[Git][ghc/ghc][wip/romes/step-out-5] debugger: Implement step-out feature
by Rodrigo Mesquita (＠alt-romes) 18 Jun '25
by Rodrigo Mesquita (＠alt-romes) 18 Jun '25
18 Jun '25
Rodrigo Mesquita pushed to branch wip/romes/step-out-5 at Glasgow Haskell Compiler / GHC
Commits:
d2f8009d by Rodrigo Mesquita at 2025-06-18T11:49:55+01:00
debugger: Implement step-out feature
Implements support for stepping-out of a function (aka breaking right after
returning from a function) in the interactive debugger.
It also introduces a GHCi command :stepout to step-out of a function
being debugged in the interpreter. The feature is described as:
Stop at the first breakpoint immediately after returning from the current
function scope.
Known limitations: because a function tail-call does not push a stack
frame, if step-out is used inside of a function that was tail-called,
execution will not be returned to its caller, but rather its caller's
first non-tail caller. On the other hand, it means the debugger
follows the more realistic execution of the program.
In the following example:
.. code-block:: none
f = do
a
b <--- (1) set breakpoint then step in here
c
b = do
...
d <--- (2) step-into this tail call
d = do
...
something <--- (3) step-out here
...
Stepping-out will stop execution at the `c` invokation in `f`, rather than
stopping at `b`.
The key idea is simple: When step-out is enabled, traverse the runtime
stack until a continuation BCO is found -- and enable the breakpoint
heading that BCO explicitly using its tick-index.
The details are specified in `Note [Debugger: Step-out]` in `rts/Interpreter.c`.
Since PUSH_ALTS BCOs (representing case continuations) were never headed
by a breakpoint (unlike the case alternatives they push), we introduced
the BRK_ALTS instruction to allow the debugger to set a case
continuation to stop at the breakpoint heading the alternative that is
taken. This is further described in `Note [Debugger: BRK_ALTS]`.
Fixes #26042
- - - - -
46 changed files:
- compiler/GHC/ByteCode/Asm.hs
- compiler/GHC/ByteCode/Instr.hs
- compiler/GHC/Driver/Config.hs
- compiler/GHC/Runtime/Eval.hs
- compiler/GHC/Runtime/Eval/Types.hs
- compiler/GHC/StgToByteCode.hs
- docs/users_guide/ghci.rst
- ghc/GHCi/UI.hs
- libraries/ghc-heap/GHC/Exts/Heap/Closures.hs
- libraries/ghc-heap/GHC/Exts/Heap/FFIClosures_ProfilingDisabled.hsc
- libraries/ghc-heap/GHC/Exts/Heap/FFIClosures_ProfilingEnabled.hsc
- libraries/ghc-heap/tests/parse_tso_flags.hs
- libraries/ghci/GHCi/Debugger.hs
- libraries/ghci/GHCi/Message.hs
- libraries/ghci/GHCi/Run.hs
- + rts/Debugger.cmm
- rts/Disassembler.c
- rts/Interpreter.c
- rts/Interpreter.h
- rts/RtsSymbols.c
- rts/StgMiscClosures.cmm
- rts/include/rts/Bytecodes.h
- rts/include/rts/Constants.h
- rts/include/rts/storage/Closures.h
- rts/rts.cabal
- + testsuite/tests/ghci.debugger/scripts/T26042b.hs
- + testsuite/tests/ghci.debugger/scripts/T26042b.script
- + testsuite/tests/ghci.debugger/scripts/T26042b.stdout
- + testsuite/tests/ghci.debugger/scripts/T26042c.hs
- + testsuite/tests/ghci.debugger/scripts/T26042c.script
- + testsuite/tests/ghci.debugger/scripts/T26042c.stdout
- + testsuite/tests/ghci.debugger/scripts/T26042d.hs
- + testsuite/tests/ghci.debugger/scripts/T26042d.script
- + testsuite/tests/ghci.debugger/scripts/T26042d.stdout
- + testsuite/tests/ghci.debugger/scripts/T26042e.hs
- + testsuite/tests/ghci.debugger/scripts/T26042e.script
- + testsuite/tests/ghci.debugger/scripts/T26042e.stdout
- + testsuite/tests/ghci.debugger/scripts/T26042f.hs
- + testsuite/tests/ghci.debugger/scripts/T26042f.script
- + testsuite/tests/ghci.debugger/scripts/T26042f1.stderr
- + testsuite/tests/ghci.debugger/scripts/T26042f1.stdout
- + testsuite/tests/ghci.debugger/scripts/T26042f2.stdout
- + testsuite/tests/ghci.debugger/scripts/T26042g.hs
- + testsuite/tests/ghci.debugger/scripts/T26042g.script
- + testsuite/tests/ghci.debugger/scripts/T26042g.stdout
- testsuite/tests/ghci.debugger/scripts/all.T
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/d2f8009dcf0491bca7630c424b42fea…
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/d2f8009dcf0491bca7630c424b42fea…
You're receiving this email because of your account on gitlab.haskell.org.
1
0
[Git][ghc/ghc][wip/fendor/fix-reload-targets] 11 commits: Add necessary flag for js linking
by Hannes Siebenhandl (＠fendor) 18 Jun '25
by Hannes Siebenhandl (＠fendor) 18 Jun '25
18 Jun '25
Hannes Siebenhandl pushed to branch wip/fendor/fix-reload-targets at Glasgow Haskell Compiler / GHC
Commits:
1d99d3e4 by maralorn at 2025-06-12T03:47:39-04:00
Add necessary flag for js linking
- - - - -
974d5734 by maralorn at 2025-06-12T03:47:39-04:00
Don’t use additional linker flags to detect presence of -fno-pie in configure.ac
This mirrors the behavior of ghc-toolchain
- - - - -
1e9eb118 by Andrew Lelechenko at 2025-06-12T03:48:21-04:00
Add HasCallStack to Control.Monad.Fail.fail
CLC proposal https://github.com/haskell/core-libraries-committee/issues/327
2% compile-time allocations increase in T3064, likely because `fail`
is now marginally more expensive to compile.
Metric Increase:
T3064
- - - - -
6d12060f by meooow25 at 2025-06-12T14:26:07-04:00
Bump containers submodule to 0.8
Also
* Disable -Wunused-imports for containers
* Allow containers-0.8 for in-tree packages
* Bump some submodules so that they allow containers-0.8. These are not
at any particular versions.
* Remove unused deps containers and split from ucd2haskell
* Fix tests affected by the new containers and hpc-bin
- - - - -
537bd233 by Peng Fan at 2025-06-12T14:27:02-04:00
NCG/LA64: Optimize code generation and reduce build-directory size.
1. makeFarBranches: Prioritize fewer instruction sequences.
2. Prefer instructions with immediate numbers to reduce register moves,
e.g. andi,ori,xori,addi.
3. Ppr: Remove unnecessary judgments.
4. genJump: Avoid "ld+jr" as much as possible.
5. BCOND and BCOND1: Implement conditional jumps with two jump ranges,
with limited choice of the shortest.
6. Implement FSQRT, CLT, CTZ.
7. Remove unnecessary code.
- - - - -
19f20861 by Simon Peyton Jones at 2025-06-13T09:51:11-04:00
Improve redundant constraints for instance decls
Addresses #25992, which showed that the default methods
of an instance decl could make GHC fail to report redundant
constraints.
Figuring out how to do this led me to refactor the computation
of redundant constraints. See the entirely rewritten
Note [Tracking redundant constraints]
in GHC.Tc.Solver.Solve
- - - - -
1d02798e by Matthew Pickering at 2025-06-13T09:51:54-04:00
Refactor the treatment of nested Template Haskell splices
* The difference between a normal splice, a quasiquoter and implicit
splice caused by lifting is stored in the AST after renaming.
* Information that the renamer learns about splices is stored in the
relevant splice extension points (XUntypedSpliceExpr, XQuasiQuote).
* Normal splices and quasi quotes record the flavour of splice
(exp/pat/dec etc)
* Implicit lifting stores information about why the lift was attempted,
so if it fails, that can be reported to the user.
* After renaming, the decision taken to attempt to implicitly lift a
variable is stored in the `XXUntypedSplice` extension field in the
`HsImplicitLiftSplice` constructor.
* Since all the information is stored in the AST, in `HsUntypedSplice`,
the type of `PendingRnSplice` now just stores a `HsUntypedSplice`.
* Error messages since the original program can be easily
printed, this is noticeable in the case of implicit lifting.
* The user-written syntax is directly type-checked. Before, some
desugaring took place in the
* Fixes .hie files to work better with nested splices (nested splices
are not indexed)
* The location of the quoter in a quasiquote is now located, so error
messages will precisely point to it (and again, it is indexed by hie
files)
In the future, the typechecked AST should also retain information about
the splices and the specific desugaring being left to the desugarer.
Also, `runRnSplice` should call `tcUntypedSplice`, otherwise the
typechecking logic is duplicated (see the `QQError` and `QQTopError`
tests for a difference caused by this).
- - - - -
f93798ba by Cheng Shao at 2025-06-13T09:52:35-04:00
libffi: update to 3.5.1
Bumps libffi submodule.
- - - - -
c7aa0c10 by Andreas Klebinger at 2025-06-15T05:47:24-04:00
Revert "Specialise: Don't float out constraint components."
This reverts commit c9abb87ccc0c91cd94f42b3e36270158398326ef.
Turns out two benchmarks from #19747 regresses by a factor of 7-8x if
we do not float those out.
- - - - -
fd998679 by Krzysztof Gogolewski at 2025-06-15T05:48:06-04:00
Fix EPT enforcement when mixing unboxed tuples and non-tuples
The code was assuming that an alternative cannot be returning a normal
datacon and an unboxed tuple at the same time. However, as seen in #26107,
this can happen when using a GADT to refine the representation type.
The solution is just to conservatively return TagDunno.
- - - - -
83c664dd by fendor at 2025-06-18T10:39:18+02:00
Teach `:reload` about multiple home units
`:reload` needs to lookup the `ModuleName` and must not assume the given
`ModuleName` is in the current `HomeUnit`.
We add a new utility function which allows us to find a `HomeUnitModule`
instead of a `Module`.
- - - - -
119 changed files:
- compiler/GHC/Builtin/Names/TH.hs
- compiler/GHC/CmmToAsm/LA64.hs
- compiler/GHC/CmmToAsm/LA64/CodeGen.hs
- compiler/GHC/CmmToAsm/LA64/Instr.hs
- compiler/GHC/CmmToAsm/LA64/Ppr.hs
- compiler/GHC/Core/Opt/Specialise.hs
- compiler/GHC/Hs/Expr.hs
- compiler/GHC/Hs/Expr.hs-boot
- compiler/GHC/Hs/Instances.hs
- compiler/GHC/HsToCore/Quote.hs
- compiler/GHC/Iface/Ext/Ast.hs
- compiler/GHC/Parser.y
- compiler/GHC/Parser/Lexer.x
- compiler/GHC/Rename/Expr.hs
- compiler/GHC/Rename/Splice.hs
- compiler/GHC/Stg/EnforceEpt/Types.hs
- compiler/GHC/Tc/Errors.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Gen/App.hs
- compiler/GHC/Tc/Gen/Expr.hs
- compiler/GHC/Tc/Gen/Head.hs
- compiler/GHC/Tc/Gen/Splice.hs
- compiler/GHC/Tc/Gen/Splice.hs-boot
- compiler/GHC/Tc/Solver/Default.hs
- compiler/GHC/Tc/Solver/InertSet.hs
- compiler/GHC/Tc/Solver/Solve.hs
- compiler/GHC/Tc/TyCl/Instance.hs
- compiler/GHC/Tc/Types/Constraint.hs
- compiler/GHC/Tc/Types/ErrCtxt.hs
- compiler/GHC/Tc/Types/Evidence.hs
- compiler/GHC/Tc/Types/Origin.hs
- compiler/GHC/Tc/Types/TH.hs
- compiler/GHC/Tc/Utils/Concrete.hs
- compiler/GHC/Tc/Utils/Instantiate.hs
- compiler/GHC/Tc/Utils/TcMType.hs
- compiler/GHC/ThToHs.hs
- compiler/GHC/Types/Name/Reader.hs
- compiler/GHC/Types/ThLevelIndex.hs
- compiler/Language/Haskell/Syntax/Expr.hs
- compiler/Language/Haskell/Syntax/Extension.hs
- compiler/ghc.cabal.in
- ghc/GHCi/UI.hs
- ghc/ghc-bin.cabal.in
- hadrian/hadrian.cabal
- hadrian/src/Settings/Warnings.hs
- libffi-tarballs
- libraries/base/changelog.md
- libraries/base/tests/IO/withBinaryFile002.stderr
- libraries/base/tests/IO/withFile002.stderr
- libraries/base/tests/IO/withFileBlocking002.stderr
- libraries/containers
- libraries/ghc-boot/ghc-boot.cabal.in
- libraries/ghc-heap/ghc-heap.cabal.in
- libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fail.hs
- libraries/ghc-internal/src/GHC/Internal/Exception/Type.hs-boot
- libraries/ghc-internal/src/GHC/Internal/IO.hs-boot
- libraries/ghc-internal/src/GHC/Internal/IO/Exception.hs-boot
- libraries/ghc-internal/tools/ucd2haskell/ucd2haskell.cabal
- libraries/ghci/ghci.cabal.in
- libraries/haskeline
- libraries/hpc
- m4/fp_gcc_supports_no_pie.m4
- m4/fptools_set_c_ld_flags.m4
- testsuite/tests/deSugar/should_run/DsDoExprFailMsg.stderr
- testsuite/tests/deSugar/should_run/DsMonadCompFailMsg.stderr
- testsuite/tests/dependent/should_fail/T13135_simple.stderr
- testsuite/tests/diagnostic-codes/codes.stdout
- + testsuite/tests/ghci/prog021/A.hs
- + testsuite/tests/ghci/prog021/B.hs
- + testsuite/tests/ghci/prog021/Makefile
- + testsuite/tests/ghci/prog021/prog021.T
- + testsuite/tests/ghci/prog021/prog021.script
- + testsuite/tests/ghci/prog021/prog021.stderr
- + testsuite/tests/ghci/prog021/prog021.stdout
- testsuite/tests/hpc/fork/hpc_fork.stdout
- testsuite/tests/hpc/function/tough.stdout
- testsuite/tests/hpc/function2/tough2.stdout
- testsuite/tests/hpc/simple/hpc001.stdout
- testsuite/tests/interface-stability/base-exports.stdout
- testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs
- testsuite/tests/interface-stability/base-exports.stdout-mingw32
- testsuite/tests/interface-stability/base-exports.stdout-ws-32
- testsuite/tests/linear/should_fail/LinearTHFail.stderr
- testsuite/tests/linters/notes.stdout
- testsuite/tests/partial-sigs/should_fail/T10999.stderr
- testsuite/tests/perf/compiler/hard_hole_fits.stderr
- testsuite/tests/quasiquotation/T3953.stderr
- + testsuite/tests/quotes/QQError.hs
- + testsuite/tests/quotes/QQError.stderr
- testsuite/tests/quotes/T10384.stderr
- testsuite/tests/quotes/TH_localname.stderr
- testsuite/tests/quotes/all.T
- testsuite/tests/rebindable/DoRestrictedM.hs
- + testsuite/tests/rep-poly/T26107.hs
- testsuite/tests/rep-poly/all.T
- + testsuite/tests/th/QQInQuote.hs
- + testsuite/tests/th/QQTopError.hs
- + testsuite/tests/th/QQTopError.stderr
- testsuite/tests/th/T10598_TH.stderr
- testsuite/tests/th/T14681.stderr
- testsuite/tests/th/T15321.stderr
- testsuite/tests/th/T17804.stderr
- testsuite/tests/th/T5508.stderr
- testsuite/tests/th/TH_Lift.stderr
- testsuite/tests/th/all.T
- testsuite/tests/th/overloaded/TH_overloaded_constraints_fail.stderr
- + testsuite/tests/typecheck/should_compile/T25992.hs
- + testsuite/tests/typecheck/should_compile/T25992.stderr
- testsuite/tests/typecheck/should_compile/all.T
- testsuite/tests/typecheck/should_compile/subsumption_sort_hole_fits.stderr
- testsuite/tests/typecheck/should_compile/valid_hole_fits.stderr
- testsuite/tests/typecheck/should_fail/tcfail097.stderr
- utils/check-exact/ExactPrint.hs
- utils/ghc-toolchain/src/GHC/Toolchain/Tools/Link.hs
- utils/haddock/haddock-library/haddock-library.cabal
- utils/haddock/hypsrc-test/ref/src/Quasiquoter.html
- utils/hpc
- utils/hsc2hs
- utils/iserv/iserv.cabal.in
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/813b4673bcba3ed0007921dadeb47e…
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/813b4673bcba3ed0007921dadeb47e…
You're receiving this email because of your account on gitlab.haskell.org.
1
0
[Git][ghc/ghc] Pushed new branch wip/fendor/fix-reload-targets
by Hannes Siebenhandl (＠fendor) 18 Jun '25
by Hannes Siebenhandl (＠fendor) 18 Jun '25
18 Jun '25
Hannes Siebenhandl pushed new branch wip/fendor/fix-reload-targets at Glasgow Haskell Compiler / GHC
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/fendor/fix-reload-targets
You're receiving this email because of your account on gitlab.haskell.org.
1
0
[Git][ghc/ghc] Pushed new branch wip/fendor/fix-mhu-docs-using.rst
by Hannes Siebenhandl (＠fendor) 18 Jun '25
by Hannes Siebenhandl (＠fendor) 18 Jun '25
18 Jun '25
Hannes Siebenhandl pushed new branch wip/fendor/fix-mhu-docs-using.rst at Glasgow Haskell Compiler / GHC
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/fendor/fix-mhu-docs-using.rst
You're receiving this email because of your account on gitlab.haskell.org.
1
0
[Git][ghc/ghc][wip/T22859] Implement user-defined allocation limit handlers
by Teo Camarasu (＠teo) 17 Jun '25
by Teo Camarasu (＠teo) 17 Jun '25
17 Jun '25
Teo Camarasu pushed to branch wip/T22859 at Glasgow Haskell Compiler / GHC
Commits:
630902af by Teo Camarasu at 2025-06-17T22:13:21+01:00
Implement user-defined allocation limit handlers
Allocation Limits allow killing a thread if they allocate more than a
user-specified limit.
We extend this feature to allow more versatile behaviour.
- We allow not killing the thread if the limit is exceeded.
- We allow setting a custom handler to be called when the limit is exceeded.
User-specified allocation limit handlers run in a fresh thread and are passed
the ThreadId of the thread that exceeded its limit.
We introduce utility functions for getting and setting the allocation
limits of other threads, so that users can reset the limit of a thread
from a handler. Both of these are somewhat coarse-grained as we are
unaware of the allocations in the current nursery chunk.
We provide several examples of usages in testsuite/tests/rts/T22859.hs
Resolves #22859
- - - - -
27 changed files:
- compiler/GHC/Builtin/primops.txt.pp
- compiler/GHC/StgToCmm/Prim.hs
- compiler/GHC/StgToJS/Prim.hs
- libraries/ghc-experimental/ghc-experimental.cabal.in
- + libraries/ghc-experimental/src/System/Mem/Experimental.hs
- libraries/ghc-internal/ghc-internal.cabal.in
- + libraries/ghc-internal/src/GHC/Internal/AllocationLimitHandler.hs
- rts/Prelude.h
- rts/PrimOps.cmm
- rts/RtsStartup.c
- rts/RtsSymbols.c
- rts/Schedule.c
- rts/external-symbols.list.in
- rts/include/rts/storage/GC.h
- rts/include/rts/storage/TSO.h
- rts/include/stg/MiscClosures.h
- testsuite/tests/interface-stability/base-exports.stdout
- testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs
- testsuite/tests/interface-stability/base-exports.stdout-mingw32
- testsuite/tests/interface-stability/base-exports.stdout-ws-32
- testsuite/tests/interface-stability/ghc-experimental-exports.stdout
- testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32
- testsuite/tests/interface-stability/ghc-prim-exports.stdout
- testsuite/tests/interface-stability/ghc-prim-exports.stdout-mingw32
- + testsuite/tests/rts/T22859.hs
- + testsuite/tests/rts/T22859.stderr
- testsuite/tests/rts/all.T
Changes:
=====================================
compiler/GHC/Builtin/primops.txt.pp
=====================================
@@ -4065,6 +4065,15 @@ primop SetThreadAllocationCounter "setThreadAllocationCounter#" GenPrimOp
effect = ReadWriteEffect
out_of_line = True
+primop SetOtherThreadAllocationCounter "setOtherThreadAllocationCounter#" GenPrimOp
+ Int64# -> ThreadId# -> State# RealWorld -> State# RealWorld
+ { Sets the allocation counter for the another thread to the given value.
+ This doesn't take allocations into the current nursery chunk into account.
+ Therefore it is only accurate if the other thread is not currently running. }
+ with
+ effect = ReadWriteEffect
+ out_of_line = True
+
primtype StackSnapshot#
{ Haskell representation of a @StgStack*@ that was created (cloned)
with a function in "GHC.Stack.CloneStack". Please check the
=====================================
compiler/GHC/StgToCmm/Prim.hs
=====================================
@@ -1775,6 +1775,7 @@ emitPrimOp cfg primop =
TraceEventBinaryOp -> alwaysExternal
TraceMarkerOp -> alwaysExternal
SetThreadAllocationCounter -> alwaysExternal
+ SetOtherThreadAllocationCounter -> alwaysExternal
KeepAliveOp -> alwaysExternal
where
=====================================
compiler/GHC/StgToJS/Prim.hs
=====================================
@@ -1173,6 +1173,7 @@ genPrim prof bound ty op = case op of
WhereFromOp -> unhandledPrimop op -- should be easily implementable with o.f.n
SetThreadAllocationCounter -> unhandledPrimop op
+ SetOtherThreadAllocationCounter -> unhandledPrimop op
------------------------------- Vector -----------------------------------------
-- For now, vectors are unsupported on the JS backend. Simply put, they do not
=====================================
libraries/ghc-experimental/ghc-experimental.cabal.in
=====================================
@@ -38,6 +38,7 @@ library
GHC.RTS.Flags.Experimental
GHC.Stats.Experimental
Prelude.Experimental
+ System.Mem.Experimental
if arch(wasm32)
exposed-modules: GHC.Wasm.Prim
other-extensions:
=====================================
libraries/ghc-experimental/src/System/Mem/Experimental.hs
=====================================
@@ -0,0 +1,10 @@
+module System.Mem.Experimental
+ ( setGlobalAllocationLimitHandler
+ , AllocationLimitKillBehaviour(..)
+ , getAllocationCounterFor
+ , setAllocationCounterFor
+ , enableAllocationLimitFor
+ , disableAllocationLimitFor
+ )
+ where
+import GHC.Internal.AllocationLimitHandler
=====================================
libraries/ghc-internal/ghc-internal.cabal.in
=====================================
@@ -122,6 +122,7 @@ Library
rts == 1.0.*
exposed-modules:
+ GHC.Internal.AllocationLimitHandler
GHC.Internal.ClosureTypes
GHC.Internal.Control.Arrow
GHC.Internal.Control.Category
=====================================
libraries/ghc-internal/src/GHC/Internal/AllocationLimitHandler.hs
=====================================
@@ -0,0 +1,117 @@
+{-# LANGUAGE MagicHash #-}
+{-# LANGUAGE UnboxedTuples #-}
+{-# LANGUAGE UnliftedFFITypes #-}
+{-# LANGUAGE GHCForeignImportPrim #-}
+{-# OPTIONS_HADDOCK not-home #-}
+module GHC.Internal.AllocationLimitHandler
+ ( runAllocationLimitHandler
+ , setGlobalAllocationLimitHandler
+ , AllocationLimitKillBehaviour(..)
+ , getAllocationCounterFor
+ , setAllocationCounterFor
+ , enableAllocationLimitFor
+ , disableAllocationLimitFor
+ )
+ where
+import GHC.Internal.Base
+import GHC.Internal.Conc.Sync (ThreadId(..))
+import GHC.Internal.Data.IORef (IORef, readIORef, writeIORef, newIORef)
+import GHC.Internal.Foreign.C.Types
+import GHC.Internal.IO (unsafePerformIO)
+import GHC.Internal.Int (Int64(..))
+
+
+{-# NOINLINE allocationLimitHandler #-}
+allocationLimitHandler :: IORef (ThreadId -> IO ())
+allocationLimitHandler = unsafePerformIO (newIORef defaultHandler)
+
+defaultHandler :: ThreadId -> IO ()
+defaultHandler _ = pure ()
+
+foreign import ccall "setAllocLimitKill" setAllocLimitKill :: CBool -> CBool -> IO ()
+
+runAllocationLimitHandler :: ThreadId# -> IO ()
+runAllocationLimitHandler tid = do
+ hook <- getAllocationLimitHandler
+ hook $ ThreadId tid
+
+getAllocationLimitHandler :: IO (ThreadId -> IO ())
+getAllocationLimitHandler = readIORef allocationLimitHandler
+
+data AllocationLimitKillBehaviour =
+ KillOnAllocationLimit
+ -- ^ Throw a @AllocationLimitExceeded@ async exception to the thread when the
+ -- allocation limit is exceeded.
+ | DontKillOnAllocationLimit
+ -- ^ Do not throw an exception when the allocation limit is exceeded.
+
+-- | Define the behaviour for handling allocation limits.
+-- The default behaviour is to throw an @AllocationLimitExceeded@ async exception to the thread.
+-- This can be overriden using @AllocationLimitKillBehaviour@.
+--
+-- We can set a user-specified handler, which can be run in addition to
+-- or in place of the exception.
+-- This allows for instance logging on the allocation limit being exceeded,
+-- or dynamically determining whether to terminate the thread.
+-- The handler is not guaranteed to run before the thread is terminated or restarted.
+--
+-- Note: that if you don't terminate the thread, then the allocation limit gets
+-- removed.
+-- If you wish to keep the allocation limit you will have to reset it using
+-- @setAllocationCounter@ and @enableAllocationLimit@.
