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[Git][ghc/ghc][wip/sjakobi/T2057] Add regression test for #2057
by Simon Jakobi (＠sjakobi2) 09 Mar '26

09 Mar '26

Simon Jakobi pushed to branch wip/sjakobi/T2057 at Glasgow Haskell Compiler / GHC Commits: e894fe64 by Simon Jakobi at 2026-03-09T02:03:45+01:00 Add regression test for #2057 Test that GHC stops after an interface-file error instead of continuing into the linker. The test constructs a stale package dependency on purpose. `pkgB` is compiled against one version of package `A`, then the same unit id is replaced by an incompatible build of `A`. When `Main` imports `B`, GHC has to read `B.hi`, finds an unfolding that still mentions the old `A`, and should fail while loading interfaces. Closes #2057. Assisted-by: Codex - - - - - 12 changed files: - + testsuite/tests/driver/T2057/.gitignore - + testsuite/tests/driver/T2057/Makefile - + testsuite/tests/driver/T2057/README.md - + testsuite/tests/driver/T2057/T2057.stderr - + testsuite/tests/driver/T2057/all.T - + testsuite/tests/driver/T2057/app/Main.hs - + testsuite/tests/driver/T2057/pkgA1.conf.in - + testsuite/tests/driver/T2057/pkgA1/A.hs - + testsuite/tests/driver/T2057/pkgA2.conf.in - + testsuite/tests/driver/T2057/pkgA2/A.hs - + testsuite/tests/driver/T2057/pkgB.conf.in - + testsuite/tests/driver/T2057/pkgB/B.hs Changes: ===================================== testsuite/tests/driver/T2057/.gitignore ===================================== @@ -0,0 +1 @@ +work/ ===================================== testsuite/tests/driver/T2057/Makefile ===================================== @@ -0,0 +1,59 @@ +TOP=../../.. +include $(TOP)/mk/boilerplate.mk +include $(TOP)/mk/test.mk + +WORK = work +PKGDB = $(WORK)/pkgdb +PKGA1 = $(WORK)/pkgA1 +PKGA2 = $(WORK)/pkgA2 +PKGB = $(WORK)/pkgB +APP = $(WORK)/app +OUT = $(WORK)/T2057.out +BASE_ID := $(shell "$(GHC_PKG)" field base id --simple-output) + +.PHONY: T2057 clean + +clean: + rm -rf $(WORK) + +# Dependency graph: +# pkgB is built against pkgA1, where A exports f1. +# We then rebuild the same installed unit id (pkgA) from the pkgA2 sources, +# where A instead exports f2. Reading B.hi therefore finds an unfolding for g +# that still refers to f1, and compiling Main against pkgB should stop at the +# interface error. +T2057: clean + + # Create an isolated package DB and output directories for the repro. + mkdir -p '$(PKGA1)' '$(PKGA2)' '$(PKGB)' '$(APP)' + '$(GHC_PKG)' init '$(PKGDB)' + + # Build and register pkgA1, the original version of A. + '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' \ + -this-unit-id pkgA -O -c pkgA1/A.hs -outputdir '$(PKGA1)' + ar q '$(PKGA1)/libHSpkgA.a' '$(PKGA1)/A.o' >/dev/null 2>&1 + sed "s|@BASE_ID@|$(BASE_ID)|g" pkgA1.conf.in >'$(WORK)/pkgA1.conf' + '$(GHC_PKG)' --package-db '$(PKGDB)' register '$(WORK)/pkgA1.conf' >/dev/null + + # Build and register pkgB against pkgA1 so B.hi records the unfolding of g = f1. + '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' \ + -package pkgA1 -this-unit-id pkgB -O -c pkgB/B.hs \ + -outputdir '$(PKGB)' + ar q '$(PKGB)/libHSpkgB.a' '$(PKGB)/B.o' >/dev/null 2>&1 + sed "s|@BASE_ID@|$(BASE_ID)|g" pkgB.conf.in >'$(WORK)/pkgB.conf' + '$(GHC_PKG)' --package-db '$(PKGDB)' register '$(WORK)/pkgB.conf' >/dev/null + + # Rebuild the same installed unit id from pkgA2, replacing f1 with f2. + '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' \ + -this-unit-id pkgA -O -c pkgA2/A.hs -outputdir '$(PKGA2)' + ar q '$(PKGA2)/libHSpkgA.a' '$(PKGA2)/A.o' >/dev/null 2>&1 + sed "s|@BASE_ID@|$(BASE_ID)|g" pkgA2.conf.in >'$(WORK)/pkgA2.conf' + '$(GHC_PKG)' --package-db '$(PKGDB)' update '$(WORK)/pkgA2.conf' >/dev/null + + # Compiling Main against pkgB should now fail while loading the stale B.hi. + ! '$(TEST_HC)' $(TEST_HC_OPTS) -v0 --make app/Main.hs \ + -O -fforce-recomp -package-db '$(PKGDB)' -package pkgB \ + >'$(OUT)' 2>&1 || { echo "expected compilation failure" >&2; exit 1; } + + # Strip the absolute test directory prefix before comparing against T2057.stderr. + sed "s#$(CURDIR)/##g" '$(OUT)' >&2 ===================================== testsuite/tests/driver/T2057/README.md ===================================== @@ -0,0 +1,8 @@ +`T2057` checks that GHC stops after an interface-file error instead of +continuing into the linker. + +The test constructs a stale package dependency on purpose. `pkgB` is compiled +against one version of package `A`, then the same unit id is replaced by an +incompatible build of `A`. When `Main` imports `B`, GHC has to read `B.hi`, +finds an unfolding that still mentions the old `A`, and should fail while +loading interfaces. ===================================== testsuite/tests/driver/T2057/T2057.stderr ===================================== @@ -0,0 +1,9 @@ +work/pkgB/B.hi +Declaration for g +Unfolding of g: + f1 ErrorWithoutFlag + Can't find interface-file declaration for variable f1 + Probable cause: bug in .hi-boot file, or inconsistent .hi file + Use -ddump-if-trace to get an idea of which file caused the error +<no location info>: + Cannot continue after interface file error ===================================== testsuite/tests/driver/T2057/all.T ===================================== @@ -0,0 +1,11 @@ +test( + 'T2057', + [ extra_files(['pkgA1', 'pkgA2', 'pkgB', 'app', 'README.md', 'pkgA1.conf.in', 'pkgA2.conf.in', 'pkgB.conf.in']) + , when(opsys('mingw32'), skip) + , js_skip + , wasm_skip + , ignore_stdout + ], + makefile_test, + [] +) ===================================== testsuite/tests/driver/T2057/app/Main.hs ===================================== @@ -0,0 +1,6 @@ +module Main where + +import B + +main :: IO () +main = print (g 41) ===================================== testsuite/tests/driver/T2057/pkgA1.conf.in ===================================== @@ -0,0 +1,11 @@ +name: pkgA1 +version: 1.0 +id: pkgA +key: pkgA +exposed: True +exposed-modules: A +import-dirs: ${pkgroot}/pkgA1 +library-dirs: ${pkgroot}/pkgA1 +dynamic-library-dirs: ${pkgroot}/pkgA1 +hs-libraries: HSpkgA +depends: @BASE_ID@ ===================================== testsuite/tests/driver/T2057/pkgA1/A.hs ===================================== @@ -0,0 +1,5 @@ +module A (f1) where + +{-# INLINE f1 #-} +f1 :: Int -> Int +f1 x = x + 1 ===================================== testsuite/tests/driver/T2057/pkgA2.conf.in ===================================== @@ -0,0 +1,11 @@ +name: pkgA1 +version: 1.0 +id: pkgA +key: pkgA +exposed: True +exposed-modules: A +import-dirs: ${pkgroot}/pkgA2 +library-dirs: ${pkgroot}/pkgA2 +dynamic-library-dirs: ${pkgroot}/pkgA2 +hs-libraries: HSpkgA +depends: @BASE_ID@ ===================================== testsuite/tests/driver/T2057/pkgA2/A.hs ===================================== @@ -0,0 +1,4 @@ +module A (f2) where + +f2 :: Int -> Int +f2 x = x + 100 ===================================== testsuite/tests/driver/T2057/pkgB.conf.in ===================================== @@ -0,0 +1,11 @@ +name: pkgB +version: 1.0 +id: pkgB +key: pkgB +exposed: True +exposed-modules: B +import-dirs: ${pkgroot}/pkgB +library-dirs: ${pkgroot}/pkgB +dynamic-library-dirs: ${pkgroot}/pkgB +hs-libraries: HSpkgB +depends: pkgA @BASE_ID@ ===================================== testsuite/tests/driver/T2057/pkgB/B.hs ===================================== @@ -0,0 +1,7 @@ +module B (g) where + +import A + +{-# INLINE g #-} +g :: Int -> Int +g x = f1 x View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/e894fe640926df1ae83c757dd4a821f… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/e894fe640926df1ae83c757dd4a821f… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/sjakobi/T2057] Add regression test for #2057
by Simon Jakobi (＠sjakobi2) 09 Mar '26

09 Mar '26

Simon Jakobi pushed to branch wip/sjakobi/T2057 at Glasgow Haskell Compiler / GHC Commits: 40c3c3c3 by Simon Jakobi at 2026-03-09T02:01:42+01:00 Add regression test for #2057 Closes #2057. Assisted-by: Codex - - - - - 12 changed files: - + testsuite/tests/driver/T2057/.gitignore - + testsuite/tests/driver/T2057/Makefile - + testsuite/tests/driver/T2057/README.md - + testsuite/tests/driver/T2057/T2057.stderr - + testsuite/tests/driver/T2057/all.T - + testsuite/tests/driver/T2057/app/Main.hs - + testsuite/tests/driver/T2057/pkgA1.conf.in - + testsuite/tests/driver/T2057/pkgA1/A.hs - + testsuite/tests/driver/T2057/pkgA2.conf.in - + testsuite/tests/driver/T2057/pkgA2/A.hs - + testsuite/tests/driver/T2057/pkgB.conf.in - + testsuite/tests/driver/T2057/pkgB/B.hs Changes: ===================================== testsuite/tests/driver/T2057/.gitignore ===================================== @@ -0,0 +1 @@ +work/ ===================================== testsuite/tests/driver/T2057/Makefile ===================================== @@ -0,0 +1,59 @@ +TOP=../../.. +include $(TOP)/mk/boilerplate.mk +include $(TOP)/mk/test.mk + +WORK = work +PKGDB = $(WORK)/pkgdb +PKGA1 = $(WORK)/pkgA1 +PKGA2 = $(WORK)/pkgA2 +PKGB = $(WORK)/pkgB +APP = $(WORK)/app +OUT = $(WORK)/T2057.out +BASE_ID := $(shell "$(GHC_PKG)" field base id --simple-output) + +.PHONY: T2057 clean + +clean: + rm -rf $(WORK) + +# Dependency graph: +# pkgB is built against pkgA1, where A exports f1. +# We then rebuild the same installed unit id (pkgA) from the pkgA2 sources, +# where A instead exports f2. Reading B.hi therefore finds an unfolding for g +# that still refers to f1, and compiling Main against pkgB should stop at the +# interface error. +T2057: clean + + # Create an isolated package DB and output directories for the repro. + mkdir -p '$(PKGA1)' '$(PKGA2)' '$(PKGB)' '$(APP)' + '$(GHC_PKG)' init '$(PKGDB)' + + # Build and register pkgA1, the original version of A. + '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' \ + -this-unit-id pkgA -O -c pkgA1/A.hs -outputdir '$(PKGA1)' + ar q '$(PKGA1)/libHSpkgA.a' '$(PKGA1)/A.o' >/dev/null 2>&1 + sed "s|@BASE_ID@|$(BASE_ID)|g" pkgA1.conf.in >'$(WORK)/pkgA1.conf' + '$(GHC_PKG)' --package-db '$(PKGDB)' register '$(WORK)/pkgA1.conf' >/dev/null + + # Build and register pkgB against pkgA1 so B.hi records the unfolding of g = f1. + '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' \ + -package pkgA1 -this-unit-id pkgB -O -c pkgB/B.hs \ + -outputdir '$(PKGB)' + ar q '$(PKGB)/libHSpkgB.a' '$(PKGB)/B.o' >/dev/null 2>&1 + sed "s|@BASE_ID@|$(BASE_ID)|g" pkgB.conf.in >'$(WORK)/pkgB.conf' + '$(GHC_PKG)' --package-db '$(PKGDB)' register '$(WORK)/pkgB.conf' >/dev/null + + # Rebuild the same installed unit id from pkgA2, replacing f1 with f2. + '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' \ + -this-unit-id pkgA -O -c pkgA2/A.hs -outputdir '$(PKGA2)' + ar q '$(PKGA2)/libHSpkgA.a' '$(PKGA2)/A.o' >/dev/null 2>&1 + sed "s|@BASE_ID@|$(BASE_ID)|g" pkgA2.conf.in >'$(WORK)/pkgA2.conf' + '$(GHC_PKG)' --package-db '$(PKGDB)' update '$(WORK)/pkgA2.conf' >/dev/null + + # Compiling Main against pkgB should now fail while loading the stale B.hi. + ! '$(TEST_HC)' $(TEST_HC_OPTS) -v0 --make app/Main.hs \ + -O -fforce-recomp -package-db '$(PKGDB)' -package pkgB \ + >'$(OUT)' 2>&1 || { echo "expected compilation failure" >&2; exit 1; } + + # Strip the absolute test directory prefix before comparing against T2057.stderr. + sed "s#$(CURDIR)/##g" '$(OUT)' >&2 ===================================== testsuite/tests/driver/T2057/README.md ===================================== @@ -0,0 +1,8 @@ +`T2057` checks that GHC stops after an interface-file error instead of +continuing into the linker. + +The test constructs a stale package dependency on purpose. `pkgB` is compiled +against one version of package `A`, then the same unit id is replaced by an +incompatible build of `A`. When `Main` imports `B`, GHC has to read `B.hi`, +finds an unfolding that still mentions the old `A`, and should fail while +loading interfaces. ===================================== testsuite/tests/driver/T2057/T2057.stderr ===================================== @@ -0,0 +1,9 @@ +work/pkgB/B.hi +Declaration for g +Unfolding of g: + f1 ErrorWithoutFlag + Can't find interface-file declaration for variable f1 + Probable cause: bug in .hi-boot file, or inconsistent .hi file + Use -ddump-if-trace to get an idea of which file caused the error +<no location info>: + Cannot continue after interface file error ===================================== testsuite/tests/driver/T2057/all.T ===================================== @@ -0,0 +1,11 @@ +test( + 'T2057', + [ extra_files(['pkgA1', 'pkgA2', 'pkgB', 'app', 'README.md', 'pkgA1.conf.in', 'pkgA2.conf.in', 'pkgB.conf.in']) + , when(opsys('mingw32'), skip) + , js_skip + , wasm_skip + , ignore_stdout + ], + makefile_test, + [] +) ===================================== testsuite/tests/driver/T2057/app/Main.hs ===================================== @@ -0,0 +1,6 @@ +module Main where + +import B + +main :: IO () +main = print (g 41) ===================================== testsuite/tests/driver/T2057/pkgA1.conf.in ===================================== @@ -0,0 +1,11 @@ +name: pkgA1 +version: 1.0 +id: pkgA +key: pkgA +exposed: True +exposed-modules: A +import-dirs: ${pkgroot}/pkgA1 +library-dirs: ${pkgroot}/pkgA1 +dynamic-library-dirs: ${pkgroot}/pkgA1 +hs-libraries: HSpkgA +depends: @BASE_ID@ ===================================== testsuite/tests/driver/T2057/pkgA1/A.hs ===================================== @@ -0,0 +1,5 @@ +module A (f1) where + +{-# INLINE f1 #-} +f1 :: Int -> Int +f1 x = x + 1 ===================================== testsuite/tests/driver/T2057/pkgA2.conf.in ===================================== @@ -0,0 +1,11 @@ +name: pkgA1 +version: 1.0 +id: pkgA +key: pkgA +exposed: True +exposed-modules: A +import-dirs: ${pkgroot}/pkgA2 +library-dirs: ${pkgroot}/pkgA2 +dynamic-library-dirs: ${pkgroot}/pkgA2 +hs-libraries: HSpkgA +depends: @BASE_ID@ ===================================== testsuite/tests/driver/T2057/pkgA2/A.hs ===================================== @@ -0,0 +1,4 @@ +module A (f2) where + +f2 :: Int -> Int +f2 x = x + 100 ===================================== testsuite/tests/driver/T2057/pkgB.conf.in ===================================== @@ -0,0 +1,11 @@ +name: pkgB +version: 1.0 +id: pkgB +key: pkgB +exposed: True +exposed-modules: B +import-dirs: ${pkgroot}/pkgB +library-dirs: ${pkgroot}/pkgB +dynamic-library-dirs: ${pkgroot}/pkgB +hs-libraries: HSpkgB +depends: pkgA @BASE_ID@ ===================================== testsuite/tests/driver/T2057/pkgB/B.hs ===================================== @@ -0,0 +1,7 @@ +module B (g) where + +import A + +{-# INLINE g #-} +g :: Int -> Int +g x = f1 x View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/40c3c3c3f69fd83c87a9a0a5bde3a18… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/40c3c3c3f69fd83c87a9a0a5bde3a18… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/sjakobi/T2057] 2 commits: Shorten README
by Simon Jakobi (＠sjakobi2) 09 Mar '26

09 Mar '26

Simon Jakobi pushed to branch wip/sjakobi/T2057 at Glasgow Haskell Compiler / GHC Commits: a2a79272 by Simon Jakobi at 2026-03-09T01:48:39+01:00 Shorten README - - - - - 359dd071 by Simon Jakobi at 2026-03-09T01:51:06+01:00 Wibbles - - - - - 2 changed files: - testsuite/tests/driver/T2057/Makefile - testsuite/tests/driver/T2057/README.md Changes: ===================================== testsuite/tests/driver/T2057/Makefile ===================================== @@ -19,29 +19,41 @@ clean: # Dependency graph: # pkgB is built against pkgA1, where A exports f1. # We then rebuild the same installed unit id (pkgA-1) from the pkgA2 sources, -# where A instead exports f2. -# Reading B.hi therefore finds an unfolding for g that still refers to f1, -# and compiling Main against pkgB should stop at the interface error. +# where A instead exports f2. Reading B.hi therefore finds an unfolding for g +# that still refers to f1, and compiling Main against pkgB should stop at the +# interface error. T2057: clean + # Create an isolated package DB and output directories for the repro. mkdir -p '$(PKGA1)' '$(PKGA2)' '$(PKGB)' '$(APP)' '$(GHC_PKG)' init '$(PKGDB)' + # Build and register pkgA1, the original version of A. - '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' -this-unit-id pkgA-1 -O -c pkgA1/A.hs -outputdir '$(PKGA1)' + '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' \ + -this-unit-id pkgA-1 -O -c pkgA1/A.hs -outputdir '$(PKGA1)' ar q '$(PKGA1)/libHSpkgA-1.a' '$(PKGA1)/A.o' >/dev/null 2>&1 sed "s|@BASE_ID@|$(BASE_ID)|g" pkgA1.conf.in >'$(WORK)/pkgA1.conf' '$(GHC_PKG)' --package-db '$(PKGDB)' register '$(WORK)/pkgA1.conf' >/dev/null + # Build and register pkgB against pkgA1 so B.hi records the unfolding of g = f1. - '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' -package pkgA1 -this-unit-id pkgB-1 -O -c pkgB/B.hs -outputdir '$(PKGB)' + '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' \ + -package pkgA1 -this-unit-id pkgB-1 -O -c pkgB/B.hs \ + -outputdir '$(PKGB)' ar q '$(PKGB)/libHSpkgB-1.a' '$(PKGB)/B.o' >/dev/null 2>&1 sed "s|@BASE_ID@|$(BASE_ID)|g" pkgB.conf.in >'$(WORK)/pkgB.conf' '$(GHC_PKG)' --package-db '$(PKGDB)' register '$(WORK)/pkgB.conf' >/dev/null + # Rebuild the same installed unit id from pkgA2, replacing f1 with f2. - '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' -this-unit-id pkgA-1 -O -c pkgA2/A.hs -outputdir '$(PKGA2)' + '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' \ + -this-unit-id pkgA-1 -O -c pkgA2/A.hs -outputdir '$(PKGA2)' ar q '$(PKGA2)/libHSpkgA-1.a' '$(PKGA2)/A.o' >/dev/null 2>&1 sed "s|@BASE_ID@|$(BASE_ID)|g" pkgA2.conf.in >'$(WORK)/pkgA2.conf' '$(GHC_PKG)' --package-db '$(PKGDB)' update '$(WORK)/pkgA2.conf' >/dev/null + # Compiling Main against pkgB should now fail while loading the stale B.hi. - ! '$(TEST_HC)' $(TEST_HC_OPTS) -v0 --make app/Main.hs -O -fforce-recomp -package-db '$(PKGDB)' -package pkgB >'$(OUT)' 2>&1 || { echo "expected compilation failure" >&2; exit 1; } + ! '$(TEST_HC)' $(TEST_HC_OPTS) -v0 --make app/Main.hs \ + -O -fforce-recomp -package-db '$(PKGDB)' -package pkgB \ + >'$(OUT)' 2>&1 || { echo "expected compilation failure" >&2; exit 1; } + # Strip the absolute test directory prefix before comparing against T2057.stderr. sed "s#$(CURDIR)/##g" '$(OUT)' >&2 ===================================== testsuite/tests/driver/T2057/README.md ===================================== @@ -6,8 +6,3 @@ against one version of package `A`, then the same unit id is replaced by an incompatible build of `A`. When `Main` imports `B`, GHC has to read `B.hi`, finds an unfolding that still mentions the old `A`, and should fail while loading interfaces. - -The golden [`T2057.stderr`](T2057.stderr) captures the expected behaviour on a -fixed compiler: report the missing declaration from the stale interface and -then abort with `Cannot continue after interface file error`. Any linker output -would be a regression. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/89ed54d65e87dda1c86b0165988115… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/89ed54d65e87dda1c86b0165988115… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/sjakobi/T2057] 5 commits: testsuite: simplify T2057 Makefile recipe
by Simon Jakobi (＠sjakobi2) 09 Mar '26

