/src/Flavour.hs ===================================== @@ -8,6 +8,7 @@ module Flavour , splitSections , enableThreadSanitizer , enableUBSan + , enableASan , enableLateCCS , enableHashUnitIds , enableDebugInfo, enableTickyGhc @@ -15,6 +16,7 @@ module Flavour , enableProfiledGhc , disableDynamicGhcPrograms , disableDynamicLibs + , enableProfiledLibs , disableProfiledLibs , enableLinting , enableHaddock @@ -56,12 +58,14 @@ 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 , "no_dynamic_libs" =: disableDynamicLibs , "native_bignum" =: useNativeBignum , "text_simdutf" =: enableTextWithSIMDUTF + , "with_profiled_libs" =: enableProfiledLibs , "no_profiled_libs" =: disableProfiledLibs , "omit_pragmas" =: omitPragmas , "ipe" =: enableIPE @@ -169,6 +173,7 @@ enableDebugInfo :: Flavour -> Flavour enableDebugInfo = addArgs $ notStage0 ? mconcat [ builder (Ghc CompileHs) ? pure ["-g3"] , builder (Ghc CompileCWithGhc) ? pure ["-optc-g3"] + , builder (Ghc CompileCppWithGhc) ? pure ["-optcxx-g3"] , builder (Cc CompileC) ? arg "-g3" , builder (Cabal Setup) ? arg "--disable-library-stripping" , builder (Cabal Setup) ? arg "--disable-executable-stripping" @@ -303,33 +308,51 @@ 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" --- | Build the GHC executable with profiling enabled in stages 2 and later. It --- is also recommended that you use this with @'dynamicGhcPrograms' = False@ --- since GHC does not support loading of profiled libraries with the --- dynamically-linker. +-- | Build the GHC executable with profiling enabled in stages 2 and +-- later. enableProfiledGhc :: Flavour -> Flavour enableProfiledGhc flavour = - enableLateCCS flavour - { rtsWays = do - ws <- rtsWays flavour - mconcat - [ pure ws - , buildingCompilerStage' (>= Stage2) ? pure (foldMap profiled_ways ws) - ] - , libraryWays = mconcat - [ libraryWays flavour - , buildingCompilerStage' (>= Stage2) ? pure (Set.singleton profiling) - ] - , ghcProfiled = (>= Stage2) - } - where - profiled_ways w - | wayUnit Dynamic w = Set.empty - | otherwise = Set.singleton (w <> profiling) + enableLateCCS $ enableProfiledLibs flavour { ghcProfiled = (>= Stage2) } -- | Disable 'dynamicGhcPrograms'. disableDynamicGhcPrograms :: Flavour -> Flavour @@ -346,6 +369,20 @@ disableDynamicLibs flavour = prune :: Ways -> Ways prune = fmap $ Set.filter (not . wayUnit Dynamic) +-- | Build libraries and the RTS in profiled ways (opposite of +-- 'disableProfiledLibs'). +enableProfiledLibs :: Flavour -> Flavour +enableProfiledLibs flavour = + flavour + { libraryWays = addProfilingWays $ libraryWays flavour, + rtsWays = addProfilingWays $ rtsWays flavour + } + where + addProfilingWays :: Ways -> Ways + addProfilingWays ways = do + ws <- ways + buildProfiled <- notStage0 + pure $ if buildProfiled then ws <> Set.map (<> profiling) ws else ws -- | Don't build libraries in profiled 'Way's. disableProfiledLibs :: Flavour -> Flavour ===================================== hadrian/src/Settings/Packages.hs ===================================== @@ -351,7 +351,7 @@ rtsPackageArgs = package rts ? do , Debug `wayUnit` way ? pure [ "-DDEBUG" , "-fno-omit-frame-pointer" , "-g3" - , "-O0" ] + , "-Og" ] -- Set the namespace for the rts fs functions , arg $ "-DFS_NAMESPACE=rts" ===================================== libraries/ghc-internal/src/GHC/Internal/IO/Handle.hs ===================================== @@ -480,7 +480,7 @@ hIsOpen handle = SemiClosedHandle -> return False _ -> return True --- | @'hIsOpen' hdl@ returns whether the handle is closed. +-- | @'hIsClosed' hdl@ returns whether the handle is closed. -- If the 'haType' of @hdl@ is 'ClosedHandle' this returns 'True' -- and 'False' otherwise. hIsClosed :: Handle -> IO Bool ===================================== 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/linker/InitFini.c ===================================== @@ -75,7 +75,7 @@ static void sortInitFiniList(struct InitFiniList **slist, enum SortOrder order) while (*last != NULL && (*last)->next != NULL) { struct InitFiniList *s0 = *last; struct InitFiniList *s1 = s0->next; - bool flip; + bool flip = false; switch (order) { case INCREASING: flip = s0->priority > s1->priority; break; case DECREASING: flip = s0->priority < s1->priority; break; ===================================== 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/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); } ===================================== rts/sm/Sanity.c ===================================== @@ -692,7 +692,7 @@ checkCompactObjects(bdescr *bd) ASSERT((W_)str == (W_)block + sizeof(StgCompactNFDataBlock)); StgWord totalW = 0; - StgCompactNFDataBlock *last; + StgCompactNFDataBlock *last = block; for ( ; block ; block = block->next) { last = block; ASSERT(block->owner == str); ===================================== 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/jsffi/all.T ===================================== @@ -25,4 +25,6 @@ test('jsffion', [], compile_and_run, ['-optl-Wl,--export=main']) test('jsffisleep', [], compile_and_run, ['-optl-Wl,--export=testWouldBlock,--export=testLazySleep,--export=testThreadDelay,--export=testInterruptingSleep']) +test('bytearrayarg', [], compile_and_run, ['-optl-Wl,--export=main']) + test('textconv', [], compile_and_run, ['-optl-Wl,--export=main']) ===================================== testsuite/tests/jsffi/bytearrayarg.hs ===================================== @@ -0,0 +1,39 @@ +{-# LANGUAGE MagicHash #-} +{-# LANGUAGE UnboxedTuples #-} +{-# LANGUAGE UnliftedFFITypes #-} + +module Test where + +import GHC.Exts +import GHC.IO +import GHC.Word (Word8(W8#)) + +foreign import javascript unsafe "(() => { const u8 = new Uint8Array(__exports.memory.buffer, $1, 4); return (u8[0] === 0x12 && u8[1] === 0x34 && u8[2] === 0x56 && u8[3] === 0x78) ? 1 : 0; })()" + js_check_mba :: MutableByteArray# RealWorld -> IO Int + +foreign import javascript unsafe "(() => { const u8 = new Uint8Array(__exports.memory.buffer, $1, 4); return (u8[0] === 0x12 && u8[1] === 0x34 && u8[2] === 0x56 && u8[3] === 0x78) ? 1 : 0; })()" + js_check_ba :: ByteArray# -> IO Int + +foreign export javascript "main" + main :: IO () + +main :: IO () +main = + IO $ \s0 -> + case newPinnedByteArray# 4# s0 of + (# s1, mba# #) -> + case (0x12 :: Word8) of { W8# b0# -> + case (0x34 :: Word8) of { W8# b1# -> + case (0x56 :: Word8) of { W8# b2# -> + case (0x78 :: Word8) of { W8# b3# -> + let s2 = writeWord8Array# mba# 0# b0# s1 + s3 = writeWord8Array# mba# 1# b1# s2 + s4 = writeWord8Array# mba# 2# b2# s3 + s5 = writeWord8Array# mba# 3# b3# s4 + in case unIO (js_check_mba mba#) s5 of + (# s6, ok_mba #) -> case unsafeFreezeByteArray# mba# s6 of + (# s7, ba# #) -> case unIO (js_check_ba ba#) s7 of + (# s8, ok_ba #) -> case unIO (print ok_mba) s8 of + (# s9, _ #) -> case unIO (print ok_ba) s9 of + (# s10, _ #) -> (# s10, () #) + }}}} ===================================== testsuite/tests/jsffi/bytearrayarg.mjs ===================================== @@ -0,0 +1,4 @@ +export default async (__exports) => { + await __exports.main(); + process.exit(); +} ===================================== testsuite/tests/jsffi/bytearrayarg.stdout ===================================== @@ -0,0 +1,2 @@ +1 +1 ===================================== testsuite/tests/perf/should_run/all.T ===================================== @@ -420,6 +420,7 @@ test('T17949', [collect_stats('bytes allocated', 1), only_ways(['normal'])], com test('ByteCodeAsm', [ extra_run_opts('"' + config.libdir + '"') , js_broken(22261) + , when(arch('wasm32'), run_timeout_multiplier(10)) , collect_stats('bytes allocated', 10), ], compile_and_run, ===================================== 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/26339689beceb2a3483e2777341f25… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/26339689beceb2a3483e2777341f25… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/spj-apporv-Oct24] wrap fromListN with a generated src span
by Apoorv Ingle (＠ani) 22 Dec '25