+setGlobalAllocationLimitHandler :: AllocationLimitKillBehaviour -> Maybe (ThreadId -> IO ()) -> IO ()
+setGlobalAllocationLimitHandler killBehaviour mHandler = do
+ shouldRunHandler <- case mHandler of
+ Just hook -> do
+ writeIORef allocationLimitHandler hook
+ pure 1
+ Nothing -> do
+ writeIORef allocationLimitHandler defaultHandler
+ pure 0
+ let shouldKill =
+ case killBehaviour of
+ KillOnAllocationLimit -> 1
+ DontKillOnAllocationLimit -> 0
+ setAllocLimitKill shouldKill shouldRunHandler
+
+-- | Retrieves the allocation counter for the another thread.
+foreign import prim "stg_getOtherThreadAllocationCounterzh" getOtherThreadAllocationCounter#
+ :: ThreadId#
+ -> State# RealWorld
+ -> (# State# RealWorld, Int64# #)
+
+-- | Get the allocation counter for a different thread.
+--
+-- Note: this doesn't take the current nursery chunk into account.
+-- If the thread is running then it may underestimate allocations by the size of a nursery thread.
+getAllocationCounterFor :: ThreadId -> IO Int64
+getAllocationCounterFor (ThreadId t#) = IO $ \s ->
+ case getOtherThreadAllocationCounter# t# s of (# s', i# #) -> (# s', I64# i# #)
+
+-- | Set the allocation counter for a different thread.
+-- This can be combined with 'enableAllocationLimitFor' to enable allocation limits for another thread.
+-- You may wish to do this during a user-specified allocation limit handler.
+--
+-- Note: this doesn't take the current nursery chunk into account.
+-- If the thread is running then it may overestimate allocations by the size of a nursery thread,
+-- and trigger the limit sooner than expected.
+setAllocationCounterFor :: Int64 -> ThreadId -> IO ()
+setAllocationCounterFor (I64# i#) (ThreadId t#) = IO $ \s ->
+ case setOtherThreadAllocationCounter# i# t# s of s' -> (# s', () #)
+
+
+-- | Enable allocation limit processing the thread @t@.
+enableAllocationLimitFor :: ThreadId -> IO ()
+enableAllocationLimitFor (ThreadId t) = do
+ rts_enableThreadAllocationLimit t
+
+-- | Disable allocation limit processing the thread @t@.
+disableAllocationLimitFor :: ThreadId -> IO ()
+disableAllocationLimitFor (ThreadId t) = do
+ rts_disableThreadAllocationLimit t
+
+foreign import ccall unsafe "rts_enableThreadAllocationLimit"
+ rts_enableThreadAllocationLimit :: ThreadId# -> IO ()
+
+foreign import ccall unsafe "rts_disableThreadAllocationLimit"
+ rts_disableThreadAllocationLimit :: ThreadId# -> IO ()
=====================================
rts/Prelude.h
=====================================
@@ -67,6 +67,7 @@ PRELUDE_CLOSURE(ghczminternal_GHCziInternalziEventziWindows_processRemoteComplet
PRELUDE_CLOSURE(ghczminternal_GHCziInternalziTopHandler_flushStdHandles_closure);
PRELUDE_CLOSURE(ghczminternal_GHCziInternalziTopHandler_runMainIO_closure);
+PRELUDE_CLOSURE(ghczminternal_GHCziInternalziAllocationLimitHandler_runAllocationLimitHandler_closure);
PRELUDE_INFO(ghczminternal_GHCziInternalziCString_unpackCStringzh_info);
PRELUDE_INFO(ghczminternal_GHCziInternalziTypes_Czh_con_info);
@@ -102,6 +103,7 @@ PRELUDE_INFO(ghczminternal_GHCziInternalziStable_StablePtr_con_info);
#if defined(mingw32_HOST_OS)
#define processRemoteCompletion_closure DLL_IMPORT_DATA_REF(ghczminternal_GHCziInternalziEventziWindows_processRemoteCompletion_closure)
#endif
+#define runAllocationLimitHandler_closure DLL_IMPORT_DATA_REF(ghczminternal_GHCziInternalziAllocationLimitHandler_runAllocationLimitHandler_closure)
#define flushStdHandles_closure DLL_IMPORT_DATA_REF(ghczminternal_GHCziInternalziTopHandler_flushStdHandles_closure)
#define runMainIO_closure DLL_IMPORT_DATA_REF(ghczminternal_GHCziInternalziTopHandler_runMainIO_closure)
=====================================
rts/PrimOps.cmm
=====================================
@@ -2889,6 +2889,11 @@ stg_getThreadAllocationCounterzh ()
return (StgTSO_alloc_limit(CurrentTSO) - TO_I64(offset));
}
+stg_getOtherThreadAllocationCounterzh ( gcptr t )
+{
+ return (StgTSO_alloc_limit(t));
+}
+
stg_setThreadAllocationCounterzh ( I64 counter )
{
// Allocation in the current block will be subtracted by
@@ -2901,6 +2906,12 @@ stg_setThreadAllocationCounterzh ( I64 counter )
return ();
}
+stg_setOtherThreadAllocationCounterzh ( I64 counter, gcptr t )
+{
+ StgTSO_alloc_limit(t) = counter;
+ return ();
+}
+
#define KEEP_ALIVE_FRAME_FIELDS(w_,p_,info_ptr,p1,p2,c) \
w_ info_ptr, \
=====================================
rts/RtsStartup.c
=====================================
@@ -224,6 +224,7 @@ static void initBuiltinGcRoots(void)
* GHC.Core.Make.mkExceptionId.
*/
getStablePtr((StgPtr)absentSumFieldError_closure);
+ getStablePtr((StgPtr)runAllocationLimitHandler_closure);
}
void
=====================================
rts/RtsSymbols.c
=====================================
@@ -916,7 +916,9 @@ extern char **environ;
SymI_HasDataProto(stg_traceMarkerzh) \
SymI_HasDataProto(stg_traceBinaryEventzh) \
SymI_HasDataProto(stg_getThreadAllocationCounterzh) \
+ SymI_HasDataProto(stg_getOtherThreadAllocationCounterzh) \
SymI_HasDataProto(stg_setThreadAllocationCounterzh) \
+ SymI_HasDataProto(stg_setOtherThreadAllocationCounterzh) \
SymI_HasProto(getMonotonicNSec) \
SymI_HasProto(lockFile) \
SymI_HasProto(unlockFile) \
=====================================
rts/Schedule.c
=====================================
@@ -41,6 +41,7 @@
#include "Threads.h"
#include "Timer.h"
#include "ThreadPaused.h"
+#include "ThreadLabels.h"
#include "Messages.h"
#include "StablePtr.h"
#include "StableName.h"
@@ -94,6 +95,10 @@ StgWord recent_activity = ACTIVITY_YES;
*/
StgWord sched_state = SCHED_RUNNING;
+
+bool allocLimitKill = true;
+bool allocLimitRunHook = false;
+
/*
* This mutex protects most of the global scheduler data in
* the THREADED_RTS runtime.
@@ -1125,19 +1130,36 @@ schedulePostRunThread (Capability *cap, StgTSO *t)
}
}
- //
- // If the current thread's allocation limit has run out, send it
- // the AllocationLimitExceeded exception.
+ // Handle the current thread's allocation limit running out,
if (PK_Int64((W_*)&(t->alloc_limit)) < 0 && (t->flags & TSO_ALLOC_LIMIT)) {
- // Use a throwToSelf rather than a throwToSingleThreaded, because
- // it correctly handles the case where the thread is currently
- // inside mask. Also the thread might be blocked (e.g. on an
- // MVar), and throwToSingleThreaded doesn't unblock it
- // correctly in that case.
- throwToSelf(cap, t, allocationLimitExceeded_closure);
- ASSIGN_Int64((W_*)&(t->alloc_limit),
- (StgInt64)RtsFlags.GcFlags.allocLimitGrace * BLOCK_SIZE);
+ if(allocLimitKill) {
+ // Throw the AllocationLimitExceeded exception.
+ // Use a throwToSelf rather than a throwToSingleThreaded, because
+ // it correctly handles the case where the thread is currently
+ // inside mask. Also the thread might be blocked (e.g. on an
+ // MVar), and throwToSingleThreaded doesn't unblock it
+ // correctly in that case.
+ throwToSelf(cap, t, allocationLimitExceeded_closure);
+ ASSIGN_Int64((W_*)&(t->alloc_limit),
+ (StgInt64)RtsFlags.GcFlags.allocLimitGrace * BLOCK_SIZE);
+ } else {
+ // If we aren't killing the thread, we must disable the limit
+ // otherwise we will immediatelly retrigger it.
+ // User defined handlers should re-enable it if wanted.
+ t->flags = t->flags & ~TSO_ALLOC_LIMIT;
+ }
+
+ if(allocLimitRunHook)
+ {
+ // Create a thread to run the allocation limit handler.
+ StgClosure* c = rts_apply(cap, runAllocationLimitHandler_closure, (StgClosure*)t);
+ StgTSO* hookThread = createIOThread(cap, RtsFlags.GcFlags.initialStkSize, c);
+ setThreadLabel(cap, hookThread, "allocation limit handler thread");
+ // Schedule the handler to be run immediatelly.
+ pushOnRunQueue(cap, hookThread);
+ }
+
}
/* some statistics gathering in the parallel case */
@@ -3342,3 +3364,9 @@ resurrectThreads (StgTSO *threads)
}
}
}
+
+void setAllocLimitKill(bool shouldKill, bool shouldHook)
+{
+ allocLimitKill = shouldKill;
+ allocLimitRunHook = shouldHook;
+}
=====================================
rts/external-symbols.list.in
=====================================
@@ -43,6 +43,7 @@ ghczminternal_GHCziInternalziTypes_Izh_con_info
ghczminternal_GHCziInternalziTypes_Fzh_con_info
ghczminternal_GHCziInternalziTypes_Dzh_con_info
ghczminternal_GHCziInternalziTypes_Wzh_con_info
+ghczminternal_GHCziInternalziAllocationLimitHandler_runAllocationLimitHandler_closure
ghczminternal_GHCziInternalziPtr_Ptr_con_info
ghczminternal_GHCziInternalziPtr_FunPtr_con_info
ghczminternal_GHCziInternalziInt_I8zh_con_info
=====================================
rts/include/rts/storage/GC.h
=====================================
@@ -209,6 +209,10 @@ void flushExec(W_ len, AdjustorExecutable exec_addr);
// Used by GC checks in external .cmm code:
extern W_ large_alloc_lim;
+// Should triggering an allocation limit kill the thread
+// and should we run a user-defined hook when it is triggered.
+void setAllocLimitKill(bool, bool);
+
/* -----------------------------------------------------------------------------
Performing Garbage Collection
-------------------------------------------------------------------------- */
=====================================
rts/include/rts/storage/TSO.h
=====================================
@@ -157,9 +157,10 @@ typedef struct StgTSO_ {
/*
* The allocation limit for this thread, which is updated as the
* thread allocates. If the value drops below zero, and
- * TSO_ALLOC_LIMIT is set in flags, we raise an exception in the
- * thread, and give the thread a little more space to handle the
- * exception before we raise the exception again.
+ * TSO_ALLOC_LIMIT is set in flags, then a handler is triggerd.
+ * Either we raise an exception in the thread, and give the thread
+ * a little more space to handle the exception before we raise the
+ * exception again; or we run a user defined handler.
*
* This is an integer, because we might update it in a place where
* it isn't convenient to raise the exception, so we want it to
=====================================
rts/include/stg/MiscClosures.h
=====================================
@@ -604,7 +604,9 @@ RTS_FUN_DECL(stg_traceEventzh);
RTS_FUN_DECL(stg_traceBinaryEventzh);
RTS_FUN_DECL(stg_traceMarkerzh);
RTS_FUN_DECL(stg_getThreadAllocationCounterzh);
+RTS_FUN_DECL(stg_getOtherThreadAllocationCounterzh);
RTS_FUN_DECL(stg_setThreadAllocationCounterzh);
+RTS_FUN_DECL(stg_setOtherThreadAllocationCounterzh);
RTS_FUN_DECL(stg_castWord64ToDoublezh);
RTS_FUN_DECL(stg_castDoubleToWord64zh);
=====================================
testsuite/tests/interface-stability/base-exports.stdout
=====================================
@@ -4607,6 +4607,7 @@ module GHC.Base where
sequence :: forall (m :: * -> *) a. Monad m => [m a] -> m [a]
setAddrRange# :: Addr# -> Int# -> Int# -> State# RealWorld -> State# RealWorld
setByteArray# :: forall d. MutableByteArray# d -> Int# -> Int# -> Int# -> State# d -> State# d
+ setOtherThreadAllocationCounter# :: Int64# -> ThreadId# -> State# RealWorld -> State# RealWorld
setThreadAllocationCounter# :: Int64# -> State# RealWorld -> State# RealWorld
shiftL# :: Word# -> Int# -> Word#
shiftRL# :: Word# -> Int# -> Word#
@@ -6693,6 +6694,7 @@ module GHC.Exts where
seq# :: forall a s. a -> State# s -> (# State# s, a #)
setAddrRange# :: Addr# -> Int# -> Int# -> State# RealWorld -> State# RealWorld
setByteArray# :: forall d. MutableByteArray# d -> Int# -> Int# -> Int# -> State# d -> State# d
+ setOtherThreadAllocationCounter# :: Int64# -> ThreadId# -> State# RealWorld -> State# RealWorld
setThreadAllocationCounter# :: Int64# -> State# RealWorld -> State# RealWorld
shiftL# :: Word# -> Int# -> Word#
shiftRL# :: Word# -> Int# -> Word#
=====================================
testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs
=====================================
@@ -4607,6 +4607,7 @@ module GHC.Base where
sequence :: forall (m :: * -> *) a. Monad m => [m a] -> m [a]
setAddrRange# :: Addr# -> Int# -> Int# -> State# RealWorld -> State# RealWorld
setByteArray# :: forall d. MutableByteArray# d -> Int# -> Int# -> Int# -> State# d -> State# d
+ setOtherThreadAllocationCounter# :: Int64# -> ThreadId# -> State# RealWorld -> State# RealWorld
setThreadAllocationCounter# :: Int64# -> State# RealWorld -> State# RealWorld
shiftL# :: Word# -> Int# -> Word#
shiftRL# :: Word# -> Int# -> Word#
@@ -6665,6 +6666,7 @@ module GHC.Exts where
seq# :: forall a s. a -> State# s -> (# State# s, a #)
setAddrRange# :: Addr# -> Int# -> Int# -> State# RealWorld -> State# RealWorld
setByteArray# :: forall d. MutableByteArray# d -> Int# -> Int# -> Int# -> State# d -> State# d
+ setOtherThreadAllocationCounter# :: Int64# -> ThreadId# -> State# RealWorld -> State# RealWorld
setThreadAllocationCounter# :: Int64# -> State# RealWorld -> State# RealWorld
shiftL# :: Word# -> Int# -> Word#
shiftRL# :: Word# -> Int# -> Word#
=====================================
testsuite/tests/interface-stability/base-exports.stdout-mingw32
=====================================
@@ -4610,6 +4610,7 @@ module GHC.Base where
sequence :: forall (m :: * -> *) a. Monad m => [m a] -> m [a]
setAddrRange# :: Addr# -> Int# -> Int# -> State# RealWorld -> State# RealWorld
setByteArray# :: forall d. MutableByteArray# d -> Int# -> Int# -> Int# -> State# d -> State# d
+ setOtherThreadAllocationCounter# :: Int64# -> ThreadId# -> State# RealWorld -> State# RealWorld
setThreadAllocationCounter# :: Int64# -> State# RealWorld -> State# RealWorld
shiftL# :: Word# -> Int# -> Word#
shiftRL# :: Word# -> Int# -> Word#
@@ -6836,6 +6837,7 @@ module GHC.Exts where
seq# :: forall a s. a -> State# s -> (# State# s, a #)
setAddrRange# :: Addr# -> Int# -> Int# -> State# RealWorld -> State# RealWorld
setByteArray# :: forall d. MutableByteArray# d -> Int# -> Int# -> Int# -> State# d -> State# d
+ setOtherThreadAllocationCounter# :: Int64# -> ThreadId# -> State# RealWorld -> State# RealWorld
setThreadAllocationCounter# :: Int64# -> State# RealWorld -> State# RealWorld
shiftL# :: Word# -> Int# -> Word#
shiftRL# :: Word# -> Int# -> Word#
=====================================
testsuite/tests/interface-stability/base-exports.stdout-ws-32
=====================================
@@ -4607,6 +4607,7 @@ module GHC.Base where
sequence :: forall (m :: * -> *) a. Monad m => [m a] -> m [a]
setAddrRange# :: Addr# -> Int# -> Int# -> State# RealWorld -> State# RealWorld
setByteArray# :: forall d. MutableByteArray# d -> Int# -> Int# -> Int# -> State# d -> State# d
+ setOtherThreadAllocationCounter# :: Int64# -> ThreadId# -> State# RealWorld -> State# RealWorld
setThreadAllocationCounter# :: Int64# -> State# RealWorld -> State# RealWorld
shiftL# :: Word# -> Int# -> Word#
shiftRL# :: Word# -> Int# -> Word#
@@ -6693,6 +6694,7 @@ module GHC.Exts where
seq# :: forall a s. a -> State# s -> (# State# s, a #)
setAddrRange# :: Addr# -> Int# -> Int# -> State# RealWorld -> State# RealWorld
setByteArray# :: forall d. MutableByteArray# d -> Int# -> Int# -> Int# -> State# d -> State# d
+ setOtherThreadAllocationCounter# :: Int64# -> ThreadId# -> State# RealWorld -> State# RealWorld
setThreadAllocationCounter# :: Int64# -> State# RealWorld -> State# RealWorld
shiftL# :: Word# -> Int# -> Word#
shiftRL# :: Word# -> Int# -> Word#
=====================================
testsuite/tests/interface-stability/ghc-experimental-exports.stdout
=====================================
@@ -5873,6 +5873,7 @@ module GHC.PrimOps where
seq# :: forall a s. a -> State# s -> (# State# s, a #)
setAddrRange# :: Addr# -> Int# -> Int# -> State# RealWorld -> State# RealWorld
setByteArray# :: forall d. MutableByteArray# d -> Int# -> Int# -> Int# -> State# d -> State# d
+ setOtherThreadAllocationCounter# :: Int64# -> ThreadId# -> State# RealWorld -> State# RealWorld
setThreadAllocationCounter# :: Int64# -> State# RealWorld -> State# RealWorld
shiftL# :: Word# -> Int# -> Word#
shiftRL# :: Word# -> Int# -> Word#
@@ -10916,6 +10917,16 @@ module Prelude.Experimental where
data Unit# = ...
getSolo :: forall a. Solo a -> a
+module System.Mem.Experimental where
+ -- Safety: None
+ type AllocationLimitKillBehaviour :: *
+ data AllocationLimitKillBehaviour = KillOnAllocationLimit | DontKillOnAllocationLimit
+ disableAllocationLimitFor :: GHC.Internal.Conc.Sync.ThreadId -> GHC.Internal.Types.IO ()
+ enableAllocationLimitFor :: GHC.Internal.Conc.Sync.ThreadId -> GHC.Internal.Types.IO ()
+ getAllocationCounterFor :: GHC.Internal.Conc.Sync.ThreadId -> GHC.Internal.Types.IO GHC.Internal.Int.Int64
+ setAllocationCounterFor :: GHC.Internal.Int.Int64 -> GHC.Internal.Conc.Sync.ThreadId -> GHC.Internal.Types.IO ()
+ setGlobalAllocationLimitHandler :: AllocationLimitKillBehaviour -> GHC.Internal.Maybe.Maybe (GHC.Internal.Conc.Sync.ThreadId -> GHC.Internal.Types.IO ()) -> GHC.Internal.Types.IO ()
+
-- Instances:
instance GHC.Internal.Base.Alternative GHC.Internal.Types.IO -- Defined in ‘GHC.Internal.Base’
=====================================
testsuite/tests/interface-stability/ghc-experimental-exports.stdout-mingw32
=====================================
@@ -5876,6 +5876,7 @@ module GHC.PrimOps where
seq# :: forall a s. a -> State# s -> (# State# s, a #)
setAddrRange# :: Addr# -> Int# -> Int# -> State# RealWorld -> State# RealWorld
setByteArray# :: forall d. MutableByteArray# d -> Int# -> Int# -> Int# -> State# d -> State# d
+ setOtherThreadAllocationCounter# :: Int64# -> ThreadId# -> State# RealWorld -> State# RealWorld
setThreadAllocationCounter# :: Int64# -> State# RealWorld -> State# RealWorld
shiftL# :: Word# -> Int# -> Word#
shiftRL# :: Word# -> Int# -> Word#
@@ -10919,6 +10920,16 @@ module Prelude.Experimental where
data Unit# = ...
getSolo :: forall a. Solo a -> a
+module System.Mem.Experimental where
+ -- Safety: None
+ type AllocationLimitKillBehaviour :: *
+ data AllocationLimitKillBehaviour = KillOnAllocationLimit | DontKillOnAllocationLimit
+ disableAllocationLimitFor :: GHC.Internal.Conc.Sync.ThreadId -> GHC.Internal.Types.IO ()
+ enableAllocationLimitFor :: GHC.Internal.Conc.Sync.ThreadId -> GHC.Internal.Types.IO ()
+ getAllocationCounterFor :: GHC.Internal.Conc.Sync.ThreadId -> GHC.Internal.Types.IO GHC.Internal.Int.Int64
+ setAllocationCounterFor :: GHC.Internal.Int.Int64 -> GHC.Internal.Conc.Sync.ThreadId -> GHC.Internal.Types.IO ()
+ setGlobalAllocationLimitHandler :: AllocationLimitKillBehaviour -> GHC.Internal.Maybe.Maybe (GHC.Internal.Conc.Sync.ThreadId -> GHC.Internal.Types.IO ()) -> GHC.Internal.Types.IO ()
+
-- Instances:
instance GHC.Internal.Base.Alternative GHC.Internal.Types.IO -- Defined in ‘GHC.Internal.Base’
=====================================
testsuite/tests/interface-stability/ghc-prim-exports.stdout
=====================================
@@ -2505,6 +2505,7 @@ module GHC.Prim where
seq :: forall {r :: GHC.Internal.Types.RuntimeRep} a (b :: TYPE r). a -> b -> b
setAddrRange# :: Addr# -> Int# -> Int# -> State# RealWorld -> State# RealWorld
setByteArray# :: forall d. MutableByteArray# d -> Int# -> Int# -> Int# -> State# d -> State# d
+ setOtherThreadAllocationCounter# :: Int64# -> ThreadId# -> State# RealWorld -> State# RealWorld
setThreadAllocationCounter# :: Int64# -> State# RealWorld -> State# RealWorld
shrinkMutableByteArray# :: forall d. MutableByteArray# d -> Int# -> State# d -> State# d
shrinkSmallMutableArray# :: forall {l :: GHC.Internal.Types.Levity} d (a :: TYPE (GHC.Internal.Types.BoxedRep l)). SmallMutableArray# d a -> Int# -> State# d -> State# d
@@ -3489,6 +3490,7 @@ module GHC.PrimopWrappers where
retry# :: forall a_levpoly. GHC.Internal.Prim.State# GHC.Internal.Prim.RealWorld -> (# GHC.Internal.Prim.State# GHC.Internal.Prim.RealWorld, a_levpoly #)
setAddrRange# :: GHC.Internal.Prim.Addr# -> GHC.Internal.Prim.Int# -> GHC.Internal.Prim.Int# -> GHC.Internal.Prim.State# GHC.Internal.Prim.RealWorld -> GHC.Internal.Prim.State# GHC.Internal.Prim.RealWorld
setByteArray# :: forall s. GHC.Internal.Prim.MutableByteArray# s -> GHC.Internal.Prim.Int# -> GHC.Internal.Prim.Int# -> GHC.Internal.Prim.Int# -> GHC.Internal.Prim.State# s -> GHC.Internal.Prim.State# s
+ setOtherThreadAllocationCounter# :: GHC.Internal.Prim.Int64# -> GHC.Internal.Prim.ThreadId# -> GHC.Internal.Prim.State# GHC.Internal.Prim.RealWorld -> GHC.Internal.Prim.State# GHC.Internal.Prim.RealWorld
setThreadAllocationCounter# :: GHC.Internal.Prim.Int64# -> GHC.Internal.Prim.State# GHC.Internal.Prim.RealWorld -> GHC.Internal.Prim.State# GHC.Internal.Prim.RealWorld
shrinkMutableByteArray# :: forall s. GHC.Internal.Prim.MutableByteArray# s -> GHC.Internal.Prim.Int# -> GHC.Internal.Prim.State# s -> GHC.Internal.Prim.State# s
shrinkSmallMutableArray# :: forall s a_levpoly. GHC.Internal.Prim.SmallMutableArray# s a_levpoly -> GHC.Internal.Prim.Int# -> GHC.Internal.Prim.State# s -> GHC.Internal.Prim.State# s
=====================================
testsuite/tests/interface-stability/ghc-prim-exports.stdout-mingw32
=====================================
@@ -2505,6 +2505,7 @@ module GHC.Prim where
seq :: forall {r :: GHC.Internal.Types.RuntimeRep} a (b :: TYPE r). a -> b -> b
setAddrRange# :: Addr# -> Int# -> Int# -> State# RealWorld -> State# RealWorld
setByteArray# :: forall d. MutableByteArray# d -> Int# -> Int# -> Int# -> State# d -> State# d
+ setOtherThreadAllocationCounter# :: Int64# -> ThreadId# -> State# RealWorld -> State# RealWorld
setThreadAllocationCounter# :: Int64# -> State# RealWorld -> State# RealWorld
shrinkMutableByteArray# :: forall d. MutableByteArray# d -> Int# -> State# d -> State# d
shrinkSmallMutableArray# :: forall {l :: GHC.Internal.Types.Levity} d (a :: TYPE (GHC.Internal.Types.BoxedRep l)). SmallMutableArray# d a -> Int# -> State# d -> State# d
@@ -3492,6 +3493,7 @@ module GHC.PrimopWrappers where
retry# :: forall a_levpoly. GHC.Internal.Prim.State# GHC.Internal.Prim.RealWorld -> (# GHC.Internal.Prim.State# GHC.Internal.Prim.RealWorld, a_levpoly #)
setAddrRange# :: GHC.Internal.Prim.Addr# -> GHC.Internal.Prim.Int# -> GHC.Internal.Prim.Int# -> GHC.Internal.Prim.State# GHC.Internal.Prim.RealWorld -> GHC.Internal.Prim.State# GHC.Internal.Prim.RealWorld
setByteArray# :: forall s. GHC.Internal.Prim.MutableByteArray# s -> GHC.Internal.Prim.Int# -> GHC.Internal.Prim.Int# -> GHC.Internal.Prim.Int# -> GHC.Internal.Prim.State# s -> GHC.Internal.Prim.State# s
+ setOtherThreadAllocationCounter# :: GHC.Internal.Prim.Int64# -> GHC.Internal.Prim.ThreadId# -> GHC.Internal.Prim.State# GHC.Internal.Prim.RealWorld -> GHC.Internal.Prim.State# GHC.Internal.Prim.RealWorld
setThreadAllocationCounter# :: GHC.Internal.Prim.Int64# -> GHC.Internal.Prim.State# GHC.Internal.Prim.RealWorld -> GHC.Internal.Prim.State# GHC.Internal.Prim.RealWorld
shrinkMutableByteArray# :: forall s. GHC.Internal.Prim.MutableByteArray# s -> GHC.Internal.Prim.Int# -> GHC.Internal.Prim.State# s -> GHC.Internal.Prim.State# s
shrinkSmallMutableArray# :: forall s a_levpoly. GHC.Internal.Prim.SmallMutableArray# s a_levpoly -> GHC.Internal.Prim.Int# -> GHC.Internal.Prim.State# s -> GHC.Internal.Prim.State# s
=====================================
testsuite/tests/rts/T22859.hs
=====================================
@@ -0,0 +1,72 @@
+{-# LANGUAGE NumericUnderscores #-}
+{-# LANGUAGE MagicHash #-}
+{-# LANGUAGE UnboxedTuples #-}
+
+import Control.Exception
+import Control.Exception.Backtrace
+import Control.Concurrent
+import Control.Concurrent.MVar
+import System.Mem
+import System.Mem.Experimental
+import GHC.IO (IO (..))