09 Mar '26

Simon Jakobi pushed to branch wip/sjakobi/T2057 at Glasgow Haskell Compiler / GHC Commits: 500dde14 by Simon Jakobi at 2026-03-09T01:18:11+01:00 testsuite: simplify T2057 Makefile recipe - - - - - 2dea8545 by Simon Jakobi at 2026-03-09T01:22:05+01:00 testsuite: document T2057 Makefile steps Assisted-by: Codex - - - - - f6f4894e by Simon Jakobi at 2026-03-09T01:32:25+01:00 testsuite: rename T2057 pkgA unit id - - - - - 4f3ec643 by Simon Jakobi at 2026-03-09T01:33:36+01:00 testsuite: simplify T2057 binding names - - - - - 89ed54d6 by Simon Jakobi at 2026-03-09T01:41:47+01:00 testsuite: document T2057 test setup - - - - - 11 changed files: - testsuite/tests/driver/T2057/Makefile - + testsuite/tests/driver/T2057/README.md - testsuite/tests/driver/T2057/T2057.stderr - testsuite/tests/driver/T2057/all.T - testsuite/tests/driver/T2057/app/Main.hs - testsuite/tests/driver/T2057/pkgA1.conf.in - testsuite/tests/driver/T2057/pkgA1/A.hs - testsuite/tests/driver/T2057/pkgA2.conf.in - testsuite/tests/driver/T2057/pkgA2/A.hs - testsuite/tests/driver/T2057/pkgB.conf.in - testsuite/tests/driver/T2057/pkgB/B.hs Changes: ===================================== testsuite/tests/driver/T2057/Makefile ===================================== @@ -9,6 +9,7 @@ PKGA2 = $(WORK)/pkgA2 PKGB = $(WORK)/pkgB APP = $(WORK)/app OUT = $(WORK)/T2057.out +BASE_ID := $(shell "$(GHC_PKG)" field base id --simple-output) .PHONY: T2057 clean @@ -16,31 +17,31 @@ clean: rm -rf $(WORK) # Dependency graph: -# pkgB is built against pkgA1. -# We then rebuild the same installed unit id (pkgA1-1) from the pkgA2 sources, -# leaving pkgB with a stale unfolding that still references pkgA1's old API. -# Compiling Main against pkgB should therefore stop at the interface error. +# pkgB is built against pkgA1, where A exports f1. +# We then rebuild the same installed unit id (pkgA-1) from the pkgA2 sources, +# where A instead exports f2. +# Reading B.hi therefore finds an unfolding for g that still refers to f1, +# and compiling Main against pkgB should stop at the interface error. T2057: clean - @set -eu; \ - BASE_ID=`'$(GHC_PKG)' field base id --simple-output`; \ - mkdir -p '$(PKGA1)' '$(PKGA2)' '$(PKGB)' '$(APP)'; \ - '$(GHC_PKG)' init '$(PKGDB)'; \ - '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' -this-unit-id pkgA1-1 -O -c pkgA1/A.hs -outputdir '$(PKGA1)'; \ - ar q '$(PKGA1)/libHSpkgA1-1.a' '$(PKGA1)/A.o' >/dev/null 2>&1; \ - sed "s|@BASE_ID@|$$BASE_ID|g" pkgA1.conf.in >'$(WORK)/pkgA1.conf'; \ - '$(GHC_PKG)' --package-db '$(PKGDB)' register '$(WORK)/pkgA1.conf' >/dev/null; \ - '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' -package pkgA1 -this-unit-id pkgB-1 -O -c pkgB/B.hs -outputdir '$(PKGB)'; \ - ar q '$(PKGB)/libHSpkgB-1.a' '$(PKGB)/B.o' >/dev/null 2>&1; \ - sed "s|@BASE_ID@|$$BASE_ID|g" pkgB.conf.in >'$(WORK)/pkgB.conf'; \ - '$(GHC_PKG)' --package-db '$(PKGDB)' register '$(WORK)/pkgB.conf' >/dev/null; \ - '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' -this-unit-id pkgA1-1 -O -c pkgA2/A.hs -outputdir '$(PKGA2)'; \ - ar q '$(PKGA2)/libHSpkgA1-1.a' '$(PKGA2)/A.o' >/dev/null 2>&1; \ - sed "s|@BASE_ID@|$$BASE_ID|g" pkgA2.conf.in >'$(WORK)/pkgA2.conf'; \ - '$(GHC_PKG)' --package-db '$(PKGDB)' update '$(WORK)/pkgA2.conf' >/dev/null; \ - status=0; \ - '$(TEST_HC)' $(TEST_HC_OPTS) -v0 --make app/Main.hs -O -fforce-recomp -package-db '$(PKGDB)' -package pkgB >'$(OUT)' 2>&1 || status=$$?; \ - if [ $$status -eq 0 ]; then \ - echo "expected compilation failure" >&2; \ - exit 1; \ - fi; \ - sed "s#`pwd`/##g" '$(OUT)' >&2 + # Create an isolated package DB and output directories for the repro. + mkdir -p '$(PKGA1)' '$(PKGA2)' '$(PKGB)' '$(APP)' + '$(GHC_PKG)' init '$(PKGDB)' + # Build and register pkgA1, the original version of A. + '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' -this-unit-id pkgA-1 -O -c pkgA1/A.hs -outputdir '$(PKGA1)' + ar q '$(PKGA1)/libHSpkgA-1.a' '$(PKGA1)/A.o' >/dev/null 2>&1 + sed "s|@BASE_ID@|$(BASE_ID)|g" pkgA1.conf.in >'$(WORK)/pkgA1.conf' + '$(GHC_PKG)' --package-db '$(PKGDB)' register '$(WORK)/pkgA1.conf' >/dev/null + # Build and register pkgB against pkgA1 so B.hi records the unfolding of g = f1. + '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' -package pkgA1 -this-unit-id pkgB-1 -O -c pkgB/B.hs -outputdir '$(PKGB)' + ar q '$(PKGB)/libHSpkgB-1.a' '$(PKGB)/B.o' >/dev/null 2>&1 + sed "s|@BASE_ID@|$(BASE_ID)|g" pkgB.conf.in >'$(WORK)/pkgB.conf' + '$(GHC_PKG)' --package-db '$(PKGDB)' register '$(WORK)/pkgB.conf' >/dev/null + # Rebuild the same installed unit id from pkgA2, replacing f1 with f2. + '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' -this-unit-id pkgA-1 -O -c pkgA2/A.hs -outputdir '$(PKGA2)' + ar q '$(PKGA2)/libHSpkgA-1.a' '$(PKGA2)/A.o' >/dev/null 2>&1 + sed "s|@BASE_ID@|$(BASE_ID)|g" pkgA2.conf.in >'$(WORK)/pkgA2.conf' + '$(GHC_PKG)' --package-db '$(PKGDB)' update '$(WORK)/pkgA2.conf' >/dev/null + # Compiling Main against pkgB should now fail while loading the stale B.hi. + ! '$(TEST_HC)' $(TEST_HC_OPTS) -v0 --make app/Main.hs -O -fforce-recomp -package-db '$(PKGDB)' -package pkgB >'$(OUT)' 2>&1 || { echo "expected compilation failure" >&2; exit 1; } + # Strip the absolute test directory prefix before comparing against T2057.stderr. + sed "s#$(CURDIR)/##g" '$(OUT)' >&2 ===================================== testsuite/tests/driver/T2057/README.md ===================================== @@ -0,0 +1,13 @@ +`T2057` checks that GHC stops after an interface-file error instead of +continuing into the linker. + +The test constructs a stale package dependency on purpose. `pkgB` is compiled +against one version of package `A`, then the same unit id is replaced by an +incompatible build of `A`. When `Main` imports `B`, GHC has to read `B.hi`, +finds an unfolding that still mentions the old `A`, and should fail while +loading interfaces. + +The golden [`T2057.stderr`](T2057.stderr) captures the expected behaviour on a +fixed compiler: report the missing declaration from the stale interface and +then abort with `Cannot continue after interface file error`. Any linker output +would be a regression. ===================================== testsuite/tests/driver/T2057/T2057.stderr ===================================== @@ -1,8 +1,8 @@ work/pkgB/B.hi -Declaration for saved -Unfolding of saved: - staleDependencyBinding ErrorWithoutFlag - Can't find interface-file declaration for variable staleDependencyBinding +Declaration for g +Unfolding of g: + f1 ErrorWithoutFlag + Can't find interface-file declaration for variable f1 Probable cause: bug in .hi-boot file, or inconsistent .hi file Use -ddump-if-trace to get an idea of which file caused the error <no location info>: ===================================== testsuite/tests/driver/T2057/all.T ===================================== @@ -1,6 +1,6 @@ test( 'T2057', - [ extra_files(['pkgA1', 'pkgA2', 'pkgB', 'app', 'pkgA1.conf.in', 'pkgA2.conf.in', 'pkgB.conf.in']) + [ extra_files(['pkgA1', 'pkgA2', 'pkgB', 'app', 'README.md', 'pkgA1.conf.in', 'pkgA2.conf.in', 'pkgB.conf.in']) , when(opsys('mingw32'), skip) , js_skip , wasm_skip ===================================== testsuite/tests/driver/T2057/app/Main.hs ===================================== @@ -3,4 +3,4 @@ module Main where import B main :: IO () -main = print (saved 41) +main = print (g 41) ===================================== testsuite/tests/driver/T2057/pkgA1.conf.in ===================================== @@ -1,11 +1,11 @@ name: pkgA1 version: 1.0 -id: pkgA1-1 -key: pkgA1-1 +id: pkgA-1 +key: pkgA-1 exposed: True exposed-modules: A import-dirs: ${pkgroot}/pkgA1 library-dirs: ${pkgroot}/pkgA1 dynamic-library-dirs: ${pkgroot}/pkgA1 -hs-libraries: HSpkgA1-1 +hs-libraries: HSpkgA-1 depends: @BASE_ID@ ===================================== testsuite/tests/driver/T2057/pkgA1/A.hs ===================================== @@ -1,5 +1,5 @@ -module A (staleDependencyBinding) where +module A (f1) where -{-# INLINE staleDependencyBinding #-} -staleDependencyBinding :: Int -> Int -staleDependencyBinding x = x + 1 +{-# INLINE f1 #-} +f1 :: Int -> Int +f1 x = x + 1 ===================================== testsuite/tests/driver/T2057/pkgA2.conf.in ===================================== @@ -1,11 +1,11 @@ name: pkgA1 version: 1.0 -id: pkgA1-1 -key: pkgA1-1 +id: pkgA-1 +key: pkgA-1 exposed: True exposed-modules: A import-dirs: ${pkgroot}/pkgA2 library-dirs: ${pkgroot}/pkgA2 dynamic-library-dirs: ${pkgroot}/pkgA2 -hs-libraries: HSpkgA1-1 +hs-libraries: HSpkgA-1 depends: @BASE_ID@ ===================================== testsuite/tests/driver/T2057/pkgA2/A.hs ===================================== @@ -1,4 +1,4 @@ -module A (replacementBinding) where +module A (f2) where -replacementBinding :: Int -> Int -replacementBinding x = x + 100 +f2 :: Int -> Int +f2 x = x + 100 ===================================== testsuite/tests/driver/T2057/pkgB.conf.in ===================================== @@ -8,4 +8,4 @@ import-dirs: ${pkgroot}/pkgB library-dirs: ${pkgroot}/pkgB dynamic-library-dirs: ${pkgroot}/pkgB hs-libraries: HSpkgB-1 -depends: pkgA1-1 @BASE_ID@ +depends: pkgA-1 @BASE_ID@ ===================================== testsuite/tests/driver/T2057/pkgB/B.hs ===================================== @@ -1,7 +1,7 @@ -module B (saved) where +module B (g) where import A -{-# INLINE saved #-} -saved :: Int -> Int -saved x = staleDependencyBinding x +{-# INLINE g #-} +g :: Int -> Int +g x = f1 x View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/13ab42f498dbac37cb568b0ad63b76… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/13ab42f498dbac37cb568b0ad63b76… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/sjakobi/T2057] 2 commits: testsuite: refactor T2057 test layout
by Simon Jakobi (＠sjakobi2) 09 Mar '26

09 Mar '26

Simon Jakobi pushed to branch wip/sjakobi/T2057 at Glasgow Haskell Compiler / GHC Commits: 3180476f by Simon Jakobi at 2026-03-09T01:02:03+01:00 testsuite: refactor T2057 test layout - - - - - 13ab42f4 by Simon Jakobi at 2026-03-09T01:02:21+01:00 testsuite: drop T2057 generated work files - - - - - 14 changed files: - + testsuite/tests/driver/T2057/.gitignore - testsuite/tests/driver/T2057/Makefile - testsuite/tests/driver/T2057/T2057.stderr - testsuite/tests/driver/T2057/all.T - testsuite/tests/driver/T2057/src/app/Main.hs → testsuite/tests/driver/T2057/app/Main.hs - − testsuite/tests/driver/T2057/basepkg-v1.conf.in - − testsuite/tests/driver/T2057/basepkg-v2.conf.in - − testsuite/tests/driver/T2057/dep.conf.in - + testsuite/tests/driver/T2057/pkgA1.conf.in - testsuite/tests/driver/T2057/src/base-v1/Base.hs → testsuite/tests/driver/T2057/pkgA1/A.hs - + testsuite/tests/driver/T2057/pkgA2.conf.in - testsuite/tests/driver/T2057/src/base-v2/Base.hs → testsuite/tests/driver/T2057/pkgA2/A.hs - + testsuite/tests/driver/T2057/pkgB.conf.in - testsuite/tests/driver/T2057/src/dep/Dep.hs → testsuite/tests/driver/T2057/pkgB/B.hs Changes: ===================================== testsuite/tests/driver/T2057/.gitignore ===================================== @@ -0,0 +1 @@ +work/ ===================================== testsuite/tests/driver/T2057/Makefile ===================================== @@ -4,9 +4,9 @@ include $(TOP)/mk/test.mk WORK = work PKGDB = $(WORK)/pkgdb -BASE_V1 = $(WORK)/basepkg-v1 -BASE_V2 = $(WORK)/basepkg-v2 -DEP = $(WORK)/dep +PKGA1 = $(WORK)/pkgA1 +PKGA2 = $(WORK)/pkgA2 +PKGB = $(WORK)/pkgB APP = $(WORK)/app OUT = $(WORK)/T2057.out @@ -15,29 +15,30 @@ OUT = $(WORK)/T2057.out clean: rm -rf $(WORK) +# Dependency graph: +# pkgB is built against pkgA1. +# We then rebuild the same installed unit id (pkgA1-1) from the pkgA2 sources, +# leaving pkgB with a stale unfolding that still references pkgA1's old API. +# Compiling Main against pkgB should therefore stop at the interface error. T2057: clean @set -eu; \ BASE_ID=`'$(GHC_PKG)' field base id --simple-output`; \ - mkdir -p '$(BASE_V1)' '$(BASE_V2)' '$(DEP)' '$(APP)'; \ + mkdir -p '$(PKGA1)' '$(PKGA2)' '$(PKGB)' '$(APP)'; \ '$(GHC_PKG)' init '$(PKGDB)'; \ - cp src/base-v1/Base.hs '$(BASE_V1)/Base.hs'; \ - cp src/base-v2/Base.hs '$(BASE_V2)/Base.hs'; \ - cp src/dep/Dep.hs '$(DEP)/Dep.hs'; \ - cp src/app/Main.hs '$(APP)/Main.hs'; \ - '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' -this-unit-id basepkg-1 -O -c '$(BASE_V1)/Base.hs' -outputdir '$(BASE_V1)'; \ - ar q '$(BASE_V1)/libHSbasepkg-1.a' '$(BASE_V1)/Base.o' >/dev/null 2>&1; \ - sed "s|@BASE_ID@|$$BASE_ID|g" basepkg-v1.conf.in >'$(WORK)/basepkg-v1.conf'; \ - '$(GHC_PKG)' --package-db '$(PKGDB)' register '$(WORK)/basepkg-v1.conf' >/dev/null; \ - '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' -package basepkg -this-unit-id dep-1 -O -c '$(DEP)/Dep.hs' -outputdir '$(DEP)'; \ - ar q '$(DEP)/libHSdep-1.a' '$(DEP)/Dep.o' >/dev/null 2>&1; \ - sed "s|@BASE_ID@|$$BASE_ID|g" dep.conf.in >'$(WORK)/dep.conf'; \ - '$(GHC_PKG)' --package-db '$(PKGDB)' register '$(WORK)/dep.conf' >/dev/null; \ - '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' -this-unit-id basepkg-1 -O -c '$(BASE_V2)/Base.hs' -outputdir '$(BASE_V2)'; \ - ar q '$(BASE_V2)/libHSbasepkg-1.a' '$(BASE_V2)/Base.o' >/dev/null 2>&1; \ - sed "s|@BASE_ID@|$$BASE_ID|g" basepkg-v2.conf.in >'$(WORK)/basepkg-v2.conf'; \ - '$(GHC_PKG)' --package-db '$(PKGDB)' update '$(WORK)/basepkg-v2.conf' >/dev/null; \ + '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' -this-unit-id pkgA1-1 -O -c pkgA1/A.hs -outputdir '$(PKGA1)'; \ + ar q '$(PKGA1)/libHSpkgA1-1.a' '$(PKGA1)/A.o' >/dev/null 2>&1; \ + sed "s|@BASE_ID@|$$BASE_ID|g" pkgA1.conf.in >'$(WORK)/pkgA1.conf'; \ + '$(GHC_PKG)' --package-db '$(PKGDB)' register '$(WORK)/pkgA1.conf' >/dev/null; \ + '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' -package pkgA1 -this-unit-id pkgB-1 -O -c pkgB/B.hs -outputdir '$(PKGB)'; \ + ar q '$(PKGB)/libHSpkgB-1.a' '$(PKGB)/B.o' >/dev/null 2>&1; \ + sed "s|@BASE_ID@|$$BASE_ID|g" pkgB.conf.in >'$(WORK)/pkgB.conf'; \ + '$(GHC_PKG)' --package-db '$(PKGDB)' register '$(WORK)/pkgB.conf' >/dev/null; \ + '$(TEST_HC)' $(TEST_HC_OPTS) -v0 -package-db '$(PKGDB)' -this-unit-id pkgA1-1 -O -c pkgA2/A.hs -outputdir '$(PKGA2)'; \ + ar q '$(PKGA2)/libHSpkgA1-1.a' '$(PKGA2)/A.o' >/dev/null 2>&1; \ + sed "s|@BASE_ID@|$$BASE_ID|g" pkgA2.conf.in >'$(WORK)/pkgA2.conf'; \ + '$(GHC_PKG)' --package-db '$(PKGDB)' update '$(WORK)/pkgA2.conf' >/dev/null; \ status=0; \ - '$(TEST_HC)' $(TEST_HC_OPTS) -v0 --make '$(APP)/Main.hs' -O -fforce-recomp -package-db '$(PKGDB)' -package dep >'$(OUT)' 2>&1 || status=$$?; \ + '$(TEST_HC)' $(TEST_HC_OPTS) -v0 --make app/Main.hs -O -fforce-recomp -package-db '$(PKGDB)' -package pkgB >'$(OUT)' 2>&1 || status=$$?; \ if [ $$status -eq 0 ]; then \ echo "expected compilation failure" >&2; \ exit 1; \ ===================================== testsuite/tests/driver/T2057/T2057.stderr ===================================== @@ -1,4 +1,4 @@ -work/dep/Dep.hi +work/pkgB/B.hi Declaration for saved Unfolding of saved: staleDependencyBinding ErrorWithoutFlag ===================================== testsuite/tests/driver/T2057/all.T ===================================== @@ -1,6 +1,6 @@ test( 'T2057', - [ extra_files(['src', 'basepkg-v1.conf.in', 'basepkg-v2.conf.in', 'dep.conf.in']) + [ extra_files(['pkgA1', 'pkgA2', 'pkgB', 'app', 'pkgA1.conf.in', 'pkgA2.conf.in', 'pkgB.conf.in']) , when(opsys('mingw32'), skip) , js_skip , wasm_skip ===================================== testsuite/tests/driver/T2057/src/app/Main.hs → testsuite/tests/driver/T2057/app/Main.hs ===================================== @@ -1,6 +1,6 @@ module Main where -import Dep +import B main :: IO () main = print (saved 41) ===================================== testsuite/tests/driver/T2057/basepkg-v1.conf.in deleted ===================================== @@ -1,11 +0,0 @@ -name: basepkg -version: 1.0 -id: basepkg-1 -key: basepkg-1 -exposed: True -exposed-modules: Base -import-dirs: ${pkgroot}/basepkg-v1 -library-dirs: ${pkgroot}/basepkg-v1 -dynamic-library-dirs: ${pkgroot}/basepkg-v1 -hs-libraries: HSbasepkg-1 -depends: @BASE_ID@ ===================================== testsuite/tests/driver/T2057/basepkg-v2.conf.in deleted ===================================== @@ -1,11 +0,0 @@ -name: basepkg -version: 1.0 -id: basepkg-1 -key: basepkg-1 -exposed: True -exposed-modules: Base -import-dirs: ${pkgroot}/basepkg-v2 -library-dirs: ${pkgroot}/basepkg-v2 -dynamic-library-dirs: ${pkgroot}/basepkg-v2 -hs-libraries: HSbasepkg-1 -depends: @BASE_ID@ ===================================== testsuite/tests/driver/T2057/dep.conf.in deleted ===================================== @@ -1,11 +0,0 @@ -name: dep -version: 1.0 -id: dep-1 -key: dep-1 -exposed: True -exposed-modules: Dep -import-dirs: ${pkgroot}/dep -library-dirs: ${pkgroot}/dep -dynamic-library-dirs: ${pkgroot}/dep -hs-libraries: HSdep-1 -depends: basepkg-1 @BASE_ID@ ===================================== testsuite/tests/driver/T2057/pkgA1.conf.in ===================================== @@ -0,0 +1,11 @@ +name: pkgA1 +version: 1.0 +id: pkgA1-1 +key: pkgA1-1 +exposed: True +exposed-modules: A +import-dirs: ${pkgroot}/pkgA1 +library-dirs: ${pkgroot}/pkgA1 +dynamic-library-dirs: ${pkgroot}/pkgA1 +hs-libraries: HSpkgA1-1 +depends: @BASE_ID@ ===================================== testsuite/tests/driver/T2057/src/base-v1/Base.hs → testsuite/tests/driver/T2057/pkgA1/A.hs ===================================== @@ -1,4 +1,4 @@ -module Base (staleDependencyBinding) where +module A (staleDependencyBinding) where {-# INLINE staleDependencyBinding #-} staleDependencyBinding :: Int -> Int ===================================== testsuite/tests/driver/T2057/pkgA2.conf.in ===================================== @@ -0,0 +1,11 @@ +name: pkgA1 +version: 1.0 +id: pkgA1-1 +key: pkgA1-1 +exposed: True +exposed-modules: A +import-dirs: ${pkgroot}/pkgA2 +library-dirs: ${pkgroot}/pkgA2 +dynamic-library-dirs: ${pkgroot}/pkgA2 +hs-libraries: HSpkgA1-1 +depends: @BASE_ID@ ===================================== testsuite/tests/driver/T2057/src/base-v2/Base.hs → testsuite/tests/driver/T2057/pkgA2/A.hs ===================================== @@ -1,4 +1,4 @@ -module Base (replacementBinding) where +module A (replacementBinding) where replacementBinding :: Int -> Int replacementBinding x = x + 100 ===================================== testsuite/tests/driver/T2057/pkgB.conf.in ===================================== @@ -0,0 +1,11 @@ +name: pkgB +version: 1.0 +id: pkgB-1 +key: pkgB-1 +exposed: True +exposed-modules: B +import-dirs: ${pkgroot}/pkgB +library-dirs: ${pkgroot}/pkgB +dynamic-library-dirs: ${pkgroot}/pkgB +hs-libraries: HSpkgB-1 +depends: pkgA1-1 @BASE_ID@ ===================================== testsuite/tests/driver/T2057/src/dep/Dep.hs → testsuite/tests/driver/T2057/pkgB/B.hs ===================================== @@ -1,6 +1,6 @@ -module Dep (saved) where +module B (saved) where -import Base +import A {-# INLINE saved #-} saved :: Int -> Int View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/aacab4158c96a461eff6dd80010224… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/aacab4158c96a461eff6dd80010224… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc] Pushed new branch wip/sjakobi/T2057
by Simon Jakobi (＠sjakobi2) 08 Mar '26