22 Dec '25

Apoorv Ingle pushed to branch wip/spj-apporv-Oct24 at Glasgow Haskell Compiler / GHC Commits: 40a3603f by Apoorv Ingle at 2025-12-21T23:25:52-06:00 wrap fromListN with a generated src span - - - - - 1 changed file: - compiler/GHC/Rename/Expr.hs Changes: ===================================== compiler/GHC/Rename/Expr.hs ===================================== @@ -502,11 +502,11 @@ rnExpr (ExplicitList _ exps) then return (ExplicitList noExtField exps', fvs) else do { (from_list_n_name, fvs') <- lookupSyntaxName fromListNName - ; loc <- getSrcSpanM -- See Note [Source locations for implicit function calls] + --; loc <- getSrcSpanM -- See Note [Source locations for implicit function calls] ; let rn_list = ExplicitList noExtField exps' lit_n = mkIntegralLit (length exps) hs_lit = genHsIntegralLit lit_n - exp_list = genHsApps' (L (noAnnSrcSpan loc) from_list_n_name) [hs_lit, wrapGenSpan rn_list] + exp_list = genHsApps' (wrapGenSpan from_list_n_name) [hs_lit, wrapGenSpan rn_list] ; return ( mkExpandedExpr rn_list exp_list , fvs `plusFV` fvs') } } View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/40a3603f392fb50b057dc07ba56a4e1… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/40a3603f392fb50b057dc07ba56a4e1… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/spj-apporv-Oct24] 58 commits: Fix syntax error in gadt_syntax.rst
by Apoorv Ingle (＠ani) 22 Dec '25