+import GHC.Exts
+import System.IO
+
+-- | Just do some work and hPutStrLn to stderr to indicate that we are making progress
+worker :: IO ()
+worker = loop [] 2
+ where
+ loop !m !n
+ | n > 30 = hPutStrLn stderr . show $ length m
+ | otherwise = do
+ let x = show n
+ hPutStrLn stderr x
+ -- just to bulk out the allocations
+ IO (\s -> case newByteArray# 900000# s of (# s', arr# #) -> (# s', () #))
+ yield
+ loop (x:m) (n + 1)
+
+main :: IO ()
+main = do
+ hSetBuffering stderr LineBuffering -- necessary for Windows, otherwise our output gets garbled
+ done <- newMVar () -- we use this lock to wait for the worker to finish
+ started <- newEmptyMVar
+ let runWorker = do
+ forkIO . withMVar done $ \_ -> flip onException (hPutStrLn stderr "worker died") $ do
+ hPutStrLn stderr "worker starting"
+ putMVar started ()
+ setAllocationCounter 1_000_000
+ enableAllocationLimit
+ worker
+ hPutStrLn stderr "worker done"
+ takeMVar started
+ readMVar done
+ hFlush stderr
+ threadDelay 1000
+ -- default behaviour:
+ -- kill it after the limit is exceeded
+ hPutStrLn stderr "default behaviour"
+ runWorker
+ hPutStrLn stderr "just log once on the hook being triggered"
+ setGlobalAllocationLimitHandler DontKillOnAllocationLimit (Just $ \_ -> hPutStrLn stderr "allocation limit triggered 1")
+ runWorker
+ hPutStrLn stderr "just log on the hook being triggered"
+ setGlobalAllocationLimitHandler DontKillOnAllocationLimit . Just $ \tid -> do
+ hPutStrLn stderr "allocation limit triggered 2"
+ -- re-enable the hook
+ setAllocationCounterFor 1_000_000 tid
+ enableAllocationLimitFor tid
+ runWorker
+ hPutStrLn stderr "kill from the hook"
+ setGlobalAllocationLimitHandler DontKillOnAllocationLimit . Just $ \tId -> throwTo tId AllocationLimitExceeded
+ runWorker
+ -- not super helpful, but let's test it anyway
+ hPutStrLn stderr "do nothing"
+ setGlobalAllocationLimitHandler DontKillOnAllocationLimit Nothing
+ runWorker
+ -- this is possible to handle using an exception handler instead.
+ hPutStrLn stderr "kill and log"
+ setGlobalAllocationLimitHandler KillOnAllocationLimit (Just $ \_ -> hPutStrLn stderr "allocation limit triggered 3")
+ runWorker
+ threadDelay 1000
+ hPutStrLn stderr "done"
=====================================
testsuite/tests/rts/T22859.stderr
=====================================
@@ -0,0 +1,140 @@
+default behaviour
+worker starting
+2
+3
+worker died
+T22859: Uncaught exception ghc-internal:GHC.Internal.IO.Exception.SomeAsyncException:
+
+allocation limit exceeded
+just log once on the hook being triggered
+worker starting
+2
+3
+allocation limit triggered 1
+4
+5
+6
+7
+8
+9
+10
+11
+12
+13
+14
+15
+16
+17
+18
+19
+20
+21
+22
+23
+24
+25
+26
+27
+28
+29
+30
+29
+worker done
+just log on the hook being triggered
+worker starting
+2
+3
+allocation limit triggered 2
+4
+5
+allocation limit triggered 2
+6
+7
+allocation limit triggered 2
+8
+9
+allocation limit triggered 2
+10
+11
+allocation limit triggered 2
+12
+13
+allocation limit triggered 2
+14
+15
+allocation limit triggered 2
+16
+17
+allocation limit triggered 2
+18
+19
+allocation limit triggered 2
+20
+21
+allocation limit triggered 2
+22
+23
+allocation limit triggered 2
+24
+25
+allocation limit triggered 2
+26
+27
+allocation limit triggered 2
+28
+29
+allocation limit triggered 2
+30
+29
+worker done
+kill from the hook
+worker starting
+2
+3
+worker died
+T22859: Uncaught exception ghc-internal:GHC.Internal.IO.Exception.SomeAsyncException:
+
+allocation limit exceeded
+do nothing
+worker starting
+2
+3
+4
+5
+6
+7
+8
+9
+10
+11
+12
+13
+14
+15
+16
+17
+18
+19
+20
+21
+22
+23
+24
+25
+26
+27
+28
+29
+30
+29
+worker done
+kill and log
+worker starting
+2
+3
+allocation limit triggered 3
+worker died
+T22859: Uncaught exception ghc-internal:GHC.Internal.IO.Exception.SomeAsyncException:
+
+allocation limit exceeded
+done
=====================================
testsuite/tests/rts/all.T
=====================================
@@ -643,3 +643,4 @@ test('T25280', [unless(opsys('linux'),skip),req_process,js_skip], compile_and_ru
test('T25560', [req_c_rts, ignore_stderr], compile_and_run, [''])
test('TestProddableBlockSet', [req_c_rts], multimod_compile_and_run, ['TestProddableBlockSet.c', '-no-hs-main'])
+test('T22859', [js_skip], compile_and_run, ['-with-rtsopts -A8K'])
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/630902aff8f2807e3e81091f73b4c02…
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/630902aff8f2807e3e81091f73b4c02…
You're receiving this email because of your account on gitlab.haskell.org.
1
0
[Git][ghc/ghc][wip/marge_bot_batch_merge_job] 2 commits: fix some typos in the warnings page in the user guide
by Marge Bot (＠marge-bot) 17 Jun '25
by Marge Bot (＠marge-bot) 17 Jun '25
17 Jun '25
Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC
Commits:
b5883cee by Lauren Yim at 2025-06-17T16:46:12-04:00
fix some typos in the warnings page in the user guide
- - - - -
4b0c0cd1 by Rodrigo Mesquita at 2025-06-17T16:46:13-04:00
Add a frozen callstack to throwGhcException
Fixes #25956
- - - - -
2 changed files:
- compiler/GHC/Utils/Panic.hs
- docs/users_guide/using-warnings.rst
Changes:
=====================================
compiler/GHC/Utils/Panic.hs
=====================================
@@ -177,7 +177,7 @@ showGhcException ctx = showPlainGhcException . \case
PprProgramError str sdoc -> PlainProgramError $
concat [str, "\n\n", renderWithContext ctx sdoc]
-throwGhcException :: GhcException -> a
+throwGhcException :: HasCallStack => GhcException -> a
throwGhcException = Exception.throw
throwGhcExceptionIO :: GhcException -> IO a
@@ -192,7 +192,7 @@ pprPanic s doc = withFrozenCallStack $ panicDoc s (doc $$ callStackDoc)
-- | Throw an exception saying "bug in GHC"
panicDoc :: HasCallStack => String -> SDoc -> a
-panicDoc x doc = throwGhcException (PprPanic x doc)
+panicDoc x doc = withFrozenCallStack $ throwGhcException (PprPanic x doc)
-- | Throw an exception saying "this isn't finished yet"
sorryDoc :: String -> SDoc -> a
=====================================
docs/users_guide/using-warnings.rst
=====================================
@@ -2536,7 +2536,7 @@ of ``-W(no-)*``.
:since: 9.8.1
- Ino accordance with `GHC Proposal #134
+ In accordance with `GHC Proposal #134
<https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0134-d…>`__,
it is now possible to deprecate certain exports of a name without deprecating the name itself.
@@ -2556,8 +2556,8 @@ of ``-W(no-)*``.
)
import A
- When :ghc-flag:`-Wincomplete-export-warnings` is enabled, GHC warns about exports
- that are not deprecating a name that is deprecated with another export in that module.
+ When :ghc-flag:`-Wincomplete-export-warnings` is enabled, GHC warns about exports
+ that are not deprecating a name that is deprecated with another export in that module.
.. ghc-flag:: -Wbadly-levelled-types
:shortdesc: warn when type binding is used at the wrong Template Haskell level.
@@ -2630,7 +2630,7 @@ of ``-W(no-)*``.
:since: 9.10.1
Introduced in GHC 9.10.1 with the introduction of an implicit
- :base-ref:`Control.Exception.Context.ExceptionContext`` context to
+ :base-ref:`Control.Exception.Context.ExceptionContext` context to
:base-ref:`Control.Exception.SomeException`. To preserve compatibility
with earlier compilers, this constraints is implicitly defaulted to
:base-ref:`Control.Exception.Context.emptyExceptionContext` when no other
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/6c833f3ea06403ea09db19937b9a00…
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/6c833f3ea06403ea09db19937b9a00…
You're receiving this email because of your account on gitlab.haskell.org.
1
0
[Git][ghc/ghc][wip/T25282] Expose ghc-internal unit id through the settings file
by Teo Camarasu (＠teo) 17 Jun '25
by Teo Camarasu (＠teo) 17 Jun '25
17 Jun '25
Teo Camarasu pushed to branch wip/T25282 at Glasgow Haskell Compiler / GHC
Commits:
2adf62c5 by Teo Camarasu at 2025-06-17T20:25:34+01:00
Expose ghc-internal unit id through the settings file
This in combination with the unit id of the compiler library allows
cabal to know of the two unit ids that should not be reinstalled (in
specific circumstances) as:
- when using plugins, we want to link against exactly the compiler unit
id
- when using TemplateHaskell we want to link against exactly the package
that contains the TemplateHaskell interfaces, which is `ghc-internal`
See: <https://github.com/haskell/cabal/issues/10087>
Resolves #25282
- - - - -
1 changed file:
- compiler/GHC/Driver/Session.hs
Changes:
=====================================
compiler/GHC/Driver/Session.hs
=====================================
@@ -3459,6 +3459,7 @@ compilerInfo dflags
("Project Patch Level1", cProjectPatchLevel1),
("Project Patch Level2", cProjectPatchLevel2),
("Project Unit Id", cProjectUnitId),
+ ("ghc-internal Unit Id", unitIdString ghcInternalUnitId), -- See Note [Special unit-ids]
("Booter version", cBooterVersion),
("Stage", cStage),
("Build platform", cBuildPlatformString),
@@ -3512,6 +3513,23 @@ compilerInfo dflags
expandDirectories :: FilePath -> Maybe FilePath -> String -> String
expandDirectories topd mtoold = expandToolDir useInplaceMinGW mtoold . expandTopDir topd
+-- Note [Special unit-ids]
+-- ~~~~~~~~~~~~~~~~~~~~~~~
+-- Certain units are special to the compiler:
+-- - Wired-in identifiers reference a specific unit-id of `ghc-internal`.
+-- - GHC plugins must be linked against a specific unit-id of `ghc`,
+-- namely the same one as the compiler.
+-- - When using Template Haskell, splices refer to the Template Haskell
+-- interface defined in `ghc-internal`, and must be linked against the same
+-- unit-id as the compiler.
+--
+-- We therefore expose the unit-id of `ghc-internal` ("ghc-internal Unit Id") and
+-- ghc ("Project Unit Id") through `ghc --info`.
+--
+-- This allows build tools to act accordingly, eg, if a user wishes to build a
+-- GHC plugin, `cabal-install` might force them to use the exact `ghc` unit
+-- that the compiler was linked against.
+
{- -----------------------------------------------------------------------------
Note [DynFlags consistency]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/2adf62c5e2e5f5a920d621a57708520…
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/2adf62c5e2e5f5a920d621a57708520…
You're receiving this email because of your account on gitlab.haskell.org.
1
0
[Git][ghc/ghc][wip/T25282] 128 commits: Retry type/class declarations and instances (#12088)
by Teo Camarasu (＠teo) 17 Jun '25
by Teo Camarasu (＠teo) 17 Jun '25
17 Jun '25
Teo Camarasu pushed to branch wip/T25282 at Glasgow Haskell Compiler / GHC
Commits:
5712e0d6 by Vladislav Zavialov at 2025-04-10T05:17:38+00:00
Retry type/class declarations and instances (#12088)
Retry type/class declarations and instances to account for non-lexical
dependencies arising from type/data family instances.
This patch improves the kind checker's ability to use type instances in kind
checking of other declarations in the same module.
* Key change: tcTyAndClassDecls now does multiple passes over the TyClGroups,
as long as it is able to make progress.
See the new Note [Retrying TyClGroups] in GHC.Tc.TyCl
* Supporting change: FVs of a TyClGroup are now recorded in its extension
field, namely XCTyClGroup.
See the new Note [Prepare TyClGroup FVs] in GHC.Rename.Module
* Instances are no longer inserted at the earliest positions where their FVs
are bound. This is a simplification.
See the new Note [Put instances at the end] in GHC.Rename.Module
* Automatic unpacking is now more predictable, but fewer fields get unpacked
by default. Use explicit {-# UNPACK #-} pragmas instead.
See the new Note [Flaky -funbox-strict-fields with type/data families]
For the wide range of newly accepted programs, consult the added test cases.
Fixed tickets:
#12088, #12239, #14668, #15561, #16410, #16448, #16693,
#19611, #20875, #21172, #22257, #25238, #25834
Metric Decrease:
T8095
- - - - -
bc73a78d by sheaf at 2025-04-10T15:07:24-04:00
checkFamApp: don't be so eager to cycle break
As remarked in #25933, a pure refactoring of checkTyEqRhs in
ab77fc8c7adebd610aa0bd99d653f9a6cc78a374 inadvertently changed behaviour,
as it caused GHC to introduce cycle-breaker variables in some
unnecessary circumstances.
This commit refactors 'GHC.Tc.Utils.Unify.checkFamApp' in a way that
should restore the old behaviour, so that, when possible, we first
recur into the arguments and only introduce a cycle breaker if this
recursion fails (e.g. due to an occurs check failure).
Fixes #25933
- - - - -
3acd8182 by Andreas Klebinger at 2025-04-10T22:32:12-04:00
Expand docs for RTS flag `-M`.
The behaviour of how/when exceptions are raised was not really covered
in the docs.
- - - - -
026c1a39 by Adam Sandberg Ericsson at 2025-04-10T22:32:56-04:00
add cases for more SchedulerStatus codes in rts_checkSchedStatus
- - - - -
5977c6a1 by sheaf at 2025-04-10T22:33:46-04:00
Squash warnings in GHC.Runtime.Heap.Inspect
There were incomplete record selector warnings in GHC.Runtime.Heap.Inspect
due to the use of the partial 'dataArgs' record selector. This is fixed
by passing the fields to the 'extractSubTerms' function directly,
rather than passing a value of the parent data type.
- - - - -
6a3e38f5 by Andreas Klebinger at 2025-04-11T15:13:53-04:00
hadrian: Make ghcWithInterpreter the universal source of truth about availability of the interpreter
We were doing some ad-hoc checks in different places in hadrian to
determine whether we supported the interprter or not. Now this check if
confined to one function, `ghcWithInterpreter`, and all the places which
use this information consult `ghcWithInterpreter` to determine what to
do.
Fixes #25533.
- - - - -
207de6f1 by Matthew Pickering at 2025-04-11T15:14:37-04:00
testsuite: Fix running TH tests with profiled dynamic compiler
Previously, I had failed to update the ghc_th_way_flags logic for the
profiled dynamic compiler.
In addition to this `ghc_dynamic` was incorrectly set for profiled
dynamic compiler.
I also updated MultiLayerModulesTH_OneShot test to work for any compiler
linkage rather than just dynamic.
Fixes #25947
-------------------------
Metric Decrease:
MultiLayerModulesTH_Make
-------------------------
- - - - -
5455f2b9 by Matthew Pickering at 2025-04-12T08:31:36-04:00
driver: Add support for "Fixed" nodes in the ModuleGraph
A fixed node in the module graph is one which we presume is already
built. It's therefore up to the user to make sure that the interface
file and any relevant artifacts are available for a fixed node.
Fixed/Compile nodes are represented by the ModuleNodeInfo type, which
abstracts the common parts of Fixed/Compile nodes with accessor
functions of type `ModuleNodeInfo -> ...`.
Fixed nodes can only depend on other fixed nodes. This invariant can be
checked by the function `checkModuleGraph` or `mkModuleGraphChecked`.
--make mode is modified to work with fixed mode. In order to "compile" a
fixed node, the artifacts are just loaded into the HomePackageTable.
Currently nothing in the compiler will produce Fixed nodes but this is
tested with the FixedNodes GHC API test.
In subsequent patches we are going to remove the ExternalModuleGraph and
use Fixed nodes for modules in the module graph in oneshot mode.
Fixes #25920
- - - - -
ad64d5c2 by Cheng Shao at 2025-04-12T08:32:19-04:00
ci: remove manual case of ghc-wasm-meta downstream testing jobs
This patch removes the manual case of ghc-wasm-meta downstream testing
jobs; now the only way of including them in the pipeline and running
them is via the test-wasm label.
The reason of the removal is it proves to be problematic for MRs with
only the wasm label; the wasm job would succeed, then the pipeline
status would be waiting for manual action instead of succeeding. There
needs to be separate jobs for the label-triggered and manual-triggered
cases, but I don't think it's worth that extra complexity, the
label-triggered case is already sufficient.
- - - - -
b34890c7 by Vladislav Zavialov at 2025-04-13T01:08:21+03:00
Fix EmptyCase panic in tcMatches (#25960)
Due to faulty reasoning in Note [Pattern types for EmptyCase],
tcMatches was too keen to panic.
* Old (incorrect) assumption: pat_tys is a singleton list.
This does not hold when \case{} is checked against a function type
preceded by invisible forall. See the new T25960 test case.
* New (hopefully correct) assumption: vis_pat_tys is a singleton list.
This should follow from:
checkArgCounts :: MatchGroup GhcRn ... -> TcM VisArity
checkArgCounts (MG { mg_alts = L _ [] })
= return 1
...
- - - - -
84806ebc by Vladislav Zavialov at 2025-04-13T11:40:08-04:00
Remove unused type: TokenLocation
- - - - -
05eb50df by Vladislav Zavialov at 2025-04-13T19:16:38-04:00
Register EpToken in Parser.PostProcess.Haddock (#22558)
This change allows us to reject more badly placed Haddock comments.
Examples:
module
-- | Bad comment for the module
T17544_kw where
data Foo -- | Bad comment for MkFoo
where MkFoo :: Foo
newtype Bar -- | Bad comment for MkBar
where MkBar :: () -> Bar
class Cls a
-- | Bad comment for clsmethod
where
clsmethod :: a
- - - - -
01944e5e by Vladislav Zavialov at 2025-04-13T19:17:21-04:00
Reject puns in T2T (#24153)
This patch implements pun detection in T2T. Consider:
x = 42
f, g :: forall a -> ...
f (type x) = g x
In accordance with the specification, the `g x` function call is renamed
as a term, so `x` refers to the top-level binding `x = 42`, not to the
type variable binding `type x` as one might expect.
This is somewhat counterintuitive because `g` expects a type argument.
Forbidding puns in T2T allows us to produce a helpful error message:
Test.hs:5:16: error: [GHC-09591]
Illegal punned variable occurrence in a required type argument.
The name ‘x’ could refer to:
‘x’ defined at Test.hs:3:1
‘x’ bound at Test.hs:5:9
This commit is a follow up to 0dfb1fa799af254c8a1e1045fc3996af2d57a613
where checking for puns was left as future work.
- - - - -
cc580552 by Vladislav Zavialov at 2025-04-13T19:18:02-04:00
Additional test cases for #12088, #13790
Extract more test cases from ticket discussions, including multi-module
examples. Follow up to 5712e0d646f611dfbfedfd7ef6dff3a18c016edb
- - - - -
d47bf776 by Matthew Pickering at 2025-04-14T16:44:41+01:00
driver: Use ModuleGraph for oneshot and --make mode
This patch uses the `hsc_mod_graph` field for both oneshot and --make
mode. Therefore, if part of the compiler requires usage of the module
graph, you do so in a uniform way for the two different modes.
The `ModuleGraph` describes the relationship between the modules in the
home package and units in external packages. The `ModuleGraph` can be
queried when information about the transitive closure of a package is
needed. For example, the primary use of the ModuleGraph from within the
compiler is in the loader, which needs to know the transitive closure of
a module so it can load all the relevant objects for evaluation.
In --make mode, downsweep computes the ModuleGraph before any
compilation starts.
In oneshot mode, a thunk is created at the start of compilation, which
when forced will compute the module graph beneath the current module.
The thunk is only forced at the moment when the user uses Template
Haskell.
Finally, there are some situations where we need to discover what
dependencies to load but haven't loaded a module graph at all. In this
case, there is a fallback which computes the transitive closure on the
fly and doesn't cache the result. Presumably if you are going to call
getLinkDeps a lot, you would compute the right ModuleGraph before you
started.
Importantly, this removes the ExternalModuleGraph abstraction. This was quite
awkward to work with since it stored information about the home package
inside the EPS.
This patch will also be very useful when implementing explicit level
imports, which requires more significant use of the module graph in
order to determine which level instances are available at.
Towards #25795
-------------------------
Metric Decrease:
MultiLayerModulesTH_Make
MultiLayerModulesTH_OneShot
-------------------------
- - - - -
395e0ad1 by sheaf at 2025-04-16T12:33:26-04:00
base: remove .Internal modules (e.g. GHC.TypeLits)
This commit removes the following internal modules from base,
as per CLC proposal 217:
- GHC.TypeNats.Internal
- GHC.TypeLits.Internal
- GHC.ExecutionStack.Internal
Fixes #25007
- - - - -
e0f3ff11 by Patrick at 2025-04-17T04:31:12-04:00
Refactor Handling of Multiple Default Declarations
Fixes: #25912, #25914, #25934
Previously, GHC discarded all loaded defaults (tcg_default) when local
defaults were encountered during typechecking. According to the
exportable-named-default proposal (sections 2.4.2 and 2.4.3), local
defaults should be merged into tcg_default, retaining any defaults
already present while overriding where necessary.
Key Changes:
* Introduce DefaultProvenance to track the origin of default declarations
(local, imported, or built-in), replacing the original cd_module
in ClassDefaults with cd_provenance :: DefaultProvenance.
* Rename tcDefaults to tcDefaultDecls, limiting its responsibility to only
converting renamed class defaults into ClassDefaults.
* Add extendDefaultEnvWithLocalDefaults to merge local defaults into the
environment, with proper duplication checks:
- Duplicate local defaults for a class trigger an error.
- Local defaults override imported or built-in defaults.
* Update and add related notes: Note [Builtin class defaults],
Note [DefaultProvenance].
* Add regression tests: T25912, T25914, T25934.
Thanks sam and simon for the help on this patch.
Co-authored-by: sheaf <sam.derbyshire(a)gmail.com>
- - - - -
386f1854 by Teo Camarasu at 2025-04-17T04:31:55-04:00
template-haskell: Remove `addrToByteArrayName` and `addrToByteArray`
These were part of the implementation of the `Lift ByteArray` instance and were errornously exported because this module lacked an explicit export list. They have no usages on Hackage.
Resolves #24782
- - - - -
b96e2f77 by Sylvain Henry at 2025-04-18T20:46:33-04:00
RTS: remove target info and fix host info (#24058)
The RTS isn't a compiler, hence it doesn't have a target and we remove
the reported target info displayed by "+RTS --info". We also fix the
host info displayed by "+RTS --info": the host of the RTS is the
RTS-building compiler's target, not the compiler's host (wrong when
doing cross-compilation).
- - - - -
6d9965f4 by Sylvain Henry at 2025-04-18T20:46:33-04:00
RTS: remove build info
As per the discussion in !13967, there is no reason to tag the RTS with
information about the build platform.
- - - - -
d52e9b3f by Vladislav Zavialov at 2025-04-18T20:47:15-04:00
Diagnostics: remove the KindMismatch constructor (#25957)
The KindMismatch constructor was only used as an intermediate
representation in pretty-printing.
Its removal addresses a problem detected by the "codes" test case:
[GHC-89223] is untested (constructor = KindMismatch)
In a concious deviation from the usual procedure, the error code
GHC-89223 is removed entirely rather than marked as Outdated.
The reason is that it never was user-facing in the first place.
- - - - -
e2f2f9d0 by Vladislav Zavialov at 2025-04-20T10:53:39-04:00
Add name for -Wunusable-unpack-pragmas
This warning had no name or flag and was triggered unconditionally.
Now it is part of -Wdefault.