08 Mar '26

Simon Jakobi pushed new branch wip/sjakobi/T2057 at Glasgow Haskell Compiler / GHC -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/tree/wip/sjakobi/T2057 You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/marge_bot_batch_merge_job] 7 commits: compiler: add myCapabilityExpr to GHC.Cmm.Utils
by Marge Bot (＠marge-bot) 08 Mar '26

08 Mar '26

Marge Bot pushed to branch wip/marge_bot_batch_merge_job at Glasgow Haskell Compiler / GHC Commits: 176c0d27 by Cheng Shao at 2026-03-08T18:19:31-04:00 compiler: add myCapabilityExpr to GHC.Cmm.Utils This commit adds `myCapabilityExpr` to `GHC.Cmm.Utils` which is computed from `BaseReg`. It's convenient for codegen logic where one needs to pass the current Capability's pointer. - - - - - db303e85 by Cheng Shao at 2026-03-08T18:19:31-04:00 compiler: lower tryPutMVar# into a ccall directly This patch addresses an old TODO of `stg_tryPutMVarzh` by removing it completely and making the compiler lower `tryPutMVar#` into a ccall to `performTryPutMVar` directly, without landing into an intermediate C or Cmm function. `performTryPutMVar` is promoted to a public RTS function with default visibility, and the compiler lowering logic takes into account the C ABI of `performTryPutMVar` and converts from C Bool to primop's `Int#` result properly. - - - - - 52957fe0 by Simon Hengel at 2026-03-08T18:19:33-04:00 Don't use #line in haddocks This confuses the parser. Haddock output is unaffected by this change. (read: this still produces the same documentation) - - - - - 878dcddf by Wolfgang Jeltsch at 2026-03-08T18:19:35-04:00 Remove in-package dependencies on `GHC.Internal.System.IO` This contribution eliminates all dependencies on `GHC.Internal.System.IO` from within `ghc-internal`. It comprises the following changes: * Make `GHC.Internal.Fingerprint` independent of I/O support * Tighten the dependencies of `GHC.Internal.Data.Version` * Tighten the dependencies of `GHC.Internal.TH.Monad` * Tighten the dependencies of `GHCi.Helpers` * Move some code that needs `System.IO` to `template-haskell` * Move the `GHC.ResponseFile` implementation into `base` * Move the `System.Exit` implementation into `base` * Move the `System.IO.OS` implementation into `base` Metric Decrease: size_hello_artifact size_hello_artifact_gzip size_hello_unicode size_hello_unicode_gzip - - - - - 0a1ff530 by Sylvain Henry at 2026-03-08T18:19:44-04:00 T18832: fix Windows CI failure by dropping removeDirectoryRecursive On Windows, open file handles prevent deletion. After killThread, the closer thread may not have called hClose yet, causing removeDirectoryRecursive to fail with "permission denied". The test harness cleans up the run directory anyway, so the call is redundant. - - - - - b52fbf43 by Cheng Shao at 2026-03-08T18:19:45-04:00 compiler: fix redundant import in GHC.StgToJS.Object This patch fixes a redundant import in GHC.StgToJS.Object that causes a build failure when compiling head from 9.14 with validate flavours. Fixes #26991. - - - - - 9c734a7e by Cheng Shao at 2026-03-08T18:19:46-04:00 wasm: fix `Illegal foreign declaration` failure when ghci loads modules with JSFFI exports This patch fixes a wasm ghci error when loading modules with JSFFI exports; the `backendValidityOfCExport` check in `tcCheckFEType` should only makes sense and should be performed when not checking the JavaScript calling convention; otherwise, when the calling convention is JavaScript, the codegen logic should be trusted to backends that actually make use of it. Fixes #26998. - - - - - 29 changed files: - compiler/GHC/Cmm/Utils.hs - compiler/GHC/Iface/Ext/Utils.hs - compiler/GHC/StgToCmm/Prim.hs - compiler/GHC/StgToJS/Object.hs - compiler/GHC/Tc/Gen/Foreign.hs - libraries/base/src/GHC/Fingerprint.hs - libraries/base/src/GHC/ResponseFile.hs - libraries/base/src/System/Exit.hs - libraries/base/src/System/IO/OS.hs - libraries/base/tests/IO/T18832.hs - libraries/ghc-heap/GHC/Exts/Heap/Closures.hs - libraries/ghc-internal/ghc-internal.cabal.in - libraries/ghc-internal/src/GHC/Internal/Data/Version.hs - libraries/ghc-internal/src/GHC/Internal/Fingerprint.hs - libraries/ghc-internal/src/GHC/Internal/GHCi/Helpers.hs - − libraries/ghc-internal/src/GHC/Internal/ResponseFile.hs - − libraries/ghc-internal/src/GHC/Internal/System/Exit.hs - − libraries/ghc-internal/src/GHC/Internal/System/IO/OS.hs - libraries/ghc-internal/src/GHC/Internal/TH/Monad.hs - libraries/template-haskell/Language/Haskell/TH/Syntax.hs - rts/PrimOps.cmm - rts/RtsSymbols.c - rts/Threads.c - rts/Threads.h - rts/include/rts/Threads.h - rts/include/stg/MiscClosures.h - testsuite/tests/ffi/should_compile/all.T - + testsuite/tests/ghci-wasm/T26998.hs - testsuite/tests/ghci-wasm/all.T Changes: ===================================== compiler/GHC/Cmm/Utils.hs ===================================== @@ -37,6 +37,7 @@ module GHC.Cmm.Utils( baseExpr, spExpr, hpExpr, spLimExpr, hpLimExpr, currentTSOExpr, currentNurseryExpr, cccsExpr, + myCapabilityExpr, -- Tagging cmmTagMask, cmmPointerMask, cmmUntag, cmmIsTagged, cmmIsNotTagged, @@ -569,7 +570,7 @@ blockTicks b = reverse $ foldBlockNodesF goStmt b [] -- Access to common global registers baseExpr, spExpr, hpExpr, currentTSOExpr, currentNurseryExpr, - spLimExpr, hpLimExpr, cccsExpr :: Platform -> CmmExpr + spLimExpr, hpLimExpr, cccsExpr, myCapabilityExpr :: Platform -> CmmExpr baseExpr p = CmmReg $ baseReg p spExpr p = CmmReg $ spReg p spLimExpr p = CmmReg $ spLimReg p @@ -578,3 +579,5 @@ hpLimExpr p = CmmReg $ hpLimReg p currentTSOExpr p = CmmReg $ currentTSOReg p currentNurseryExpr p = CmmReg $ currentNurseryReg p cccsExpr p = CmmReg $ cccsReg p +myCapabilityExpr p = + cmmRegOff (baseReg p) $ negate $ pc_OFFSET_Capability_r $ platformConstants p ===================================== compiler/GHC/Iface/Ext/Utils.hs ===================================== @@ -461,11 +461,11 @@ in which @foozball@ and @quuuuuux@ have overlapping spans: @ module Baz where -# line 3 "Baz.hs" +# \line 3 "Baz.hs" foozball :: Int foozball = 0 -# line 3 "Baz.hs" +# \line 3 "Baz.hs" bar, quuuuuux :: Int bar = 1 quuuuuux = 2 ===================================== compiler/GHC/StgToCmm/Prim.hs ===================================== @@ -345,6 +345,25 @@ emitPrimOp cfg primop = emitPrimCall [res] (MO_Xchg (wordWidth platform)) [dst, val] emitDirtyMutVar mutv (CmmReg (CmmLocal res)) + TryPutMVarOp -> \[mvar, val] -> inlinePrimop $ \[res] -> do + cres <- newTemp b8 + emitCCall + [(cres, NoHint)] + ( CmmLit + ( CmmLabel + ( mkForeignLabel + (fsLit "performTryPutMVar") + ForeignLabelInExternalPackage + IsFunction + ) + ) + ) + [(myCapabilityExpr platform, AddrHint), (mvar, AddrHint), (val, AddrHint)] + emitAssign (CmmLocal res) $ + CmmMachOp + (MO_UU_Conv W8 (wordWidth platform)) + [CmmReg (CmmLocal cres)] + -- #define sizzeofByteArrayzh(r,a) \ -- r = ((StgArrBytes *)(a))->bytes SizeofByteArrayOp -> \[arg] -> inlinePrimop $ \[res] -> @@ -1777,7 +1796,6 @@ emitPrimOp cfg primop = TakeMVarOp -> alwaysExternal TryTakeMVarOp -> alwaysExternal PutMVarOp -> alwaysExternal - TryPutMVarOp -> alwaysExternal ReadMVarOp -> alwaysExternal TryReadMVarOp -> alwaysExternal IsEmptyMVarOp -> alwaysExternal ===================================== compiler/GHC/StgToJS/Object.hs ===================================== @@ -72,7 +72,6 @@ import Data.List (sortOn) import qualified Data.List as List import Data.Map (Map) import qualified Data.Map as M -import Data.Word import Data.Semigroup import System.IO ===================================== compiler/GHC/Tc/Gen/Foreign.hs ===================================== @@ -449,8 +449,9 @@ tcFExport d = pprPanic "tcFExport" (ppr d) tcCheckFEType :: Type -> ForeignExport GhcRn -> TcM (ForeignExport GhcTc) tcCheckFEType sig_ty edecl@(CExport src (L l (CExportStatic str cconv))) = do - checkCg (Left edecl) backendValidityOfCExport - when (cconv /= JavaScriptCallConv) $ checkTc (isCLabelString str) (TcRnInvalidCIdentifier str) + when (cconv /= JavaScriptCallConv) $ do + checkCg (Left edecl) backendValidityOfCExport + checkTc (isCLabelString str) (TcRnInvalidCIdentifier str) cconv' <- checkCConv (Left edecl) cconv checkForeignArgs isFFIExternalTy arg_tys checkForeignRes nonIOok noCheckSafe isFFIExportResultTy res_ty ===================================== libraries/base/src/GHC/Fingerprint.hs ===================================== @@ -9,3 +9,45 @@ module GHC.Fingerprint ( ) where import GHC.Internal.Fingerprint + +import Data.Function (($)) +import Control.Monad (return, when) +import Data.Bool (not, (&&)) +import Data.List ((++)) +import Data.Maybe (Maybe (Nothing, Just)) +import Data.Int (Int) +import Data.Word (Word8) +import Data.Eq ((/=)) +import Text.Show (show) +import System.IO + ( + IO, + FilePath, + IOMode (ReadMode), + withBinaryFile, + hGetBuf, + hIsEOF + ) +import Foreign.Ptr (Ptr) +import GHC.Err (errorWithoutStackTrace) + +-- | Computes the hash of a given file. +-- This function runs in constant memory. +-- +-- @since base-4.7.0.0 +getFileHash :: FilePath -> IO Fingerprint +getFileHash path = withBinaryFile path ReadMode $ \ hdl -> + let + readChunk :: Ptr Word8 -> Int -> IO (Maybe Int) + readChunk bufferPtr bufferSize = do + chunkSize <- hGetBuf hdl bufferPtr bufferSize + isFinished <- hIsEOF hdl + when (chunkSize /= bufferSize && not isFinished) + ( + errorWithoutStackTrace $ + "GHC.Fingerprint.getFileHash: could only read " ++ + show chunkSize ++ + " bytes, but more are available" + ) + return (if isFinished then Just chunkSize else Nothing) + in fingerprintBufferedStream readChunk ===================================== libraries/base/src/GHC/ResponseFile.hs ===================================== @@ -1,3 +1,4 @@ +{-# LANGUAGE ScopedTypeVariables #-} {-# LANGUAGE Safe #-} -- | @@ -19,4 +20,145 @@ module GHC.ResponseFile ( expandResponse ) where -import GHC.Internal.ResponseFile +import Control.Monad (return, (>>=), mapM) +import Control.Exception (IOException, catch) +import Data.Function (($), (.)) +import Data.Bool (Bool (False, True), otherwise, not, (||)) +import Data.Char (Char, isSpace) +import Data.List ((++), map, filter, concat, reverse) +import Data.String (String, unlines) +import Data.Functor (fmap) +import Data.Foldable (null, foldl') +import Data.Eq ((==)) +import Text.Show (show) +import System.Environment (getArgs) +import System.IO (IO, hPutStrLn, readFile, stderr) +import System.Exit (exitFailure) + +{-| +Like 'getArgs', but can also read arguments supplied via response files. + + +For example, consider a program @foo@: + +@ +main :: IO () +main = do + args <- getArgsWithResponseFiles + putStrLn (show args) +@ + + +And a response file @args.txt@: + +@ +--one 1 +--\'two\' 2 +--"three" 3 +@ + +Then the result of invoking @foo@ with @args.txt@ is: + +> > ./foo @args.txt +> ["--one","1","--two","2","--three","3"] + +-} +getArgsWithResponseFiles :: IO [String] +getArgsWithResponseFiles = getArgs >>= expandResponse + +-- | Given a string of concatenated strings, separate each by removing +-- a layer of /quoting/ and\/or /escaping/ of certain characters. +-- +-- These characters are: any whitespace, single quote, double quote, +-- and the backslash character. The backslash character always +-- escapes (i.e., passes through without further consideration) the +-- character which follows. Characters can also be escaped in blocks +-- by quoting (i.e., surrounding the blocks with matching pairs of +-- either single- or double-quotes which are not themselves escaped). +-- +-- Any whitespace which appears outside of either of the quoting and +-- escaping mechanisms, is interpreted as having been added by this +-- special concatenation process to designate where the boundaries +-- are between the original, un-concatenated list of strings. These +-- added whitespace characters are removed from the output. +-- +-- > unescapeArgs "hello\\ \\\"world\\\"\n" == ["hello \"world\""] +unescapeArgs :: String -> [String] +unescapeArgs = filter (not . null) . unescape + +-- | Given a list of strings, concatenate them into a single string +-- with escaping of certain characters, and the addition of a newline +-- between each string. The escaping is done by adding a single +-- backslash character before any whitespace, single quote, double +-- quote, or backslash character, so this escaping character must be +-- removed. Unescaped whitespace (in this case, newline) is part +-- of this "transport" format to indicate the end of the previous +-- string and the start of a new string. +-- +-- While 'unescapeArgs' allows using quoting (i.e., convenient +-- escaping of many characters) by having matching sets of single- or +-- double-quotes,'escapeArgs' does not use the quoting mechanism, +-- and thus will always escape any whitespace, quotes, and +-- backslashes. +-- +-- > escapeArgs ["hello \"world\""] == "hello\\ \\\"world\\\"\n" +escapeArgs :: [String] -> String +escapeArgs = unlines . map escapeArg + +-- | Arguments which look like @\@foo@ will be replaced with the +-- contents of file @foo@. A gcc-like syntax for response files arguments +-- is expected. This must re-constitute the argument list by doing an +-- inverse of the escaping mechanism done by the calling-program side. +-- +-- We quit if the file is not found or reading somehow fails. +-- (A convenience routine for haddock or possibly other clients) +expandResponse :: [String] -> IO [String] +expandResponse = fmap concat . mapM expand + where + expand :: String -> IO [String] + expand ('@':f) = readFileExc f >>= return . unescapeArgs + expand x = return [x] + + readFileExc f = + readFile f `catch` \(e :: IOException) -> do + hPutStrLn stderr $ "Error while expanding response file: " ++ show e + exitFailure + +data Quoting = NoneQ | SngQ | DblQ + +unescape :: String -> [String] +unescape args = reverse . map reverse $ go args NoneQ False [] [] + where + -- n.b., the order of these cases matters; these are cribbed from gcc + -- case 1: end of input + go [] _q _bs a as = a:as + -- case 2: back-slash escape in progress + go (c:cs) q True a as = go cs q False (c:a) as + -- case 3: no back-slash escape in progress, but got a back-slash + go (c:cs) q False a as + | '\\' == c = go cs q True a as + -- case 4: single-quote escaping in progress + go (c:cs) SngQ False a as + | '\'' == c = go cs NoneQ False a as + | otherwise = go cs SngQ False (c:a) as + -- case 5: double-quote escaping in progress + go (c:cs) DblQ False a as + | '"' == c = go cs NoneQ False a as + | otherwise = go cs DblQ False (c:a) as + -- case 6: no escaping is in progress + go (c:cs) NoneQ False a as + | isSpace c = go cs NoneQ False [] (a:as) + | '\'' == c = go cs SngQ False a as + | '"' == c = go cs DblQ False a as + | otherwise = go cs NoneQ False (c:a) as + +escapeArg :: String -> String +escapeArg = reverse . foldl' escape [] + +escape :: String -> Char -> String +escape cs c + | isSpace c + || '\\' == c + || '\'' == c + || '"' == c = c:'\\':cs -- n.b., our caller must reverse the result + | otherwise = c:cs ===================================== libraries/base/src/System/Exit.hs ===================================== @@ -21,4 +21,67 @@ module System.Exit die ) where -import GHC.Internal.System.Exit \ No newline at end of file +import GHC.IO.Exception + ( + IOErrorType (InvalidArgument), + IOException (IOError), + ExitCode (ExitSuccess, ExitFailure) + ) +import Control.Monad ((>>)) +import Control.Exception (throwIO, ioError) +import Data.Bool (otherwise) +import Data.Maybe (Maybe (Nothing)) +import Data.String (String) +import Data.Eq ((/=)) +import System.IO (IO, hPutStrLn, stderr) + +-- --------------------------------------------------------------------------- +-- exitWith + +-- | Computation 'exitWith' @code@ throws 'ExitCode' @code@. +-- Normally this terminates the program, returning @code@ to the +-- program's caller. +-- +-- On program termination, the standard 'Handle's 'stdout' and +-- 'stderr' are flushed automatically; any other buffered 'Handle's +-- need to be flushed manually, otherwise the buffered data will be +-- discarded. +-- +-- A program that fails in any other way is treated as if it had +-- called 'exitFailure'. +-- A program that terminates successfully without calling 'exitWith' +-- explicitly is treated as if it had called 'exitWith' 'ExitSuccess'. +-- +-- As an 'ExitCode' is an 'Control.Exception.Exception', it can be +-- caught using the functions of "Control.Exception". This means that +-- cleanup computations added with 'GHC.Internal.Control.Exception.bracket' (from +-- "Control.Exception") are also executed properly on 'exitWith'. +-- +-- Note: in GHC, 'exitWith' should be called from the main program +-- thread in order to exit the process. When called from another +-- thread, 'exitWith' will throw an 'ExitCode' as normal, but the +-- exception will not cause the process itself to exit. +-- +exitWith :: ExitCode -> IO a +exitWith ExitSuccess = throwIO ExitSuccess +exitWith code@(ExitFailure n) + | n /= 0 = throwIO code + | otherwise = ioError (IOError Nothing InvalidArgument "exitWith" "ExitFailure 0" Nothing Nothing) + +-- | The computation 'exitFailure' is equivalent to +-- 'exitWith' @(@'ExitFailure' /exitfail/@)@, +-- where /exitfail/ is implementation-dependent. +exitFailure :: IO a +exitFailure = exitWith (ExitFailure 1) + +-- | The computation 'exitSuccess' is equivalent to +-- 'exitWith' 'ExitSuccess', It terminates the program +-- successfully. +exitSuccess :: IO a +exitSuccess = exitWith ExitSuccess + +-- | Write given error message to `stderr` and terminate with `exitFailure`. +-- +-- @since base-4.8.0.0 +die :: String -> IO a +die err = hPutStrLn stderr err >> exitFailure ===================================== libraries/base/src/System/IO/OS.hs ===================================== @@ -1,4 +1,6 @@ {-# LANGUAGE Safe #-} +{-# LANGUAGE CPP #-} +{-# LANGUAGE RankNTypes #-} {-| This module bridges between Haskell handles and underlying operating-system @@ -21,17 +23,293 @@ module System.IO.OS ) where -import GHC.Internal.System.IO.OS +import Control.Monad (return) +import Control.Concurrent.MVar (MVar) +import Control.Exception (mask) +import Data.Function (const, (.), ($)) +import Data.Functor (fmap) +import Data.Maybe (Maybe (Nothing), maybe) +#if defined(mingw32_HOST_OS) +import Data.Bool (otherwise) +import Data.Maybe (Maybe (Just)) +#endif +import Data.List ((++)) +import Data.String (String) +import Data.Typeable (Typeable, cast) +import System.IO (IO) +import GHC.IO.FD (fdFD) +#if defined(mingw32_HOST_OS) +import GHC.IO.Windows.Handle ( - withFileDescriptorReadingBiased, - withFileDescriptorWritingBiased, - withWindowsHandleReadingBiased, - withWindowsHandleWritingBiased, - withFileDescriptorReadingBiasedRaw, - withFileDescriptorWritingBiasedRaw, - withWindowsHandleReadingBiasedRaw, - withWindowsHandleWritingBiasedRaw + NativeHandle, + ConsoleHandle, + IoHandle, + toHANDLE ) +#endif +import GHC.IO.Handle.Types + ( + Handle (FileHandle, DuplexHandle), + Handle__ (Handle__, haDevice) + ) +import GHC.IO.Handle.Internals (withHandle_', flushBuffer) +import GHC.IO.Exception + ( + IOErrorType (InappropriateType), + IOException (IOError), + ioException + ) +import Foreign.Ptr (Ptr) +import Foreign.C.Types (CInt) + +-- * Obtaining POSIX file descriptors and Windows handles + +{-| + Executes a user-provided action on an operating-system handle that underlies + a Haskell handle. Before the user-provided action is run, user-defined + preparation based on the handle state that contains the operating-system + handle is performed. While the user-provided action is executed, further + operations on the Haskell handle are blocked to a degree that interference + with this action is prevented. + + See [below](#with-ref-caveats) for caveats regarding this operation. +-} +withOSHandle :: String + -- ^ The name of the overall operation + -> (Handle -> MVar Handle__) + {-^ + Obtaining of the handle state variable that holds the + operating-system handle + -} + -> (forall d. Typeable d => d -> IO a) + -- ^ Conversion of a device into an operating-system handle + -> (Handle__ -> IO ()) + -- ^ The preparation + -> Handle + -- ^ The Haskell handle to use + -> (a -> IO r) + -- ^ The action to execute on the operating-system handle + -> IO r +withOSHandle opName handleStateVar getOSHandle prepare handle act + = mask $ \ withOriginalMaskingState -> + withHandleState $ \ handleState@Handle__ {haDevice = dev} -> do + osHandle <- getOSHandle dev + prepare handleState + withOriginalMaskingState $ act osHandle + where + + withHandleState = withHandle_' opName handle (handleStateVar handle) +{- + The 'withHandle_'' operation, which we use here, already performs masking. + Still, we have to employ 'mask', in order do obtain the operation that + restores the original masking state. The user-provided action should be + executed with this original masking state, as there is no inherent reason to + generally perform it with masking in place. The masking that 'withHandle_'' + performs is only for safely accessing handle state and thus constitutes an + implementation detail; it has nothing to do with the user-provided action. +-} +{- + The order of actions in 'withOSHandle' is such that any exception from + 'getOSHandle' is thrown before the user-defined preparation is performed. +-} + +{-| + Obtains the handle state variable that underlies a handle or specifically + the handle state variable for reading if the handle uses different state + variables for reading and writing. +-} +handleStateVarReadingBiased :: Handle -> MVar Handle__ +handleStateVarReadingBiased (FileHandle _ var) = var +handleStateVarReadingBiased (DuplexHandle _ readingVar _) = readingVar + +{-| + Obtains the handle state variable that underlies a handle or specifically + the handle state variable for writing if the handle uses different state + variables for reading and writing. +-} +handleStateVarWritingBiased :: Handle -> MVar Handle__ +handleStateVarWritingBiased (FileHandle _ var) = var +handleStateVarWritingBiased (DuplexHandle _ _ writingVar) = writingVar + +{-| + Yields the result of another operation if that operation succeeded, and + otherwise throws an exception that signals that the other operation failed + because some Haskell handle does not use an operating-system handle of a + required type. +-} +requiringOSHandleOfType :: String + -- ^ The name of the operating-system handle type + -> Maybe a + {-^ + The result of the other operation if it succeeded + -} + -> IO a +requiringOSHandleOfType osHandleTypeName + = maybe (ioException osHandleOfTypeRequired) return + where + + osHandleOfTypeRequired :: IOException + osHandleOfTypeRequired + = IOError Nothing + InappropriateType + "" + ("handle does not use " ++ osHandleTypeName ++ "s") + Nothing + Nothing + +{-| + Obtains the POSIX file descriptor of a device if the device contains one, + and throws an exception otherwise. +-} +getFileDescriptor :: Typeable d => d -> IO CInt +getFileDescriptor = requiringOSHandleOfType "POSIX file descriptor" . + fmap fdFD . cast + +{-| + Obtains the Windows handle of a device if the device contains one, and + throws an exception otherwise. +-} +getWindowsHandle :: Typeable d => d -> IO (Ptr ()) +getWindowsHandle = requiringOSHandleOfType "Windows handle" . + toMaybeWindowsHandle + where + + toMaybeWindowsHandle :: Typeable d => d -> Maybe (Ptr ()) +#if defined(mingw32_HOST_OS) + toMaybeWindowsHandle dev + | Just nativeHandle <- cast dev :: Maybe (IoHandle NativeHandle) + = Just (toHANDLE nativeHandle) + | Just consoleHandle <- cast dev :: Maybe (IoHandle ConsoleHandle) + = Just (toHANDLE consoleHandle) + | otherwise + = Nothing + {- + This is inspired by the implementation of + 'System.Win32.Types.withHandleToHANDLENative'. + -} +#else + toMaybeWindowsHandle _ = Nothing +#endif + +{-| + Executes a user-provided action on the POSIX file descriptor that underlies + a handle or specifically on the POSIX file descriptor for reading if the + handle uses different file descriptors for reading and writing. The + Haskell-managed buffers related to the file descriptor are flushed before + the user-provided action is run. While this action is executed, further + operations on the handle are blocked to a degree that interference with this + action is prevented. + + If the handle does not use POSIX file descriptors, an exception is thrown. + + See [below](#with-ref-caveats) for caveats regarding this operation. +-} +withFileDescriptorReadingBiased :: Handle -> (CInt -> IO r) -> IO r +withFileDescriptorReadingBiased = withOSHandle "withFileDescriptorReadingBiased" + handleStateVarReadingBiased + getFileDescriptor + flushBuffer + +{-| + Executes a user-provided action on the POSIX file descriptor that underlies + a handle or specifically on the POSIX file descriptor for writing if the + handle uses different file descriptors for reading and writing. The + Haskell-managed buffers related to the file descriptor are flushed before + the user-provided action is run. While this action is executed, further + operations on the handle are blocked to a degree that interference with this + action is prevented. + + If the handle does not use POSIX file descriptors, an exception is thrown. + + See [below](#with-ref-caveats) for caveats regarding this operation. +-} +withFileDescriptorWritingBiased :: Handle -> (CInt -> IO r) -> IO r +withFileDescriptorWritingBiased = withOSHandle "withFileDescriptorWritingBiased" + handleStateVarWritingBiased + getFileDescriptor + flushBuffer + +{-| + Executes a user-provided action on the Windows handle that underlies a + Haskell handle or specifically on the Windows handle for reading if the + Haskell handle uses different Windows handles for reading and writing. The + Haskell-managed buffers related to the Windows handle are flushed before the + user-provided action is run. While this action is executed, further + operations on the Haskell handle are blocked to a degree that interference + with this action is prevented. + + If the Haskell handle does not use Windows handles, an exception is thrown. + + See [below](#with-ref-caveats) for caveats regarding this operation. +-} +withWindowsHandleReadingBiased :: Handle -> (Ptr () -> IO r) -> IO r +withWindowsHandleReadingBiased = withOSHandle "withWindowsHandleReadingBiased" + handleStateVarReadingBiased + getWindowsHandle + flushBuffer + +{-| + Executes a user-provided action on the Windows handle that underlies a + Haskell handle or specifically on the Windows handle for writing if the + Haskell handle uses different Windows handles for reading and writing. The + Haskell-managed buffers related to the Windows handle are flushed before the + user-provided action is run. While this action is executed, further + operations on the Haskell handle are blocked to a degree that interference + with this action is prevented. + + If the Haskell handle does not use Windows handles, an exception is thrown. + + See [below](#with-ref-caveats) for caveats regarding this operation. +-} +withWindowsHandleWritingBiased :: Handle -> (Ptr () -> IO r) -> IO r +withWindowsHandleWritingBiased = withOSHandle "withWindowsHandleWritingBiased" + handleStateVarWritingBiased + getWindowsHandle + flushBuffer + +{-| + Like 'withFileDescriptorReadingBiased' except that Haskell-managed buffers + are not flushed. +-} +withFileDescriptorReadingBiasedRaw :: Handle -> (CInt -> IO r) -> IO r +withFileDescriptorReadingBiasedRaw + = withOSHandle "withFileDescriptorReadingBiasedRaw" + handleStateVarReadingBiased + getFileDescriptor + (const $ return ()) + +{-| + Like 'withFileDescriptorWritingBiased' except that Haskell-managed buffers + are not flushed. +-} +withFileDescriptorWritingBiasedRaw :: Handle -> (CInt -> IO r) -> IO r +withFileDescriptorWritingBiasedRaw + = withOSHandle "withFileDescriptorWritingBiasedRaw" + handleStateVarWritingBiased + getFileDescriptor + (const $ return ()) + +{-| + Like 'withWindowsHandleReadingBiased' except that Haskell-managed buffers + are not flushed. +-} +withWindowsHandleReadingBiasedRaw :: Handle -> (Ptr () -> IO r) -> IO r +withWindowsHandleReadingBiasedRaw + = withOSHandle "withWindowsHandleReadingBiasedRaw" + handleStateVarReadingBiased + getWindowsHandle + (const $ return ()) + +{-| + Like 'withWindowsHandleWritingBiased' except that Haskell-managed buffers + are not flushed. +-} +withWindowsHandleWritingBiasedRaw :: Handle -> (Ptr () -> IO r) -> IO r +withWindowsHandleWritingBiasedRaw + = withOSHandle "withWindowsHandleWritingBiasedRaw" + handleStateVarWritingBiased + getWindowsHandle + (const $ return ()) -- ** Caveats ===================================== libraries/base/tests/IO/T18832.hs ===================================== @@ -41,7 +41,6 @@ test dir' = do -- cleanup mapM_ killThread [interrupter, deleter, closer] - removeDirectoryRecursive dir either throwIO (const $ putStrLn "No failures observed - success") result ===================================== libraries/ghc-heap/GHC/Exts/Heap/Closures.hs ===================================== @@ -1,17 +1,3 @@ -{-# LANGUAGE CPP #-} -{-# LANGUAGE ForeignFunctionInterface #-} -{-# LANGUAGE GHCForeignImportPrim #-} -{-# LANGUAGE MagicHash #-} -{-# LANGUAGE RecordWildCards #-} -{-# LANGUAGE UnliftedFFITypes #-} -{-# LANGUAGE DeriveGeneric #-} -{-# LANGUAGE DeriveTraversable #-} --- Late cost centres introduce a thunk in the asBox function, which leads to --- an additional wrapper being added to any value placed inside a box. --- This can be removed once our boot compiler is no longer affected by #25212 -{-# OPTIONS_GHC -fno-prof-late #-} -{-# LANGUAGE NamedFieldPuns #-} - module GHC.Exts.Heap.Closures ( -- * Closures Closure ===================================== libraries/ghc-internal/ghc-internal.cabal.in ===================================== @@ -284,7 +284,6 @@ Library GHC.Internal.Read GHC.Internal.Real GHC.Internal.Records - GHC.Internal.ResponseFile GHC.Internal.RTS.Flags GHC.Internal.RTS.Flags.Test GHC.Internal.ST @@ -324,10 +323,8 @@ Library GHC.Internal.Numeric.Natural GHC.Internal.System.Environment GHC.Internal.System.Environment.Blank - GHC.Internal.System.Exit GHC.Internal.System.IO GHC.Internal.System.IO.Error - GHC.Internal.System.IO.OS GHC.Internal.System.Mem GHC.Internal.System.Mem.StableName GHC.Internal.System.Posix.Internals ===================================== libraries/ghc-internal/src/GHC/Internal/Data/Version.hs ===================================== @@ -41,8 +41,7 @@ import GHC.Internal.Data.Eq import GHC.Internal.Int ( Int ) import GHC.Internal.Data.List ( map, sort, concat, concatMap, intersperse, (++) ) import GHC.Internal.Data.Ord -import GHC.Internal.Data.String ( String ) -import GHC.Internal.Base ( Applicative(..), (&&) ) +import GHC.Internal.Base ( Applicative(..), (&&), String ) import GHC.Internal.Generics import GHC.Internal.Unicode ( isDigit, isAlphaNum ) import GHC.Internal.Read ===================================== libraries/ghc-internal/src/GHC/Internal/Fingerprint.hs ===================================== @@ -16,23 +16,22 @@ module GHC.Internal.Fingerprint ( fingerprintData, fingerprintString, fingerprintFingerprints, - getFileHash + fingerprintBufferedStream ) where import GHC.Internal.IO import GHC.Internal.Base import GHC.Internal.Bits import GHC.Internal.Num +import GHC.Internal.Data.Maybe import GHC.Internal.List import GHC.Internal.Real import GHC.Internal.Word -import GHC.Internal.Show import GHC.Internal.Ptr import GHC.Internal.Foreign.C.Types import GHC.Internal.Foreign.Marshal.Alloc import GHC.Internal.Foreign.Marshal.Array import GHC.Internal.Foreign.Storable -import GHC.Internal.System.IO import GHC.Internal.Fingerprint.Type @@ -71,41 +70,27 @@ fingerprintString str = unsafeDupablePerformIO $ fromIntegral (w32 `shiftR` 8), fromIntegral w32] --- | Computes the hash of a given file. --- This function loops over the handle, running in constant memory. --- --- @since base-4.7.0.0 -getFileHash :: FilePath -> IO Fingerprint -getFileHash path = withBinaryFile path ReadMode $ \h -> +-- | Reads data in chunks and computes its hash. +-- This function runs in constant memory. +fingerprintBufferedStream :: (Ptr Word8 -> Int -> IO (Maybe Int)) + -> IO Fingerprint +fingerprintBufferedStream readChunk = allocaBytes SIZEOF_STRUCT_MD5CONTEXT $ \pctxt -> do c_MD5Init pctxt - - processChunks h (\buf size -> c_MD5Update pctxt buf (fromIntegral size)) - + allocaBytes _BUFSIZE $ \arrPtr -> + let loop = do + maybeRemainderSize <- readChunk arrPtr _BUFSIZE + c_MD5Update pctxt + arrPtr + (fromIntegral (fromMaybe _BUFSIZE maybeRemainderSize)) + when (isNothing maybeRemainderSize) loop + in loop allocaBytes 16 $ \pdigest -> do c_MD5Final pdigest pctxt peek (castPtr pdigest :: Ptr Fingerprint) - where _BUFSIZE = 4096 - -- Loop over _BUFSIZE sized chunks read from the handle, - -- passing the callback a block of bytes and its size. - processChunks :: Handle -> (Ptr Word8 -> Int -> IO ()) -> IO () - processChunks h f = allocaBytes _BUFSIZE $ \arrPtr -> - - let loop = do - count <- hGetBuf h arrPtr _BUFSIZE - eof <- hIsEOF h - when (count /= _BUFSIZE && not eof) $ errorWithoutStackTrace $ - "GHC.Internal.Fingerprint.getFileHash: only read " ++ show count ++ " bytes" - - f arrPtr count - - when (not eof) loop - - in loop - data MD5Context foreign import ccall unsafe "__hsbase_MD5Init" ===================================== libraries/ghc-internal/src/GHC/Internal/GHCi/Helpers.hs ===================================== @@ -24,9 +24,10 @@ module GHC.Internal.GHCi.Helpers , evalWrapper ) where -import GHC.Internal.Base -import GHC.Internal.System.IO -import GHC.Internal.System.Environment +import GHC.Internal.Base (String, IO) +import GHC.Internal.IO.Handle (BufferMode (NoBuffering), hSetBuffering, hFlush) +import GHC.Internal.IO.StdHandles (stdin, stdout, stderr) +import GHC.Internal.System.Environment (withProgName, withArgs) disableBuffering :: IO () disableBuffering = do ===================================== libraries/ghc-internal/src/GHC/Internal/ResponseFile.hs deleted ===================================== @@ -1,163 +0,0 @@ -{-# LANGUAGE ScopedTypeVariables #-} -{-# LANGUAGE Trustworthy #-} - ------------------------------------------------------------------------------ --- | --- Module : GHC.Internal.ResponseFile --- License : BSD-style (see the file LICENSE) --- --- Maintainer : libraries(a)haskell.org --- Stability : internal --- Portability : portable --- --- GCC style response files. --- --- @since base-4.12.0.0 ----------------------------------------------------------------------------- - --- Migrated from Haddock. - -module GHC.Internal.ResponseFile ( - getArgsWithResponseFiles, - unescapeArgs, - escapeArgs, escapeArg, - expandResponse - ) where - -import GHC.Internal.Control.Exception -import GHC.Internal.Data.Foldable (Foldable(..)) -import GHC.Internal.Base -import GHC.Internal.Unicode (isSpace) -import GHC.Internal.Data.List (filter, unlines, concat, reverse) -import GHC.Internal.Text.Show (show) -import GHC.Internal.System.Environment (getArgs) -import GHC.Internal.System.Exit (exitFailure) -import GHC.Internal.System.IO - -{-| -Like 'getArgs', but can also read arguments supplied via response files. - - -For example, consider a program @foo@: - -@ -main :: IO () -main = do - args <- getArgsWithResponseFiles - putStrLn (show args) -@ - - -And a response file @args.txt@: - -@ ---one 1 ---\'two\' 2 ---"three" 3 -@ - -Then the result of invoking @foo@ with @args.txt@ is: - -> > ./foo @args.txt -> ["--one","1","--two","2","--three","3"] - --} -getArgsWithResponseFiles :: IO [String] -getArgsWithResponseFiles = getArgs >>= expandResponse - --- | Given a string of concatenated strings, separate each by removing --- a layer of /quoting/ and\/or /escaping/ of certain characters. --- --- These characters are: any whitespace, single quote, double quote, --- and the backslash character. The backslash character always --- escapes (i.e., passes through without further consideration) the --- character which follows. Characters can also be escaped in blocks --- by quoting (i.e., surrounding the blocks with matching pairs of --- either single- or double-quotes which are not themselves escaped). --- --- Any whitespace which appears outside of either of the quoting and --- escaping mechanisms, is interpreted as having been added by this --- special concatenation process to designate where the boundaries --- are between the original, un-concatenated list of strings. These --- added whitespace characters are removed from the output. --- --- > unescapeArgs "hello\\ \\\"world\\\"\n" == ["hello \"world\""] -unescapeArgs :: String -> [String] -unescapeArgs = filter (not . null) . unescape - --- | Given a list of strings, concatenate them into a single string --- with escaping of certain characters, and the addition of a newline --- between each string. The escaping is done by adding a single --- backslash character before any whitespace, single quote, double --- quote, or backslash character, so this escaping character must be --- removed. Unescaped whitespace (in this case, newline) is part --- of this "transport" format to indicate the end of the previous --- string and the start of a new string. --- --- While 'unescapeArgs' allows using quoting (i.e., convenient --- escaping of many characters) by having matching sets of single- or --- double-quotes,'escapeArgs' does not use the quoting mechanism, --- and thus will always escape any whitespace, quotes, and --- backslashes. --- --- > escapeArgs ["hello \"world\""] == "hello\\ \\\"world\\\"\n" -escapeArgs :: [String] -> String -escapeArgs = unlines . map escapeArg - --- | Arguments which look like @\@foo@ will be replaced with the --- contents of file @foo@. A gcc-like syntax for response files arguments --- is expected. This must re-constitute the argument list by doing an --- inverse of the escaping mechanism done by the calling-program side. --- --- We quit if the file is not found or reading somehow fails. --- (A convenience routine for haddock or possibly other clients) -expandResponse :: [String] -> IO [String] -expandResponse = fmap concat . mapM expand - where - expand :: String -> IO [String] - expand ('@':f) = readFileExc f >>= return . unescapeArgs - expand x = return [x] - - readFileExc f = - readFile f `catch` \(e :: IOException) -> do - hPutStrLn stderr $ "Error while expanding response file: " ++ show e - exitFailure - -data Quoting = NoneQ | SngQ | DblQ - -unescape :: String -> [String] -unescape args = reverse . map reverse $ go args NoneQ False [] [] - where - -- n.b., the order of these cases matters; these are cribbed from gcc - -- case 1: end of input - go [] _q _bs a as = a:as - -- case 2: back-slash escape in progress - go (c:cs) q True a as = go cs q False (c:a) as - -- case 3: no back-slash escape in progress, but got a back-slash - go (c:cs) q False a as - | '\\' == c = go cs q True a as - -- case 4: single-quote escaping in progress - go (c:cs) SngQ False a as - | '\'' == c = go cs NoneQ False a as - | otherwise = go cs SngQ False (c:a) as - -- case 5: double-quote escaping in progress - go (c:cs) DblQ False a as - | '"' == c = go cs NoneQ False a as - | otherwise = go cs DblQ False (c:a) as - -- case 6: no escaping is in progress - go (c:cs) NoneQ False a as - | isSpace c = go cs NoneQ False [] (a:as) - | '\'' == c = go cs SngQ False a as - | '"' == c = go cs DblQ False a as - | otherwise = go cs NoneQ False (c:a) as - -escapeArg :: String -> String -escapeArg = reverse . foldl' escape [] - -escape :: String -> Char -> String -escape cs c - | isSpace c - || '\\' == c - || '\'' == c - || '"' == c = c:'\\':cs -- n.b., our caller must reverse the result - | otherwise = c:cs ===================================== libraries/ghc-internal/src/GHC/Internal/System/Exit.hs deleted ===================================== @@ -1,81 +0,0 @@ -{-# LANGUAGE Trustworthy #-} - ------------------------------------------------------------------------------ --- | --- Module : GHC.Internal.System.Exit --- Copyright : (c) The University of Glasgow 2001 --- License : BSD-style (see the file libraries/base/LICENSE) --- --- Maintainer : libraries(a)haskell.org --- Stability : provisional --- Portability : portable --- --- Exiting the program. --- ------------------------------------------------------------------------------ - -module GHC.Internal.System.Exit - ( - ExitCode(ExitSuccess,ExitFailure) - , exitWith - , exitFailure - , exitSuccess - , die - ) where - -import GHC.Internal.System.IO - -import GHC.Internal.Base -import GHC.Internal.IO -import GHC.Internal.IO.Exception - --- --------------------------------------------------------------------------- --- exitWith - --- | Computation 'exitWith' @code@ throws 'ExitCode' @code@. --- Normally this terminates the program, returning @code@ to the --- program's caller. --- --- On program termination, the standard 'Handle's 'stdout' and --- 'stderr' are flushed automatically; any other buffered 'Handle's --- need to be flushed manually, otherwise the buffered data will be --- discarded. --- --- A program that fails in any other way is treated as if it had --- called 'exitFailure'. --- A program that terminates successfully without calling 'exitWith' --- explicitly is treated as if it had called 'exitWith' 'ExitSuccess'. --- --- As an 'ExitCode' is an 'Control.Exception.Exception', it can be --- caught using the functions of "Control.Exception". This means that --- cleanup computations added with 'GHC.Internal.Control.Exception.bracket' (from --- "Control.Exception") are also executed properly on 'exitWith'. --- --- Note: in GHC, 'exitWith' should be called from the main program --- thread in order to exit the process. When called from another --- thread, 'exitWith' will throw an 'ExitCode' as normal, but the --- exception will not cause the process itself to exit. --- -exitWith :: ExitCode -> IO a -exitWith ExitSuccess = throwIO ExitSuccess -exitWith code@(ExitFailure n) - | n /= 0 = throwIO code - | otherwise = ioError (IOError Nothing InvalidArgument "exitWith" "ExitFailure 0" Nothing Nothing) - --- | The computation 'exitFailure' is equivalent to --- 'exitWith' @(@'ExitFailure' /exitfail/@)@, --- where /exitfail/ is implementation-dependent. -exitFailure :: IO a -exitFailure = exitWith (ExitFailure 1) - --- | The computation 'exitSuccess' is equivalent to --- 'exitWith' 'ExitSuccess', It terminates the program --- successfully. -exitSuccess :: IO a -exitSuccess = exitWith ExitSuccess - --- | Write given error message to `stderr` and terminate with `exitFailure`. --- --- @since base-4.8.0.0 -die :: String -> IO a -die err = hPutStrLn stderr err >> exitFailure ===================================== libraries/ghc-internal/src/GHC/Internal/System/IO/OS.hs deleted ===================================== @@ -1,323 +0,0 @@ -{-# LANGUAGE Trustworthy #-} -{-# LANGUAGE CPP #-} -{-# LANGUAGE RankNTypes #-} - -{-| - This module bridges between Haskell handles and underlying operating-system - features. --} -module GHC.Internal.System.IO.OS -( - -- * Obtaining file descriptors and Windows handles - withFileDescriptorReadingBiased, - withFileDescriptorWritingBiased, - withWindowsHandleReadingBiased, - withWindowsHandleWritingBiased, - withFileDescriptorReadingBiasedRaw, - withFileDescriptorWritingBiasedRaw, - withWindowsHandleReadingBiasedRaw, - withWindowsHandleWritingBiasedRaw - - -- ** Caveats - -- $with-ref-caveats -) -where - -#if defined(mingw32_HOST_OS) -import GHC.Internal.Base (otherwise) -#endif -import GHC.Internal.Control.Monad (return) -import GHC.Internal.Control.Concurrent.MVar (MVar) -import GHC.Internal.Control.Exception (mask) -import GHC.Internal.Data.Function (const, (.), ($)) -import GHC.Internal.Data.Functor (fmap) -import GHC.Internal.Data.Maybe (Maybe (Nothing), maybe) -#if defined(mingw32_HOST_OS) -import GHC.Internal.Data.Maybe (Maybe (Just)) -#endif -import GHC.Internal.Data.List ((++)) -import GHC.Internal.Data.String (String) -import GHC.Internal.Data.Typeable (Typeable, cast) -import GHC.Internal.System.IO (IO) -import GHC.Internal.IO.FD (fdFD) -#if defined(mingw32_HOST_OS) -import GHC.Internal.IO.Windows.Handle - ( - NativeHandle, - ConsoleHandle, - IoHandle, - toHANDLE - ) -#endif -import GHC.Internal.IO.Handle.Types - ( - Handle (FileHandle, DuplexHandle), - Handle__ (Handle__, haDevice) - ) -import GHC.Internal.IO.Handle.Internals (withHandle_', flushBuffer) -import GHC.Internal.IO.Exception - ( - IOErrorType (InappropriateType), - IOException (IOError), - ioException - ) -import GHC.Internal.Foreign.Ptr (Ptr) -import GHC.Internal.Foreign.C.Types (CInt) - --- * Obtaining POSIX file descriptors and Windows handles - -{-| - Executes a user-provided action on an operating-system handle that underlies - a Haskell handle. Before the user-provided action is run, user-defined - preparation based on the handle state that contains the operating-system - handle is performed. While the user-provided action is executed, further - operations on the Haskell handle are blocked to a degree that interference - with this action is prevented. - - See [below](#with-ref-caveats) for caveats regarding this operation. --} -withOSHandle :: String - -- ^ The name of the overall operation - -> (Handle -> MVar Handle__) - {-^ - Obtaining of the handle state variable that holds the - operating-system handle - -} - -> (forall d. Typeable d => d -> IO a) - -- ^ Conversion of a device into an operating-system handle - -> (Handle__ -> IO ()) - -- ^ The preparation - -> Handle - -- ^ The Haskell handle to use - -> (a -> IO r) - -- ^ The action to execute on the operating-system handle - -> IO r -withOSHandle opName handleStateVar getOSHandle prepare handle act - = mask $ \ withOriginalMaskingState -> - withHandleState $ \ handleState@Handle__ {haDevice = dev} -> do - osHandle <- getOSHandle dev - prepare handleState - withOriginalMaskingState $ act osHandle - where - - withHandleState = withHandle_' opName handle (handleStateVar handle) -{- - The 'withHandle_'' operation, which we use here, already performs masking. - Still, we have to employ 'mask', in order do obtain the operation that - restores the original masking state. The user-provided action should be - executed with this original masking state, as there is no inherent reason to - generally perform it with masking in place. The masking that 'withHandle_'' - performs is only for safely accessing handle state and thus constitutes an - implementation detail; it has nothing to do with the user-provided action. --} -{- - The order of actions in 'withOSHandle' is such that any exception from - 'getOSHandle' is thrown before the user-defined preparation is performed. --} - -{-| - Obtains the handle state variable that underlies a handle or specifically - the handle state variable for reading if the handle uses different state - variables for reading and writing. --} -handleStateVarReadingBiased :: Handle -> MVar Handle__ -handleStateVarReadingBiased (FileHandle _ var) = var -handleStateVarReadingBiased (DuplexHandle _ readingVar _) = readingVar - -{-| - Obtains the handle state variable that underlies a handle or specifically - the handle state variable for writing if the handle uses different state - variables for reading and writing. --} -handleStateVarWritingBiased :: Handle -> MVar Handle__ -handleStateVarWritingBiased (FileHandle _ var) = var -handleStateVarWritingBiased (DuplexHandle _ _ writingVar) = writingVar - -{-| - Yields the result of another operation if that operation succeeded, and - otherwise throws an exception that signals that the other operation failed - because some Haskell handle does not use an operating-system handle of a - required type. --} -requiringOSHandleOfType :: String - -- ^ The name of the operating-system handle type - -> Maybe a - {-^ - The result of the other operation if it succeeded - -} - -> IO a -requiringOSHandleOfType osHandleTypeName - = maybe (ioException osHandleOfTypeRequired) return - where - - osHandleOfTypeRequired :: IOException - osHandleOfTypeRequired - = IOError Nothing - InappropriateType - "" - ("handle does not use " ++ osHandleTypeName ++ "s") - Nothing - Nothing - -{-| - Obtains the POSIX file descriptor of a device if the device contains one, - and throws an exception otherwise. --} -getFileDescriptor :: Typeable d => d -> IO CInt -getFileDescriptor = requiringOSHandleOfType "POSIX file descriptor" . - fmap fdFD . cast - -{-| - Obtains the Windows handle of a device if the device contains one, and - throws an exception otherwise. --} -getWindowsHandle :: Typeable d => d -> IO (Ptr ()) -getWindowsHandle = requiringOSHandleOfType "Windows handle" . - toMaybeWindowsHandle - where - - toMaybeWindowsHandle :: Typeable d => d -> Maybe (Ptr ()) -#if defined(mingw32_HOST_OS) - toMaybeWindowsHandle dev - | Just nativeHandle <- cast dev :: Maybe (IoHandle NativeHandle) - = Just (toHANDLE nativeHandle) - | Just consoleHandle <- cast dev :: Maybe (IoHandle ConsoleHandle) - = Just (toHANDLE consoleHandle) - | otherwise - = Nothing - {- - This is inspired by the implementation of - 'System.Win32.Types.withHandleToHANDLENative'. - -} -#else - toMaybeWindowsHandle _ = Nothing -#endif - -{-| - Executes a user-provided action on the POSIX file descriptor that underlies - a handle or specifically on the POSIX file descriptor for reading if the - handle uses different file descriptors for reading and writing. The - Haskell-managed buffers related to the file descriptor are flushed before - the user-provided action is run. While this action is executed, further - operations on the handle are blocked to a degree that interference with this - action is prevented. - - If the handle does not use POSIX file descriptors, an exception is thrown. - - See [below](#with-ref-caveats) for caveats regarding this operation. --} -withFileDescriptorReadingBiased :: Handle -> (CInt -> IO r) -> IO r -withFileDescriptorReadingBiased = withOSHandle "withFileDescriptorReadingBiased" - handleStateVarReadingBiased - getFileDescriptor - flushBuffer - -{-| - Executes a user-provided action on the POSIX file descriptor that underlies - a handle or specifically on the POSIX file descriptor for writing if the - handle uses different file descriptors for reading and writing. The - Haskell-managed buffers related to the file descriptor are flushed before - the user-provided action is run. While this action is executed, further - operations on the handle are blocked to a degree that interference with this - action is prevented. - - If the handle does not use POSIX file descriptors, an exception is thrown. - - See [below](#with-ref-caveats) for caveats regarding this operation. --} -withFileDescriptorWritingBiased :: Handle -> (CInt -> IO r) -> IO r -withFileDescriptorWritingBiased = withOSHandle "withFileDescriptorWritingBiased" - handleStateVarWritingBiased - getFileDescriptor - flushBuffer - -{-| - Executes a user-provided action on the Windows handle that underlies a - Haskell handle or specifically on the Windows handle for reading if the - Haskell handle uses different Windows handles for reading and writing. The - Haskell-managed buffers related to the Windows handle are flushed before the - user-provided action is run. While this action is executed, further - operations on the Haskell handle are blocked to a degree that interference - with this action is prevented. - - If the Haskell handle does not use Windows handles, an exception is thrown. - - See [below](#with-ref-caveats) for caveats regarding this operation. --} -withWindowsHandleReadingBiased :: Handle -> (Ptr () -> IO r) -> IO r -withWindowsHandleReadingBiased = withOSHandle "withWindowsHandleReadingBiased" - handleStateVarReadingBiased - getWindowsHandle - flushBuffer - -{-| - Executes a user-provided action on the Windows handle that underlies a - Haskell handle or specifically on the Windows handle for writing if the - Haskell handle uses different Windows handles for reading and writing. The - Haskell-managed buffers related to the Windows handle are flushed before the - user-provided action is run. While this action is executed, further - operations on the Haskell handle are blocked to a degree that interference - with this action is prevented. - - If the Haskell handle does not use Windows handles, an exception is thrown. - - See [below](#with-ref-caveats) for caveats regarding this operation. --} -withWindowsHandleWritingBiased :: Handle -> (Ptr () -> IO r) -> IO r -withWindowsHandleWritingBiased = withOSHandle "withWindowsHandleWritingBiased" - handleStateVarWritingBiased - getWindowsHandle - flushBuffer - -{-| - Like 'withFileDescriptorReadingBiased' except that Haskell-managed buffers - are not flushed. --} -withFileDescriptorReadingBiasedRaw :: Handle -> (CInt -> IO r) -> IO r -withFileDescriptorReadingBiasedRaw - = withOSHandle "withFileDescriptorReadingBiasedRaw" - handleStateVarReadingBiased - getFileDescriptor - (const $ return ()) - -{-| - Like 'withFileDescriptorWritingBiased' except that Haskell-managed buffers - are not flushed. --} -withFileDescriptorWritingBiasedRaw :: Handle -> (CInt -> IO r) -> IO r -withFileDescriptorWritingBiasedRaw - = withOSHandle "withFileDescriptorWritingBiasedRaw" - handleStateVarWritingBiased - getFileDescriptor - (const $ return ()) - -{-| - Like 'withWindowsHandleReadingBiased' except that Haskell-managed buffers - are not flushed. --} -withWindowsHandleReadingBiasedRaw :: Handle -> (Ptr () -> IO r) -> IO r -withWindowsHandleReadingBiasedRaw - = withOSHandle "withWindowsHandleReadingBiasedRaw" - handleStateVarReadingBiased - getWindowsHandle - (const $ return ()) - -{-| - Like 'withWindowsHandleWritingBiased' except that Haskell-managed buffers - are not flushed. --} -withWindowsHandleWritingBiasedRaw :: Handle -> (Ptr () -> IO r) -> IO r -withWindowsHandleWritingBiasedRaw - = withOSHandle "withWindowsHandleWritingBiasedRaw" - handleStateVarWritingBiased - getWindowsHandle - (const $ return ()) - --- ** Caveats - -{-$with-ref-caveats - #with-ref-caveats#This subsection is just a dummy, whose purpose is to serve - as the target of the hyperlinks above. The real documentation of the caveats - is in the /Caveats/ subsection in the @base@ module @System.IO.OS@, which - re-exports the above operations. --} ===================================== libraries/ghc-internal/src/GHC/Internal/TH/Monad.hs ===================================== @@ -26,17 +26,19 @@ module GHC.Internal.TH.Monad import Prelude import Data.Data hiding (Fixity(..)) import Data.IORef -import System.IO.Unsafe ( unsafePerformIO ) +import System.IO.Unsafe (unsafePerformIO) import Control.Monad.IO.Class (MonadIO (..)) -import System.IO ( hPutStrLn, stderr ) +import System.IO (FilePath, hPutStrLn, stderr) import qualified Data.Kind as Kind (Type) -import GHC.Types (TYPE, RuntimeRep(..)) +import GHC.Types (TYPE, RuntimeRep(..)) #else import GHC.Internal.Base hiding (NonEmpty(..),Type, Module, sequence) import GHC.Internal.Data.Data hiding (Fixity(..)) import GHC.Internal.Data.Traversable import GHC.Internal.IORef -import GHC.Internal.System.IO +import GHC.Internal.IO (FilePath) +import GHC.Internal.IO.Handle.Text (hPutStrLn) +import GHC.Internal.IO.StdHandles (stderr) import GHC.Internal.Data.Foldable import GHC.Internal.Data.Typeable import GHC.Internal.Control.Monad.IO.Class @@ -819,38 +821,6 @@ addTempFile suffix = Q (qAddTempFile suffix) addTopDecls :: [Dec] -> Q () addTopDecls ds = Q (qAddTopDecls ds) - --- | Emit a foreign file which will be compiled and linked to the object for --- the current module. Currently only languages that can be compiled with --- the C compiler are supported, and the flags passed as part of -optc will --- be also applied to the C compiler invocation that will compile them. --- --- Note that for non-C languages (for example C++) @extern "C"@ directives --- must be used to get symbols that we can access from Haskell. --- --- To get better errors, it is recommended to use #line pragmas when --- emitting C files, e.g. --- --- > {-# LANGUAGE CPP #-} --- > ... --- > addForeignSource LangC $ unlines --- > [ "#line " ++ show (__LINE__ + 1) ++ " " ++ show __FILE__ --- > , ... --- > ] -addForeignSource :: ForeignSrcLang -> String -> Q () -addForeignSource lang src = do - let suffix = case lang of - LangC -> "c" - LangCxx -> "cpp" - LangObjc -> "m" - LangObjcxx -> "mm" - LangAsm -> "s" - LangJs -> "js" - RawObject -> "a" - path <- addTempFile suffix - runIO $ writeFile path src - addForeignFilePath lang path - -- | Same as 'addForeignSource', but expects to receive a path pointing to the -- foreign file instead of a 'String' of its contents. Consider using this in -- conjunction with 'addTempFile'. ===================================== libraries/template-haskell/Language/Haskell/TH/Syntax.hs ===================================== @@ -209,7 +209,7 @@ import Data.List.NonEmpty (NonEmpty(..)) import GHC.Lexeme ( startsVarSym, startsVarId ) -- This module completely re-exports 'GHC.Boot.TH.Syntax', --- and exports additionally functions that depend on filepath. +-- and exports additionally functions that depend on @filepath@ or @System.IO@. -- | addForeignFile :: ForeignSrcLang -> String -> Q () @@ -218,6 +218,37 @@ addForeignFile = addForeignSource "Use 'Language.Haskell.TH.Syntax.addForeignSource' instead" #-} -- deprecated in 8.6 +-- | Emit a foreign file which will be compiled and linked to the object for +-- the current module. Currently only languages that can be compiled with +-- the C compiler are supported, and the flags passed as part of -optc will +-- be also applied to the C compiler invocation that will compile them. +-- +-- Note that for non-C languages (for example C++) @extern "C"@ directives +-- must be used to get symbols that we can access from Haskell. +-- +-- To get better errors, it is recommended to use #line pragmas when +-- emitting C files, e.g. +-- +-- > {-# LANGUAGE CPP #-} +-- > ... +-- > addForeignSource LangC $ unlines +-- > [ "#line " ++ show (__LINE__ + 1) ++ " " ++ show __FILE__ +-- > , ... +-- > ] +addForeignSource :: ForeignSrcLang -> String -> Q () +addForeignSource lang src = do + let suffix = case lang of + LangC -> "c" + LangCxx -> "cpp" + LangObjc -> "m" + LangObjcxx -> "mm" + LangAsm -> "s" + LangJs -> "js" + RawObject -> "a" + path <- addTempFile suffix + runIO $ writeFile path src + addForeignFilePath lang path + -- | The input is a filepath, which if relative is offset by the package root. makeRelativeToProject :: FilePath -> Q FilePath makeRelativeToProject fp | isRelative fp = do ===================================== rts/PrimOps.cmm ===================================== @@ -1927,95 +1927,6 @@ loop: } -// NOTE: there is another implementation of this function in -// Threads.c:performTryPutMVar(). Keep them in sync! It was -// measurably slower to call the C function from here (70% for a -// tight loop doing tryPutMVar#). -// -// TODO: we could kill the duplication by making tryPutMVar# into an -// inline primop that expands into a C call to performTryPutMVar(). -stg_tryPutMVarzh ( P_ mvar, /* :: MVar a */ - P_ val, /* :: a */ ) -{ - W_ info, tso, q, qinfo; - - LOCK_CLOSURE(mvar, info); - - if (StgMVar_value(mvar) != stg_END_TSO_QUEUE_closure) { -#if defined(THREADED_RTS) - unlockClosure(mvar, info); -#endif - return (0); - } - - q = StgMVar_head(mvar); -loop: - if (q == stg_END_TSO_QUEUE_closure) { - /* No further takes, the MVar is now full. */ - if (info == stg_MVAR_CLEAN_info) { - ccall dirty_MVAR(BaseReg "ptr", mvar "ptr", StgMVar_value(mvar) "ptr"); - } - - StgMVar_value(mvar) = val; - unlockClosure(mvar, stg_MVAR_DIRTY_info); - return (1); - } - - qinfo = GET_INFO_ACQUIRE(q); - - if (qinfo == stg_IND_info || - qinfo == stg_MSG_NULL_info) { - q = %acquire StgInd_indirectee(q); - goto loop; - } - - // There are takeMVar(s) waiting: wake up the first one - - tso = StgMVarTSOQueue_tso(q); - q = StgMVarTSOQueue_link(q); - StgMVar_head(mvar) = q; - if (q == stg_END_TSO_QUEUE_closure) { - StgMVar_tail(mvar) = stg_END_TSO_QUEUE_closure; - } else { - if (info == stg_MVAR_CLEAN_info) { - // Resolve #18919. - ccall dirty_MVAR(BaseReg "ptr", mvar "ptr", - StgMVar_value(mvar) "ptr"); - info = stg_MVAR_DIRTY_info; - } - } - - // save why_blocked here, because waking up the thread destroys - // this information - W_ why_blocked; - why_blocked = TO_W_(StgTSO_why_blocked(tso)); // TODO: Missing barrier - ASSERT(StgTSO_block_info(tso) == mvar); - - // actually perform the takeMVar - W_ stack; - stack = StgTSO_stackobj(tso); - if (IS_STACK_CLEAN(stack)) { - ccall dirty_STACK(MyCapability() "ptr", stack "ptr"); - } - PerformTake(stack, val); - - // indicate that the MVar operation has now completed. - StgTSO__link(tso) = stg_END_TSO_QUEUE_closure; - - ccall tryWakeupThread(MyCapability() "ptr", tso); - - // If it was a readMVar, then we can still do work, - // so loop back. (XXX: This could take a while) - if (why_blocked == BlockedOnMVarRead) - goto loop; - - ASSERT(why_blocked == BlockedOnMVar); - - unlockClosure(mvar, info); - return (1); -} - - stg_readMVarzh ( P_ mvar, /* :: MVar a */ ) { W_ val, info, tso, q; ===================================== rts/RtsSymbols.c ===================================== @@ -678,6 +678,7 @@ extern char **environ; SymI_HasDataProto(stg_readTVarIOzh) \ SymI_HasProto(resumeThread) \ SymI_HasProto(setNumCapabilities) \ + SymI_HasProto(performTryPutMVar) \ SymI_HasProto(getNumberOfProcessors) \ SymI_HasProto(resolveObjs) \ SymI_HasDataProto(stg_retryzh) \ @@ -869,7 +870,6 @@ extern char **environ; SymI_HasDataProto(stg_takeMVarzh) \ SymI_HasDataProto(stg_readMVarzh) \ SymI_HasDataProto(stg_threadStatuszh) \ - SymI_HasDataProto(stg_tryPutMVarzh) \ SymI_HasDataProto(stg_tryTakeMVarzh) \ SymI_HasDataProto(stg_tryReadMVarzh) \ SymI_HasDataProto(stg_unmaskAsyncExceptionszh) \ ===================================== rts/Threads.c ===================================== @@ -795,8 +795,6 @@ threadStackUnderflow (Capability *cap, StgTSO *tso) /* ---------------------------------------------------------------------------- Implementation of tryPutMVar# - - NOTE: this should be kept in sync with stg_tryPutMVarzh in PrimOps.cmm ------------------------------------------------------------------------- */ bool performTryPutMVar(Capability *cap, StgMVar *mvar, StgClosure *value) ===================================== rts/Threads.h ===================================== @@ -24,7 +24,7 @@ void migrateThread (Capability *from, StgTSO *tso, Capability *to); // #if defined(THREADED_RTS) void wakeupThreadOnCapability (Capability *cap, - Capability *other_cap, + Capability *other_cap, StgTSO *tso); #endif @@ -40,8 +40,6 @@ StgBool isThreadBound (StgTSO* tso); void threadStackOverflow (Capability *cap, StgTSO *tso); W_ threadStackUnderflow (Capability *cap, StgTSO *tso); -bool performTryPutMVar(Capability *cap, StgMVar *mvar, StgClosure *value); - #if defined(DEBUG) void printThreadBlockage (StgTSO *tso); void printThreadStatus (StgTSO *t); ===================================== rts/include/rts/Threads.h ===================================== @@ -90,3 +90,5 @@ extern Capability MainCapability; // current value at the moment). // extern void setNumCapabilities (uint32_t new_); + +bool performTryPutMVar(Capability *cap, StgMVar *mvar, StgClosure *value); ===================================== rts/include/stg/MiscClosures.h ===================================== @@ -512,7 +512,6 @@ RTS_FUN_DECL(stg_takeMVarzh); RTS_FUN_DECL(stg_putMVarzh); RTS_FUN_DECL(stg_readMVarzh); RTS_FUN_DECL(stg_tryTakeMVarzh); -RTS_FUN_DECL(stg_tryPutMVarzh); RTS_FUN_DECL(stg_tryReadMVarzh); RTS_FUN_DECL(stg_waitReadzh); ===================================== testsuite/tests/ffi/should_compile/all.T ===================================== @@ -33,6 +33,7 @@ test( compile, [ '-optc=-DC -optcxx=-DCXX -optcxx=-std=c++11' + + ' -package=template-haskell' + (' -optcxx=-stdlib=libc++' if opsys('darwin') else '') ], ) ===================================== testsuite/tests/ghci-wasm/T26998.hs ===================================== @@ -0,0 +1,4 @@ +main :: IO () +main = pure () + +foreign export javascript "my_main" main :: IO () ===================================== testsuite/tests/ghci-wasm/all.T ===================================== @@ -10,3 +10,5 @@ test('T26430', [ extra_hc_opts('-L. -lT26430B')] , compile_and_run, [''] ) + +test('T26998', [], compile_and_run, ['']) View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/a2567c46e7bfe5a746f415f1561826… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/a2567c46e7bfe5a746f415f1561826… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/ani/kill-SrcCodeOrigin] 37 commits: Check for negative type literals in the type checker (#26861)
by Apoorv Ingle (＠ani) 08 Mar '26