22 Dec '25

Apoorv Ingle pushed to branch wip/spj-apporv-Oct24 at Glasgow Haskell Compiler / GHC Commits: 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. - - - - - e9f68841 by Apoorv Ingle at 2025-12-21T13:14:45-06:00 This commit: - Streamlines implementations of `tcExpr` and `tcXExpr` to work on `XExpr` Calls `setInGeneratedCode` everytime the typechecker goes over an `XExpr` - Kills `VACtxt` (and its associated VAExpansion and VACall) datatype, it is subsumed by simply a SrcSpan. - Kills the function `addHeadCtxt` as it is now mearly setting a location - The function `tcValArgs` does its own argument number management - Makes `splitHsApps` not look through `XExpr` - `tcExprSigma` is called if the head of the expression after calling `splitHsApps` turns out to be an `XExpr` - Removes location information from `OrigPat` payload - Removes special case of tcBody from `tcLambdaMatches` - Removes special case of `dsExpr` for `ExpandedThingTc` - Moves `setQLInstLevel` inside `tcInstFun` - Rename `HsThingRn` to `SrcCodeCtxt` - Kills `tcl_in_gen_code` and `tcl_err_ctxt`. It is subsumed by `ErrCtxtStack` - Kills `ExpectedFunTyOrig`. It is subsumed by `CtOrigin` - Fixes `CtOrigin` for `HsProjection` case in `exprCtOrigin`. It was previously assigned to be `SectionOrigin`. It is now just the expression - Adds a new `CtOrigin.ExpansionOrigin` for storing the original syntax - Adds a new `CtOrigin.ExpectedTySyntax` as a replacement for `ExpectedTySyntaxOp`. Cannot kill the former yet because of `ApplicativeDo` - Renames `tcMonoExpr` -> `tcMonoLExpr`, `tcMonoExprNC` -> `tcMonoLExpr` - Renames `EValArg`, `EValArgQL` fields: `ea_ctxt` -> `ea_loc_span` and `eaql_ctx` -> `eaql_loc_span` Notes added [Error Context Stack] Notes updated Note [Expanding HsDo with XXExprGhcRn] ------------------------- Metric Decrease: T9020 ------------------------- - - - - - 7d4d3674 by Apoorv Ingle at 2025-12-21T13:15:02-06:00 - kill PopErrCtxt - Pass in the location of the head of the application chain to `addArgCtxt` to print better error messages. Make `addArgCtxt` print in the nth argument if the head of the application chain is user located. - match context with record updates dont get added in error context - Do not use HsPar in Last statement - simplify addArgCtxt and push setSrcSpan inside addLExprCtxt. Make sure addExprCtxt is not called by itself - fun_orig in tcApp depends on the SrcSpan of the head of the application chain (similar to addArgCtxt) - rename fun_ctxt to fun_lspan, fun_orig passed in tcInstFun to default to app chain head if its user located, fall back to srcCodeOrigin if it's a generated location - fix quickLookArg function to blame the correct application chain head. The arguments application chain head should be blamed, not the original head when we quick look arg - Make sure only expression wrapped around generated src span are ignored while adding them to the error context stack - In `addArgCtxt` the nth argument's err ctxt adds a generated error ctxt if the argument is XExpr - - - - - 25c24278 by Apoorv Ingle at 2025-12-21T13:16:46-06:00 - make sure landmark error contexts are always printed. accept some testcases - fix overloaded list error message. Expanded Expressions head `listFromN` should be wrapped in a generated source span (Wrinkle) This may make some HIE tests to fail, but HIE should fix the behaviour there. - Fix notes - fix for MonadFailErrors test case. OrigPat now also stores the statement to make the error message resonable - - - - - e12bdd05 by Apoorv Ingle at 2025-12-21T13:17:36-06:00 - `getDeepSubsumptionFlag_DataConHead` performs a non-trivial traversal if the expression passed to it is complex. This traversal is necessary if the head of the function is an `XExpr` and `splitHsApps` does not look through them - The deepsubsumption flag is stored in EVAlArgQL to reduce the need to call `getDeepSubsumptionFlag_DataConHead` - `getDeepSubsumptionFlag_DataConHead` is called in `tcExprSigma` and `tcInferAppHead` to reduce AST traversals - refactor building CtOrigin before instantiations as a function. It does state lookup only if needed. - In tcDoStmts, we lose the location of the first statement. It is needed for getting the pattern match check right Further, do not call addErrCtxt on it, the tcMonoLExpr will do it for us. - during QL arg's function head instantiation use more a more accurate location for arg when the application chain is null - - - - - 1343dd78 by Apoorv Ingle at 2025-12-21T13:17:51-06:00 do not add error context in tcExprSigma for XExpr and do not setQLInstLevel before tcInstFun - - - - - d019dba2 by Apoorv Ingle at 2025-12-21T13:17:51-06:00 wrap expanded records in an XExpr. Accept test cases - - - - - 4e0b3ea3 by Apoorv Ingle at 2025-12-21T13:17:51-06:00 in QuicklookArg, wrap the inferAppHead_maybe with an optional error context update. If the head is a XExpr, we need to flip the state to generated - - - - - e9e6a3e2 by Apoorv Ingle at 2025-12-21T19:33:31-06:00 ignore patterns wrapped around generated src span while type checking patterns - - - - - c4b2f17a by Apoorv Ingle at 2025-12-21T21:43:47-06:00 fixing some more error messages - - - - - 619 changed files: - .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/test-metrics.sh - compiler/GHC.hs - compiler/GHC/Builtin/Names.hs - compiler/GHC/Builtin/PrimOps.hs - compiler/GHC/Builtin/PrimOps/Ids.hs - compiler/GHC/Builtin/Types/Literals.hs - compiler/GHC/Builtin/Utils.hs - 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/Types.hs - compiler/GHC/Cmm.hs - compiler/GHC/Cmm/BlockId.hs - 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+ testsuite/tests/warnings/should_compile/DodgyImports04.stderr - testsuite/tests/warnings/should_compile/DodgyImports_hiding.stderr - testsuite/tests/warnings/should_compile/all.T - utils/check-exact/ExactPrint.hs - utils/genapply/Main.hs - utils/haddock/haddock-api/haddock-api.cabal - − utils/haddock/haddock-api/src/Haddock/Backends/HaddockDB.hs - utils/haddock/haddock-api/src/Haddock/Backends/LaTeX.hs - utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs - utils/haddock/haddock-api/src/Haddock/Convert.hs - utils/haddock/haddock-api/src/Haddock/GhcUtils.hs - utils/haddock/haddock-api/src/Haddock/Interface/Create.hs - utils/haddock/html-test/ref/Bug1050.html - utils/haddock/html-test/ref/LinearTypes.html - utils/haddock/html-test/ref/PatternSyns.html - + utils/haddock/html-test/ref/PatternSyns2.html - utils/haddock/html-test/ref/TypeOperators.html - + utils/haddock/html-test/src/PatternSyns2.hs - utils/haddock/latex-test/ref/LinearTypes/LinearTypes.tex The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/aba0f6e686047457eb8d3d49298355… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/aba0f6e686047457eb8d3d49298355… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][master] Fix the documentation of `hIsClosed`
by Marge Bot (＠marge-bot) 22 Dec '25