In GHC.Tc.TyCl.tcTyClGroupsPass's strict mode, we now have to
force-enable this warning to ensure that detection of flawed groups
continues to work even if the user disables the warning with the
-Wno-unusable-unpack-pragmas option. Test case: T3990c
Also, the misnamed BackpackUnpackAbstractType is now called
UnusableUnpackPragma.
- - - - -
6caa6508 by Adam Gundry at 2025-04-20T10:54:22-04:00
Fix specialisation of incoherent instances (fixes #25883)
GHC normally assumes that class constraints are canonical, meaning that
the specialiser is allowed to replace one dictionary argument with another
provided that they have the same type. The `-fno-specialise-incoherents`
flag alters INCOHERENT instance definitions so that they will prevent
specialisation in some cases, by inserting `nospec`.
This commit fixes a bug in 7124e4ad76d98f1fc246ada4fd7bf64413ff2f2e, which
treated some INCOHERENT instance matches as if `-fno-specialise-incoherents`
was in effect, thereby unnecessarily preventing specialisation. In addition
it updates the relevant `Note [Rules for instance lookup]` and adds a new
`Note [Canonicity for incoherent matches]`.
- - - - -
0426fd6c by Adam Gundry at 2025-04-20T10:54:23-04:00
Add regression test for #23429
- - - - -
eec96527 by Adam Gundry at 2025-04-20T10:54:23-04:00
user's guide: update specification of overlapping/incoherent instances
The description of the instance resolution algorithm in the user's
guide was slightly out of date, because it mentioned in-scope given
constraints only at the end, whereas the implementation checks for
their presence before any of the other steps.
This also adds a warning to the user's guide about the impact of
incoherent instances on specialisation, and more clearly documents
some of the other effects of `-XIncoherentInstances`.
- - - - -
a00eeaec by Matthew Craven at 2025-04-20T10:55:03-04:00
Fix bytecode generation for `tagToEnum# <LITERAL>`
Fixes #25975.
- - - - -
2e204269 by Andreas Klebinger at 2025-04-22T12:20:41+02:00
Simplifier: Constant fold invald tagToEnum# calls to bottom expr.
When applying tagToEnum# to a out-of-range value it's best to simply
constant fold it to a bottom expression. That potentially allows more
dead code elimination and makes debugging easier.
Fixes #25976
- - - - -
7250fc0c by Matthew Pickering at 2025-04-22T16:24:04-04:00
Move -fno-code note into Downsweep module
This note was left behind when all the code which referred to it was
moved into the GHC.Driver.Downsweep module
- - - - -
d2dc89b4 by Matthew Pickering at 2025-04-22T16:24:04-04:00
Apply editing notes to Note [-fno-code mode] suggested by sheaf
These notes were suggested in https://gitlab.haskell.org/ghc/ghc/-/merge_requests/14241
- - - - -
91564daf by Matthew Pickering at 2025-04-24T00:29:02-04:00
ghci: Use loadInterfaceForModule rather than loadSrcInterface in mkTopLevEnv
loadSrcInterface takes a user given `ModuleName` and resolves it to the
module which needs to be loaded (taking into account module
renaming/visibility etc).
loadInterfaceForModule takes a specific module and loads it.
The modules in `ImpDeclSpec` have already been resolved to the actual
module to get the information from during renaming. Therefore we just
need to fetch the precise interface from disk (and not attempt to rename
it again).
Fixes #25951
- - - - -
2e0c07ab by Simon Peyton Jones at 2025-04-24T00:29:43-04:00
Test for #23298
- - - - -
0eef99b0 by Sven Tennie at 2025-04-24T07:34:36-04:00
RV64: Introduce J instruction (non-local jumps) and don't deallocate stack slots for J_TBL (#25738)
J_TBL result in local jumps, there should not deallocate stack slots
(see Note [extra spill slots].)
J is for non-local jumps, these may need to deallocate stack slots.
- - - - -
1bd3d13e by fendor at 2025-04-24T07:35:17-04:00
Add `UnitId` to `EvalBreakpoint`
The `EvalBreakpoint` is used to communicate that a breakpoint was
encountered during code evaluation.
This `EvalBreakpoint` needs to be converted to an `InternalBreakpointId`
which stores a `Module` to uniquely find the correct `Module` in the
Home Package Table.
The `EvalBreakpoint` used to store only a `ModuleName` which is then
converted to a `Module` based on the currently active home unit.
This is incorrect in the face of multiple home units, the break point
could be in an entirely other home unit!
To fix this, we additionally store the `UnitId` of the `Module` in
`EvalBreakpoint` to later reconstruct the correct `Module`
All of the changes are the consequence of extending `EvalBreakpoint`
with the additional `ShortByteString` of the `UnitId`.
For performance reasons, we store the `ShortByteString` backing the
`UnitId` directly, avoiding marshalling overhead.
- - - - -
fe6ed8d9 by Sylvain Henry at 2025-04-24T18:04:12-04:00
Doc: add doc for JS interruptible calling convention (#24444)
- - - - -
6111c5e4 by Ben Gamari at 2025-04-24T18:04:53-04:00
compiler: Ensure that Panic.Plain.assertPanic' provides callstack
In 36cddd2ce1a3bc62ea8a1307d8bc6006d54109cf @alt-romes removed CallStack
output from `GHC.Utils.Panic.Plain.assertPanic'`. While this output is
redundant due to the exception backtrace proposal, we may be
bootstrapping with a compiler which does not yet include this machinery.
Reintroduce the output for now.
Fixes #25898.
- - - - -
217caad1 by Matthew Pickering at 2025-04-25T18:58:42+01:00
Implement Explicit Level Imports for Template Haskell
This commit introduces the `ExplicitLevelImports` and
`ImplicitStagePersistence` language extensions as proposed in GHC
Proposal #682.
Key Features
------------
- `ExplicitLevelImports` adds two new import modifiers - `splice` and
`quote` - allowing precise control over the level at which imported
identifiers are available
- `ImplicitStagePersistence` (enabled by default) preserves existing
path-based cross-stage persistence behavior
- `NoImplicitStagePersistence` disables implicit cross-stage
persistence, requiring explicit level imports
Benefits
--------
- Improved compilation performance by reducing unnecessary code generation
- Enhanced IDE experience with faster feedback in `-fno-code` mode
- Better dependency tracking by distinguishing compile-time and runtime dependencies
- Foundation for future cross-compilation improvements
This implementation enables the separation of modules needed at
compile-time from those needed at runtime, allowing for more efficient
compilation pipelines and clearer code organization in projects using
Template Haskell.
Implementation Notes
--------------------
The level which a name is availble at is stored in the 'GRE', in the normal
GlobalRdrEnv. The function `greLevels` returns the levels which a specific GRE
is imported at. The level information for a 'Name' is computed by `getCurrentAndBindLevel`.
The level validity is checked by `checkCrossLevelLifting`.
Instances are checked by `checkWellLevelledDFun`, which computes the level an
instance by calling `checkWellLevelledInstanceWhat`, which sees what is
available at by looking at the module graph.
Modifications to downsweep
--------------------------
Code generation is now only enabled for modules which are needed at
compile time.
See the Note [-fno-code mode] for more information.
Uniform error messages for level errors
---------------------------------------
All error messages to do with levels are now reported uniformly using
the `TcRnBadlyStaged` constructor.
Error messages are uniformly reported in terms of levels.
0 - top-level
1 - quote level
-1 - splice level
The only level hard-coded into the compiler is the top-level in
GHC.Types.ThLevelIndex.topLevelIndex.
Uniformly refer to levels and stages
------------------------------------
There was much confusion about levels vs stages in the compiler.
A level is a semantic concept, used by the typechecker to ensure a
program can be evaluated in a well-staged manner.
A stage is an operational construct, program evaluation proceeds in
stages.
Deprecate -Wbadly-staged-types
------------------------------
`-Wbadly-staged-types` is deprecated in favour of `-Wbadly-levelled-types`.
Lift derivation changed
-----------------------
Derived lift instances will now not generate code with expression
quotations.
Before:
```
data A = A Int deriving Lift
=>
lift (A x) = [| A $(lift x) |]
```
After:
```
lift (A x) = conE 'A `appE` (lift x)
```
This is because if you attempt to derive `Lift` in a module where
`NoImplicitStagePersistence` is enabled, you would get an infinite loop
where a constructor was attempted to be persisted using the instance you
are currently defining.
GHC API Changes
---------------
The ModuleGraph now contains additional information about the type of
the edges (normal, quote or splice) between modules. This is abstracted
using the `ModuleGraphEdge` data type.
Fixes #25828
-------------------------
Metric Increase:
MultiLayerModulesTH_Make
-------------------------
- - - - -
7641a74a by Simon Peyton Jones at 2025-04-26T22:05:19-04:00
Get a decent MatchContext for pattern synonym bindings
In particular when we have a pattern binding
K p1 .. pn = rhs
where K is a pattern synonym. (It might be nested.)
This small MR fixes #25995. It's a tiny fix, to an error message,
removing an always-dubious `unkSkol`.
The bug report was in the context of horde-ad, a big program,
and I didn't manage to make a small repro case quickly. I decided
not to bother further.
- - - - -
ce616f49 by Simon Peyton Jones at 2025-04-27T21:10:25+01:00
Fix infelicities in the Specialiser
On the way to #23109 (unary classes) I discovered some infelicities
(or maybe tiny bugs, I forget) in the type-class specialiser.
I also tripped over #25965, an outright bug in the rule matcher
Specifically:
* Refactor: I enhanced `wantCallsFor`, whih previously always said
`True`, to discard calls of class-ops, data constructors etc. This is
a bit more efficient; and it means we don't need to worry about
filtering them out later.
* Fix: I tidied up some tricky logic that eliminated redundant
specialisations. It wasn't working correctly. See the expanded
Note [Specialisations already covered], and
(MP3) in Note [Specialising polymorphic dictionaries].
See also the new top-level `alreadyCovered`
function, which now goes via `GHC.Core.Rules.ruleLhsIsMoreSpecific`
I also added a useful Note [The (CI-KEY) invariant]
* Fix #25965: fixed a tricky bug in the `go_fam_fam` in
`GHC.Core.Unify.uVarOrFam`, which allows matching to succeed
without binding all type varibles.
I enhanced Note [Apartness and type families] some more
* #25703. This ticket "just works" with -fpolymorphic-specialisation;
but I was surprised that it worked! In this MR I added documentation
to Note [Interesting dictionary arguments] to explain; and tests to
ensure it stays fixed.
- - - - -
22d11fa8 by Simon Peyton Jones at 2025-04-28T18:05:19-04:00
Track rewriter sets more accurately in constraint solving
The key change, which fixed #25440, is to call `recordRewriter` in
GHC.Tc.Solver.Rewrite.rewrite_exact_fam_app. This missing call meant
that we were secretly rewriting a Wanted with a Wanted, but not really
noticing; and that led to a very bad error message, as you can see
in the ticket.
But of course that led me into rabbit hole of other refactoring around
the RewriteSet code:
* Improve Notes [Wanteds rewrite Wanteds]
* Zonk the RewriterSet in `zonkCtEvidence` rather than only in GHC.Tc.Errors.
This is tidier anyway (e.g. de-clutters debug output), and helps with the
next point.
* In GHC.Tc.Solver.Equality.inertsCanDischarge, don't replace a constraint
with no rewriters with an equal constraint that has many. See
See (CE4) in Note [Combining equalities]
* Move zonkRewriterSet and friends from GHC.Tc.Zonk.Type into
GHC.Tc.Zonk.TcType, where they properly belong.
A handful of tests get better error messages.
For some reason T24984 gets 12% less compiler allocation -- good
Metric Decrease:
T24984
- - - - -
6467d61e by Brandon Chinn at 2025-04-29T18:36:03-04:00
Fix lexing "\^\" (#25937)
This broke in the refactor in !13128, where the old code parsed escape
codes and collapsed string gaps at the same time, but the new code
collapsed gaps first, then resolved escape codes. The new code used a
naive heuristic to skip escaped backslashes, but didn't account for
"\^\".
- - - - -
99868a86 by Jens Petersen at 2025-04-29T18:36:44-04:00
hadrian: default selftest to disabled
- - - - -
aba2a4a5 by Zubin Duggal at 2025-04-30T06:35:59-04:00
get-win32-tarballs.py: List tarball files to be downloaded if we cannot find them
Fixes #25929
- - - - -
d99a617b by Ben Gamari at 2025-04-30T06:36:40-04:00
Move Data ModuleName instance to Language.Haskell.Syntax.Module.Name
Fixes #25968.
- - - - -
9995c2b7 by Serge S. Gulin at 2025-05-04T17:13:36+03:00
Support for ARM64 Windows (LLVM-enabled) (fixes #24603)
1. Add Windows AArch64 cross-compilation support via CI jobs
Introduce new CI configurations for cross-compiling to Windows ARM64 using Debian12Wine, FEX, and MSYS2.
Configure toolchain variables for LLVM MinGW and Wine emulation in CI pipelines.
2. Adjust compiler and RTS for AArch64 Windows compatibility
Reserve register `x18` on Windows and Darwin platforms in AArch64 codegen.
Handle Windows-specific relocations and data sections in AArch64 assembler.
Update PEi386 linker to recognize ARM64 binaries and support exception handling.
Adjust LLVM target definitions and data layouts for new architectures.
Update `ghc-toolchain` and build scripts to handle `TablesNextToCode` on Windows ARM64.
3. Enhance CI scripts and stability
Modify `ci.sh` to handle mingw cross-targets, fixing GHC executable paths and test execution.
Use `diff -w` in tests to ignore whitespace differences, improving cross-platform consistency.
4. Refactor and clean up code
Remove redundant imports in hello.hs test.
Improve error messages and checks for unsupported configurations in the driver.
Add `EXDEV` error code to `errno.js`.
Add async/sync flags to IO logs at `base.js`.
Improve POSIX compatibility for file close at `base.js`: decrease indeterminism for mixed cases of async and sync code.
5. Update dependencies: `Cabal`, `Win32`, `directory`, `process`, `haskeline`, and `unix`.
submodule
Co-authored-by: Cheng Shao <terrorjack(a)type.dance>
Co-authored-by: Dmitrii Egorov <egorov.d.i(a)icloud.com>
Co-authored-by: Andrei Borzenkov <root(a)sandwitch.dev>
- - - - -
50fa8165 by Javran Cheng at 2025-05-05T05:55:39-04:00
Suppress unused do-binding if discarded variable is Any or ZonkAny.
Consider example (#25895):
> do { forever (return ()); blah }
where `forever :: forall a b. IO a -> IO b`.
Nothing constrains `b`, so it will be instantiates with `Any` or
`ZonkAny`.
But we certainly don't want to complain about a discarded do-binding.
Fixes #25895
- - - - -
e46c6b18 by Rodrigo Mesquita at 2025-05-06T09:01:57-04:00
Refactor mkTopLevImportedEnv out of mkTopLevEnv
This makes the code clearer and allows the top-level import context to
be fetched directly from the HomeModInfo through the API (e.g. useful
for the debugger).
- - - - -
0ce0d263 by Rodrigo Mesquita at 2025-05-06T09:01:57-04:00
Export sizeOccEnv from GHC.Types.Name.Occurrence
Counts the number of OccNames in an OccEnv
- - - - -
165f98d8 by Simon Peyton Jones at 2025-05-06T09:02:39-04:00
Fix a bad untouchability bug im simplifyInfer
This patch addresses #26004. The root cause was that simplifyInfer
was willing to unify variables "far out". The fix, in
runTcSWithEvBinds', is to initialise the inert set given-eq level with
the current level. See
(TGE6) in Note [Tracking Given equalities]
in GHC.Tc.Solver.InertSet
Two loosely related refactors:
* Refactored approximateWCX to return just the free type
variables of the un-quantified constraints. That avoids duplication
of work (these free vars are needed in simplifyInfer) and makes it
clearer that the constraints themselves are irrelevant.
* A little local refactor of TcSMode, which reduces the number of
parameters to runTcSWithEvBinds
- - - - -
6e67fa08 by Ben Gamari at 2025-05-08T06:21:21-04:00
llvmGen: Fix built-in variable predicate
Previously the predicate to identify LLVM builtin global variables was
checking for `$llvm` rather than `@llvm` as it should.
- - - - -
a9d0a22c by Ben Gamari at 2025-05-08T06:21:22-04:00
llvmGen: Fix linkage of built-in arrays
LLVM now insists that built-in arrays use Appending linkage, not
Internal.
Fixes #25769.
- - - - -
9c6d2b1b by sheaf at 2025-05-08T06:22:11-04:00
Use mkTrAppChecked in ds_ev_typeable
This change avoids violating the invariant of mkTrApp according to which
the argument should not be a fully saturated function type.
This ensures we don't return false negatives for type equality
involving function types.
Fixes #25998
- - - - -
75cadf81 by Ryan Hendrickson at 2025-05-08T06:22:55-04:00
haddock: Preserve indentation in multiline examples
Intended for use with :{ :}, but doesn't look for those characters. Any
consecutive lines with birdtracks will only have initial whitespace
stripped up to the column of the first line.
- - - - -
fee9b351 by Cheng Shao at 2025-05-08T06:23:36-04:00
ci: re-enable chrome for wasm ghci browser tests
Currently only firefox is enabled for wasm ghci browser tests, for
some reason testing with chrome works on my machine but gets stuck on
gitlab instance runners. This patch re-enables testing with chrome by
passing `--no-sandbox`, since chrome sandboxing doesn't work in
containers without `--cap-add=SYS_ADMIN`.
- - - - -
282df905 by Vladislav Zavialov at 2025-05-09T03:18:25-04:00
Take subordinate 'type' specifiers into account
This patch fixes multiple bugs (#22581, #25983, #25984, #25991)
in name resolution of subordinate import lists.
Bug #22581
----------
In subordinate import lists, the use of the `type` namespace specifier
used to be ignored. For example, this import statement was incorrectly
accepted:
import Prelude (Bool(type True))
Now it results in an error message:
<interactive>:2:17: error: [GHC-51433]
In the import of ‘Prelude’:
a data type called ‘Bool’ is exported,
but its subordinate item ‘True’ is not in the type namespace.
Bug #25983
----------
In subordinate import lists within a `hiding` clause, non-existent
items led to a poor warning message with -Wdodgy-imports. Consider:
import Prelude hiding (Bool(X))
The warning message for this import statement used to misreport the
cause of the problem:
<interactive>:3:24: warning: [GHC-56449] [-Wdodgy-imports]
In the import of ‘Prelude’:
an item called ‘Bool’ is exported, but it is a type.
Now the warning message is correct:
<interactive>:2:24: warning: [GHC-10237] [-Wdodgy-imports]
In the import of ‘Prelude’:
a data type called ‘Bool’ is exported, but it does not export
any constructors or record fields called ‘X’.
Bug #25984
----------
In subordinate import lists within a `hiding` clause, non-existent
items resulted in the entire import declaration being discarded.
For example, this program was incorrectly accepted:
import Prelude hiding (Bool(True,X))
t = True
Now it results in an error message:
<interactive>:2:5: error: [GHC-88464]
Data constructor not in scope: True
Bug #25991
----------
In subordinate import lists, it was not possible to refer to a class
method if there was an associated type of the same name:
module M_helper where
class C a b where
type a # b
(#) :: a -> b -> ()
module M where
import M_helper (C((#)))
This import declaration failed with:
M.hs:2:28: error: [GHC-10237]
In the import of ‘M_helper’:
an item called ‘C’ is exported, but it does not export any children
(constructors, class methods or field names) called ‘#’.
Now it is accepted.
Summary
-------
The changes required to fix these bugs are almost entirely confined to
GHC.Rename.Names. Other than that, there is a new error constructor
BadImportNonTypeSubordinates with error code [GHC-51433].
Test cases:
T22581a T22581b T22581c T22581d
T25983a T25983b T25983c T25983d T25983e T25983f T25983g
T25984a T25984b
T25991a T25991b1 T25991b2
- - - - -
51b0ce8f by Simon Peyton Jones at 2025-05-09T03:19:07-04:00
Slighty improve `dropMisleading`
Fix #26105, by upgrading the (horrible, hacky) `dropMisleading`
function.
This fix makes things a bit better but does not cure the underlying
problem.
- - - - -
7b2d1e6d by Simon Peyton Jones at 2025-05-11T03:24:47-04:00
Refine `noGivenNewtypeReprEqs` to account for quantified constraints
This little MR fixes #26020. We are on the edge of completeness
for newtype equalities (that doesn't change) but this MR makes GHC
a bit more consistent -- and fixes the bug reported.
- - - - -
eaa8093b by Cheng Shao at 2025-05-11T03:25:28-04:00
wasm: mark freeJSVal as INLINE
This patch marks `freeJSVal` as `INLINE` for the wasm backend. I
noticed that the `freeJSVal` invocations are not inlined when
inspecting STG/Cmm dumps of downstream libraries that use release
build of the wasm backend. The performance benefit of inlining here is
very modest, but so is the cost anyway; if you are using `freeJSVal`
at all then you care about every potential chance to improve
performance :)
- - - - -
eac196df by Cheng Shao at 2025-05-11T03:25:28-04:00
wasm: add zero length fast path for fromJSString
This patch adds a zero length fast path for `fromJSString`; when
marshaling a zero-length `JSString` we don't need to allocate an empty
`ByteArray#` at all.
- - - - -
652cba7e by Peng Fan at 2025-05-14T04:24:35-04:00
Add LoongArch NCG support
Not supported before.
- - - - -
c01f4374 by Lin Runze at 2025-05-14T04:24:35-04:00
ci: Add LoongArch64 cross-compile CI for testing
- - - - -
ce6cf240 by Ben Gamari at 2025-05-14T04:25:18-04:00
rts/linker: Don't fail due to RTLD_NOW
In !12264 we started using the NativeObj machinery introduced some time
ago for loading of shared objects. One of the side-effects of this
change is shared objects are now loaded eagerly (i.e. with `RTLD_NOW`).
This is needed by NativeObj to ensure full visibility of the mappings of
the loaded object, which is in turn needed for safe shared object
unloading.
Unfortunately, this change subtly regressed, causing compilation
failures in some programs. Specifically, shared objects which refer to
undefined symbols (e.g. which may be usually provided by either the
executable image or libraries loaded via `dlopen`) will fail to load
with eager binding. This is problematic as GHC loads all package
dependencies while, e.g., evaluating TemplateHaskell splices. This
results in compilation failures in programs depending upon (but not
using at compile-time) packages with undefined symbol references.
To mitigate this NativeObj now first attempts to load an object via
eager binding, reverting to lazy binding (and disabling unloading) on
failure.
See Note [Don't fail due to RTLD_NOW].
Fixes #25943.
- - - - -
88ee8bb5 by Sylvain Henry at 2025-05-14T04:26:15-04:00
Deprecate GHC.JS.Prim.Internal.Build (#23432)
Deprecated as per CLC proposal 329 (https://github.com/haskell/core-libraries-committee/issues/329)
- - - - -
b4ed465b by Cheng Shao at 2025-05-14T04:26:57-04:00
libffi: update to 3.4.8
Bumps libffi submodule.
- - - - -
a3e71296 by Matthew Pickering at 2025-05-14T04:27:38-04:00
Remove leftover trace
- - - - -
2d0ecdc6 by Cheng Shao at 2025-05-14T04:28:19-04:00
Revert "ci: re-enable chrome for wasm ghci browser tests"
This reverts commit fee9b351fa5a35d5778d1252789eacaaf5663ae8.
Unfortunately the chrome test jobs may still timeout on certain
runners (e.g. OpenCape) for unknown reasons.
- - - - -
3b3a5dec by Ben Gamari at 2025-05-15T16:10:01-04:00
Don't emit unprintable characters when printing Uniques
When faced with an unprintable tag we now instead print the codepoint
number.
Fixes #25989.
(cherry picked from commit e832b1fadee66e8d6dd7b019368974756f8f8c46)
- - - - -
e1ef8974 by Mike Pilgrem at 2025-05-16T16:09:14-04:00
Translate iff in Haddock documentation into everyday English
- - - - -
fd64667d by Vladislav Zavialov at 2025-05-20T03:25:08-04:00
Allow the 'data' keyword in import/export lists (#25899)
This patch introduces the 'data' namespace specifier in import and
export lists. The intended use is to import data constructors without
their parent type constructors, e.g.
import Data.Proxy as D (data Proxy)
type DP = D.Proxy -- promoted data constructor
Additionally, it is possible to use 'data' to explicitly qualify any
data constructors or terms, incl. operators and field selectors
import Prelude (Semigroup(data (<>)))
import Data.Function (data (&))
import Data.Monoid (data Dual, data getDual)
x = Dual "Hello" <> Dual "World" & getDual
The implementation mostly builds on top of the existing logic for the
'type' and 'pattern' namespace specifiers, plus there are a few tweaks
to how we generate suggestions in error messages.
- - - - -
acc86753 by Ben Gamari at 2025-05-20T03:25:51-04:00
compiler: Use field selectors when creating BCOs
This makes it easier to grep for these fields.
- - - - -
60a55fd7 by Ben Gamari at 2025-05-20T03:25:51-04:00
compiler: Clarify BCO size
Previously the semantics and size of StgBCO was a bit unclear.
Specifically, the `size` field was documented to contain the size of the
bitmap whereas it was actually the size of the closure *and* bitmap.
Additionally, it was not as clear as it could be that the bitmap was a
full StgLargeBitmap with its own `size` field.
- - - - -
ac9fb269 by Simon Peyton Jones at 2025-05-20T09:19:04-04:00
Track rewriter sets more accurately in constraint solving
This MR addresses #26003, by refactoring the arcane
intricacies of Note [Equalities with incompatible kinds].
NB: now retitled to
Note [Equalities with heterogeneous kinds].
and the main Note for this MR.
In particular:
* Abandon invariant (COERCION-HOLE) in Note [Unification preconditions] in
GHC.Tc.Utils.Unify.
* Abandon invariant (TyEq:CH)) in Note [Canonical equalities] in
GHC.Tc.Types.Constraint.
* Instead: add invariant (REWRITERS) to Note [Unification preconditions]:
unify only if the constraint has an empty rewriter set.
Implementation:
* In canEqCanLHSFinish_try_unification, skip trying unification if there is a
non-empty rewriter set.