08 Mar '26

Apoorv Ingle pushed to branch wip/ani/kill-SrcCodeOrigin at Glasgow Haskell Compiler / GHC Commits: bd3eba86 by Vladislav Zavialov at 2026-02-27T05:48:01-05:00 Check for negative type literals in the type checker (#26861) GHC disallows negative type literals (e.g., -1), as tested by T8306 and T8412. This check is currently performed in the renamer: rnHsTyLit tyLit@(HsNumTy x i) = do when (i < 0) $ addErr $ TcRnNegativeNumTypeLiteral tyLit However, this check can be bypassed using RequiredTypeArguments (see the new test case T26861). Prior to this patch, such programs caused the compiler to hang instead of reporting a proper error. This patch addresses the issue by adding an equivalent check in the type checker, namely in tcHsType. The diff is deliberately minimal to facilitate backporting. A more comprehensive rework of HsTyLit is planned for a separate commit. - - - - - faf14e0c by Vladislav Zavialov at 2026-02-27T05:48:45-05:00 Consistent pretty-printing of HsString, HsIsString, HsStrTy Factor out a helper to pretty-print string literals, thus fixing newline handling for overloaded string literals and type literals. Test cases: T26860ppr T26860ppr_overloaded T26860ppr_tylit Follow up to ddf1434ff9bb08cfef3c93f23de6b83ec698aa27 - - - - - f108a972 by Arnaud Spiwack at 2026-02-27T12:53:01-05:00 Make list comprehension completely non-linear Fixes #25081 From the note: The usefulness of list comprehension in conjunction with linear types is dubious. After all, statements are made to be run many times, for instance in ```haskell [u | y <- [0,1], stmts] ``` both `u` and `stmts` are going to be run several times. In principle, though, there are some position in a monad comprehension expression which could be considered linear. We could try and make it so that these positions are considered linear by the typechecker, but in practice the desugarer doesn't take enough care to ensure that these are indeed desugared to linear sites. We tried in the past, and it turned out that we'd miss a desugaring corner case (#25772). Until there's a demand for this very specific improvement, let's instead be conservative, and consider list comprehension to be completely non-linear. - - - - - ae799cab by Simon Jakobi at 2026-02-27T12:53:54-05:00 PmAltConSet: Use Data.Set instead of Data.Map ...to store `PmLit`s. The Map was only used to map keys to themselves. Changing the Map to a Set saves a Word of memory per entry. Resolves #26756. - - - - - dcd7819c by Vladislav Zavialov at 2026-02-27T18:46:03-05:00 Drop HsTyLit in favor of HsLit (#26862, #25121) This patch is a small step towards unification of HsExpr and HsType, taking care of literals (HsLit) and type literals (HsTyLit). Additionally, it improves error messages for unsupported type literals, such as unboxed or fractional literals (test cases: T26862, T26862_th). Changes to the AST: * Use HsLit where HsTyLit was previously used * Use HsChar where HsCharTy was previously used * Use HsString where HsStrTy was previously used * Use HsNatural (NEW) where HsNumTy was previously used * Use HsDouble (NEW) to represent unsupported fractional type literals Changes to logic: * Parse unboxed and fractional type literals (to be rejected later) * Drop the check for negative literals in the renamer (rnHsTyLit) in favor of checking in the type checker (tc_hs_lit_ty) * Check for invalid type literals in TH (repTyLit) and report unrepresentable literals with ThUnsupportedTyLit * Allow negative type literals in TH (numTyLit). This is fine as these will be taken care of at splice time (test case: T8306_th) - - - - - c927954f by Vladislav Zavialov at 2026-02-27T18:46:50-05:00 Increase test coverage of diagnostics Add test cases for the previously untested diagnostics: [GHC-01239] PsErrIfInFunAppExpr [GHC-04807] PsErrProcInFunAppExpr [GHC-08195] PsErrInvalidRecordCon [GHC-16863] PsErrUnsupportedBoxedSumPat [GHC-18910] PsErrSemiColonsInCondCmd [GHC-24737] PsErrInvalidWhereBindInPatSynDecl [GHC-25037] PsErrCaseInFunAppExpr [GHC-25078] PsErrPrecedenceOutOfRange [GHC-28021] PsErrRecordSyntaxInPatSynDecl [GHC-35827] TcRnNonOverloadedSpecialisePragma [GHC-40845] PsErrUnpackDataCon [GHC-45106] PsErrInvalidInfixHole [GHC-50396] PsErrInvalidRuleActivationMarker [GHC-63930] MultiWayIfWithoutAlts [GHC-65536] PsErrNoSingleWhereBindInPatSynDecl [GHC-67630] PsErrMDoInFunAppExpr [GHC-70526] PsErrLetCmdInFunAppCmd [GHC-77808] PsErrDoCmdInFunAppCmd [GHC-86934] ClassPE [GHC-90355] PsErrLetInFunAppExpr [GHC-91745] CasesExprWithoutAlts [GHC-92971] PsErrCaseCmdInFunAppCmd [GHC-95644] PsErrBangPatWithoutSpace [GHC-97005] PsErrIfCmdInFunAppCmd Remove unused error constructors: [GHC-44524] PsErrExpectedHyphen [GHC-91382] TcRnIllegalKindSignature - - - - - 3a9470fd by Torsten Schmits at 2026-02-27T18:47:34-05:00 Avoid expensive computation for debug logging in `mergeDatabases` when log level is low This computed and traversed a set intersection for every single dependency unconditionally. - - - - - ea4c2cbd by Brandon Chinn at 2026-02-27T16:22:38-08:00 Implement QualifiedStrings (#26503) See Note [Implementation of QualifiedStrings] - - - - - 08bc245b by sheaf at 2026-03-01T11:11:54-05:00 Clean up join points, casts & ticks This commit shores up the logic dealing with casts and ticks occurring in between a join point binding and a jump. Fixes #26642 #26929 #26693 Makes progress on #14610 #26157 #26422 Changes: - Remove 'GHC.Types.Tickish.TickishScoping' in favour of simpler predicates 'tickishHasNoScope'/'tickishHasSoftScope', as things were before commit 993975d3. This makes the code easier to read and document (fewer indirections). - Introduce 'canCollectArgsThroughTick' for consistent handling of ticks around PrimOps and other 'Id's that cannot be eta-reduced. See overhauled Note [Ticks and mandatory eta expansion]. - New Note [JoinId vs TailCallInfo] in GHC.Core.SimpleOpt that explains robustness of JoinId vs fragility of TailCallInfo. - Allow casts/non-soft-scoped ticks to occur in between a join point binder and a jump, but only in Core Prep. See Note [Join points, casts, and ticks] and Note [Join points, casts, and ticks... in Core Prep] in GHC.Core.Opt.Simplify.Iteration. Also update Core Lint to account for this. See Note [Linting join points with casts or ticks] in GHC.Core.Lint. - Update 'GHC.Core.Utils.mergeCaseAlts' to avoid pushing a cast in between a join point binding and its jumps. This fixes #26642. See the new (MC5) and (MC6) in Note [Merge Nested Cases]. - Update float out to properly handle source note ticks. They are now properly floated out instead of being discarded. This increases the number of ticks in certain tests with -g. Test cases: T26642 and TrickyJoins. Metric increase due to more source note ticks with -g: ------------------------- Metric Increase: libdir size_hello_artifact size_hello_unicode ------------------------- - - - - - 476c4cdf by Sean D. Gillespie at 2026-03-02T10:14:37-05:00 Add SIMD absolute value on x86 and LLVM On x86, absolute value of 32 bits or less is implemented with PABSB/PABSW/PABSD if SSSE3 is available. Otherwise, there is a fallback for SSE2. For 64 bit integers it uses VPABSQ, required by AVX-512VL, with fallbacks for SSE4.2 and SSE2. There is no dedicated instruction for floating point absolute value on x86, so it is simulated using bitwise AND. Absolute value for signed integers and floats are implemented by the "llvm.abs/llvm.fabs" standard library intrinsics. This implementation uses MachOps constructors, unlike non-vector floating point absolute value, which uses CallishMachOps. - - - - - 709448c0 by Sean D. Gillespie at 2026-03-02T10:14:46-05:00 Add SIMD floating point square root On x86, this is implemented with the SQRTPS and SQRTPD instructions. On LLVM, it uses the sqrt library intrinstic. - - - - - 0deadf66 by Sean D. Gillespie at 2026-03-02T10:14:47-05:00 Improve error message for SIMD on aarch64 When encountering vector literals on aarch64, previously it would throw: <no location info>: error: panic! (the 'impossible' happened) GHC version 9.15.20251219: getRegister' (CmmLit:CmmVec): Now it is more consistent with the other vector operations: <no location info>: error: sorry! (unimplemented feature or known bug) GHC version 9.15.20251219: SIMD operations on AArch64 currently require the LLVM backend - - - - - 7d64031b by Vladislav Zavialov at 2026-03-03T11:09:28-05:00 Replace maybeAddSpace with spaceIfSingleQuote Simplify pretty-printing of HsTypes by using spaceIfSingleQuote. This allows us to drop the unwieldy lhsTypeHasLeadingPromotionQuote helper function. Follow-up to 178c1fd830c78377ef5d338406a41e1d8eb5f0da - - - - - 598db847 by Wolfgang Jeltsch at 2026-03-06T06:25:25-05:00 Correct `hIsReadable` and `hIsWritable` for duplex handles This contribution implements CLC proposal #371. It changes `hIsReadable` and `hIsWritable` such that they always throw a respective exception when encountering a closed or semi-closed handle, not just in the case of a file handle. - - - - - b90201e5 by Wolfgang Jeltsch at 2026-03-06T06:25:25-05:00 Document `SemiClosedHandle` - - - - - c9df72b5 by Wolfgang Jeltsch at 2026-03-06T06:25:25-05:00 Tell users what “semi-closed” means for duplex handles - - - - - a8aa1868 by Ilias Tsitsimpis at 2026-03-06T06:26:29-05:00 Fix determinism of linker arguments The switch from Data.Map to UniqMap in 3b5be05ac29 introduced non-determinism in the order of packages passed to the linker. This resulted in non-reproducible builds where the DT_NEEDED entries in dynamic libraries were ordered differently across builds. Fix the regression by explicitly sorting the package list derived from UniqMap. Fixes #26838 - - - - - 9b64ad3a by Matthew Pickering at 2026-03-06T06:27:16-05:00 determinism: Use a deterministic renaming when writing bytecode files Now when writing the bytecode file, a counter and substitution are used to provide deterministic keys to local variables (rather than relying on uniques). This change ensures that `.gbc` are produced deterministically. Fixes #26499 - - - - - d29800e0 by Teo Camarasu at 2026-03-06T06:28:46-05:00 ghc-internal: delete Version hs-boot loop Version has a Read instance which needs Unicode but part of the Unicode interface is the unicode version. This is easy to resolve. We simply don't re-export the version from the Unicode module. Resolves #26940 - - - - - ad25af90 by Sylvain Henry at 2026-03-06T06:30:33-05:00 Linker: implement support for COMMON symbols (#6107) Add some support for COMMON symbols. We don't support common symbols having different sizes where the larger one is allocated after the smaller one. The linker will fail with an appropriate error message if it happens. - - - - - 3b59f158 by Cheng Shao at 2026-03-06T06:31:16-05:00 compiler: fix redundant import of GHC.Hs.Lit This patch removes a redundant import of `GHC.Hs.Lit` which causes a ghc build failure with validate flavours when bootstrapping from 9.14. Fixes #26972. - - - - - 148d36f3 by Cheng Shao at 2026-03-06T06:32:01-05:00 compiler: avoid unneeded traversals in GHC.Unit.State Following !15591, this patch avoids unneeded traversals in `reportCycles`/`reportUnusable` when log verbosity is below given threshold. Also applies `logVerbAtLeast` when appropriate. Co-authored-by: Codex <codex(a)openai.com> - - - - - 7e31367c by Cheng Shao at 2026-03-06T06:32:46-05:00 ghc-internal: fix redundant import in GHC.Internal.Event.Windows.ManagedThreadPool This patch fixes redundant import in `GHC.Internal.Event.Windows.ManagedThreadPool` that causes a compilation error when building windows target with validate flavours and bootstrapping from 9.14. Fixes #26976. - - - - - fc8b8e27 by sheaf at 2026-03-06T06:33:28-05:00 System.Info.fullCompilerVersion: add 'since' annot Fixes #26973 - - - - - c8238375 by Sylvain Henry at 2026-03-06T06:34:23-05:00 Hadrian: deprecate --bignum and automatically enable +native_bignum for JS Deprecate --bignum=... to select the bignum backend. It's only used to select the native backend, and this can be done with the +native_bignum flavour transformer. Additionally, we automatically enable +native_bignum for the JS target because the GMP backend isn't supported. - - - - - a3ac7074 by Sylvain Henry at 2026-03-06T06:35:17-05:00 JS: fix putEnum/fromEnum (#24593) Don't go through Word16 when serializing Enums. - - - - - 0b36e96c by Andreas Klebinger at 2026-03-06T06:35:58-05:00 Docs: Document -fworker-wrapper-cbv default setting. Fixes #26841 - - - - - eca445e7 by mangoiv at 2026-03-07T05:02:36-05:00 drop deb9/10 from CI, add deb13 debian 9 and 10 are end of life, hence we drop them from our CI, but we do add debian 13. Jobs that were previously run on 9 and 10 run on 13, too, jobs that were run on 10, are run on 11 now. Jobs that were previously run on debian 12 are run on debian 13 now. This MR also updates hadrian's bootstrap plans for that reason. Metric Decrease: T9872d - - - - - 12f8b829 by Luite Stegeman at 2026-03-07T05:03:33-05:00 Fix GHC.Internal.Prim haddock Haddock used to parse Haskell source to generate documentation, but switched to using interface files instead. This broke documentation of the GHC.Internal.Prim module, since it's a wired-in interface that didn't provide a document structure. This patch adds the missing document structure and updates genprimopcode to make the section headers and descriptions available. fixes #26954 - - - - - f87e5e57 by Luite Stegeman at 2026-03-07T05:03:33-05:00 Remove obsolete --make-haskell-source from genprimopcode Now that haddock uses the wired-in interface for GHC.Internal.Prim, the generated Haskell source file is no longer needed. Remove the --make-haskell-source code generator from genprimopcode and replace the generated GHC/Internal/Prim.hs with a minimal static source file. - - - - - 4a7ddc7b by Sylvain Henry at 2026-03-07T05:04:59-05:00 JS: fix linking of exposed but non-preload units (#24886) Units exposed in the unit database but not explicitly passed on the command-line were not considered by the JS linker. This isn't an issue for cabal which passes every unit explicitly but it is an issue when using GHC directly (cf T24886 test). - - - - - 689aafcd by mangoiv at 2026-03-07T05:05:52-05:00 testsuite: double foundation timeout multiplier The runtime timeout in the foundation test was regularly hit by code generated by the wasm backend - we increase the timout since the high runtime is expected on the wasm backend for this rather complex test. Resolves #26938 - - - - - f2bfed15 by Apoorv Ingle at 2026-03-08T16:08:46-05:00 Work for #25001 Notes added [Error Context Stack] [Typechecking by expansion: overview] Notes updated Note [Expanding HsDo with XXExprGhcRn] ------------------------- Metric Decrease: T9020 ------------------------- * Streamlines implementations of `tcExpr` and `tcXExpr` to work on `XExpr` * Kills `VACtxt` (and its associated `VAExpansion` and `VACall`) datatype, it is subsumed by simply a `SrcSpan`. * Kills the function `addHeadCtxt` as it is now mearly setting a location * The function `tcValArgs` does its own argument number management * Makes `splitHsApps` not look through `XExpr` * `tcExprSigma` is called if the head of the expression after calling `splitHsApps` turns out to be an `XExpr` * Removes location information from `OrigPat` payload * Removes special case of tcBody from `tcLambdaMatches` * Removes special case of `dsExpr` for `ExpandedThingTc` * Rename `HsThingRn` to `SrcCodeCtxt` * Kills `tcl_in_gen_code` and `tcl_err_ctxt`. It is subsumed by `ErrCtxtStack` * Kills `ExpectedFunTyOrig`. It is subsumed by `CtOrigin` * Fixes `CtOrigin` for `HsProjection` case in `exprCtOrigin`. It was previously assigned to be `SectionOrigin`. It is now just the expression * Adds a new `CtOrigin.ExpansionOrigin` for storing the original syntax * Adds a new `CtOrigin.ExpectedTySyntax` as a replacement for `ExpectedTySyntaxOp`. Cannot kill the former yet because of `ApplicativeDo` * Renames `tcMonoExpr` -> `tcMonoLExpr`, `tcMonoExprNC` -> `tcMonoLExpr` * Renames `EValArg`, `EValArgQL` fields: `ea_ctxt` -> `ea_loc_span` and `eaql_ctx` -> `eaql_loc_span` * kill `PopErrCtxt` from `XXExprGhcRn` * simplify `addArgCtxt` and push `setSrcSpan` inside `addLExprCtxt`. Make sure addExprCtxt is not called by itself * fun_orig in tcApp depends on the SrcSpan of the head of the application chain (similar to addArgCtxt) * rename fun_ctxt to fun_lspan, fun_orig passed in tcInstFun to default to app chain head if its user located, fall back to srcCodeOrigin if it's a generated location * fix quickLookArg function to blame the correct application chain head. The arguments application chain head should be blamed, not the original head when we quick look arg * Make sure only expression wrapped around generated src span are ignored while adding them to the error context stack * `getDeepSubsumptionFlag_DataConHead` performs a non-trivial traversal if the expression passed to it is complex. This traversal is necessary if the head of the function is an `XExpr` and `splitHsApps` does not look through them - The deepsubsumption flag is stored in EVAlArgQL to reduce the need to call `getDeepSubsumptionFlag_DataConHead` - `getDeepSubsumptionFlag_DataConHead` is called in `tcExprSigma` and `tcInferAppHead` to reduce AST traversals * Make a new variant `GeneratedSrcSpan` in `SrcSpan` for HIEAst Nodes * wrap `fromListN` with a generated src span with GeneratedSrcSpanDetails field to store the original srcspan * remove `UnhelpfulGenerated` from `UnhelpfulSpanReason` and into new datatype `GeneratedSrcSpanDetails` - - - - - 466e162c by Apoorv Ingle at 2026-03-08T16:11:02-05:00 trying to remove SrcCodeOrigin - - - - - 2949e4c3 by Simon Peyton Jones at 2026-03-08T16:11:03-05:00 Improvements in ErrCtxt - - - - - 5ed13f95 by Apoorv Ingle at 2026-03-08T16:11:04-05:00 ErrCtxtMsg to CtOrigin - - - - - b7beec74 by Apoorv Ingle at 2026-03-08T16:11:05-05:00 remove CtOrigin.ExpansionOrigin in favour of errCtxtCtOrigin, remove CtOrign from ErrMsgCtxt.FunTysCtxt - - - - - 368 changed files: - .gitlab-ci.yml - .gitlab/generate-ci/gen_ci.hs - .gitlab/jobs.yaml - .gitlab/rel_eng/fetch-gitlab-artifacts/fetch_gitlab.py - .gitlab/rel_eng/mk-ghcup-metadata/mk_ghcup_metadata.py - compiler/GHC.hs - compiler/GHC/Builtin/PrimOps.hs - compiler/GHC/Builtin/Types.hs - compiler/GHC/Builtin/Utils.hs - compiler/GHC/Builtin/primops.txt.pp - compiler/GHC/ByteCode/Serialize.hs - compiler/GHC/Cmm/MachOp.hs - compiler/GHC/Cmm/Node.hs - compiler/GHC/CmmToAsm/AArch64/CodeGen.hs - compiler/GHC/CmmToAsm/X86/CodeGen.hs - compiler/GHC/CmmToAsm/X86/Instr.hs - compiler/GHC/CmmToAsm/X86/Ppr.hs - compiler/GHC/CmmToC.hs - compiler/GHC/CmmToLlvm/CodeGen.hs - compiler/GHC/Core.hs - compiler/GHC/Core/Lint.hs - compiler/GHC/Core/Opt/Arity.hs - compiler/GHC/Core/Opt/FloatIn.hs - compiler/GHC/Core/Opt/FloatOut.hs - compiler/GHC/Core/Opt/OccurAnal.hs - compiler/GHC/Core/Opt/Simplify/Iteration.hs - compiler/GHC/Core/SimpleOpt.hs - compiler/GHC/Core/Utils.hs - compiler/GHC/CoreToStg/Prep.hs - compiler/GHC/Driver/Config/Core/Lint.hs - compiler/GHC/Driver/Flags.hs - compiler/GHC/Driver/Main.hs - compiler/GHC/Hs/DocString.hs - compiler/GHC/Hs/Expr.hs - compiler/GHC/Hs/Expr.hs-boot - compiler/GHC/Hs/Instances.hs - compiler/GHC/Hs/Lit.hs - compiler/GHC/Hs/Pat.hs - compiler/GHC/Hs/Syn/Type.hs - compiler/GHC/Hs/Type.hs - compiler/GHC/Hs/Utils.hs - compiler/GHC/HsToCore/Errors/Ppr.hs - compiler/GHC/HsToCore/Errors/Types.hs - compiler/GHC/HsToCore/Expr.hs - compiler/GHC/HsToCore/Match.hs - compiler/GHC/HsToCore/Match/Literal.hs - compiler/GHC/HsToCore/Monad.hs - compiler/GHC/HsToCore/Pmc.hs - compiler/GHC/HsToCore/Pmc/Desugar.hs - compiler/GHC/HsToCore/Pmc/Solver/Types.hs - compiler/GHC/HsToCore/Quote.hs - compiler/GHC/HsToCore/Ticks.hs - compiler/GHC/Iface/Ext/Ast.hs - compiler/GHC/Iface/Ext/Utils.hs - compiler/GHC/Iface/Tidy.hs - compiler/GHC/Parser.y - compiler/GHC/Parser/Errors/Ppr.hs - compiler/GHC/Parser/Errors/Types.hs - compiler/GHC/Parser/HaddockLex.x - compiler/GHC/Parser/Lexer.x - compiler/GHC/Parser/PostProcess.hs - compiler/GHC/Parser/String.hs - compiler/GHC/Rename/Bind.hs - compiler/GHC/Rename/Expr.hs - compiler/GHC/Rename/HsType.hs - + compiler/GHC/Rename/Lit.hs - compiler/GHC/Rename/Names.hs - compiler/GHC/Rename/Pat.hs - compiler/GHC/Rename/Utils.hs - compiler/GHC/Runtime/Debugger/Breakpoints.hs - compiler/GHC/Runtime/Interpreter/JS.hs - compiler/GHC/StgToCmm/Expr.hs - compiler/GHC/StgToCmm/Prim.hs - compiler/GHC/StgToJS/Object.hs - compiler/GHC/StgToJS/Prim.hs - compiler/GHC/Tc/Deriv.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/App.hs-boot - compiler/GHC/Tc/Gen/Bind.hs - compiler/GHC/Tc/Gen/Do.hs - compiler/GHC/Tc/Gen/Expr.hs - compiler/GHC/Tc/Gen/Expr.hs-boot - compiler/GHC/Tc/Gen/Head.hs - compiler/GHC/Tc/Gen/HsType.hs - compiler/GHC/Tc/Gen/Match.hs - compiler/GHC/Tc/Gen/Match.hs-boot - compiler/GHC/Tc/Gen/Pat.hs - compiler/GHC/Tc/Gen/Sig.hs - compiler/GHC/Tc/Gen/Splice.hs - compiler/GHC/Tc/Instance/Class.hs - compiler/GHC/Tc/Module.hs - compiler/GHC/Tc/Solver/Solve.hs - compiler/GHC/Tc/TyCl.hs - compiler/GHC/Tc/TyCl/Class.hs - compiler/GHC/Tc/TyCl/Instance.hs - compiler/GHC/Tc/TyCl/PatSyn.hs - compiler/GHC/Tc/Types.hs - compiler/GHC/Tc/Types/BasicTypes.hs - compiler/GHC/Tc/Types/Constraint.hs - compiler/GHC/Tc/Types/CtLoc.hs - compiler/GHC/Tc/Types/ErrCtxt.hs - compiler/GHC/Tc/Types/LclEnv.hs - compiler/GHC/Tc/Types/Origin.hs - compiler/GHC/Tc/Types/Origin.hs-boot - compiler/GHC/Tc/Utils/Instantiate.hs - compiler/GHC/Tc/Utils/Monad.hs - compiler/GHC/Tc/Utils/TcType.hs-boot - compiler/GHC/Tc/Utils/Unify.hs - compiler/GHC/Tc/Validity.hs - compiler/GHC/Tc/Zonk/Type.hs - compiler/GHC/ThToHs.hs - compiler/GHC/Types/Basic.hs - compiler/GHC/Types/Error.hs - + compiler/GHC/Types/Error.hs-boot - compiler/GHC/Types/Error/Codes.hs - compiler/GHC/Types/Hint/Ppr.hs - compiler/GHC/Types/Id/Info.hs - compiler/GHC/Types/Name/Reader.hs - compiler/GHC/Types/SourceText.hs - compiler/GHC/Types/SrcLoc.hs - compiler/GHC/Types/Tickish.hs - compiler/GHC/Unit/State.hs - + compiler/GHC/Unit/State.hs-boot - compiler/GHC/Utils/Binary.hs - compiler/GHC/Utils/Error.hs - compiler/GHC/Utils/Logger.hs - compiler/Language/Haskell/Syntax/Expr.hs - compiler/Language/Haskell/Syntax/Extension.hs - compiler/Language/Haskell/Syntax/Lit.hs - compiler/Language/Haskell/Syntax/Pat.hs - compiler/Language/Haskell/Syntax/Type.hs - compiler/ghc.cabal.in - docs/users_guide/9.16.1-notes.rst - + docs/users_guide/exts/qualified_strings.rst - docs/users_guide/using-optimisation.rst - ghc/GHCi/UI.hs - ghc/GHCi/UI/Info.hs - hadrian/README.md - hadrian/bootstrap/generate_bootstrap_plans - hadrian/bootstrap/plan-9_10_1.json - hadrian/bootstrap/plan-9_10_2.json - + hadrian/bootstrap/plan-9_10_3.json - hadrian/bootstrap/plan-bootstrap-9_10_1.json - hadrian/bootstrap/plan-bootstrap-9_10_2.json - + hadrian/bootstrap/plan-bootstrap-9_10_3.json - hadrian/src/CommandLine.hs - hadrian/src/Main.hs - hadrian/src/Rules/Generate.hs - hadrian/src/Settings.hs - hadrian/src/Settings/Builders/GenPrimopCode.hs - libraries/base/changelog.md - libraries/base/src/GHC/Base.hs - libraries/base/src/GHC/Exts.hs - libraries/base/src/GHC/Unicode.hs - libraries/base/src/System/Info.hs - libraries/ghc-experimental/CHANGELOG.md - libraries/ghc-internal/ghc-internal.cabal.in - − libraries/ghc-internal/src/GHC/Internal/Data/Version.hs-boot - libraries/ghc-internal/src/GHC/Internal/Event/Windows/ManagedThreadPool.hs - libraries/ghc-internal/src/GHC/Internal/IO/Handle.hs - libraries/ghc-internal/src/GHC/Internal/IO/Handle/Text.hs - libraries/ghc-internal/src/GHC/Internal/IO/Handle/Types.hs - libraries/ghc-internal/src/GHC/Internal/LanguageExtensions.hs - + libraries/ghc-internal/src/GHC/Internal/Prim.hs - libraries/ghc-internal/src/GHC/Internal/TH/Lib.hs - libraries/ghc-internal/src/GHC/Internal/Unicode.hs - libraries/ghc-internal/src/GHC/Internal/Unicode/Version.hs - libraries/ghc-internal/tools/ucd2haskell/exe/UCD2Haskell/ModuleGenerators.hs - rts/Linker.c - rts/LinkerInternals.h - rts/linker/Elf.c - rts/linker/MachO.c - rts/linker/PEi386.c - testsuite/driver/perf_notes.py - testsuite/tests/codeGen/should_compile/debug.stdout - + testsuite/tests/dependent/should_fail/SelfDepCls.hs - + testsuite/tests/dependent/should_fail/SelfDepCls.stderr - testsuite/tests/dependent/should_fail/all.T - testsuite/tests/diagnostic-codes/codes.stdout - testsuite/tests/driver/T4437.hs - testsuite/tests/ghc-api/annotations-literals/literals.stdout - testsuite/tests/ghc-api/annotations-literals/parsed.hs - testsuite/tests/ghci/should_run/all.T - testsuite/tests/indexed-types/should_fail/T2693.stderr - testsuite/tests/indexed-types/should_fail/T5439.stderr - 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/interface-stability/template-haskell-exports.stdout - + testsuite/tests/javascript/T24886.hs - + testsuite/tests/javascript/T24886.stderr - + testsuite/tests/javascript/T24886.stdout - testsuite/tests/javascript/all.T - − testsuite/tests/linear/should_compile/LinearListComprehension.hs - testsuite/tests/linear/should_compile/all.T - testsuite/tests/linear/should_fail/T25081.hs - testsuite/tests/linear/should_fail/T25081.stderr - testsuite/tests/module/all.T - + testsuite/tests/module/mod70b.hs - + testsuite/tests/module/mod70b.stderr - testsuite/tests/numeric/should_run/all.T - testsuite/tests/overloadedrecflds/should_compile/all.T - testsuite/tests/overloadedrecflds/should_fail/T26480b.stderr - testsuite/tests/overloadedrecflds/should_run/all.T - + testsuite/tests/parser/should_fail/NoBlockArgumentsFail4.hs - + testsuite/tests/parser/should_fail/NoBlockArgumentsFail4.stderr - testsuite/tests/parser/should_fail/NoBlockArgumentsFailArrowCmds.hs - testsuite/tests/parser/should_fail/NoBlockArgumentsFailArrowCmds.stderr - + testsuite/tests/parser/should_fail/NoDoAndIfThenElseArrowCmds.hs - 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+ testsuite/tests/parser/should_fail/unpack_data_con.hs - + testsuite/tests/parser/should_fail/unpack_data_con.stderr - testsuite/tests/patsyn/should_fail/T10426.stderr - testsuite/tests/patsyn/should_fail/all.T - + testsuite/tests/patsyn/should_fail/patsyn_where_fail1.hs - + testsuite/tests/patsyn/should_fail/patsyn_where_fail1.stderr - + testsuite/tests/patsyn/should_fail/patsyn_where_fail2.hs - + testsuite/tests/patsyn/should_fail/patsyn_where_fail2.stderr - + testsuite/tests/patsyn/should_fail/patsyn_where_fail3.hs - + testsuite/tests/patsyn/should_fail/patsyn_where_fail3.stderr - + testsuite/tests/patsyn/should_fail/patsyn_where_fail4.hs - + testsuite/tests/patsyn/should_fail/patsyn_where_fail4.stderr - testsuite/tests/plugins/test-defaulting-plugin.stderr - testsuite/tests/pmcheck/should_compile/T11303.hs - testsuite/tests/printer/T17697.stderr - + testsuite/tests/qualified-strings/Makefile - + testsuite/tests/qualified-strings/should_compile/Example/Length.hs - + testsuite/tests/qualified-strings/should_compile/all.T - 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testsuite/tests/typecheck/should_fail/T7857.stderr - testsuite/tests/typecheck/should_fail/T8306.stderr - testsuite/tests/typecheck/should_fail/T8603.stderr - testsuite/tests/typecheck/should_fail/T9612.stderr - testsuite/tests/typecheck/should_fail/all.T - testsuite/tests/typecheck/should_fail/tcfail102.stderr - testsuite/tests/typecheck/should_fail/tcfail128.stderr - testsuite/tests/typecheck/should_fail/tcfail140.stderr - testsuite/tests/typecheck/should_fail/tcfail181.stderr - testsuite/tests/unboxedsums/all.T - + testsuite/tests/unboxedsums/unboxedsums4p.hs - + testsuite/tests/unboxedsums/unboxedsums4p.stderr - testsuite/tests/vdq-rta/should_compile/all.T - + testsuite/tests/warnings/should_compile/SpecMultipleTysMono.hs - + testsuite/tests/warnings/should_compile/SpecMultipleTysMono.stderr - testsuite/tests/warnings/should_compile/all.T - utils/check-exact/ExactPrint.hs - utils/check-exact/Parsers.hs - utils/check-exact/Transform.hs - utils/check-exact/Utils.hs - utils/genprimopcode/Main.hs - utils/haddock/haddock-api/src/Haddock/Backends/Hyperlinker/Parser.hs - utils/haddock/haddock-api/src/Haddock/Backends/LaTeX.hs - utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Decl.hs - utils/haddock/haddock-api/src/Haddock/Backends/Xhtml/Utils.hs - utils/haddock/haddock-api/src/Haddock/Convert.hs - utils/haddock/haddock-api/src/Haddock/Interface/Rename.hs - utils/haddock/haddock-api/src/Haddock/Types.hs The diff was not included because it is too large. View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/f9ab1b23f2e2611bfd0a2a5d6c5fd7… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/f9ab1b23f2e2611bfd0a2a5d6c5fd7… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/ani/kill-SrcCodeOrigin] remove CtOrigin.ExpansionOrigin in favour of errCtxtCtOrigin, remove CtOrign...
by Apoorv Ingle (＠ani) 08 Mar '26