22 Dec '25

Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC Commits: eb0628b1 by Wolfgang Jeltsch at 2025-12-21T16:26:47-05:00 Fix the documentation of `hIsClosed` - - - - - 1 changed file: - libraries/ghc-internal/src/GHC/Internal/IO/Handle.hs Changes: ===================================== libraries/ghc-internal/src/GHC/Internal/IO/Handle.hs ===================================== @@ -480,7 +480,7 @@ hIsOpen handle = SemiClosedHandle -> return False _ -> return True --- | @'hIsOpen' hdl@ returns whether the handle is closed. +-- | @'hIsClosed' hdl@ returns whether the handle is closed. -- If the 'haType' of @hdl@ is 'ClosedHandle' this returns 'True' -- and 'False' otherwise. hIsClosed :: Handle -> IO Bool View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/eb0628b1ed44c6f80a1c9fb409f1154… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/eb0628b1ed44c6f80a1c9fb409f1154… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][master] Remove the unused known key and name for `liftM`
by Marge Bot (＠marge-bot) 22 Dec '25

22 Dec '25

Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC Commits: 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. - - - - - 1 changed file: - compiler/GHC/Builtin/Names.hs Changes: ===================================== compiler/GHC/Builtin/Names.hs ===================================== @@ -467,7 +467,6 @@ basicKnownKeyNames -- Monad comprehensions , guardMName - , liftMName , mzipName -- GHCi Sandbox @@ -1501,9 +1500,8 @@ choiceAName = varQual gHC_INTERNAL_ARROW (fsLit "|||") choiceAIdKey loopAName = varQual gHC_INTERNAL_ARROW (fsLit "loop") loopAIdKey -- Monad comprehensions -guardMName, liftMName, mzipName :: Name +guardMName, mzipName :: Name guardMName = varQual gHC_INTERNAL_MONAD (fsLit "guard") guardMIdKey -liftMName = varQual gHC_INTERNAL_MONAD (fsLit "liftM") liftMIdKey mzipName = varQual gHC_INTERNAL_CONTROL_MONAD_ZIP (fsLit "mzip") mzipIdKey @@ -2378,9 +2376,8 @@ toIntegerClassOpKey = mkPreludeMiscIdUnique 192 toRationalClassOpKey = mkPreludeMiscIdUnique 193 -- Monad comprehensions -guardMIdKey, liftMIdKey, mzipIdKey :: Unique +guardMIdKey, mzipIdKey :: Unique guardMIdKey = mkPreludeMiscIdUnique 194 -liftMIdKey = mkPreludeMiscIdUnique 195 mzipIdKey = mkPreludeMiscIdUnique 196 -- GHCi View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/b8220daf46e2ad58171d993da61d781… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/b8220daf46e2ad58171d993da61d781… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][master] Remove the unused known key and name for `failIO`
by Marge Bot (＠marge-bot) 22 Dec '25