* To do this, make sure the rewriter set is zonked; do so in selectNextWorkItem,
which also deals with prioritisation.
* When a coercion hole is filled, kick out inert equalities that have that hole
as a rewriter. It might now be unlocked and available to unify.
* Remove the ad-hoc `ch_hetero_kind` field of `CoercionHole`.
* In `selectNextWorkItem`, priorities equalities withan empty rewriter set.
* Defaulting: see (DE6) in Note [Defaulting equalities]
and Note [Limited defaulting in the ambiguity check]
* Concreteness checks: there is some extra faff to try to get decent
error messages when the FRR (representation-polymorphism) checks
fail. In partiular, add a "When unifying..." explanation when the
representation-polymorphism check arose from another constraint.
- - - - -
86406f48 by Cheng Shao at 2025-05-20T09:19:47-04:00
rts: fix rts_clearMemory logic when sanity checks are enabled
This commit fixes an RTS assertion failure when invoking
rts_clearMemory with +RTS -DS. -DS implies -DZ which asserts that free
blocks contain 0xaa as the designated garbage value. Also adds the
sanity way to rts_clearMemory test to prevent future regression.
Closes #26011.
ChatGPT Codex automatically diagnosed the issue and proposed the
initial patch in a single shot, given a GHC checkout and the following
prompt:
---
Someone is reporting the following error when attempting to use `rts_clearMemory` with the RTS option `-DS`:
```
test.wasm: internal error: ASSERTION FAILED: file rts/sm/Storage.c, line 1216
(GHC version 9.12.2.20250327 for wasm32_unknown_wasi)
Please report this as a GHC bug: https://www.haskell.org/ghc/reportabug
```
What's the culprit? How do I look into this issue?
---
I manually reviewed & revised the patch, tested and submitted it.
- - - - -
7147370b by Cheng Shao at 2025-05-20T17:22:19-04:00
compiler: do not allocate strings in bytecode assembler
This patch refactors the compiler to avoid allocating iserv buffers
for BCONPtrStr at assemble-time. Now BCONPtrStr ByteStrings are
recorded as a part of CompiledByteCode, and actual allocation only
happens at link-time. This refactoring is necessary for adding
bytecode serialization functionality, as explained by the revised
comments in this commit.
- - - - -
a67db612 by Cheng Shao at 2025-05-20T17:22:19-04:00
compiler: make bc_strs serializable
This commit makes the bc_strs field in CompiledByteCode serializable;
similar to previous commit, we preserve the ByteString directly and
defer the actual allocation to link-time, as mentioned in updated
comment.
- - - - -
5faf34ef by Cheng Shao at 2025-05-20T17:22:19-04:00
compiler: make bc_itbls serializable
This commit makes bc_itbls in CompiledByteCode serializable. A
dedicated ConInfoTable datatype has been added in ghci which is the
recipe for dynamically making a datacon's info table, containing the
payload of the MkConInfoTable iserv message.
- - - - -
2abaf8c1 by Cheng Shao at 2025-05-20T17:22:19-04:00
compiler: remove FFIInfo bookkeeping in BCO
This commit removes the bc_ffis field from CompiledByteCode
completely, as well as all the related bookkeeping logic in
GHC.StgToByteCode. bc_ffis is actually *unused* in the rest of GHC
codebase! It is merely a list of FFIInfo, which is just a remote
pointer of the libffi ffi_cif struct; once we allocate the ffi_cif
struct and put its pointer in a CCALL instruction, we'll never free it
anyway. So there is no point of bookkeeping.
- - - - -
adb9e4d2 by Cheng Shao at 2025-05-20T17:22:19-04:00
compiler: make FFIInfo serializable in BCO
This commit makes all the FFIInfo needed in CCALL instructions
serializable. Previously, when doing STG to BCO lowering, we would
allocate a libffi ffi_cif struct and keep its remote pointer as
FFIInfo; but actually we can just keep the type signature as FFIInfo
and defer the actual allocation to link-time.
- - - - -
200f401b by Cheng Shao at 2025-05-20T17:22:19-04:00
ghci: remove redundant NewBreakModule message
This commit removes the redundant NewBreakModule message from ghci: it
just allocates two strings! This functionality can be implemented with
existing MallocStrings in one iserv call.
- - - - -
ddaadca6 by Cheng Shao at 2025-05-20T17:22:19-04:00
compiler: make breakpoint module name and unit id serializable
This commit makes breakpoint module name and unit id serializable, in
BRK_FUN instructions as well as ModBreaks. We can simply keep the
module name and unit ids, and defer the buffer allocation to link
time.
- - - - -
a0fde202 by Cheng Shao at 2025-05-20T17:22:19-04:00
compiler: remove unused newModule
This commit removes the now unused newModule function from GHC.
- - - - -
68c8f140 by Cheng Shao at 2025-05-20T17:22:19-04:00
compiler: add BCONPtrFS for interned top level string literals in BCO
This commit adds BCONPtrFS as a BCO non-pointer literal kind, which
has the same semantics of BCONPtrStr, except it contains a FastString
instead of a ByteString. By using BCONPtrFS to represent top level
string literals that are already FastString in the compilation
pipeline, we enjoy the FastString interning logic and avoid allocating
a bunch of redundant ByteStrings for the same FastStrings, especially
when we lower the BRK_FUN instruction.
- - - - -
f2b532bc by Peng Fan at 2025-05-20T17:23:15-04:00
hadrian: enable GHCi for loongarch64
- - - - -
8ded2330 by kwxm at 2025-05-20T17:24:07-04:00
Fix bugs in `integerRecipMod` and `integerPowMod`
This fixes #26017.
* `integerRecipMod x 1` now returns `(# 1 | #)` for all x; previously it
incorrectly returned `(# | () #)`, indicating failure.
* `integerPowMod 0 e m` now returns `(# | () #)` for e<0 and m>1, indicating
failure; previously it incorrectly returned `(# 0 | #)`.
- - - - -
c9abb87c by Andreas Klebinger at 2025-05-20T17:24:50-04:00
Specialise: Don't float out constraint components.
It was fairly complex to do so and it doesn't seem to improve anything.
Nofib allocations were unaffected as well.
See also Historical Note [Floating dictionaries out of cases]
- - - - -
202b201c by Andreas Klebinger at 2025-05-21T10:16:14-04:00
Interpreter: Add limited support for direct primop evaluation.
This commit adds support for a number of primops directly
to the interpreter. This avoids the indirection of going
through the primop wrapper for those primops speeding interpretation
of optimized code up massively.
Code involving IntSet runs about 25% faster with optimized core and these
changes. For core without breakpoints it's even more pronouced and I
saw reductions in runtime by up to 50%.
Running GHC itself in the interpreter was sped up by ~15% through this
change.
Additionally this comment does a few other related changes:
testsuite:
* Run foundation test in ghci and ghci-opt ways to test these
primops.
* Vastly expand the foundation test to cover all basic primops
by comparing result with the result of calling the wrapper.
Interpreter:
* When pushing arguments for interpreted primops extend each argument to
at least word with when pushing. This avoids some issues with big
endian. We can revisit this if it causes performance issues.
* Restructure the stack chunk check logic. There are now macros for
read accesses which might cross stack chunk boundries and macros which
omit the checks which are used when we statically know we access an
address in the current stack chunk.
- - - - -
67a177b4 by sheaf at 2025-05-21T10:17:04-04:00
QuickLook: do a shape test before unifying
This commit ensures we do a shape test before unifying. This ensures
we don't try to unify a TyVarTv with a non-tyvar, e.g.
alpha[tyv] := Int
On the way, we refactor simpleUnifyCheck:
1. Move the checkTopShape check into simpleUnifyCheck
2. Refactors simpleUnifyCheck to return a value of the new type
SimpleUnifyResult type. Now, simpleUnifyCheck returns "can unify",
"cannot unify" or "dunno" (with "cannot unify" being the new result
it can return). Now:
- touchabilityTest is included; it it fails we return "cannot unify"
- checkTopShape now returns "cannot unify" instead of "dunno" upon failure
3. Move the call to simpleUnifyCheck out of checkTouchableTyVarEq.
After that, checkTouchableTyVarEq becames a simple call to
checkTyEqRhs, so we inline it.
This allows the logic in canEqCanLHSFinish_try_unification to be simplified.
In particular, we now avoid calling 'checkTopShape' twice.
Two further changes suggested by Simon were also implemented:
- In canEqCanLHSFinish, if checkTyEqRhs returns PuFail with
'do_not_prevent_rewriting', we now **continue with this constraint**.
This allows us to use the constraint for rewriting.
- checkTyEqRhs now has a top-level check to avoid flattening a tyfam app
in a top-level equality of the form alpha ~ F tys, as this is
going around in circles. This simplifies the implementation without
any change in behaviour.
Fixes #25950
Fixes #26030
- - - - -
4020972c by sheaf at 2025-05-21T10:17:04-04:00
FixedRuntimeRepError: omit unhelpful explanation
This commit tweaks the FixedRuntimeRepError case of pprTcSolverReportMsg,
to avoid including an explanation which refers to a type variable that
appears nowhere else.
For example, the old error message could look like the following:
The pattern binding does not have a fixed runtime representation.
Its type is:
T :: TYPE R
Cannot unify ‘R’ with the type variable ‘c0’
because the former is not a concrete ‘RuntimeRep’.
With this commit, we now omit the last two lines, because the concrete
type variable (here 'c0') does not appear in the type displayed to the
user (here 'T :: TYPE R').
- - - - -
6d058a69 by Andrea Bedini at 2025-05-21T16:00:51-04:00
Don't fail when ghcversion.h can't be found (#26018)
If ghcversion.h can't be found, don't try to include it. This happens
when there is no rts package in the package db and when -ghcversion-file
argument isn't passed.
Co-authored-by: Syvlain Henry <sylvain(a)haskus.fr>
- - - - -
b1212fbf by Vladislav Zavialov at 2025-05-21T16:01:33-04:00
Implement -Wpattern-namespace-specifier (#25900)
In accordance with GHC Proposal #581 "Namespace-specified imports",
section 2.3 "Deprecate use of pattern in import/export lists", the
`pattern` namespace specifier is now deprecated.
Test cases: T25900 T25900_noext
- - - - -
e650ec3e by Ben Gamari at 2025-05-23T03:42:46-04:00
base: Forward port changelog language from 9.12
- - - - -
94cd9ca4 by Ben Gamari at 2025-05-23T03:42:46-04:00
base: Fix RestructuredText-isms in changelog
- - - - -
7722232c by Ben Gamari at 2025-05-23T03:42:46-04:00
base: Note strictness changes made in 4.16.0.0
Addresses #25886.
- - - - -
3f4b823c by Ben Gamari at 2025-05-23T03:43:28-04:00
rts/linker: Factor out ProddableBlocks machinery
- - - - -
6e23fef2 by Ben Gamari at 2025-05-23T03:43:28-04:00
rts/linker: Improve efficiency of proddable blocks structure
Previously the linker's "proddable blocks" check relied on a simple
linked list of spans. This resulted in extremely poor complexity while
linking objects with lots of small sections (e.g. objects built with
split sections).
Rework the mechanism to instead use a simple interval set implemented
via binary search.
Fixes #26009.
- - - - -
ea74860c by Ben Gamari at 2025-05-23T03:43:28-04:00
testsuite: Add simple functional test for ProddableBlockSet
- - - - -
74c4db46 by Ben Gamari at 2025-05-23T03:43:28-04:00
rts/linker/PEi386: Drop check for LOAD_LIBRARY_SEARCH_*_DIRS
The `LOAD_LIBRARY_SEARCH_USER_DIRS` and
`LOAD_LIBRARY_SEARCH_DEFAULT_DIRS` were introduced in Windows Vista and
have been available every since. As we no longer support Windows XP we
can drop this check.
Addresses #26009.
- - - - -
972d81d6 by Ben Gamari at 2025-05-23T03:43:28-04:00
rts/linker/PEi386: Clean up code style
- - - - -
8a1073a5 by Ben Gamari at 2025-05-23T03:43:28-04:00
rts/Hash: Factor out hashBuffer
This is a useful helper which can be used for non-strings as well.
- - - - -
44f509f2 by Ben Gamari at 2025-05-23T03:43:28-04:00
rts/linker/PEi386: Fix incorrect use of break in nested for
Previously the happy path of PEi386 used `break` in a double-`for` loop
resulting in redundant calls to `LoadLibraryEx`.
Fixes #26052.
- - - - -
bfb12783 by Ben Gamari at 2025-05-23T03:43:28-04:00
rts: Correctly mark const arguments
- - - - -
08469ff8 by Ben Gamari at 2025-05-23T03:43:28-04:00
rts/linker/PEi386: Don't repeatedly load DLLs
Previously every DLL-imported symbol would result in a call to
`LoadLibraryEx`. This ended up constituting over 40% of the runtime of
`ghc --interactive -e 42` on Windows. Avoid this by maintaining a
hash-set of loaded DLL names, skipping the call if we have already
loaded the requested DLL.
Addresses #26009.
- - - - -
823d1ccf by Ben Gamari at 2025-05-23T03:43:28-04:00
rts/linker: Expand comment describing ProddableBlockSet
- - - - -
e9de9e0b by Sylvain Henry at 2025-05-23T15:12:34-04:00
Remove emptyModBreaks
Remove emptyModBreaks and track the absence of ModBreaks with `Maybe
ModBreaks`. It avoids testing for null pointers...
- - - - -
17db44c5 by Ben Gamari at 2025-05-23T15:13:16-04:00
base: Expose Backtraces constructor and fields
This was specified in the proposal (CLC #199) yet somehow didn't make it
into the implementation.
Fixes #26049.
- - - - -
b08c08ae by soulomoon at 2025-05-28T01:57:23+08:00
Refactor handling of imported COMPLETE pragmas
from the HPT
Previously, we imported COMPLETE pragmas from all modules in the Home
Package Table (HPT) during type checking. However, since !13675, there
may be non-below modules in the HPT from the dependency tree that we do
not want to import COMPLETE pragmas from. This refactor changes the way
we handle COMPLETE pragmas from the HPT to only import them from modules
that are "below" the current module in the HPT.
- Add hugCompleteSigsBelow to filter COMPLETE pragmas from "below"
modules in the HPT, mirroring hugRulesBelow.
- Move responsibility for calling hugCompleteSigsBelow to tcRnImports,
storing the result in the new tcg_complete_match_env field of TcGblEnv.
- Update getCompleteMatchesTcM to use tcg_complete_match_env.
This refactor only affects how COMPLETE pragmas are imported from the
HPT, imports from external packages are unchanged.
- - - - -
16014bf8 by Hécate Kleidukos at 2025-05-28T20:09:34-04:00
Expose all of Backtraces' internals for ghc-internal
Closes #26049
- - - - -
a0adc30d by Ryan Hendrickson at 2025-05-30T14:12:52-04:00
haddock: Fix links to type operators
- - - - -
7b64697c by Mario Blažević at 2025-05-30T14:13:41-04:00
Introduce parenBreakableList and use it in ppHsContext
- - - - -
5f213bff by fendor at 2025-06-02T09:16:24+02:00
Make GHCi commands compatible with multiple home units
=== Design
We enable all GHCi features that were previously guarded by the `inMulti`
option.
GHCi supported multiple home units up to a certain degree for quite a while now.
The supported feature set was limited, due to a design impasse:
One of the home units must be "active", e.g., there must be one `HomeUnit`
whose `UnitId` is "active" which is returned when calling
```haskell
do
hscActiveUnitId <$> getSession
```
This makes sense in a GHC session, since you are always compiling a particular
Module, but it makes less intuitive sense in an interactive session.
Given an expression to evaluate, we can't easily tell in which "context" the expression
should be parsed, typechecked and evaluated.
That's why initially, most of GHCi features, except for `:reload`ing were disabled
if the GHCi session had more than one `HomeUnitEnv`.
We lift this restriction, enabling all features of GHCi for the multiple home unit case.
To do this, we fundamentally change the `HomeUnitEnv` graph to be multiple home unit first.
Instead of differentiating the case were we have a single home unit and multiple,
we now always set up a multiple home unit session that scales seamlessly to an arbitrary
amount of home units.
We introduce two new `HomeUnitEnv`s that are always added to the `HomeUnitGraph`.
They are:
The "interactive-ghci", called the `interactiveGhciUnit`, contains the same
`DynFlags` that are used by the `InteractiveContext` for interactive evaluation
of expressions.
This `HomeUnitEnv` is only used on the prompt of GHCi, so we may refer to it as
"interactive-prompt" unit.
See Note [Relation between the `InteractiveContext` and `interactiveGhciUnitId`]
for discussing its role.
And the "interactive-session"", called `interactiveSessionUnit` or
`interactiveSessionUnitId`, which is used for loading Scripts into
GHCi that are not `Target`s of any home unit, via `:load` or `:add`.
Both of these "interactive" home units depend on all other `HomeUnitEnv`s that
are passed as arguments on the cli.
Additionally, the "interactive-ghci" unit depends on `interactive-session`.
We always evaluate expressions in the context of the
"interactive-ghci" session.
Since "interactive-ghci" depends on all home units, we can import any `Module`
from the other home units with ease.
As we have a clear `HomeUnitGraph` hierarchy, we can set `interactiveGhciUnitId`
as the active home unit for the full duration of the GHCi session.
In GHCi, we always set `interactiveGhciUnitId` to be the currently active home unit.
=== Implementation Details
Given this design idea, the implementation is relatively straight
forward.
The core insight is that a `ModuleName` is not sufficient to identify a
`Module` in the `HomeUnitGraph`. Thus, large parts of the PR is simply
about refactoring usages of `ModuleName` to prefer `Module`, which has a
`Unit` attached and is unique over the `HomeUnitGraph`.
Consequentially, most usages of `lookupHPT` are likely to be incorrect and have
been replaced by `lookupHugByModule` which is keyed by a `Module`.
In `GHCi/UI.hs`, we make sure there is only one location where we are
actually translating `ModuleName` to a `Module`:
* `lookupQualifiedModuleName`
If a `ModuleName` is ambiguous, we detect this and report it to the
user.
To avoid repeated lookups of `ModuleName`s, we store the `Module` in the
`InteractiveImport`, which additionally simplifies the interface
loading.
A subtle detail is that the `DynFlags` of the `InteractiveContext` are
now stored both in the `HomeUnitGraph` and in the `InteractiveContext`.
In UI.hs, there are multiple code paths where we are careful to update
the `DynFlags` in both locations.
Most importantly in `addToProgramDynFlags`.
---
There is one metric increase in this commit:
-------------------------
Metric Increase:
T4029
-------------------------
It is an increase from 14.4 MB to 16.1 MB (+11.8%) which sounds like a
pretty big regression at first.
However, we argue this increase is solely caused by using more data
structures for managing multiple home units in the GHCi session.
In particular, due to the design decision of using three home units, the
base memory usage increases... but by how much?
A big contributor is the `UnitState`, of which we have three now, which
on its own 260 KB per instance. That makes an additional memory usage of
520 KB, already explaining a third of the overall memory usage increase.
Then we store more elements in the `HomeUnitGraph`, we have more
`HomeUnitEnv` entries, etc...
While we didn't chase down each byte, we looked at the memory usage over time
for both `-hi` and `-hT` profiles and can say with confidence while the memory
usage increased slightly, we did not introduce any space leak, as
the graph looks almost identical as the memory usage graph of GHC HEAD.
---
Adds testcases for GHCi multiple home units session
* Test truly multiple home unit sessions, testing reload logic and code evaluation.
* Test that GHCi commands such as `:all-types`, `:browse`, etc., work
* Object code reloading for home modules
* GHCi debugger multiple home units session
- - - - -
de603d01 by fendor at 2025-06-02T09:16:24+02:00
Update "loading compiled code" GHCi documentation
To use object code in GHCi, the module needs to be compiled for use in
GHCi. To do that, users need to compile their modules with:
* `-dynamic`
* `-this-unit-id interactive-session`
Otherwise, the interface files will not match.
- - - - -
b255a8ca by Vladislav Zavialov at 2025-06-02T16:00:12-04:00
docs: Fix code example for NoListTuplePuns
Without the fix, the example produces an error:
Test.hs:11:3: error: [GHC-45219]
• Data constructor ‘Tuple’ returns type ‘Tuple2 a b’
instead of an instance of its parent type ‘Tuple a’
• In the definition of data constructor ‘Tuple’
In the data type declaration for ‘Tuple’
Fortunately, a one line change makes it compile.
- - - - -
6558467c by Ryan Hendrickson at 2025-06-06T05:46:58-04:00
haddock: Parse math even after ordinary characters
Fixes a bug where math sections were not recognized if preceded by a
character that isn't special (like space or a markup character).
- - - - -
265d0024 by ARATA Mizuki at 2025-06-06T05:47:48-04:00
AArch64 NCG: Fix sub-word arithmetic right shift
As noted in Note [Signed arithmetic on AArch64], we should zero-extend sub-word values.
Fixes #26061
- - - - -
05e9be18 by Simon Hengel at 2025-06-06T05:48:35-04:00
Allow Unicode in "message" and "hints" with -fdiagnostics-as-json
(fixes #26075)
- - - - -
bfa6b70f by ARATA Mizuki at 2025-06-06T05:49:24-04:00
x86 NCG: Fix code generation of bswap64 on i386
Co-authored-by: sheaf <sam.derbyshire(a)gmail.com>
Fix #25601
- - - - -
35826d8b by Matthew Pickering at 2025-06-08T22:00:41+01:00
Hadrian: Add option to generate .hie files for stage1 libraries
The +hie_files flavour transformer can be enabled to produce hie files
for stage1 libraries. The hie files are produced in the
"extra-compilation-artifacts" folder and copied into the resulting
bindist.
At the moment the hie files are not produced for the release flavour,
they add about 170M to the final bindist.
Towards #16901
- - - - -
e2467dbd by Ryan Hendrickson at 2025-06-09T13:07:05-04:00
Fix various failures to -fprint-unicode-syntax
- - - - -
1d99d3e4 by maralorn at 2025-06-12T03:47:39-04:00
Add necessary flag for js linking
- - - - -
974d5734 by maralorn at 2025-06-12T03:47:39-04:00
Don’t use additional linker flags to detect presence of -fno-pie in configure.ac
This mirrors the behavior of ghc-toolchain
- - - - -
1e9eb118 by Andrew Lelechenko at 2025-06-12T03:48:21-04:00
Add HasCallStack to Control.Monad.Fail.fail
CLC proposal https://github.com/haskell/core-libraries-committee/issues/327
2% compile-time allocations increase in T3064, likely because `fail`
is now marginally more expensive to compile.
Metric Increase:
T3064
- - - - -
6d12060f by meooow25 at 2025-06-12T14:26:07-04:00
Bump containers submodule to 0.8
Also
* Disable -Wunused-imports for containers
* Allow containers-0.8 for in-tree packages
* Bump some submodules so that they allow containers-0.8. These are not
at any particular versions.
* Remove unused deps containers and split from ucd2haskell
* Fix tests affected by the new containers and hpc-bin
- - - - -
537bd233 by Peng Fan at 2025-06-12T14:27:02-04:00
NCG/LA64: Optimize code generation and reduce build-directory size.
1. makeFarBranches: Prioritize fewer instruction sequences.
2. Prefer instructions with immediate numbers to reduce register moves,
e.g. andi,ori,xori,addi.
3. Ppr: Remove unnecessary judgments.
4. genJump: Avoid "ld+jr" as much as possible.
5. BCOND and BCOND1: Implement conditional jumps with two jump ranges,
with limited choice of the shortest.
6. Implement FSQRT, CLT, CTZ.
7. Remove unnecessary code.
- - - - -
19f20861 by Simon Peyton Jones at 2025-06-13T09:51:11-04:00
Improve redundant constraints for instance decls
Addresses #25992, which showed that the default methods
of an instance decl could make GHC fail to report redundant
constraints.
Figuring out how to do this led me to refactor the computation
of redundant constraints. See the entirely rewritten
Note [Tracking redundant constraints]
in GHC.Tc.Solver.Solve
- - - - -
1d02798e by Matthew Pickering at 2025-06-13T09:51:54-04:00
Refactor the treatment of nested Template Haskell splices
* The difference between a normal splice, a quasiquoter and implicit
splice caused by lifting is stored in the AST after renaming.
* Information that the renamer learns about splices is stored in the
relevant splice extension points (XUntypedSpliceExpr, XQuasiQuote).
* Normal splices and quasi quotes record the flavour of splice
(exp/pat/dec etc)
* Implicit lifting stores information about why the lift was attempted,
so if it fails, that can be reported to the user.
* After renaming, the decision taken to attempt to implicitly lift a
variable is stored in the `XXUntypedSplice` extension field in the
`HsImplicitLiftSplice` constructor.
* Since all the information is stored in the AST, in `HsUntypedSplice`,
the type of `PendingRnSplice` now just stores a `HsUntypedSplice`.
* Error messages since the original program can be easily
printed, this is noticeable in the case of implicit lifting.
* The user-written syntax is directly type-checked. Before, some
desugaring took place in the
* Fixes .hie files to work better with nested splices (nested splices
are not indexed)
* The location of the quoter in a quasiquote is now located, so error
messages will precisely point to it (and again, it is indexed by hie
files)
In the future, the typechecked AST should also retain information about
the splices and the specific desugaring being left to the desugarer.
Also, `runRnSplice` should call `tcUntypedSplice`, otherwise the
typechecking logic is duplicated (see the `QQError` and `QQTopError`
tests for a difference caused by this).
- - - - -
f93798ba by Cheng Shao at 2025-06-13T09:52:35-04:00
libffi: update to 3.5.1
Bumps libffi submodule.
- - - - -
c7aa0c10 by Andreas Klebinger at 2025-06-15T05:47:24-04:00
Revert "Specialise: Don't float out constraint components."
This reverts commit c9abb87ccc0c91cd94f42b3e36270158398326ef.
Turns out two benchmarks from #19747 regresses by a factor of 7-8x if
we do not float those out.
- - - - -
fd998679 by Krzysztof Gogolewski at 2025-06-15T05:48:06-04:00
Fix EPT enforcement when mixing unboxed tuples and non-tuples
The code was assuming that an alternative cannot be returning a normal
datacon and an unboxed tuple at the same time. However, as seen in #26107,
this can happen when using a GADT to refine the representation type.