08 Mar '26

Apoorv Ingle pushed to branch wip/ani/kill-SrcCodeOrigin at Glasgow Haskell Compiler / GHC Commits: f9ab1b23 by Apoorv Ingle at 2026-03-08T16:05:19-05:00 remove CtOrigin.ExpansionOrigin in favour of errCtxtCtOrigin, remove CtOrign from ErrMsgCtxt.FunTysCtxt - - - - - 12 changed files: - 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/Match.hs - compiler/GHC/Tc/Gen/Pat.hs - compiler/GHC/Tc/Instance/Class.hs - compiler/GHC/Tc/Types/ErrCtxt.hs - compiler/GHC/Tc/Types/Origin.hs - compiler/GHC/Tc/Types/Origin.hs-boot - compiler/GHC/Tc/Utils/Unify.hs Changes: ===================================== compiler/GHC/Tc/Errors.hs ===================================== @@ -83,7 +83,6 @@ import qualified GHC.Data.Strict as Strict import Language.Haskell.Syntax.Basic (FieldLabelString(..)) -import Language.Haskell.Syntax (HsExpr (RecordUpd, HsGetField, HsProjection)) import Control.Monad ( when, foldM, forM_ ) import Data.Bifunctor ( bimap ) @@ -2778,10 +2777,6 @@ isHasFieldOrigin = \case RecordUpdOrigin {} -> True RecordFieldProjectionOrigin {} -> True GetFieldOrigin {} -> True - ExpansionOrigin (ExprCtxt e) - | HsGetField{} <- e -> True - | RecordUpd{} <- e -> True - | HsProjection{} <- e -> True _ -> False ----------------------- ===================================== compiler/GHC/Tc/Errors/Ppr.hs ===================================== @@ -7795,7 +7795,7 @@ pprErrCtxtMsg = \case <+> text "is applied to too many arguments" | otherwise - -> empty + -> text "Debug" <+> vcat [ppr fun, ppr n_val_args, ppr res_fun, ppr res_env, ppr n_fun, ppr n_env] where not_fun ty -- ty is definitely not an arrow type, -- and cannot conceivably become one ===================================== compiler/GHC/Tc/Gen/App.hs ===================================== @@ -907,10 +907,10 @@ tcInstFun do_ql inst_final ds_flag (fun_orig, rn_fun, fun_lspan) tc_fun fun_sigm ; return (mkScaled mult_ty arg_nu) } - mk_herald :: HsExpr GhcTc -> HsExpr GhcRn -> CtOrigin + mk_herald :: HsExpr GhcTc -> HsExpr GhcRn -> ExpectedFunTyOrigin mk_herald tc_fun arg = case fun_orig of - ExpansionOrigin (StmtErrCtxt{}) -> ExpectedTySyntax DoStmtOrigin arg + DoStmtOrigin -> ExpectedTySyntax DoStmtOrigin arg _ -> ExpectedFunTyArg (HsExprTcThing tc_fun) arg -- Is the argument supposed to instantiate a forall? ===================================== compiler/GHC/Tc/Gen/Expr.hs ===================================== @@ -1067,7 +1067,7 @@ tcSynArgE orig op sigma_ty syn_ty thing_inside -- fixed RuntimeRep, as needed to call mkWpFun. ; return (result, match_wrapper <.> fun_wrap) } where - herald = ExpectedFunTySyntaxOp 1 orig op + herald = ExpectedFunTySyntaxOp orig op go rho_ty (SynType the_ty) = do { wrap <- tcSubTypePat orig GenSigCtxt the_ty rho_ty @@ -1096,7 +1096,7 @@ tcSynArgA orig op sigma_ty arg_shapes res_shape thing_inside thing_inside (arg_results ++ res_results) (map scaledMult arg_tys ++ arg_res_mults) ; return (result, match_wrapper, arg_wrappers, res_wrapper) } where - herald = ExpectedFunTySyntaxOp (length arg_shapes) orig op + herald = ExpectedFunTySyntaxOp orig op tc_syn_args_e :: [TcSigmaTypeFRR] -> [SyntaxOpType] -> ([TcSigmaTypeFRR] -> [Mult] -> TcM a) @@ -1848,4 +1848,3 @@ checkMissingFields con_like rbinds arg_tys field_strs = conLikeImplBangs con_like fl `elemField` flds = any (\ fl' -> flSelector fl == fl') flds - ===================================== compiler/GHC/Tc/Gen/Head.hs ===================================== @@ -465,7 +465,7 @@ tcInferAppHead_maybe fun = case fun of -- visible type applications in the argument. -- c.f. T19167 (\ (e, ds_flag, ty) -> (mkExpandedTc o e, ds_flag, ty)) <$> - tcExprSigma False (ExpansionOrigin o) e + tcExprSigma False (errCtxtCtOrigin o) e ) _ -> return Nothing ===================================== compiler/GHC/Tc/Gen/Match.hs ===================================== @@ -114,7 +114,7 @@ tcFunBindMatches ctxt fun_name mult matches invis_pat_tys exp_ty = assertPpr (funBindPrecondition matches) (pprMatches matches) $ do { -- Check that they all have the same no of arguments arity <- checkArgCounts matches - ; let herald = ExpectedFunTyMatches arity (NameThing fun_name) matches + ; let herald = ExpectedFunTyMatches (NameThing fun_name) matches ; traceTc "tcFunBindMatches 1" (ppr fun_name $$ ppr mult $$ ppr exp_ty $$ ppr arity) ; (wrap_fun, r) ===================================== compiler/GHC/Tc/Gen/Pat.hs ===================================== @@ -703,7 +703,7 @@ tc_pat scaled_exp_pat_ty@(Scaled w_pat exp_pat_ty) penv ps_pat thing_inside = -- 'view_expr' must be a function; expose its argument/result types -- using 'matchActualFunTy'. - ; let herald = ExpectedFunTyViewPat 1 $ unLoc view_expr + ; let herald = ExpectedFunTyViewPat $ unLoc view_expr ; (view_expr_co1, Scaled _mult view_arg_ty, view_res_ty) <- matchActualFunTy herald (Just . HsExprRnThing $ unLoc view_expr) (1, view_expr_rho) view_expr_rho ===================================== compiler/GHC/Tc/Instance/Class.hs ===================================== @@ -20,7 +20,7 @@ import GHC.Tc.Instance.Typeable import GHC.Tc.Utils.TcMType import GHC.Tc.Types.Evidence import GHC.Tc.Types.CtLoc -import GHC.Tc.Types.Origin ( InstanceWhat (..), SafeOverlapping, CtOrigin(ExpansionOrigin) ) +import GHC.Tc.Types.Origin ( InstanceWhat (..), SafeOverlapping, CtOrigin(GetFieldOrigin) ) import GHC.Tc.Instance.Family( tcGetFamInstEnvs, tcLookupDataFamInst, FamInstEnvs ) import GHC.Rename.Env( addUsedGRE, addUsedDataCons, DeprecationWarnings (..) ) @@ -1288,7 +1288,7 @@ warnIncompleteRecSel dflags sel_id ct_loc -- GHC.Tc.Gen.App.tcInstFun arranges that the CtOrigin of (r.x) is GetFieldOrigin, -- despite the expansion to (getField @"x" r) - isGetFieldOrigin (ExpansionOrigin (ExprCtxt (HsGetField {}))) = True + isGetFieldOrigin GetFieldOrigin{} = True isGetFieldOrigin _ = False lookupHasFieldLabel ===================================== compiler/GHC/Tc/Types/ErrCtxt.hs ===================================== @@ -21,7 +21,7 @@ import GHC.Hs.Extension import GHC.Parser.Annotation ( LocatedN, SrcSpanAnnA ) import GHC.Tc.Errors.Types.PromotionErr ( TermLevelUseCtxt ) -import {-# SOURCE #-} GHC.Tc.Types.Origin ( CtOrigin ) +import {-# SOURCE #-} GHC.Tc.Types.Origin ( CtOrigin, ExpectedFunTyOrigin ) import GHC.Tc.Utils.TcType ( TcType, TcTyCon, ExpType ) import GHC.Types.Basic ( TyConFlavour ) @@ -283,7 +283,7 @@ data ErrCtxtMsg -- | In a function application. | FunAppCtxt !FunAppCtxtFunArg !Int -- | In a function call. - | FunTysCtxt !CtOrigin !Type !Int !Int + | FunTysCtxt !ExpectedFunTyOrigin !Type !Int !Int -- | In the result of a function call. | FunResCtxt !(HsExpr GhcTc) !Int !Type !Type !Int !Int -- | In the declaration of a type constructor. ===================================== compiler/GHC/Tc/Types/Origin.hs ===================================== @@ -9,9 +9,8 @@ module GHC.Tc.Types.Origin ( -- * CtOrigin CtOrigin(..), exprCtOrigin, lexprCtOrigin, matchesCtOrigin, grhssCtOrigin, - srcCodeOriginCtOrigin, + srcCodeOriginCtOrigin, errCtxtCtOrigin, invisibleOrigin_maybe, isVisibleOrigin, toInvisibleOrigin, - updatePositionCtOrigin, pprCtOrigin, pprCtOriginBriefly, isGivenOrigin, defaultReprEqOrigins, isWantedSuperclassOrigin, ClsInstOrQC(..), NakedScFlag(..), NonLinearPatternReason(..), @@ -37,7 +36,7 @@ module GHC.Tc.Types.Origin ( FRRArrowContext(..), pprFRRArrowContext, -- ** ExpectedFunTy FixedRuntimeRepOrigin - pprExpectedFunTyHerald, + ExpectedFunTyOrigin(..), pprExpectedFunTyOrigin, pprExpectedFunTyHerald, -- * InstanceWhat InstanceWhat(..), SafeOverlapping @@ -511,72 +510,6 @@ data CtOrigin | AmbiguityCheckOrigin UserTypeCtxt | ImplicitLiftOrigin HsImplicitLiftSplice - | ExpansionOrigin ErrCtxtMsg -- This is due to an expansion of the original thing given by the ErrCtxtMsg - - | ExpectedTySyntax !CtOrigin (HsExpr GhcRn) - - -- | A rebindable syntax operator is expected to have a function type. - -- - -- Test cases for representation-polymorphism checks: - -- RepPolyDoBind, RepPolyDoBody{1,2}, RepPolyMc{Bind,Body,Guard}, RepPolyNPlusK - | forall (p :: Pass) - . (OutputableBndrId p) - => ExpectedFunTySyntaxOp Int - !CtOrigin !(HsExpr (GhcPass p)) - -- ^ rebindable syntax operator - - -- | A view pattern must have a function type. - -- - -- Test cases for representation-polymorphism checks: - -- RepPolyBinder - | ExpectedFunTyViewPat Int - !(HsExpr GhcRn) - -- ^ function used in the view pattern - - -- | Need to be able to extract an argument type from a function type. - -- - -- Test cases for representation-polymorphism checks: - -- RepPolyApp - | forall (p :: Pass) - . Outputable (HsExpr (GhcPass p)) => ExpectedFunTyArg - !TypedThing - -- ^ function - !(HsExpr (GhcPass p)) - -- ^ argument - - -- | Ensure that a function defined by equations indeed has a function type - -- with the appropriate number of arguments. - -- - -- Test cases for representation-polymorphism checks: - -- RepPolyBinder, RepPolyRecordPattern, RepPolyWildcardPattern - | ExpectedFunTyMatches Int - !TypedThing - -- ^ name of the function - !(MatchGroup GhcRn (LHsExpr GhcRn)) - -- ^ equations - - -- | Ensure that a lambda abstraction has a function type. - -- - -- Test cases for representation-polymorphism checks: - -- RepPolyLambda, RepPolyMatch - | ExpectedFunTyLam HsLamVariant - !(HsExpr GhcRn) - -- ^ the entire lambda-case expression - - -- | A partial application of the constructor of a representation-polymorphic - -- unlifted newtype in which the argument type does not have a fixed - -- runtime representation. - -- - -- Test cases: UnliftedNewtypesLevityBinder, UnliftedNewtypesCoerceFail. - | FRRRepPolyUnliftedNewtype !DataCon - - -updatePositionCtOrigin :: Int -> CtOrigin -> CtOrigin -updatePositionCtOrigin i (ExpectedFunTySyntaxOp _ c e) = ExpectedFunTySyntaxOp i c e -updatePositionCtOrigin i (ExpectedFunTyViewPat _ e) = ExpectedFunTyViewPat i e -updatePositionCtOrigin i (ExpectedFunTyMatches _ t e) = ExpectedFunTyMatches i t e -updatePositionCtOrigin _ c = c - data NonLinearPatternReason = LazyPatternReason @@ -678,18 +611,18 @@ exprCtOrigin (HsTypedBracket {}) = Shouldn'tHappenOrigin "TH typed bracket" exprCtOrigin (HsUntypedBracket {}) = Shouldn'tHappenOrigin "TH untyped bracket" exprCtOrigin (HsTypedSplice {}) = Shouldn'tHappenOrigin "TH typed splice" exprCtOrigin (HsUntypedSplice {}) = Shouldn'tHappenOrigin "TH untyped splice" -exprCtOrigin (HsProc {}) = Shouldn'tHappenOrigin "proc" -exprCtOrigin (HsStatic {}) = Shouldn'tHappenOrigin "static expression" -exprCtOrigin (HsEmbTy {}) = Shouldn'tHappenOrigin "type expression" -exprCtOrigin (HsHole _) = Shouldn'tHappenOrigin "hole expression" -exprCtOrigin (HsForAll {}) = Shouldn'tHappenOrigin "forall telescope" -- See Note [Types in terms] -exprCtOrigin (HsQual {}) = Shouldn'tHappenOrigin "constraint context" -- See Note [Types in terms] -exprCtOrigin (HsFunArr {}) = Shouldn'tHappenOrigin "function arrow" -- See Note [Types in terms] -exprCtOrigin e@(ExplicitList {}) = ExpansionOrigin (ExprCtxt e) -exprCtOrigin e@(HsIf {}) = ExpansionOrigin (ExprCtxt e) -exprCtOrigin e@(HsProjection _ _) = ExpansionOrigin (ExprCtxt e) -exprCtOrigin e@(RecordUpd{}) = ExpansionOrigin (ExprCtxt e) -exprCtOrigin e@(HsGetField{}) = ExpansionOrigin (ExprCtxt e) +exprCtOrigin (HsProc {}) = Shouldn'tHappenOrigin "proc" +exprCtOrigin (HsStatic {}) = Shouldn'tHappenOrigin "static expression" +exprCtOrigin (HsEmbTy {}) = Shouldn'tHappenOrigin "type expression" +exprCtOrigin (HsHole _) = Shouldn'tHappenOrigin "hole expression" +exprCtOrigin (HsForAll {}) = Shouldn'tHappenOrigin "forall telescope" -- See Note [Types in terms] +exprCtOrigin (HsQual {}) = Shouldn'tHappenOrigin "constraint context" -- See Note [Types in terms] +exprCtOrigin (HsFunArr {}) = Shouldn'tHappenOrigin "function arrow" -- See Note [Types in terms] +exprCtOrigin (ExplicitList {}) = ListOrigin +exprCtOrigin (HsIf {}) = IfThenElseOrigin +exprCtOrigin (HsProjection _ p) = RecordFieldProjectionOrigin (FieldLabelStrings $ fmap noLocA p) +exprCtOrigin (RecordUpd _ _ flds) = RecordUpdOrigin flds +exprCtOrigin (HsGetField _ _ f) = GetFieldOrigin (fmap field_label $ dfoLabel (unLoc f)) exprCtOrigin (XExpr (ExpandedThingRn o _)) = errCtxtCtOrigin o exprCtOrigin (XExpr (HsRecSelRn f)) = OccurrenceOfRecSel $ L (getLoc $ foLabel f) (foExt f) @@ -734,31 +667,6 @@ pprCtOrigin :: CtOrigin -> SDoc pprCtOrigin (GivenOrigin sk) = ctoHerald <+> ppr sk -pprCtOrigin (ExpansionOrigin o) - = ctoHerald <+> what - where - what :: SDoc - what = case o of - StmtErrCtxt{} -> - text "a do statement" - DoStmtErrCtxt{} -> - text "a do statement" - StmtErrCtxtPat _ _ p -> - text "a do statement" $$ - text "with the failable pattern" <+> quotes (ppr p) - ExprCtxt (HsGetField _ _ (L _ f)) -> - hsep [text "selecting the field", quotes (ppr f)] - ExprCtxt (HsOverLabel _ l) -> - hsep [text "the overloaded label" , quotes (char '#' <> ppr l)] - ExprCtxt (RecordUpd{}) -> text "a record update" - ExprCtxt (ExplicitList{}) -> text "an overloaded list" - ExprCtxt (HsIf{}) -> text "an if-then-else expression" - ExprCtxt (HsProjection _ p) -> text "the record selector" <+> - quotes (ppr ((FieldLabelStrings $ fmap noLocA p))) - ExprCtxt e -> text "the expression" <+> (ppr e) - RecordUpdCtxt{} -> text "a record update" - _ -> text "shouldn't happen ExpansionOrigin pprCtOrigin" - pprCtOrigin (GivenSCOrigin sk d blk) = vcat [ ctoHerald <+> pprSkolInfo sk , whenPprDebug (braces (text "given-sc:" <+> ppr d <> comma <> ppr blk)) ] @@ -865,46 +773,9 @@ pprCtOrigin (NonLinearPatternOrigin reason pat) = hang (ctoHerald <+> text "a non-linear pattern" <+> quotes (ppr pat)) 2 (pprNonLinearPatternReason reason) -pprCtOrigin (ExpectedTySyntax orig arg) - = vcat [ text "The expression" <+> quotes (ppr arg) - , nest 2 (ppr orig) ] - -pprCtOrigin (ExpectedFunTySyntaxOp i orig op) = - vcat [ sep [ the_arg_of i - , text "the rebindable syntax operator" - , quotes (ppr op) ] - , nest 2 (ppr orig) ] - -pprCtOrigin (ExpectedFunTyViewPat i expr) = - vcat [ the_arg_of i <+> text "the view pattern" - , nest 2 (ppr expr) ] -pprCtOrigin (ExpectedFunTyArg fun arg) = - sep [ text "The argument" - , quotes (ppr arg) - , text "of" - , quotes (ppr fun) ] -pprCtOrigin (ExpectedFunTyMatches i fun (MG { mg_alts = L _ alts })) - | null alts - = the_arg_of i <+> quotes (ppr fun) - | otherwise - = text "The" <+> speakNth i <+> text "pattern in the equation" <> plural alts - <+> text "for" <+> quotes (ppr fun) -pprCtOrigin (ExpectedFunTyLam lam_variant _) = binder_of $ lamCaseKeyword lam_variant -pprCtOrigin (FRRRepPolyUnliftedNewtype dc) = - vcat [ text "Unsaturated use of a representation-polymorphic unlifted newtype." - , text "The argument of the newtype constructor" <+> quotes (ppr dc) ] - pprCtOrigin simple_origin = ctoHerald <+> pprCtOriginBriefly simple_origin -the_arg_of :: Int -> SDoc -the_arg_of i = text "The" <+> speakNth i <+> text "argument of" - -binder_of :: SDoc -> SDoc -binder_of what = text "The binder of the" <+> what <+> text "expression" - - - -- | Print CtOrigin briefly, with a one-liner pprCtOriginBriefly :: CtOrigin -> SDoc pprCtOriginBriefly = ppr_br -- ppr_br is a local function with a short name! @@ -976,22 +847,6 @@ ppr_br (InstanceSigOrigin {}) = text "a type signature in an instance" ppr_br (AmbiguityCheckOrigin {}) = text "a type ambiguity check" ppr_br (ImpedanceMatching {}) = text "combining required constraints" ppr_br (NonLinearPatternOrigin _ pat) = hsep [text "a non-linear pattern" <+> quotes (ppr pat)] -ppr_br (ExpansionOrigin (ExprCtxt (HsOverLabel _ l))) = hsep [text "the overloaded label", quotes (char '#' <> ppr l)] -ppr_br (ExpansionOrigin (ExprCtxt (RecordUpd{}))) = text "a record update" -ppr_br (ExpansionOrigin (ExprCtxt (ExplicitList{}))) = text "an overloaded