22 Dec '25

Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC Commits: 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. - - - - - 1 changed file: - compiler/GHC/Builtin/Names.hs Changes: ===================================== compiler/GHC/Builtin/Names.hs ===================================== @@ -292,7 +292,7 @@ basicKnownKeyNames fmapName, -- Monad stuff - thenIOName, bindIOName, returnIOName, failIOName, bindMName, thenMName, + thenIOName, bindIOName, returnIOName, bindMName, thenMName, returnMName, joinMName, -- MonadFail @@ -1451,13 +1451,12 @@ ghciStepIoMName = varQual gHC_INTERNAL_GHCI (fsLit "ghciStepIO") ghciStepIoMClas -- IO things ioTyConName, ioDataConName, - thenIOName, bindIOName, returnIOName, failIOName :: Name + thenIOName, bindIOName, returnIOName :: Name ioTyConName = tcQual gHC_TYPES (fsLit "IO") ioTyConKey ioDataConName = dcQual gHC_TYPES (fsLit "IO") ioDataConKey thenIOName = varQual gHC_INTERNAL_BASE (fsLit "thenIO") thenIOIdKey bindIOName = varQual gHC_INTERNAL_BASE (fsLit "bindIO") bindIOIdKey returnIOName = varQual gHC_INTERNAL_BASE (fsLit "returnIO") returnIOIdKey -failIOName = varQual gHC_INTERNAL_IO (fsLit "failIO") failIOIdKey -- IO things printName :: Name @@ -2252,7 +2251,7 @@ cstringLengthIdKey = mkPreludeMiscIdUnique 28 concatIdKey, filterIdKey, zipIdKey, bindIOIdKey, returnIOIdKey, newStablePtrIdKey, - printIdKey, failIOIdKey, nullAddrIdKey, voidArgIdKey, + printIdKey, nullAddrIdKey, voidArgIdKey, otherwiseIdKey, assertIdKey :: Unique concatIdKey = mkPreludeMiscIdUnique 31 filterIdKey = mkPreludeMiscIdUnique 32 @@ -2261,7 +2260,6 @@ bindIOIdKey = mkPreludeMiscIdUnique 34 returnIOIdKey = mkPreludeMiscIdUnique 35 newStablePtrIdKey = mkPreludeMiscIdUnique 36 printIdKey = mkPreludeMiscIdUnique 37 -failIOIdKey = mkPreludeMiscIdUnique 38 nullAddrIdKey = mkPreludeMiscIdUnique 39 voidArgIdKey = mkPreludeMiscIdUnique 40 otherwiseIdKey = mkPreludeMiscIdUnique 43 View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/a1ed86fe027c4bd3f7c76a010b82f21… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/a1ed86fe027c4bd3f7c76a010b82f21… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][master] Remove the unused known key and name for `Fingerprint`
by Marge Bot (＠marge-bot) 22 Dec '25

22 Dec '25

Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC Commits: 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. - - - - - 1 changed file: - compiler/GHC/Builtin/Names.hs Changes: ===================================== compiler/GHC/Builtin/Names.hs ===================================== @@ -479,9 +479,6 @@ basicKnownKeyNames , staticPtrDataConName, staticPtrInfoDataConName , fromStaticPtrName - -- Fingerprint - , fingerprintDataConName - -- Custom type errors , errorMessageTypeErrorFamName , typeErrorTextDataConName @@ -1595,10 +1592,6 @@ fromStaticPtrName :: Name fromStaticPtrName = varQual gHC_INTERNAL_STATICPTR (fsLit "fromStaticPtr") fromStaticPtrClassOpKey -fingerprintDataConName :: Name -fingerprintDataConName = - dcQual gHC_INTERNAL_FINGERPRINT_TYPE (fsLit "Fingerprint") fingerprintDataConKey - constPtrConName :: Name constPtrConName = tcQual gHC_INTERNAL_FOREIGN_C_CONSTPTR (fsLit "ConstPtr") constPtrTyConKey @@ -2081,9 +2074,6 @@ staticPtrDataConKey = mkPreludeDataConUnique 33 staticPtrInfoDataConKey :: Unique staticPtrInfoDataConKey = mkPreludeDataConUnique 34 -fingerprintDataConKey :: Unique -fingerprintDataConKey = mkPreludeDataConUnique 35 - srcLocDataConKey :: Unique srcLocDataConKey = mkPreludeDataConUnique 37 View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/424388c278b1a29fa8ff3af10db3e8b… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/424388c278b1a29fa8ff3af10db3e8b… You're receiving this email because of your account on gitlab.haskell.org.

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