The solution is just to conservatively return TagDunno.
- - - - -
48b38184 by Teo Camarasu at 2025-06-17T19:30:55+01:00
Expose ghc-internal unit id through the settings file
This in combination with the unit id of the compiler library allows
cabal to know of the two unit ids that should not be reinstalled (in
specific circumstances) as:
- when using plugins, we want to link against exactly the compiler unit
id
- when using TemplateHaskell we want to link against exactly the package
that contains the TemplateHaskell interfaces, which is `ghc-internal`
See: <https://github.com/haskell/cabal/issues/10087>
Resolves #25282
- - - - -
1017 changed files:
- .gitlab-ci.yml
- .gitlab/ci.sh
- .gitlab/generate-ci/gen_ci.hs
- .gitlab/hello.hs
- .gitlab/jobs.yaml
- compiler/CodeGen.Platform.h
- compiler/GHC.hs
- compiler/GHC/Builtin/Names.hs
- compiler/GHC/Builtin/Names/TH.hs
- compiler/GHC/Builtin/Types.hs
- compiler/GHC/Builtin/primops.txt.pp
- compiler/GHC/ByteCode/Asm.hs
- compiler/GHC/ByteCode/InfoTable.hs
- compiler/GHC/ByteCode/Instr.hs
- compiler/GHC/ByteCode/Linker.hs
- compiler/GHC/ByteCode/Types.hs
- compiler/GHC/Cmm/CLabel.hs
- compiler/GHC/CmmToAsm.hs
- compiler/GHC/CmmToAsm/AArch64/CodeGen.hs
- compiler/GHC/CmmToAsm/AArch64/Instr.hs
- compiler/GHC/CmmToAsm/AArch64/Ppr.hs
- compiler/GHC/CmmToAsm/Dwarf/Constants.hs
- + compiler/GHC/CmmToAsm/LA64.hs
- + compiler/GHC/CmmToAsm/LA64/CodeGen.hs
- + compiler/GHC/CmmToAsm/LA64/Cond.hs
- + compiler/GHC/CmmToAsm/LA64/Instr.hs
- + compiler/GHC/CmmToAsm/LA64/Ppr.hs
- + compiler/GHC/CmmToAsm/LA64/RegInfo.hs
- + compiler/GHC/CmmToAsm/LA64/Regs.hs
- compiler/GHC/CmmToAsm/PIC.hs
- compiler/GHC/CmmToAsm/RV64/CodeGen.hs
- compiler/GHC/CmmToAsm/RV64/Instr.hs
- compiler/GHC/CmmToAsm/RV64/Ppr.hs
- compiler/GHC/CmmToAsm/Reg/Graph/TrivColorable.hs
- compiler/GHC/CmmToAsm/Reg/Linear.hs
- compiler/GHC/CmmToAsm/Reg/Linear/AArch64.hs
- compiler/GHC/CmmToAsm/Reg/Linear/FreeRegs.hs
- + compiler/GHC/CmmToAsm/Reg/Linear/LA64.hs
- compiler/GHC/CmmToAsm/Reg/Target.hs
- compiler/GHC/CmmToAsm/X86/CodeGen.hs
- compiler/GHC/CmmToLlvm/Base.hs
- compiler/GHC/CmmToLlvm/Data.hs
- compiler/GHC/Core/Coercion.hs
- compiler/GHC/Core/InstEnv.hs
- compiler/GHC/Core/Opt/ConstantFold.hs
- compiler/GHC/Core/Opt/Specialise.hs
- compiler/GHC/Core/Predicate.hs
- compiler/GHC/Core/Rules.hs
- compiler/GHC/Core/TyCo/Rep.hs
- compiler/GHC/Core/TyCo/Tidy.hs
- compiler/GHC/Core/Unify.hs
- compiler/GHC/Data/Graph/Directed/Reachability.hs
- compiler/GHC/Driver/Backend.hs
- compiler/GHC/Driver/Backpack.hs
- compiler/GHC/Driver/Downsweep.hs
- compiler/GHC/Driver/DynFlags.hs
- compiler/GHC/Driver/Env.hs
- compiler/GHC/Driver/Env/Types.hs
- compiler/GHC/Driver/Errors/Ppr.hs
- compiler/GHC/Driver/Errors/Types.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/Main.hs
- compiler/GHC/Driver/Make.hs
- compiler/GHC/Driver/MakeAction.hs
- compiler/GHC/Driver/MakeFile.hs
- + compiler/GHC/Driver/Messager.hs
- compiler/GHC/Driver/Pipeline.hs
- compiler/GHC/Driver/Pipeline.hs-boot
- compiler/GHC/Driver/Pipeline/Execute.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/Hs/Binds.hs
- compiler/GHC/Hs/Decls.hs
- compiler/GHC/Hs/Expr.hs
- compiler/GHC/Hs/Expr.hs-boot
- compiler/GHC/Hs/ImpExp.hs
- compiler/GHC/Hs/Instances.hs
- compiler/GHC/HsToCore/Binds.hs
- compiler/GHC/HsToCore/Breakpoints.hs
- compiler/GHC/HsToCore/Expr.hs
- compiler/GHC/HsToCore/Monad.hs
- compiler/GHC/HsToCore/Pmc/Solver/Types.hs
- compiler/GHC/HsToCore/Quote.hs
- compiler/GHC/Iface/Ext/Ast.hs
- compiler/GHC/Iface/Load.hs
- compiler/GHC/Iface/Recomp.hs
- compiler/GHC/Iface/Syntax.hs
- compiler/GHC/Iface/Tidy.hs
- compiler/GHC/Iface/Type.hs
- compiler/GHC/IfaceToCore.hs
- compiler/GHC/Linker/Deps.hs
- compiler/GHC/Linker/Loader.hs
- compiler/GHC/Parser.y
- compiler/GHC/Parser/Annotation.hs
- compiler/GHC/Parser/Errors/Ppr.hs
- compiler/GHC/Parser/Errors/Types.hs
- compiler/GHC/Parser/Header.hs
- compiler/GHC/Parser/Lexer.x
- compiler/GHC/Parser/PostProcess.hs
- compiler/GHC/Parser/PostProcess/Haddock.hs
- compiler/GHC/Parser/String.hs
- compiler/GHC/Platform/LoongArch64.hs → compiler/GHC/Platform/LA64.hs
- compiler/GHC/Platform/Regs.hs
- compiler/GHC/Rename/Bind.hs
- compiler/GHC/Rename/Env.hs
- compiler/GHC/Rename/Expr.hs
- compiler/GHC/Rename/Module.hs
- compiler/GHC/Rename/Names.hs
- compiler/GHC/Rename/Splice.hs
- compiler/GHC/Rename/Unbound.hs
- compiler/GHC/Rename/Utils.hs
- compiler/GHC/Runtime/Context.hs
- compiler/GHC/Runtime/Debugger/Breakpoints.hs
- compiler/GHC/Runtime/Eval.hs
- compiler/GHC/Runtime/Heap/Inspect.hs
- compiler/GHC/Runtime/Interpreter.hs
- compiler/GHC/Runtime/Loader.hs
- compiler/GHC/Stg/EnforceEpt/Types.hs
- compiler/GHC/StgToByteCode.hs
- compiler/GHC/StgToJS/Linker/Linker.hs
- compiler/GHC/SysTools/Cpp.hs
- compiler/GHC/Tc/Deriv/Generate.hs
- compiler/GHC/Tc/Deriv/Utils.hs
- compiler/GHC/Tc/Errors.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Errors/Types.hs
- compiler/GHC/Tc/Gen/App.hs
- compiler/GHC/Tc/Gen/Default.hs
- compiler/GHC/Tc/Gen/Export.hs
- compiler/GHC/Tc/Gen/Expr.hs
- compiler/GHC/Tc/Gen/Head.hs
- compiler/GHC/Tc/Gen/HsType.hs
- compiler/GHC/Tc/Gen/Match.hs
- compiler/GHC/Tc/Gen/Pat.hs
- compiler/GHC/Tc/Gen/Splice.hs
- compiler/GHC/Tc/Gen/Splice.hs-boot
- compiler/GHC/Tc/Module.hs
- compiler/GHC/Tc/Plugin.hs
- compiler/GHC/Tc/Solver.hs
- compiler/GHC/Tc/Solver/Default.hs
- compiler/GHC/Tc/Solver/Dict.hs
- compiler/GHC/Tc/Solver/Equality.hs
- compiler/GHC/Tc/Solver/InertSet.hs
- compiler/GHC/Tc/Solver/Monad.hs
- compiler/GHC/Tc/Solver/Rewrite.hs
- compiler/GHC/Tc/Solver/Solve.hs
- compiler/GHC/Tc/TyCl.hs
- compiler/GHC/Tc/TyCl/Instance.hs
- compiler/GHC/Tc/Types.hs
- compiler/GHC/Tc/Types/Constraint.hs
- compiler/GHC/Tc/Types/ErrCtxt.hs
- compiler/GHC/Tc/Types/Evidence.hs
- compiler/GHC/Tc/Types/LclEnv.hs
- compiler/GHC/Tc/Types/Origin.hs
- compiler/GHC/Tc/Types/TH.hs
- compiler/GHC/Tc/Utils/Backpack.hs
- compiler/GHC/Tc/Utils/Concrete.hs
- compiler/GHC/Tc/Utils/Env.hs
- compiler/GHC/Tc/Utils/Instantiate.hs
- compiler/GHC/Tc/Utils/Monad.hs
- compiler/GHC/Tc/Utils/TcMType.hs
- compiler/GHC/Tc/Utils/TcType.hs
- compiler/GHC/Tc/Utils/Unify.hs
- compiler/GHC/Tc/Zonk/TcType.hs
- compiler/GHC/Tc/Zonk/Type.hs
- compiler/GHC/ThToHs.hs
- compiler/GHC/Types/Basic.hs
- compiler/GHC/Types/DefaultEnv.hs
- compiler/GHC/Types/Error.hs
- compiler/GHC/Types/Error/Codes.hs
- compiler/GHC/Types/Hint.hs
- compiler/GHC/Types/Hint/Ppr.hs
- compiler/GHC/Types/Name/Occurrence.hs
- compiler/GHC/Types/Name/Ppr.hs
- compiler/GHC/Types/Name/Reader.hs
- + compiler/GHC/Types/ThLevelIndex.hs
- compiler/GHC/Types/Unique.hs
- compiler/GHC/Unit/Env.hs
- compiler/GHC/Unit/External.hs
- compiler/GHC/Unit/Finder.hs
- compiler/GHC/Unit/Home/Graph.hs
- compiler/GHC/Unit/Home/PackageTable.hs
- compiler/GHC/Unit/Module/Deps.hs
- − compiler/GHC/Unit/Module/External/Graph.hs
- compiler/GHC/Unit/Module/Graph.hs
- compiler/GHC/Unit/Module/Imported.hs
- compiler/GHC/Unit/Module/ModNodeKey.hs
- compiler/GHC/Unit/Module/ModSummary.hs
- + compiler/GHC/Unit/Module/Stage.hs
- compiler/GHC/Unit/Types.hs
- compiler/GHC/Utils/Binary.hs
- compiler/GHC/Utils/Outputable.hs
- compiler/GHC/Utils/Panic/Plain.hs
- compiler/Language/Haskell/Syntax/Decls.hs
- compiler/Language/Haskell/Syntax/Expr.hs
- compiler/Language/Haskell/Syntax/Extension.hs
- compiler/Language/Haskell/Syntax/ImpExp.hs
- + compiler/Language/Haskell/Syntax/ImpExp/IsBoot.hs
- compiler/Language/Haskell/Syntax/Module/Name.hs
- compiler/ghc.cabal.in
- configure.ac
- docs/users_guide/9.14.1-notes.rst
- docs/users_guide/exts/control.rst
- docs/users_guide/exts/data_kinds.rst
- docs/users_guide/exts/explicit_namespaces.rst
- docs/users_guide/exts/instances.rst
- docs/users_guide/exts/pattern_synonyms.rst
- docs/users_guide/exts/template_haskell.rst
- docs/users_guide/ghci.rst
- docs/users_guide/javascript.rst
- docs/users_guide/phases.rst
- docs/users_guide/runtime_control.rst
- docs/users_guide/using-optimisation.rst
- docs/users_guide/using-warnings.rst
- ghc/GHCi/UI.hs
- ghc/GHCi/UI/Exception.hs
- ghc/GHCi/UI/Info.hs
- ghc/GHCi/UI/Monad.hs
- ghc/Main.hs
- ghc/ghc-bin.cabal.in
- hadrian/README.md
- hadrian/bindist/config.mk.in
- hadrian/doc/flavours.md
- hadrian/doc/user-settings.md
- hadrian/hadrian.cabal
- hadrian/src/Context.hs
- hadrian/src/Context/Path.hs
- hadrian/src/Flavour.hs
- hadrian/src/Flavour/Type.hs
- hadrian/src/Oracles/Flag.hs
- hadrian/src/Oracles/Setting.hs
- hadrian/src/Rules/BinaryDist.hs
- hadrian/src/Rules/Generate.hs
- hadrian/src/Settings/Builders/Cabal.hs
- hadrian/src/Settings/Builders/Ghc.hs
- hadrian/src/Settings/Builders/RunTest.hs
- hadrian/src/Settings/Default.hs
- hadrian/src/Settings/Flavours/Release.hs
- hadrian/src/Settings/Packages.hs
- hadrian/src/Settings/Warnings.hs
- libffi-tarballs
- libraries/Cabal
- libraries/Win32
- libraries/base/base.cabal.in
- libraries/base/changelog.md
- libraries/base/src/Control/Exception/Backtrace.hs
- − libraries/base/src/GHC/ExecutionStack/Internal.hs
- libraries/base/src/GHC/JS/Prim/Internal/Build.hs
- − libraries/base/src/GHC/TypeLits/Internal.hs
- − libraries/base/src/GHC/TypeNats/Internal.hs
- libraries/base/src/System/CPUTime/Windows.hsc
- libraries/base/tests/IO/Makefile
- libraries/base/tests/IO/withBinaryFile002.stderr
- libraries/base/tests/IO/withFile002.stderr
- libraries/base/tests/IO/withFileBlocking002.stderr
- libraries/base/tests/perf/encodingAllocations.hs
- libraries/containers
- libraries/directory
- libraries/ghc-boot/ghc-boot.cabal.in
- libraries/ghc-heap/ghc-heap.cabal.in
- libraries/ghc-internal/jsbits/base.js
- libraries/ghc-internal/jsbits/errno.js
- libraries/ghc-internal/src/GHC/Internal/Bignum/Integer.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fail.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Maybe.hs
- libraries/ghc-internal/src/GHC/Internal/Data/Typeable/Internal.hs
- libraries/ghc-internal/src/GHC/Internal/Exception/Backtrace.hs
- libraries/ghc-internal/src/GHC/Internal/Exception/Type.hs-boot
- libraries/ghc-internal/src/GHC/Internal/IO.hs-boot
- libraries/ghc-internal/src/GHC/Internal/IO/Exception.hs-boot
- libraries/ghc-internal/src/GHC/Internal/LanguageExtensions.hs
- libraries/ghc-internal/src/GHC/Internal/System/Posix/Internals.hs
- libraries/ghc-internal/src/GHC/Internal/Type/Reflection.hs
- libraries/ghc-internal/src/GHC/Internal/TypeLits.hs
- libraries/ghc-internal/src/GHC/Internal/TypeNats.hs
- libraries/ghc-internal/src/GHC/Internal/Wasm/Prim/Types.hs
- libraries/ghc-internal/tools/ucd2haskell/ucd2haskell.cabal
- libraries/ghci/GHCi/Message.hs
- libraries/ghci/GHCi/Run.hs
- libraries/ghci/ghci.cabal.in
- libraries/haskeline
- libraries/hpc
- libraries/process
- libraries/template-haskell/Language/Haskell/TH/Syntax.hs
- libraries/template-haskell/changelog.md
- libraries/unix
- llvm-targets
- m4/fp_cc_supports_target.m4
- m4/fp_gcc_supports_no_pie.m4
- m4/fp_setup_windows_toolchain.m4
- m4/fptools_set_c_ld_flags.m4
- m4/fptools_set_platform_vars.m4
- m4/ghc_tables_next_to_code.m4
- rts/Disassembler.c
- rts/Exception.cmm
- rts/Hash.c
- rts/Hash.h
- rts/Interpreter.c
- rts/Linker.c
- rts/LinkerInternals.h
- rts/PathUtils.c
- rts/PathUtils.h
- rts/PrimOps.cmm
- rts/RtsAPI.c
- rts/RtsUtils.c
- rts/StgCRun.c
- rts/include/RtsAPI.h
- rts/include/rts/Bytecodes.h
- rts/include/rts/storage/Closures.h
- rts/linker/Elf.c
- rts/linker/LoadNativeObjPosix.c
- rts/linker/MachO.c
- rts/linker/PEi386.c
- rts/linker/PEi386.h
- + rts/linker/ProddableBlocks.c
- + rts/linker/ProddableBlocks.h
- rts/rts.cabal
- rts/sm/Storage.h
- rts/win32/veh_excn.c
- testsuite/config/ghc
- testsuite/driver/testlib.py
- testsuite/ghc-config/ghc-config.hs
- testsuite/mk/boilerplate.mk
- testsuite/tests/ado/ado004.stderr
- testsuite/tests/annotations/should_fail/annfail03.stderr
- testsuite/tests/annotations/should_fail/annfail04.stderr
- testsuite/tests/annotations/should_fail/annfail06.stderr
- testsuite/tests/annotations/should_fail/annfail09.stderr
- testsuite/tests/backpack/should_fail/bkpfail51.stderr
- testsuite/tests/bytecode/T22376/all.T
- + testsuite/tests/bytecode/T25975.hs
- + testsuite/tests/bytecode/T25975.stdout
- testsuite/tests/bytecode/all.T
- testsuite/tests/callarity/unittest/CallArity1.hs
- + testsuite/tests/cmm/should_run/T25601.hs
- + testsuite/tests/cmm/should_run/T25601.stdout
- + testsuite/tests/cmm/should_run/T25601a.cmm
- testsuite/tests/cmm/should_run/all.T
- + testsuite/tests/codeGen/should_run/T26061.hs
- + testsuite/tests/codeGen/should_run/T26061.stdout
- testsuite/tests/codeGen/should_run/all.T
- testsuite/tests/count-deps/CountDepsAst.stdout
- testsuite/tests/count-deps/CountDepsParser.stdout
- testsuite/tests/deSugar/should_run/DsDoExprFailMsg.stderr
- testsuite/tests/deSugar/should_run/DsMonadCompFailMsg.stderr
- + testsuite/tests/default/T25912.hs
- + testsuite/tests/default/T25912.stdout
- + testsuite/tests/default/T25912_helper.hs
- + testsuite/tests/default/T25914.hs
- + testsuite/tests/default/T25934.hs
- testsuite/tests/default/all.T
- testsuite/tests/default/default-fail03.stderr
- + testsuite/tests/dependent/should_compile/GADTSingletons.hs
- + testsuite/tests/dependent/should_compile/T12088a.hs
- + testsuite/tests/dependent/should_compile/T12088b.hs
- + testsuite/tests/dependent/should_compile/T12088c.hs
- + testsuite/tests/dependent/should_compile/T12088d.hs
- + testsuite/tests/dependent/should_compile/T12088e.hs
- + testsuite/tests/dependent/should_compile/T12088f.hs
- + testsuite/tests/dependent/should_compile/T12088g.hs
- + testsuite/tests/dependent/should_compile/T12088i.hs
- + testsuite/tests/dependent/should_compile/T12088j.hs
- + testsuite/tests/dependent/should_compile/T12088mm1.hs
- + testsuite/tests/dependent/should_compile/T12088mm1_helper.hs
- + testsuite/tests/dependent/should_compile/T12088mm2.hs
- + testsuite/tests/dependent/should_compile/T12088mm2_helper.hs
- + testsuite/tests/dependent/should_compile/T12088mm3.hs
- + testsuite/tests/dependent/should_compile/T12088mm3_helper.hs
- + testsuite/tests/dependent/should_compile/T12088sg1.hs
- + testsuite/tests/dependent/should_compile/T12088sg2.hs
- + testsuite/tests/dependent/should_compile/T12088sg3.hs
- + testsuite/tests/dependent/should_compile/T12239.hs
- + testsuite/tests/dependent/should_compile/T13790.hs
- + testsuite/tests/dependent/should_compile/T14668a.hs
- + testsuite/tests/dependent/should_compile/T14668b.hs
- testsuite/tests/dependent/should_compile/T14729.stderr
- + testsuite/tests/dependent/should_compile/T15561.hs
- testsuite/tests/dependent/should_compile/T15743.stderr
- testsuite/tests/dependent/should_compile/T15743e.stderr
- + testsuite/tests/dependent/should_compile/T16410.hs
- + testsuite/tests/dependent/should_compile/T16448.hs
- + testsuite/tests/dependent/should_compile/T16693.hs
- + testsuite/tests/dependent/should_compile/T19611.hs
- + testsuite/tests/dependent/should_compile/T20875.hs
- + testsuite/tests/dependent/should_compile/T21172.hs
- + testsuite/tests/dependent/should_compile/T22257a.hs
- + testsuite/tests/dependent/should_compile/T22257b.hs
- + testsuite/tests/dependent/should_compile/T25238.hs
- + testsuite/tests/dependent/should_compile/T25834.hs
- testsuite/tests/dependent/should_compile/all.T
- testsuite/tests/dependent/should_fail/T11471.stderr
- testsuite/tests/dependent/should_fail/T13135_simple.stderr
- testsuite/tests/deriving/should_compile/T14682.stderr
- testsuite/tests/deriving/should_compile/T17339.stderr
- testsuite/tests/determinism/determ021/determ021.stdout
- testsuite/tests/diagnostic-codes/codes.stdout
- testsuite/tests/driver/Makefile
- testsuite/tests/driver/RecompExports/RecompExports1.stderr
- testsuite/tests/driver/RecompExports/RecompExports4.stderr
- testsuite/tests/driver/T20459.stderr
- testsuite/tests/driver/T24196/T24196.stderr
- testsuite/tests/driver/T24275/T24275.stderr
- + testsuite/tests/driver/T4437.stdout
- testsuite/tests/driver/T8526/T8526.stdout
- testsuite/tests/driver/all.T
- testsuite/tests/driver/fat-iface/fat014.stdout
- testsuite/tests/driver/json.stderr
- testsuite/tests/driver/json2.stderr
- testsuite/tests/driver/json_warn.stderr
- testsuite/tests/driver/multipleHomeUnits/multiGHCi.stderr
- testsuite/tests/ffi/should_run/all.T
- testsuite/tests/gadt/T19847a.stderr
- + testsuite/tests/gadt/T23298.hs
- + testsuite/tests/gadt/T23298.stderr
- testsuite/tests/gadt/all.T
- testsuite/tests/ghc-api/T6145.hs
- testsuite/tests/ghc-api/annotations-literals/literals.hs
- testsuite/tests/ghc-api/annotations-literals/parsed.hs
- testsuite/tests/ghc-api/apirecomp001/myghc.hs
- + testsuite/tests/ghc-api/fixed-nodes/FixedNodes.hs
- + testsuite/tests/ghc-api/fixed-nodes/FixedNodes.stdout
- + testsuite/tests/ghc-api/fixed-nodes/InterfaceModuleGraph.hs
- + testsuite/tests/ghc-api/fixed-nodes/InterfaceModuleGraph.stdout
- + testsuite/tests/ghc-api/fixed-nodes/Makefile
- + testsuite/tests/ghc-api/fixed-nodes/ModuleGraphInvariants.hs
- + testsuite/tests/ghc-api/fixed-nodes/ModuleGraphInvariants.stdout
- + testsuite/tests/ghc-api/fixed-nodes/T1.hs
- + testsuite/tests/ghc-api/fixed-nodes/T1A.hs
- + testsuite/tests/ghc-api/fixed-nodes/T1B.hs
- + testsuite/tests/ghc-api/fixed-nodes/T1C.hs
- + testsuite/tests/ghc-api/fixed-nodes/all.T
- + testsuite/tests/ghci.debugger/scripts/break031/Makefile
- + testsuite/tests/ghci.debugger/scripts/break031/a/A.hs
- + testsuite/tests/ghci.debugger/scripts/break031/all.T
- + testsuite/tests/ghci.debugger/scripts/break031/b/B.hs
- + testsuite/tests/ghci.debugger/scripts/break031/break031a.script
- + testsuite/tests/ghci.debugger/scripts/break031/break031a.stdout
- + testsuite/tests/ghci.debugger/scripts/break031/break031b.script
- + testsuite/tests/ghci.debugger/scripts/break031/break031b.stderr
- + testsuite/tests/ghci.debugger/scripts/break031/break031b.stdout
- + testsuite/tests/ghci.debugger/scripts/break031/unitA
- + testsuite/tests/ghci.debugger/scripts/break031/unitB
- + testsuite/tests/ghci/all.T
- + testsuite/tests/ghci/ghci-mem-primops.hs
- + testsuite/tests/ghci/ghci-mem-primops.script
- + testsuite/tests/ghci/ghci-mem-primops.stdout
- testsuite/tests/ghci/linking/dyn/T3372.hs
- + testsuite/tests/ghci/prog-mhu001/Makefile
- + testsuite/tests/ghci/prog-mhu001/all.T
- + testsuite/tests/ghci/prog-mhu001/e/E.hs
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001a.script
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001a.stdout
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001b.script
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001b.stdout
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001c.script
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001c.stdout
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001d.script
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001d.stdout
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001e.script
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001e.stdout
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001f.script
- + testsuite/tests/ghci/prog-mhu001/prog-mhu001f.stdout
- + testsuite/tests/ghci/prog-mhu001/unitE
- + testsuite/tests/ghci/prog-mhu001/unitE-main-is
- + testsuite/tests/ghci/prog-mhu002/Makefile
- + testsuite/tests/ghci/prog-mhu002/a/A.hs
- + testsuite/tests/ghci/prog-mhu002/all.T
- + testsuite/tests/ghci/prog-mhu002/b/B.hs
- + testsuite/tests/ghci/prog-mhu002/c/C.hs
- + testsuite/tests/ghci/prog-mhu002/d/Main.hs
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002a.script
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002a.stderr
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002a.stdout
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002b.script
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002b.stderr
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002b.stdout
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002c.script
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002c.stdout
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002d.script
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002d.stdout
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002e.script
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002e.stdout
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002f.script
- + testsuite/tests/ghci/prog-mhu002/prog-mhu002f.stdout
- + testsuite/tests/ghci/prog-mhu002/unitA
- + testsuite/tests/ghci/prog-mhu002/unitB
- + testsuite/tests/ghci/prog-mhu002/unitC
- + testsuite/tests/ghci/prog-mhu002/unitD
- + testsuite/tests/ghci/prog-mhu003/Makefile
- + testsuite/tests/ghci/prog-mhu003/a/A.hs
- + testsuite/tests/ghci/prog-mhu003/all.T
- + testsuite/tests/ghci/prog-mhu003/b/Foo.hs
- + testsuite/tests/ghci/prog-mhu003/c/C.hs
- + testsuite/tests/ghci/prog-mhu003/d/Foo.hs
- + testsuite/tests/ghci/prog-mhu003/prog-mhu003.script
- + testsuite/tests/ghci/prog-mhu003/prog-mhu003.stderr
- + testsuite/tests/ghci/prog-mhu003/prog-mhu003.stdout
- + testsuite/tests/ghci/prog-mhu003/unitA
- + testsuite/tests/ghci/prog-mhu003/unitB
- + testsuite/tests/ghci/prog-mhu003/unitC