list" -ppr_br (ExpansionOrigin (ExprCtxt (HsIf{}))) = text "an if-then-else expression" -ppr_br (ExpansionOrigin (ExprCtxt e)) = text "an expression" <+> ppr e -ppr_br (ExpansionOrigin (StmtErrCtxt{})) = text "a do statement" -ppr_br (ExpansionOrigin (StmtErrCtxtPat{})) = text "a do statement" -ppr_br (ExpansionOrigin{}) = text "shouldn't happen ExpansionOrigin ppr_br" -ppr_br (ExpectedTySyntax o _) = ppr_br o -ppr_br (ExpectedFunTySyntaxOp{}) = text "a rebindable syntax operator" -ppr_br (ExpectedFunTyViewPat{}) = text "a view pattern" -ppr_br (ExpectedFunTyArg{}) = text "a funtion head" -ppr_br (ExpectedFunTyMatches{}) = text "a match statement" -ppr_br (ExpectedFunTyLam{}) = text "a lambda expression" -ppr_br (FRRRepPolyUnliftedNewtype{}) = text "a unlifted newtype" - pprNonLinearPatternReason :: HasDebugCallStack => NonLinearPatternReason -> SDoc pprNonLinearPatternReason LazyPatternReason = parens (text "non-variable lazy pattern aren't linear") @@ -1224,7 +1079,7 @@ data FixedRuntimeRepContext -- -- See 'ExpectedFunTyOrigin' for more details. | FRRExpectedFunTy - !CtOrigin + !ExpectedFunTyOrigin !Int -- ^ argument position (1-indexed) @@ -1311,7 +1166,7 @@ pprFixedRuntimeRepContext FRRBindStmtGuard pprFixedRuntimeRepContext (FRRArrow arrowContext) = pprFRRArrowContext arrowContext pprFixedRuntimeRepContext (FRRExpectedFunTy funTyOrig _) - = pprCtOrigin funTyOrig + = pprExpectedFunTyHerald funTyOrig pprFixedRuntimeRepContext (FRRDeepSubsumption is_exp pos mb_fun) = hsep [ text "The", what, text "type of the" , ppr (Argument pos) @@ -1537,15 +1392,136 @@ instance Outputable FRRArrowContext where ppr = pprFRRArrowContext -pprExpectedFunTyHerald :: CtOrigin -> SDoc +{- ********************************************************************* +* * + FixedRuntimeRep: ExpectedFunTy origin +* * +********************************************************************* -} + +-- | In what context are we calling 'matchExpectedFunTys' +-- or 'matchActualFunTy'? +-- +-- Used for two things: +-- +-- 1. Reporting error messages which explain that a function has been +-- given an unexpected number of arguments. +-- Uses 'pprExpectedFunTyHerald'. +-- See Note [Herald for matchExpectedFunTys] in GHC.Tc.Utils.Unify. +-- +-- 2. Reporting representation-polymorphism errors when a function argument +-- doesn't have a fixed RuntimeRep as per Note [Fixed RuntimeRep] +-- in GHC.Tc.Utils.Concrete. +-- Uses 'pprExpectedFunTyOrigin'. +-- See 'FixedRuntimeRepContext' for the situations in which +-- representation-polymorphism checks are performed. +data ExpectedFunTyOrigin + + -- | A rebindable syntax operator is expected to have a function type. + -- + -- Test cases for representation-polymorphism checks: + -- RepPolyDoBind, RepPolyDoBody{1,2}, RepPolyMc{Bind,Body,Guard}, RepPolyNPlusK + = forall (p :: Pass) + . (OutputableBndrId p) + => ExpectedFunTySyntaxOp !CtOrigin !(HsExpr (GhcPass p)) + -- ^ rebindable syntax operator + + -- | + | ExpectedTySyntax !CtOrigin !(HsExpr GhcRn) + + -- | A view pattern must have a function type. + -- + -- Test cases for representation-polymorphism checks: + -- RepPolyBinder + | ExpectedFunTyViewPat + !(HsExpr GhcRn) + -- ^ function used in the view pattern + + -- | Need to be able to extract an argument type from a function type. + -- + -- Test cases for representation-polymorphism checks: + -- RepPolyApp + | forall (p :: Pass) + . Outputable (HsExpr (GhcPass p)) => ExpectedFunTyArg + !TypedThing + -- ^ function + !(HsExpr (GhcPass p)) + -- ^ argument + + -- | Ensure that a function defined by equations indeed has a function type + -- with the appropriate number of arguments. + -- + -- Test cases for representation-polymorphism checks: + -- RepPolyBinder, RepPolyRecordPattern, RepPolyWildcardPattern + | ExpectedFunTyMatches + !TypedThing + -- ^ name of the function + !(MatchGroup GhcRn (LHsExpr GhcRn)) + -- ^ equations + + -- | Ensure that a lambda abstraction has a function type. + -- + -- Test cases for representation-polymorphism checks: + -- RepPolyLambda, RepPolyMatch + | ExpectedFunTyLam HsLamVariant + !(HsExpr GhcRn) + -- ^ the entire lambda-case expression + + -- | A partial application of the constructor of a representation-polymorphic + -- unlifted newtype in which the argument type does not have a fixed + -- runtime representation. + -- + -- Test cases: UnliftedNewtypesLevityBinder, UnliftedNewtypesCoerceFail. + | FRRRepPolyUnliftedNewtype !DataCon + +pprExpectedFunTyOrigin :: ExpectedFunTyOrigin + -> Int -- ^ argument position (starting at 1) + -> SDoc +pprExpectedFunTyOrigin funTy_origin i = + case funTy_origin of + ExpectedFunTySyntaxOp orig op -> + vcat [ sep [ the_arg_of + , text "the rebindable syntax operator" + , quotes (ppr op) ] + , nest 2 (ppr orig) ] + ExpectedTySyntax orig arg -> + vcat [ text "the expression" <+> quotes (ppr arg) + , nest 2 (ppr orig) ] + ExpectedFunTyViewPat expr -> + vcat [ the_arg_of <+> text "the view pattern" + , nest 2 (ppr expr) ] + ExpectedFunTyArg fun arg -> + sep [ text "The argument" + , quotes (ppr arg) + , text "of" + , quotes (ppr fun) ] + ExpectedFunTyMatches fun (MG { mg_alts = L _ alts }) + | null alts + -> the_arg_of <+> quotes (ppr fun) + | otherwise + -> text "The" <+> speakNth i <+> text "pattern in the equation" <> plural alts + <+> text "for" <+> quotes (ppr fun) + ExpectedFunTyLam lam_variant _ -> binder_of $ lamCaseKeyword lam_variant + FRRRepPolyUnliftedNewtype dc -> + vcat [ text "Unsaturated use of a representation-polymorphic unlifted newtype." + , text "The argument of the newtype constructor" <+> quotes (ppr dc) ] + where + the_arg_of :: SDoc + the_arg_of = text "The" <+> speakNth i <+> text "argument of" + + binder_of :: SDoc -> SDoc + binder_of what = text "The binder of the" <+> what <+> text "expression" + +pprExpectedFunTyHerald :: ExpectedFunTyOrigin -> SDoc pprExpectedFunTyHerald (ExpectedFunTySyntaxOp {}) = text "This rebindable syntax expects a function with" +pprExpectedFunTyHerald (ExpectedTySyntax orig _) + = pprCtOriginBriefly orig pprExpectedFunTyHerald (ExpectedFunTyViewPat {}) = text "A view pattern expression expects" pprExpectedFunTyHerald (ExpectedFunTyArg fun _) = sep [ text "The function" <+> quotes (ppr fun) , text "is applied to" ] -pprExpectedFunTyHerald (ExpectedFunTyMatches _ fun (MG { mg_alts = L _ alts })) +pprExpectedFunTyHerald (ExpectedFunTyMatches fun (MG { mg_alts = L _ alts })) = text "The equation" <> plural alts <+> text "for" <+> quotes (ppr fun) <+> hasOrHave alts pprExpectedFunTyHerald (ExpectedFunTyLam lam_variant expr) = sep [ text "The" <+> lamCaseKeyword lam_variant <+> text "expression" @@ -1554,7 +1530,6 @@ pprExpectedFunTyHerald (ExpectedFunTyLam lam_variant expr) , text "has" ] pprExpectedFunTyHerald (FRRRepPolyUnliftedNewtype dc) = text "The unlifted newtype" <+> quotes (ppr dc) <+> text "expects" -pprExpectedFunTyHerald orig = ppr (Shouldn'tHappenOrigin "pprExpectedFunTyHerald") <+> ppr orig {- ******************************************************************* * * ===================================== compiler/GHC/Tc/Types/Origin.hs-boot ===================================== @@ -5,6 +5,7 @@ import GHC.Utils.Misc ( HasDebugCallStack ) import {-# SOURCE #-} GHC.Core.TyCo.Rep ( Type ) data CtOrigin +data ExpectedFunTyOrigin data SkolemInfoAnon data SkolemInfo data FixedRuntimeRepContext ===================================== compiler/GHC/Tc/Utils/Unify.hs ===================================== @@ -139,7 +139,7 @@ import Data.Traversable (for) -- -- See Note [Return arguments with a fixed RuntimeRep]. matchActualFunTy - :: CtOrigin + :: ExpectedFunTyOrigin -- ^ See Note [Herald for matchExpectedFunTys] -> Maybe TypedThing -- ^ The thing with type TcSigmaType @@ -178,7 +178,7 @@ matchActualFunTy herald mb_thing err_info fun_ty go (FunTy { ft_af = af, ft_mult = w, ft_arg = arg_ty, ft_res = res_ty }) = assert (isVisibleFunArg af) $ - do { (arg_co, arg_ty) <- hasFixedRuntimeRep (FRRExpectedFunTy (updatePositionCtOrigin 1 herald) 1) arg_ty + do { (arg_co, arg_ty) <- hasFixedRuntimeRep (FRRExpectedFunTy herald 1) arg_ty ; let fun_co = mkFunCo Nominal af (mkReflCo Nominal w) arg_co @@ -249,7 +249,7 @@ Ugh! -- INVARIANT: the returned argument types all have a syntactically fixed RuntimeRep -- in the sense of Note [Fixed RuntimeRep] in GHC.Tc.Utils.Concrete. -- See Note [Return arguments with a fixed RuntimeRep]. -matchActualFunTys :: CtOrigin -- ^ See Note [Herald for matchExpectedFunTys] +matchActualFunTys :: ExpectedFunTyOrigin -- ^ See Note [Herald for matchExpectedFunTys] -> CtOrigin -> Arity -> TcSigmaType @@ -793,7 +793,7 @@ Example: -- in the sense of Note [Fixed RuntimeRep] in GHC.Tc.Utils.Concrete. -- See Note [Return arguments with a fixed RuntimeRep]. matchExpectedFunTys :: forall a. - CtOrigin -- See Note [Herald for matchExpectedFunTys] + ExpectedFunTyOrigin -- See Note [Herald for matchExpectedFunTys] -> UserTypeCtxt -> VisArity -> ExpSigmaType @@ -875,7 +875,7 @@ matchExpectedFunTys herald ctx arity (Check top_ty) thing_inside , ft_arg = arg_ty, ft_res = res_ty }) = assert (isVisibleFunArg af) $ do { let arg_pos = arity - n_req + 1 -- 1 for the first argument etc - ; (arg_co, arg_ty_frr) <- hasFixedRuntimeRep (FRRExpectedFunTy (updatePositionCtOrigin arg_pos herald) arg_pos) arg_ty + ; (arg_co, arg_ty_frr) <- hasFixedRuntimeRep (FRRExpectedFunTy herald arg_pos) arg_ty ; let scaled_arg_ty_frr = Scaled mult arg_ty_frr ; (res_wrap, result) <- check (n_req - 1) (mkCheckExpFunPatTy scaled_arg_ty_frr : rev_pat_tys) @@ -947,19 +947,19 @@ matchExpectedFunTys herald ctx arity (Check top_ty) thing_inside ; co <- unifyType Nothing (mkScaledFunTys more_arg_tys res_ty) fun_ty ; return (mkWpCastN co, result) } -new_infer_arg_ty :: CtOrigin -> Int -> TcM (Scaled ExpRhoTypeFRR) +new_infer_arg_ty :: ExpectedFunTyOrigin -> Int -> TcM (Scaled ExpRhoTypeFRR) new_infer_arg_ty herald arg_pos -- position for error messages only = do { mult <- newFlexiTyVarTy multiplicityTy - ; inf_hole <- newInferExpTypeFRR IIF_DeepRho (FRRExpectedFunTy (updatePositionCtOrigin arg_pos herald) arg_pos) + ; inf_hole <- newInferExpTypeFRR IIF_DeepRho (FRRExpectedFunTy herald arg_pos) ; return (mkScaled mult inf_hole) } -new_check_arg_ty :: CtOrigin -> Int -> TcM (Scaled TcType) +new_check_arg_ty :: ExpectedFunTyOrigin -> Int -> TcM (Scaled TcType) new_check_arg_ty herald arg_pos -- Position for error messages only, 1 for first arg = do { mult <- newFlexiTyVarTy multiplicityTy - ; arg_ty <- newOpenFlexiFRRTyVarTy (FRRExpectedFunTy (updatePositionCtOrigin arg_pos herald) arg_pos) + ; arg_ty <- newOpenFlexiFRRTyVarTy (FRRExpectedFunTy herald arg_pos) ; return (mkScaled mult arg_ty) } -mkFunTysMsg :: CtOrigin +mkFunTysMsg :: ExpectedFunTyOrigin -> (VisArity, TcType) -> ErrCtxtMsg -- See Note [Reporting application arity errors] View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/f9ab1b23f2e2611bfd0a2a5d6c5fd77… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/f9ab1b23f2e2611bfd0a2a5d6c5fd77… You're receiving this email because of your account on gitlab.haskell.org.

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[Git][ghc/ghc][wip/andreask/ghc_par] Fix an issue with dependency analysis with boot files
by Andreas Klebinger (＠AndreasK) 08 Mar '26

08 Mar '26

Andreas Klebinger pushed to branch wip/andreask/ghc_par at Glasgow Haskell Compiler / GHC Commits: ec5be442 by Andreas Klebinger at 2026-03-08T17:53:50+00:00 Fix an issue with dependency analysis with boot files - - - - - 1 changed file: - compiler/GHC/Core/Opt/Split.hs Changes: ===================================== compiler/GHC/Core/Opt/Split.hs ===================================== @@ -10,16 +10,18 @@ import GHC.Prelude hiding ( head, init, last ) import GHC.Core import GHC.Core.FVs import GHC.Core.Opt.OccurAnal (occurAnalyseCompUnit) +import GHC.Core.Stats (coreBindsSize) import GHC.Data.Graph.Directed (SCC(..), Node(..), stronglyConnCompFromEdgedVerticesUniq) import GHC.Data.Maybe (orElse) import GHC.Types.Unique.Set -import GHC.Types.Name (isExternalName, nameModule) -import GHC.Types.Id (realIdUnfolding) +import GHC.Types.Name (Name, isExternalName, nameModule) +import GHC.Types.Id (isDFunId, realIdUnfolding) import GHC.Types.Var.Set import GHC.Types.Var.Env import GHC.Types.Var +import GHC.Types.Name.Env import GHC.Utils.Outputable import GHC.Utils.Panic @@ -100,25 +102,40 @@ bindSplitFreeVars :: VarSet -> CoreBind -> VarSet bindSplitFreeVars local_top_bndrs bind = close_over_imported_unfoldings (bindMentionedVars bind `unionVarSet` bindBndrInfoVars bind) where + local_name_env :: NameEnv Var + local_name_env = mkNameEnv [ (varName v, v) | v <- nonDetEltsUniqSet local_top_bndrs ] + close_over_imported_unfoldings fvs = go emptyVarSet fvs go !seen !fvs = case pick_new_import (fvs `minusVarSet` seen) of Nothing -> fvs Just v -> - let unfolding_fvs = unfoldingRefs v + let unfolding_fvs = localizeLocalRefs (unfoldingRefs v) local_unfolding_fvs = unfolding_fvs `intersectVarSet` local_top_bndrs in go (extendVarSet seen v) (fvs `unionVarSet` local_unfolding_fvs `unionVarSet` unfolding_fvs) pick_new_import vars = find pickable (nonDetEltsUniqSet vars) - pickable v = isId v && not (v `elemVarSet` local_top_bndrs) + pickable v = isId v && isDFunId v && not (v `elemVarSet` local_top_bndrs) unfoldingRefs v = - case maybeUnfoldingTemplate (realIdUnfolding v) of - Just rhs -> exprSomeFreeVars (const True) rhs - Nothing -> emptyVarSet + case realIdUnfolding v of + BootUnfolding -> emptyVarSet + unf -> + case maybeUnfoldingTemplate unf of + Just rhs -> exprSomeFreeVars (const True) rhs + Nothing -> emptyVarSet + + localizeLocalRefs :: VarSet -> VarSet + localizeLocalRefs vars = mkVarSet (map localizeVar (nonDetEltsUniqSet vars)) + + localizeVar :: Var -> Var + localizeVar v = + case lookupNameEnv local_name_env (varName v) of + Just local_v -> local_v + Nothing -> v bindMentionedVars :: CoreBind -> VarSet bindMentionedVars (NonRec _ rhs) = exprSomeFreeVars (const True) rhs @@ -219,8 +236,10 @@ pprVarWithModule v splitCompUnit :: Module -> [CoreRule] -> CoreCompUnit -> ([CoreCompUnit], [CoreRule]) splitCompUnit this_module imp_rules unit = let comp_units = map mk_comp_unit components_with_rules - in checkNameClashes comp_units `seq` - (comp_units, rules_for_imps ++ rules_without_component) + result = (comp_units, rules_for_imps ++ rules_without_component) + in -- pprTrace "CoreSplitTrace" (pprSplitTrace comp_units) $ + checkNameClashes comp_units `seq` + result where CoreCompUnit occ_binds unit_rules = occurAnalyseCompUnit this_module (const True) (const True) imp_rules unit @@ -269,3 +288,24 @@ checkNameClashes comp_units go seen (b:bs) | b `elemVarSet` seen = b : go seen bs | otherwise = go (extendVarSet seen b) bs + +pprSplitTrace :: [CoreCompUnit] -> SDoc +pprSplitTrace comp_units = + text (show (length comp_units)) + <+> text "Unit; CoreSizes:" + <+> pprIntList sizes + <> semi + <+> text "RelativeSize:" + <+> pprPercentList rel_sizes + where + sizes = map (coreBindsSize . coreCompUnitBinds) comp_units + total_size = sum sizes + rel_sizes + | total_size == 0 = replicate (length sizes) 0 + | otherwise = map (\sz -> (100 * sz) `div` total_size) sizes + +pprIntList :: [Int] -> SDoc +pprIntList xs = brackets (hcat (punctuate comma (map int xs))) + +pprPercentList :: [Int] -> SDoc +pprPercentList xs = brackets (hcat (punctuate comma [ int x <> char '%' | x <- xs ])) View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/ec5be4425b0ee8c19f4a817d36236bd… -- View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/ec5be4425b0ee8c19f4a817d36236bd… You're receiving this email because of your account on gitlab.haskell.org.

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