- + testsuite/tests/ghci/prog-mhu003/unitD
- + testsuite/tests/ghci/prog-mhu004/Makefile
- + testsuite/tests/ghci/prog-mhu004/a/Foo.hs
- + testsuite/tests/ghci/prog-mhu004/all.T
- + testsuite/tests/ghci/prog-mhu004/b/Foo.hs
- + testsuite/tests/ghci/prog-mhu004/prog-mhu004a.script
- + testsuite/tests/ghci/prog-mhu004/prog-mhu004a.stderr
- + testsuite/tests/ghci/prog-mhu004/prog-mhu004a.stdout
- + testsuite/tests/ghci/prog-mhu004/prog-mhu004b.script
- + testsuite/tests/ghci/prog-mhu004/prog-mhu004b.stdout
- + testsuite/tests/ghci/prog-mhu004/unitA
- + testsuite/tests/ghci/prog-mhu004/unitB
- testsuite/tests/ghci/prog010/ghci.prog010.script
- testsuite/tests/ghci/prog018/prog018.stdout
- + testsuite/tests/ghci/prog020/A.hs
- + testsuite/tests/ghci/prog020/B.hs
- + testsuite/tests/ghci/prog020/Makefile
- + testsuite/tests/ghci/prog020/all.T
- + testsuite/tests/ghci/prog020/ghci.prog020.script
- + testsuite/tests/ghci/prog020/ghci.prog020.stderr
- + testsuite/tests/ghci/prog020/ghci.prog020.stdout
- + testsuite/tests/ghci/scripts/GhciPackageRename.hs
- + testsuite/tests/ghci/scripts/GhciPackageRename.script
- + testsuite/tests/ghci/scripts/GhciPackageRename.stdout
- testsuite/tests/ghci/scripts/T12550.stdout
- testsuite/tests/ghci/scripts/T13869.stdout
- testsuite/tests/ghci/scripts/T13997.stdout
- testsuite/tests/ghci/scripts/T17669.stdout
- testsuite/tests/ghci/scripts/T18330.stdout
- testsuite/tests/ghci/scripts/T1914.stdout
- testsuite/tests/ghci/scripts/T20217.stdout
- testsuite/tests/ghci/scripts/T20587.stdout
- testsuite/tests/ghci/scripts/T21110.stderr
- testsuite/tests/ghci/scripts/T4175.stdout
- testsuite/tests/ghci/scripts/T6105.stdout
- testsuite/tests/ghci/scripts/T8042.stdout
- testsuite/tests/ghci/scripts/T8042recomp.stdout
- testsuite/tests/ghci/scripts/T8959b.stderr
- testsuite/tests/ghci/scripts/all.T
- testsuite/tests/ghci/scripts/ghci024.stdout
- testsuite/tests/ghci/scripts/ghci024.stdout-mingw32
- testsuite/tests/ghci/scripts/ghci058.script
- testsuite/tests/ghci/scripts/ghci064.stdout
- + testsuite/tests/ghci/scripts/print-unicode-syntax.script
- + testsuite/tests/ghci/scripts/print-unicode-syntax.stderr
- + testsuite/tests/ghci/scripts/print-unicode-syntax.stdout
- testsuite/tests/ghci/should_run/T11825.stdout
- testsuite/tests/ghci/should_run/TopEnvIface.stdout
- testsuite/tests/haddock/should_compile_flag_haddock/T17544_kw.hs
- testsuite/tests/haddock/should_compile_flag_haddock/T17544_kw.stderr
- testsuite/tests/hpc/fork/hpc_fork.stdout
- testsuite/tests/hpc/function/tough.stdout
- testsuite/tests/hpc/function2/tough2.stdout
- testsuite/tests/hpc/simple/hpc001.stdout
- testsuite/tests/indexed-types/should_compile/T15711.stderr
- testsuite/tests/indexed-types/should_compile/T15852.stderr
- testsuite/tests/indexed-types/should_compile/T3017.stderr
- testsuite/tests/indexed-types/should_fail/T3330c.stderr
- testsuite/tests/indexed-types/should_fail/T4174.stderr
- testsuite/tests/indexed-types/should_fail/T8227.stderr
- testsuite/tests/indexed-types/should_fail/T8550.stderr
- testsuite/tests/indexed-types/should_fail/T9662.stderr
- testsuite/tests/interface-stability/base-exports.stdout
- testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs
- testsuite/tests/interface-stability/base-exports.stdout-mingw32
- testsuite/tests/interface-stability/base-exports.stdout-ws-32
- testsuite/tests/interface-stability/template-haskell-exports.stdout
- + testsuite/tests/lib/integer/T26017.hs
- + testsuite/tests/lib/integer/T26017.stdout
- testsuite/tests/lib/integer/all.T
- testsuite/tests/lib/integer/integerRecipMod.hs
- testsuite/tests/lib/integer/integerRecipMod.stdout
- testsuite/tests/linear/should_fail/LinearTHFail.stderr
- testsuite/tests/linters/notes.stdout
- testsuite/tests/module/T21826.stderr
- testsuite/tests/module/mod185.stderr
- testsuite/tests/module/mod58.stderr
- testsuite/tests/module/mod81.stderr
- testsuite/tests/module/mod91.stderr
- testsuite/tests/numeric/should_run/all.T
- testsuite/tests/numeric/should_run/foundation.hs
- testsuite/tests/numeric/should_run/foundation.stdout
- testsuite/tests/parser/should_compile/DumpParsedAst.stderr
- testsuite/tests/parser/should_compile/DumpRenamedAst.stderr
- testsuite/tests/parser/should_compile/DumpSemis.stderr
- testsuite/tests/parser/should_compile/KindSigs.stderr
- testsuite/tests/parser/should_compile/T14189.stderr
- + testsuite/tests/parser/should_compile/T25900.hs
- + testsuite/tests/parser/should_compile/T25900.stderr
- + testsuite/tests/parser/should_compile/T25900_noext.hs
- + testsuite/tests/parser/should_compile/T25900_noext.stderr
- testsuite/tests/parser/should_compile/all.T
- + testsuite/tests/parser/should_run/T25937.hs
- + testsuite/tests/parser/should_run/T25937.stdout
- testsuite/tests/parser/should_run/all.T
- + testsuite/tests/parser/should_run/parser_unit_tests.hs
- testsuite/tests/partial-sigs/should_compile/ADT.stderr
- testsuite/tests/partial-sigs/should_compile/AddAndOr1.stderr
- testsuite/tests/partial-sigs/should_compile/AddAndOr2.stderr
- testsuite/tests/partial-sigs/should_compile/AddAndOr3.stderr
- testsuite/tests/partial-sigs/should_compile/AddAndOr4.stderr
- testsuite/tests/partial-sigs/should_compile/AddAndOr5.stderr
- testsuite/tests/partial-sigs/should_compile/AddAndOr6.stderr
- testsuite/tests/partial-sigs/should_compile/BoolToBool.stderr
- testsuite/tests/partial-sigs/should_compile/DataFamilyInstanceLHS.stderr
- testsuite/tests/partial-sigs/should_compile/Defaulting1MROn.stderr
- testsuite/tests/partial-sigs/should_compile/Defaulting2MROff.stderr
- testsuite/tests/partial-sigs/should_compile/Defaulting2MROn.stderr
- testsuite/tests/partial-sigs/should_compile/Either.stderr
- testsuite/tests/partial-sigs/should_compile/EqualityConstraint.stderr
- testsuite/tests/partial-sigs/should_compile/Every.stderr
- testsuite/tests/partial-sigs/should_compile/EveryNamed.stderr
- testsuite/tests/partial-sigs/should_compile/ExpressionSig.stderr
- testsuite/tests/partial-sigs/should_compile/ExpressionSigNamed.stderr
- testsuite/tests/partial-sigs/should_compile/ExtraConstraints1.stderr
- testsuite/tests/partial-sigs/should_compile/ExtraConstraints2.stderr
- testsuite/tests/partial-sigs/should_compile/ExtraConstraints3.stderr
- testsuite/tests/partial-sigs/should_compile/ExtraNumAMROff.stderr
- testsuite/tests/partial-sigs/should_compile/ExtraNumAMROn.stderr
- testsuite/tests/partial-sigs/should_compile/Forall1.stderr
- testsuite/tests/partial-sigs/should_compile/GenNamed.stderr
- testsuite/tests/partial-sigs/should_compile/HigherRank1.stderr
- testsuite/tests/partial-sigs/should_compile/HigherRank2.stderr
- testsuite/tests/partial-sigs/should_compile/LocalDefinitionBug.stderr
- testsuite/tests/partial-sigs/should_compile/Meltdown.stderr
- testsuite/tests/partial-sigs/should_compile/MonoLocalBinds.stderr
- testsuite/tests/partial-sigs/should_compile/NamedTyVar.stderr
- testsuite/tests/partial-sigs/should_compile/NamedWildcardInDataFamilyInstanceLHS.stderr
- testsuite/tests/partial-sigs/should_compile/NamedWildcardInTypeFamilyInstanceLHS.stderr
- testsuite/tests/partial-sigs/should_compile/ParensAroundContext.stderr
- testsuite/tests/partial-sigs/should_compile/PatBind.stderr
- testsuite/tests/partial-sigs/should_compile/PatBind2.stderr
- testsuite/tests/partial-sigs/should_compile/PatternSig.stderr
- testsuite/tests/partial-sigs/should_compile/Recursive.stderr
- testsuite/tests/partial-sigs/should_compile/ScopedNamedWildcards.stderr
- testsuite/tests/partial-sigs/should_compile/ScopedNamedWildcardsGood.stderr
- testsuite/tests/partial-sigs/should_compile/ShowNamed.stderr
- testsuite/tests/partial-sigs/should_compile/SimpleGen.stderr
- testsuite/tests/partial-sigs/should_compile/SkipMany.stderr
- testsuite/tests/partial-sigs/should_compile/SomethingShowable.stderr
- testsuite/tests/partial-sigs/should_compile/TypeFamilyInstanceLHS.stderr
- testsuite/tests/partial-sigs/should_compile/Uncurry.stderr
- testsuite/tests/partial-sigs/should_compile/UncurryNamed.stderr
- testsuite/tests/partial-sigs/should_compile/WarningWildcardInstantiations.stderr
- testsuite/tests/partial-sigs/should_fail/T10999.stderr
- testsuite/tests/partial-sigs/should_fail/T14040a.stderr
- testsuite/tests/partial-sigs/should_fail/T14584.stderr
- testsuite/tests/patsyn/should_compile/ImpExp_Exp.hs
- testsuite/tests/patsyn/should_compile/T11959.hs
- testsuite/tests/patsyn/should_compile/T11959.stderr
- testsuite/tests/patsyn/should_compile/T11959Lib.hs
- testsuite/tests/patsyn/should_compile/T13350/boolean/Boolean.hs
- testsuite/tests/patsyn/should_compile/T22521.hs
- testsuite/tests/patsyn/should_compile/T9857.hs
- testsuite/tests/patsyn/should_compile/export.hs
- testsuite/tests/perf/compiler/Makefile
- testsuite/tests/perf/compiler/WWRec.hs
- testsuite/tests/perf/compiler/all.T
- testsuite/tests/perf/compiler/hard_hole_fits.stderr
- testsuite/tests/perf/should_run/ByteCodeAsm.hs
- testsuite/tests/plugins/defaulting-plugin/DefaultLifted.hs
- testsuite/tests/pmcheck/complete_sigs/T25115a.hs
- testsuite/tests/pmcheck/should_compile/T11822.hs
- testsuite/tests/polykinds/T14172.stderr
- testsuite/tests/polykinds/T14270.hs
- testsuite/tests/polykinds/T14846.stderr
- testsuite/tests/polykinds/T15592.stderr
- testsuite/tests/polykinds/T15592b.stderr
- testsuite/tests/printer/T17697.stderr
- testsuite/tests/printer/T18052a.stderr
- testsuite/tests/quasiquotation/T3953.stderr
- testsuite/tests/quasiquotation/T7918.hs
- testsuite/tests/quasiquotation/qq001/qq001.stderr
- testsuite/tests/quasiquotation/qq002/qq002.stderr
- testsuite/tests/quasiquotation/qq003/qq003.stderr
- testsuite/tests/quasiquotation/qq004/qq004.stderr
- + testsuite/tests/quotes/QQError.hs
- + testsuite/tests/quotes/QQError.stderr
- testsuite/tests/quotes/T10384.stderr
- + testsuite/tests/quotes/T5721.stderr
- testsuite/tests/quotes/TH_localname.stderr
- testsuite/tests/quotes/all.T
- testsuite/tests/rebindable/DoRestrictedM.hs
- testsuite/tests/rename/should_compile/T12548.hs
- + testsuite/tests/rename/should_compile/T22581c.hs
- + testsuite/tests/rename/should_compile/T22581c_helper.hs
- + testsuite/tests/rename/should_compile/T22581d.script
- + testsuite/tests/rename/should_compile/T22581d.stdout
- + testsuite/tests/rename/should_compile/T25899a.hs
- + testsuite/tests/rename/should_compile/T25899b.hs
- + testsuite/tests/rename/should_compile/T25899c.hs
- + testsuite/tests/rename/should_compile/T25899c_helper.hs
- + testsuite/tests/rename/should_compile/T25899d.script
- + testsuite/tests/rename/should_compile/T25899d.stdout
- + testsuite/tests/rename/should_compile/T25983a.hs
- + testsuite/tests/rename/should_compile/T25983a.stderr
- + testsuite/tests/rename/should_compile/T25983b.hs
- + testsuite/tests/rename/should_compile/T25983b.stderr
- + testsuite/tests/rename/should_compile/T25983c.hs
- + testsuite/tests/rename/should_compile/T25983c.stderr
- + testsuite/tests/rename/should_compile/T25983d.hs
- + testsuite/tests/rename/should_compile/T25983d.stderr
- + testsuite/tests/rename/should_compile/T25983e.hs
- + testsuite/tests/rename/should_compile/T25983e.stderr
- + testsuite/tests/rename/should_compile/T25983f.hs
- + testsuite/tests/rename/should_compile/T25983f.stderr
- + testsuite/tests/rename/should_compile/T25983g.hs
- + testsuite/tests/rename/should_compile/T25983g.stderr
- + testsuite/tests/rename/should_compile/T25984a.hs
- + testsuite/tests/rename/should_compile/T25984a.stderr
- + testsuite/tests/rename/should_compile/T25984a_helper.hs
- + testsuite/tests/rename/should_compile/T25991a.hs
- + testsuite/tests/rename/should_compile/T25991a_helper.hs
- testsuite/tests/rename/should_compile/all.T
- + testsuite/tests/rename/should_fail/T22581a.hs
- + testsuite/tests/rename/should_fail/T22581a.stderr
- + testsuite/tests/rename/should_fail/T22581a_helper.hs
- + testsuite/tests/rename/should_fail/T22581b.hs
- + testsuite/tests/rename/should_fail/T22581b.stderr
- + testsuite/tests/rename/should_fail/T22581b_helper.hs
- testsuite/tests/rename/should_fail/T25056.stderr
- testsuite/tests/rename/should_fail/T25056a.hs
- + testsuite/tests/rename/should_fail/T25899e1.hs
- + testsuite/tests/rename/should_fail/T25899e1.stderr
- + testsuite/tests/rename/should_fail/T25899e2.hs
- + testsuite/tests/rename/should_fail/T25899e2.stderr
- + testsuite/tests/rename/should_fail/T25899e3.hs
- + testsuite/tests/rename/should_fail/T25899e3.stderr
- + testsuite/tests/rename/should_fail/T25899e_helper.hs
- + testsuite/tests/rename/should_fail/T25899f.hs
- + testsuite/tests/rename/should_fail/T25899f.stderr
- + testsuite/tests/rename/should_fail/T25899f_helper.hs
- + testsuite/tests/rename/should_fail/T25984b.hs
- + testsuite/tests/rename/should_fail/T25984b.stderr
- + testsuite/tests/rename/should_fail/T25991b1.hs
- + testsuite/tests/rename/should_fail/T25991b1.stderr
- + testsuite/tests/rename/should_fail/T25991b2.hs
- + testsuite/tests/rename/should_fail/T25991b2.stderr
- + testsuite/tests/rename/should_fail/T25991b_helper.hs
- testsuite/tests/rename/should_fail/T9006.stderr
- testsuite/tests/rename/should_fail/all.T
- testsuite/tests/rep-poly/RepPolyArgument.stderr
- testsuite/tests/rep-poly/RepPolyBackpack1.stderr
- testsuite/tests/rep-poly/RepPolyBinder.stderr
- testsuite/tests/rep-poly/RepPolyDoBind.stderr
- testsuite/tests/rep-poly/RepPolyDoBody1.stderr
- testsuite/tests/rep-poly/RepPolyDoBody2.stderr
- testsuite/tests/rep-poly/RepPolyLeftSection2.stderr
- testsuite/tests/rep-poly/RepPolyMagic.stderr
- testsuite/tests/rep-poly/RepPolyMcBind.stderr
- testsuite/tests/rep-poly/RepPolyMcBody.stderr
- testsuite/tests/rep-poly/RepPolyMcGuard.stderr
- testsuite/tests/rep-poly/RepPolyNPlusK.stderr
- testsuite/tests/rep-poly/RepPolyPatBind.stderr
- testsuite/tests/rep-poly/RepPolyRecordUpdate.stderr
- testsuite/tests/rep-poly/RepPolyRightSection.stderr
- testsuite/tests/rep-poly/RepPolyRule1.stderr
- testsuite/tests/rep-poly/RepPolyTuple.stderr
- testsuite/tests/rep-poly/RepPolyTuple4.stderr
- testsuite/tests/rep-poly/RepPolyTupleSection.stderr
- testsuite/tests/rep-poly/RepPolyWrappedVar.stderr
- testsuite/tests/rep-poly/T11473.stderr
- testsuite/tests/rep-poly/T12709.stderr
- testsuite/tests/rep-poly/T12973.stderr
- testsuite/tests/rep-poly/T13233.stderr
- testsuite/tests/rep-poly/T13929.stderr
- testsuite/tests/rep-poly/T14561.stderr
- testsuite/tests/rep-poly/T14561b.stderr
- testsuite/tests/rep-poly/T17817.stderr
- testsuite/tests/rep-poly/T19615.stderr
- testsuite/tests/rep-poly/T19709b.stderr
- testsuite/tests/rep-poly/T21906.stderr
- testsuite/tests/rep-poly/T23903.stderr
- + testsuite/tests/rep-poly/T26107.hs
- testsuite/tests/rep-poly/UnliftedNewtypesCoerceFail.stderr
- testsuite/tests/rep-poly/all.T
- testsuite/tests/roles/should_compile/Roles1.stderr
- testsuite/tests/roles/should_compile/Roles14.stderr
- testsuite/tests/roles/should_compile/Roles2.stderr
- testsuite/tests/roles/should_compile/Roles3.stderr
- testsuite/tests/roles/should_compile/Roles4.stderr
- testsuite/tests/roles/should_compile/T8958.stderr
- + testsuite/tests/rts/TestProddableBlockSet.c
- testsuite/tests/rts/all.T
- testsuite/tests/showIface/DocsInHiFile1.stdout
- testsuite/tests/showIface/DocsInHiFileTH.stdout
- testsuite/tests/showIface/HaddockIssue849.stdout
- testsuite/tests/showIface/HaddockOpts.stdout
- testsuite/tests/showIface/HaddockSpanIssueT24378.stdout
- testsuite/tests/showIface/LanguageExts.stdout
- testsuite/tests/showIface/MagicHashInHaddocks.stdout
- testsuite/tests/showIface/NoExportList.stdout
- testsuite/tests/showIface/Orphans.stdout
- testsuite/tests/showIface/PragmaDocs.stdout
- testsuite/tests/showIface/ReExports.stdout
- testsuite/tests/simplCore/should_compile/Makefile
- testsuite/tests/simplCore/should_compile/T15186.hs
- testsuite/tests/simplCore/should_compile/T15186A.hs
- testsuite/tests/simplCore/should_compile/T23307c.stderr
- + testsuite/tests/simplCore/should_compile/T25703.hs
- + testsuite/tests/simplCore/should_compile/T25703.stderr
- + testsuite/tests/simplCore/should_compile/T25703a.hs
- + testsuite/tests/simplCore/should_compile/T25703a.stderr
- + testsuite/tests/simplCore/should_compile/T25883.hs
- + testsuite/tests/simplCore/should_compile/T25883.substr-simpl
- + testsuite/tests/simplCore/should_compile/T25883b.hs
- + testsuite/tests/simplCore/should_compile/T25883b.substr-simpl
- + testsuite/tests/simplCore/should_compile/T25883c.hs
- + testsuite/tests/simplCore/should_compile/T25883c.substr-simpl
- + testsuite/tests/simplCore/should_compile/T25883d.hs
- + testsuite/tests/simplCore/should_compile/T25883d.stderr
- + testsuite/tests/simplCore/should_compile/T25883d_import.hs
- + testsuite/tests/simplCore/should_compile/T25965.hs
- + testsuite/tests/simplCore/should_compile/T25976.hs
- + testsuite/tests/simplCore/should_compile/T3990b.hs
- + testsuite/tests/simplCore/should_compile/T3990b.stdout
- + testsuite/tests/simplCore/should_compile/T3990c.hs
- + testsuite/tests/simplCore/should_compile/T3990c.stdout
- testsuite/tests/simplCore/should_compile/all.T
- testsuite/tests/simplCore/should_compile/simpl017.stderr
- testsuite/tests/simplCore/should_fail/T25672.stderr
- + testsuite/tests/simplCore/should_run/T23429.hs
- + testsuite/tests/simplCore/should_run/T23429.stdout
- testsuite/tests/simplCore/should_run/all.T
- + testsuite/tests/splice-imports/ClassA.hs
- + testsuite/tests/splice-imports/InstanceA.hs
- + testsuite/tests/splice-imports/Makefile
- + testsuite/tests/splice-imports/SI01.hs
- + testsuite/tests/splice-imports/SI01A.hs
- + testsuite/tests/splice-imports/SI02.hs
- + testsuite/tests/splice-imports/SI03.hs
- + testsuite/tests/splice-imports/SI03.stderr
- + testsuite/tests/splice-imports/SI04.hs
- + testsuite/tests/splice-imports/SI05.hs
- + testsuite/tests/splice-imports/SI05.stderr
- + testsuite/tests/splice-imports/SI05A.hs
- + testsuite/tests/splice-imports/SI06.hs
- + testsuite/tests/splice-imports/SI07.hs
- + testsuite/tests/splice-imports/SI07.stderr
- + testsuite/tests/splice-imports/SI07A.hs
- + testsuite/tests/splice-imports/SI08.hs
- + testsuite/tests/splice-imports/SI08.stderr
- + testsuite/tests/splice-imports/SI08_oneshot.stderr
- + testsuite/tests/splice-imports/SI09.hs
- + testsuite/tests/splice-imports/SI10.hs
- + testsuite/tests/splice-imports/SI13.hs
- + testsuite/tests/splice-imports/SI14.hs
- + testsuite/tests/splice-imports/SI14.stderr
- + testsuite/tests/splice-imports/SI15.hs
- + testsuite/tests/splice-imports/SI15.stderr
- + testsuite/tests/splice-imports/SI16.hs
- + testsuite/tests/splice-imports/SI16.stderr
- + testsuite/tests/splice-imports/SI17.hs
- + testsuite/tests/splice-imports/SI18.hs
- + testsuite/tests/splice-imports/SI18.stderr
- + testsuite/tests/splice-imports/SI19.hs
- + testsuite/tests/splice-imports/SI19A.hs
- + testsuite/tests/splice-imports/SI20.hs
- + testsuite/tests/splice-imports/SI20.stderr
- + testsuite/tests/splice-imports/SI21.hs
- + testsuite/tests/splice-imports/SI21.stderr
- + testsuite/tests/splice-imports/SI22.hs
- + testsuite/tests/splice-imports/SI22.stderr
- + testsuite/tests/splice-imports/SI23.hs
- + testsuite/tests/splice-imports/SI23A.hs
- + testsuite/tests/splice-imports/SI24.hs
- + testsuite/tests/splice-imports/SI25.hs
- + testsuite/tests/splice-imports/SI25.stderr
- + testsuite/tests/splice-imports/SI25Helper.hs
- + testsuite/tests/splice-imports/SI26.hs
- + testsuite/tests/splice-imports/SI27.hs
- + testsuite/tests/splice-imports/SI27.stderr
- + testsuite/tests/splice-imports/SI28.hs
- + testsuite/tests/splice-imports/SI28.stderr
- + testsuite/tests/splice-imports/SI29.hs
- + testsuite/tests/splice-imports/SI29.stderr
- + testsuite/tests/splice-imports/SI30.script
- + testsuite/tests/splice-imports/SI30.stdout
- + testsuite/tests/splice-imports/SI31.script
- + testsuite/tests/splice-imports/SI31.stderr
- + testsuite/tests/splice-imports/SI32.script
- + testsuite/tests/splice-imports/SI32.stdout
- + testsuite/tests/splice-imports/SI33.script
- + testsuite/tests/splice-imports/SI33.stdout
- + testsuite/tests/splice-imports/SI34.hs
- + testsuite/tests/splice-imports/SI34.stderr
- + testsuite/tests/splice-imports/SI34M1.hs
- + testsuite/tests/splice-imports/SI34M2.hs
- + testsuite/tests/splice-imports/SI35.hs
- + testsuite/tests/splice-imports/SI35A.hs
- + testsuite/tests/splice-imports/SI36.hs
- + testsuite/tests/splice-imports/SI36.stderr
- + testsuite/tests/splice-imports/SI36_A.hs
- + testsuite/tests/splice-imports/SI36_B1.hs
- + testsuite/tests/splice-imports/SI36_B2.hs
- + testsuite/tests/splice-imports/SI36_B3.hs
- + testsuite/tests/splice-imports/SI36_C1.hs
- + testsuite/tests/splice-imports/SI36_C2.hs
- + testsuite/tests/splice-imports/SI36_C3.hs
- + testsuite/tests/splice-imports/all.T
- + testsuite/tests/th/QQInQuote.hs
- + testsuite/tests/th/QQTopError.hs
- + testsuite/tests/th/QQTopError.stderr
- testsuite/tests/th/T10598_TH.stderr
- testsuite/tests/th/T14681.stderr
- testsuite/tests/th/T15321.stderr
- testsuite/tests/th/T15365.stderr
- testsuite/tests/th/T16976z.stderr
- testsuite/tests/th/T17804.stderr
- testsuite/tests/th/T17820a.stderr
- testsuite/tests/th/T17820b.stderr
- testsuite/tests/th/T17820c.stderr
- testsuite/tests/th/T17820d.stderr
- testsuite/tests/th/T17820e.stderr
- testsuite/tests/th/T1835.stdout
- testsuite/tests/th/T21547.stderr
- testsuite/tests/th/T23829_hasty.stderr
- testsuite/tests/th/T23829_hasty_b.stderr
- testsuite/tests/th/T23829_tardy.ghc.stderr
- testsuite/tests/th/T5508.stderr
- testsuite/tests/th/T5795.stderr
- testsuite/tests/th/TH_Lift.stderr
- testsuite/tests/th/TH_Roles2.stderr
- testsuite/tests/th/all.T
- testsuite/tests/th/overloaded/TH_overloaded_constraints_fail.stderr
- testsuite/tests/typecheck/no_skolem_info/T14040.stderr
- testsuite/tests/typecheck/should_compile/LoopOfTheDay1.hs
- testsuite/tests/typecheck/should_compile/LoopOfTheDay2.hs
- testsuite/tests/typecheck/should_compile/LoopOfTheDay3.hs
- testsuite/tests/typecheck/should_compile/T12763.stderr
- testsuite/tests/typecheck/should_compile/T18406b.stderr
- testsuite/tests/typecheck/should_compile/T18529.stderr
- testsuite/tests/typecheck/should_compile/T21023.stderr
- testsuite/tests/typecheck/should_compile/T25266a.stderr
- + testsuite/tests/typecheck/should_compile/T25960.hs
- + testsuite/tests/typecheck/should_compile/T25992.hs
- + testsuite/tests/typecheck/should_compile/T25992.stderr
- + testsuite/tests/typecheck/should_compile/T26020.hs
- + testsuite/tests/typecheck/should_compile/T26020a.hs
- + testsuite/tests/typecheck/should_compile/T26020a_help.hs
- + testsuite/tests/typecheck/should_compile/T26030.hs
- testsuite/tests/typecheck/should_compile/T7050.stderr
- testsuite/tests/typecheck/should_compile/TypeRepCon.hs
- testsuite/tests/typecheck/should_compile/all.T
- testsuite/tests/typecheck/should_compile/subsumption_sort_hole_fits.stderr
- testsuite/tests/typecheck/should_compile/valid_hole_fits.stderr
- testsuite/tests/typecheck/should_fail/T12729.stderr
- testsuite/tests/typecheck/should_fail/T16204c.stderr
- testsuite/tests/typecheck/should_fail/T18851.stderr
- + testsuite/tests/typecheck/should_fail/T25004k.hs
- + testsuite/tests/typecheck/should_fail/T25004k.stderr
- + testsuite/tests/typecheck/should_fail/T25950.hs
- + testsuite/tests/typecheck/should_fail/T25950.stderr
- + testsuite/tests/typecheck/should_fail/T26004.hs
- + testsuite/tests/typecheck/should_fail/T26004.stderr
- + testsuite/tests/typecheck/should_fail/T26015.hs
- + testsuite/tests/typecheck/should_fail/T26015.stderr
- testsuite/tests/typecheck/should_fail/T3966.stderr
- + testsuite/tests/typecheck/should_fail/T3966b.hs
- + testsuite/tests/typecheck/should_fail/T3966b.stderr
- testsuite/tests/typecheck/should_fail/T6018fail.stderr
- testsuite/tests/typecheck/should_fail/T7453.stderr
- testsuite/tests/typecheck/should_fail/T7696.stderr
- testsuite/tests/typecheck/should_fail/T8603.stderr
- testsuite/tests/typecheck/should_fail/all.T
- testsuite/tests/typecheck/should_fail/tcfail097.stderr
- + testsuite/tests/typecheck/should_run/T25998.hs
- + testsuite/tests/typecheck/should_run/T25998.stdout
- testsuite/tests/typecheck/should_run/all.T
- testsuite/tests/unboxedsums/unpack_sums_5.stderr
- + testsuite/tests/vdq-rta/should_fail/T23738_fail_pun.hs
- + testsuite/tests/vdq-rta/should_fail/T23738_fail_pun.stderr
- testsuite/tests/vdq-rta/should_fail/all.T
- testsuite/tests/warnings/should_compile/DataToTagWarnings.hs
- testsuite/tests/warnings/should_compile/T14794a.hs
- testsuite/tests/warnings/should_compile/T14794a.stderr
- testsuite/tests/warnings/should_compile/T14794b.hs
- testsuite/tests/warnings/should_compile/T14794b.stderr
- testsuite/tests/warnings/should_compile/T14794c.hs
- testsuite/tests/warnings/should_compile/T14794c.stderr
- testsuite/tests/warnings/should_compile/T14794d.hs
- testsuite/tests/warnings/should_compile/T14794d.stderr
- testsuite/tests/warnings/should_compile/T14794e.hs
- testsuite/tests/warnings/should_compile/T14794e.stderr
- testsuite/tests/warnings/should_compile/T14794f.hs
- testsuite/tests/warnings/should_compile/T14794f.stderr
- testsuite/tests/wcompat-warnings/Template.hs
- + testsuite/tests/wcompat-warnings/WCompatWarningsOn.stderr
- utils/check-exact/ExactPrint.hs
- utils/count-deps/Main.hs
- utils/genprimopcode/Main.hs
- utils/genprimopcode/Syntax.hs
- utils/ghc-toolchain/exe/Main.hs
- utils/ghc-toolchain/src/GHC/Toolchain/Tools/Cc.hs
- utils/ghc-toolchain/src/GHC/Toolchain/Tools/Link.hs
- utils/haddock/haddock-api/resources/html/Linuwial.std-theme/linuwial.css
- utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Parser.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs
- utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Utils.hs
- utils/haddock/haddock-api/src/Haddock/Interface.hs
- utils/haddock/haddock-api/src/Haddock/Interface/LexParseRn.hs
- utils/haddock/haddock-library/haddock-library.cabal
- utils/haddock/haddock-library/src/Documentation/Haddock/Parser.hs
- utils/haddock/haddock-library/test/Documentation/Haddock/ParserSpec.hs
- utils/haddock/html-test/ref/Bug1004.html
- utils/haddock/html-test/ref/Bug548.html
- utils/haddock/html-test/ref/Bug973.html
- utils/haddock/html-test/ref/Hash.html
- utils/haddock/html-test/ref/ImplicitParams.html
- utils/haddock/html-test/ref/Instances.html
- utils/haddock/html-test/ref/PatternSyns.html
- utils/haddock/html-test/ref/TypeOperators.html
- utils/haddock/html-test/src/TypeOperators.hs
- utils/haddock/hypsrc-test/ref/src/Quasiquoter.html
- utils/hpc
- utils/hsc2hs
- utils/iserv/iserv.cabal.in
- utils/llvm-targets/gen-data-layout.sh
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/d56460b87cf0304f633f53737b369b…
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/d56460b87cf0304f633f53737b369b…
You're receiving this email because of your account on gitlab.haskell.org.
1
0
[Git][ghc/ghc][wip/T22859] 13 commits: Hadrian: Add option to generate .hie files for stage1 libraries
by Teo Camarasu (＠teo) 17 Jun '25
by Teo Camarasu (＠teo) 17 Jun '25
17 Jun '25
Teo Camarasu pushed to branch wip/T22859 at Glasgow Haskell Compiler / GHC
Commits:
35826d8b by Matthew Pickering at 2025-06-08T22:00:41+01:00
Hadrian: Add option to generate .hie files for stage1 libraries
The +hie_files flavour transformer can be enabled to produce hie files
for stage1 libraries. The hie files are produced in the
"extra-compilation-artifacts" folder and copied into the resulting
bindist.
At the moment the hie files are not produced for the release flavour,
they add about 170M to the final bindist.
Towards #16901
- - - - -
e2467dbd by Ryan Hendrickson at 2025-06-09T13:07:05-04:00
Fix various failures to -fprint-unicode-syntax
- - - - -
1d99d3e4 by maralorn at 2025-06-12T03:47:39-04:00
Add necessary flag for js linking
- - - - -
974d5734 by maralorn at 2025-06-12T03:47:39-04:00
Don’t use additional linker flags to detect presence of -fno-pie in configure.ac
This mirrors the behavior of ghc-toolchain
- - - - -
1e9eb118 by Andrew Lelechenko at 2025-06-12T03:48:21-04:00
Add HasCallStack to Control.Monad.Fail.fail
CLC proposal https://github.com/haskell/core-libraries-committee/issues/327
2% compile-time allocations increase in T3064, likely because `fail`
is now marginally more expensive to compile.
Metric Increase:
T3064
- - - - -
6d12060f by meooow25 at 2025-06-12T14:26:07-04:00
Bump containers submodule to 0.8
Also
* Disable -Wunused-imports for containers
* Allow containers-0.8 for in-tree packages
* Bump some submodules so that they allow containers-0.8. These are not
at any particular versions.
* Remove unused deps containers and split from ucd2haskell
* Fix tests affected by the new containers and hpc-bin
- - - - -
537bd233 by Peng Fan at 2025-06-12T14:27:02-04:00
NCG/LA64: Optimize code generation and reduce build-directory size.
1. makeFarBranches: Prioritize fewer instruction sequences.
2. Prefer instructions with immediate numbers to reduce register moves,
e.g. andi,ori,xori,addi.
3. Ppr: Remove unnecessary judgments.
4. genJump: Avoid "ld+jr" as much as possible.
5. BCOND and BCOND1: Implement conditional jumps with two jump ranges,
with limited choice of the shortest.
6. Implement FSQRT, CLT, CTZ.
7. Remove unnecessary code.
- - - - -
19f20861 by Simon Peyton Jones at 2025-06-13T09:51:11-04:00
Improve redundant constraints for instance decls
Addresses #25992, which showed that the default methods
of an instance decl could make GHC fail to report redundant
constraints.
Figuring out how to do this led me to refactor the computation
of redundant constraints. See the entirely rewritten
Note [Tracking redundant constraints]
in GHC.Tc.Solver.Solve
- - - - -
1d02798e by Matthew Pickering at 2025-06-13T09:51:54-04:00
Refactor the treatment of nested Template Haskell splices
* The difference between a normal splice, a quasiquoter and implicit
splice caused by lifting is stored in the AST after renaming.
* Information that the renamer learns about splices is stored in the
relevant splice extension points (XUntypedSpliceExpr, XQuasiQuote).
* Normal splices and quasi quotes record the flavour of splice
(exp/pat/dec etc)
* Implicit lifting stores information about why the lift was attempted,
so if it fails, that can be reported to the user.
* After renaming, the decision taken to attempt to implicitly lift a
variable is stored in the `XXUntypedSplice` extension field in the
`HsImplicitLiftSplice` constructor.
* Since all the information is stored in the AST, in `HsUntypedSplice`,
the type of `PendingRnSplice` now just stores a `HsUntypedSplice`.
* Error messages since the original program can be easily
printed, this is noticeable in the case of implicit lifting.
* The user-written syntax is directly type-checked. Before, some
desugaring took place in the
* Fixes .hie files to work better with nested splices (nested splices
are not indexed)
* The location of the quoter in a quasiquote is now located, so error
messages will precisely point to it (and again, it is indexed by hie
files)
In the future, the typechecked AST should also retain information about
the splices and the specific desugaring being left to the desugarer.
Also, `runRnSplice` should call `tcUntypedSplice`, otherwise the
typechecking logic is duplicated (see the `QQError` and `QQTopError`
tests for a difference caused by this).
- - - - -
f93798ba by Cheng Shao at 2025-06-13T09:52:35-04:00
libffi: update to 3.5.1
Bumps libffi submodule.
- - - - -
c7aa0c10 by Andreas Klebinger at 2025-06-15T05:47:24-04:00
Revert "Specialise: Don't float out constraint components."
This reverts commit c9abb87ccc0c91cd94f42b3e36270158398326ef.
Turns out two benchmarks from #19747 regresses by a factor of 7-8x if
we do not float those out.
- - - - -
fd998679 by Krzysztof Gogolewski at 2025-06-15T05:48:06-04:00
Fix EPT enforcement when mixing unboxed tuples and non-tuples
The code was assuming that an alternative cannot be returning a normal
datacon and an unboxed tuple at the same time. However, as seen in #26107,
this can happen when using a GADT to refine the representation type.
The solution is just to conservatively return TagDunno.
- - - - -
1eed2b4c by Teo Camarasu at 2025-06-17T19:30:25+01:00
Implement user-defined allocation limit handlers
Allocation Limits allow killing a thread if they allocate more than a
user-specified limit.
We extend this feature to allow more versatile behaviour.
- We allow not killing the thread if the limit is exceeded.
- We allow setting a custom handler to be called when the limit is exceeded.
User-specified allocation limit handlers run in a fresh thread and are passed
the ThreadId of the thread that exceeded its limit.
We introduce utility functions for getting and setting the allocation
limits of other threads, so that users can reset the limit of a thread
from a handler. Both of these are somewhat coarse-grained as we are
unaware of the allocations in the current nursery chunk.
We provide several examples of usages in testsuite/tests/rts/T22859.hs
Resolves #22859
- - - - -
153 changed files:
- compiler/GHC/Builtin/Names/TH.hs
- compiler/GHC/Builtin/primops.txt.pp
- compiler/GHC/CmmToAsm/LA64.hs
- compiler/GHC/CmmToAsm/LA64/CodeGen.hs
- compiler/GHC/CmmToAsm/LA64/Instr.hs
- compiler/GHC/CmmToAsm/LA64/Ppr.hs
- compiler/GHC/Core/Opt/Specialise.hs
- compiler/GHC/Hs/Binds.hs
- compiler/GHC/Hs/Decls.hs
- compiler/GHC/Hs/Expr.hs
- compiler/GHC/Hs/Expr.hs-boot
- compiler/GHC/Hs/Instances.hs
- compiler/GHC/HsToCore/Quote.hs
- compiler/GHC/Iface/Ext/Ast.hs
- compiler/GHC/Iface/Syntax.hs
- compiler/GHC/Iface/Type.hs
- compiler/GHC/Parser.y
- compiler/GHC/Parser/Lexer.x
- compiler/GHC/Parser/PostProcess.hs
- compiler/GHC/Rename/Expr.hs
- compiler/GHC/Rename/Splice.hs
- compiler/GHC/Stg/EnforceEpt/Types.hs
- compiler/GHC/StgToCmm/Prim.hs
- compiler/GHC/StgToJS/Prim.hs
- compiler/GHC/Tc/Errors.hs
- compiler/GHC/Tc/Errors/Ppr.hs
- compiler/GHC/Tc/Gen/App.hs
- compiler/GHC/Tc/Gen/Expr.hs
- compiler/GHC/Tc/Gen/Head.hs
- compiler/GHC/Tc/Gen/Splice.hs
- compiler/GHC/Tc/Gen/Splice.hs-boot
- compiler/GHC/Tc/Solver/Default.hs
- compiler/GHC/Tc/Solver/InertSet.hs
- compiler/GHC/Tc/Solver/Solve.hs
- compiler/GHC/Tc/TyCl/Instance.hs
- compiler/GHC/Tc/Types/Constraint.hs
- compiler/GHC/Tc/Types/ErrCtxt.hs
- compiler/GHC/Tc/Types/Evidence.hs
- compiler/GHC/Tc/Types/Origin.hs
- compiler/GHC/Tc/Types/TH.hs
- compiler/GHC/Tc/Utils/Concrete.hs
- compiler/GHC/Tc/Utils/Instantiate.hs
- compiler/GHC/Tc/Utils/TcMType.hs
- compiler/GHC/ThToHs.hs
- compiler/GHC/Types/Name/Reader.hs
- compiler/GHC/Types/ThLevelIndex.hs
- compiler/Language/Haskell/Syntax/Expr.hs
- compiler/Language/Haskell/Syntax/Extension.hs
- compiler/ghc.cabal.in
- ghc/ghc-bin.cabal.in
- hadrian/doc/flavours.md
- hadrian/doc/user-settings.md
- hadrian/hadrian.cabal
- hadrian/src/Context.hs
- hadrian/src/Context/Path.hs
- hadrian/src/Flavour.hs
- hadrian/src/Flavour/Type.hs
- hadrian/src/Settings/Builders/Ghc.hs
- hadrian/src/Settings/Default.hs
- hadrian/src/Settings/Flavours/Release.hs
- hadrian/src/Settings/Warnings.hs
- libffi-tarballs
- libraries/base/changelog.md
- libraries/base/tests/IO/withBinaryFile002.stderr
- libraries/base/tests/IO/withFile002.stderr
- libraries/base/tests/IO/withFileBlocking002.stderr
- libraries/containers
- libraries/ghc-boot/ghc-boot.cabal.in
- libraries/ghc-experimental/ghc-experimental.cabal.in
- + libraries/ghc-experimental/src/System/Mem/Experimental.hs
- libraries/ghc-heap/ghc-heap.cabal.in
- libraries/ghc-internal/ghc-internal.cabal.in
- + libraries/ghc-internal/src/GHC/Internal/AllocationLimitHandler.hs
- libraries/ghc-internal/src/GHC/Internal/Control/Monad/Fail.hs
- libraries/ghc-internal/src/GHC/Internal/Exception/Type.hs-boot
- libraries/ghc-internal/src/GHC/Internal/IO.hs-boot
- libraries/ghc-internal/src/GHC/Internal/IO/Exception.hs-boot
- libraries/ghc-internal/tools/ucd2haskell/ucd2haskell.cabal
- libraries/ghci/ghci.cabal.in
- libraries/haskeline
- libraries/hpc
- m4/fp_gcc_supports_no_pie.m4
- m4/fptools_set_c_ld_flags.m4
- rts/Prelude.h
- rts/PrimOps.cmm
- rts/RtsStartup.c
- rts/RtsSymbols.c
- rts/Schedule.c
- rts/external-symbols.list.in
- rts/include/rts/storage/GC.h
- rts/include/rts/storage/TSO.h
- rts/include/stg/MiscClosures.h
- testsuite/tests/deSugar/should_run/DsDoExprFailMsg.stderr
- testsuite/tests/deSugar/should_run/DsMonadCompFailMsg.stderr
- testsuite/tests/dependent/should_fail/T13135_simple.stderr
- testsuite/tests/diagnostic-codes/codes.stdout
- testsuite/tests/ghci/scripts/T12550.stdout
- testsuite/tests/ghci/scripts/T8959b.stderr
- testsuite/tests/ghci/scripts/all.T
- + testsuite/tests/ghci/scripts/print-unicode-syntax.script
- + testsuite/tests/ghci/scripts/print-unicode-syntax.stderr
- + testsuite/tests/ghci/scripts/print-unicode-syntax.stdout
- testsuite/tests/ghci/should_run/T11825.stdout
- testsuite/tests/hpc/fork/hpc_fork.stdout
- testsuite/tests/hpc/function/tough.stdout
- testsuite/tests/hpc/function2/tough2.stdout
- testsuite/tests/hpc/simple/hpc001.stdout
- testsuite/tests/interface-stability/base-exports.stdout
- testsuite/tests/interface-stability/base-exports.stdout-javascript-unknown-ghcjs
- testsuite/tests/interface-stability/base-exports.stdout-mingw32
- testsuite/tests/interface-stability/base-exports.stdout-ws-32
- testsuite/tests/interface-stability/ghc-experimental-exports.stdout
- testsuite/tests/interface-stability/ghc-prim-exports.stdout
- testsuite/tests/linear/should_fail/LinearTHFail.stderr
- testsuite/tests/linters/notes.stdout
- testsuite/tests/partial-sigs/should_fail/T10999.stderr
- testsuite/tests/perf/compiler/hard_hole_fits.stderr
- testsuite/tests/quasiquotation/T3953.stderr
- + testsuite/tests/quotes/QQError.hs
- + testsuite/tests/quotes/QQError.stderr
- testsuite/tests/quotes/T10384.stderr
- testsuite/tests/quotes/TH_localname.stderr
- testsuite/tests/quotes/all.T
- testsuite/tests/rebindable/DoRestrictedM.hs
- + testsuite/tests/rep-poly/T26107.hs
- testsuite/tests/rep-poly/all.T
- + testsuite/tests/rts/T22859.hs
- + testsuite/tests/rts/T22859.stderr
- testsuite/tests/rts/all.T
- + testsuite/tests/th/QQInQuote.hs
- + testsuite/tests/th/QQTopError.hs
- + testsuite/tests/th/QQTopError.stderr
- testsuite/tests/th/T10598_TH.stderr
- testsuite/tests/th/T14681.stderr
- testsuite/tests/th/T15321.stderr
- testsuite/tests/th/T17804.stderr
- testsuite/tests/th/T5508.stderr
- testsuite/tests/th/TH_Lift.stderr
- testsuite/tests/th/all.T
- testsuite/tests/th/overloaded/TH_overloaded_constraints_fail.stderr
- + testsuite/tests/typecheck/should_compile/T25992.hs
- + testsuite/tests/typecheck/should_compile/T25992.stderr
- testsuite/tests/typecheck/should_compile/all.T
- testsuite/tests/typecheck/should_compile/subsumption_sort_hole_fits.stderr
- testsuite/tests/typecheck/should_compile/valid_hole_fits.stderr
- testsuite/tests/typecheck/should_fail/tcfail097.stderr
- utils/check-exact/ExactPrint.hs
- utils/ghc-toolchain/src/GHC/Toolchain/Tools/Link.hs
- utils/haddock/haddock-library/haddock-library.cabal
- utils/haddock/hypsrc-test/ref/src/Quasiquoter.html
- utils/hpc
- utils/hsc2hs
- utils/iserv/iserv.cabal.in
The diff was not included because it is too large.
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/231d1484fac728c959005529f799d3…
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/231d1484fac728c959005529f799d3…
You're receiving this email because of your account on gitlab.haskell.org.
1
0
[Git][ghc/ghc][wip/T25282] Expose ghc-internal unit id through the settings file
by Teo Camarasu (＠teo) 17 Jun '25
by Teo Camarasu (＠teo) 17 Jun '25
17 Jun '25
Teo Camarasu pushed to branch wip/T25282 at Glasgow Haskell Compiler / GHC
Commits:
d56460b8 by Teo Camarasu at 2025-06-17T19:25:37+01:00
Expose ghc-internal unit id through the settings file
This in combination with the unit id of the compiler library allows
cabal to know of the two unit ids that should not be reinstalled (in
specific circumstances) as:
- when using plugins, we want to link against exactly the compiler unit
id
- when using TemplateHaskell we want to link against exactly the package
that contains the TemplateHaskell interfaces, which is `ghc-internal`
See: <https://github.com/haskell/cabal/issues/10087>
Resolves #25282
- - - - -
1 changed file:
- compiler/GHC/Driver/Session.hs
Changes:
=====================================
compiler/GHC/Driver/Session.hs
=====================================
@@ -3450,6 +3450,7 @@ compilerInfo dflags
("Project Patch Level1", cProjectPatchLevel1),
("Project Patch Level2", cProjectPatchLevel2),
("Project Unit Id", cProjectUnitId),
+ ("ghc-internal Unit Id", ghcInternalUnitId), -- See Note [Special unit-ids]
("Booter version", cBooterVersion),
("Stage", cStage),
("Build platform", cBuildPlatformString),
@@ -3500,6 +3501,23 @@ compilerInfo dflags
expandDirectories :: FilePath -> Maybe FilePath -> String -> String
expandDirectories topd mtoold = expandToolDir useInplaceMinGW mtoold . expandTopDir topd
+-- Note [Special unit-ids]
+-- ~~~~~~~~~~~~~~~~~~~~~~~
+-- Certain units are special to the compiler:
+-- - Wired-in identifiers reference a specific unit-id of `ghc-internal`.
+-- - GHC plugins must be linked against a specific unit-id of `ghc`,
+-- namely the same one as the compiler.
+-- - When using Template Haskell, splices refer to the Template Haskell
+-- interface defined in `ghc-internal`, and must be linked against the same
+-- unit-id as the compiler.
+--
+-- We therefore expose the unit-id of `ghc-internal` ("ghc-internal Unit Id") and
+-- ghc ("Project Unit Id") through `ghc --info`.
+--
+-- This allows build tools to act accordingly, eg, if a user wishes to build a
+-- GHC plugin, `cabal-install` might force them to use the exact `ghc` unit
+-- that the compiler was linked against.
+
{- -----------------------------------------------------------------------------
Note [DynFlags consistency]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/d56460b87cf0304f633f53737b369b2…
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/d56460b87cf0304f633f53737b369b2…
You're receiving this email because of your account on gitlab.haskell.org.
1
0