September 2016 - ghc-tickets

[GHC] #12649: Allow TypeApplications syntax to be used to instantiate type variables in SPECIALISE pragmas
by GHC 02 Oct '16

02 Oct '16

#12649: Allow TypeApplications syntax to be used to instantiate type variables in SPECIALISE pragmas -------------------------------------+------------------------------------- Reporter: bgamari | Owner: Type: feature | Status: new request | Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Currently the `SPECIALISE` pragma requires that the user repeat the entire type of a binding to instantiate its types. This is often needlessly verbose and quite tiresome. Instead, why not allow the user to write the desired type as an application with `TypeApplications`? For instance, currently we might write, {{{#!hs foldWithOptionsAndParser :: forall m params. ( MonadIO m, MonadMask m, ToRow params ) => FoldOptions -> RowParser row -> Connection -> Query -> params -> a -> (a -> row -> m a) -> m a foldWithOptionsAndParser opts parser conn template qs a f = ... {-# SPECIALISE foldWithOptionsAndParser :: FoldOptions -> RowParser row -> Connection -> Query -> params -> a -> (a -> row -> IO a) -> IO a #-} }}} Instead we might want to write, {{{#!hs {-# SPECIALISE foldWithOptionsAndParser @IO #-} }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12649> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #12597: -Wmissing-signatures uses forall even when invalid in source
by GHC 01 Oct '16

01 Oct '16

#12597: -Wmissing-signatures uses forall even when invalid in source -------------------------------------+------------------------------------- Reporter: nomeata | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- The `-Wmissing-signatures` warning is great to learn about the signatures that things should have, and is especially useful when teaching Haskell to beginners. Unfortunately, it uses explicit quantification (`forall`) even when in the compiled module, this is not valid: {{{ $ echo 'foo x = x' > Foo.hs $ ghci -Wall Foo.hs GHCi, version 8.0.1: http://www.haskell.org/ghc/ :? for help [1 of 1] Compiling Main ( Foo.hs, interpreted ) Foo.hs:1:1: warning: [-Wmissing-signatures] Top-level binding with no type signature: foo :: forall t. t -> t Ok, modules loaded: Main. *Main> $ echo -e 'foo :: forall t. t -> t\nfoo x = x' > Foo.hs $ ghci -Wall Foo.hs GHCi, version 8.0.1: http://www.haskell.org/ghc/ :? for help [1 of 1] Compiling Main ( Foo.hs, interpreted ) Foo.hs:1:16: error: Illegal symbol '.' in type Perhaps you intended to use RankNTypes or a similar language extension to enable explicit-forall syntax: forall <tvs>. <type> Failed, modules loaded: none. }}} The type signature provided by `-Wmissing-signatures` should be in a form that is valid in the context of the function that is missing the signature. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12597> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #12595: Linker failure: multiple definition of
by GHC 01 Oct '16

01 Oct '16

#12595: Linker failure: multiple definition of -------------------------------------+------------------------------------- Reporter: | Owner: MikolajKonarski | Type: bug | Status: new Priority: high | Milestone: 8.0.2 Component: Compiler | Version: 8.0.1 Keywords: | Operating System: Linux Architecture: x86_64 | Type of failure: GHC rejects (amd64) | valid program Test Case: | Blocked By: Blocking: | Related Tickets: #10531 Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Linker fails on a normal project built with cabal (-O1), both on my home machine (GNU gold (GNU Binutils for Ubuntu 2.22) 1.11) and on travis with GHC 8.0.1: https://travis-ci.org/LambdaHack/LambdaHack/jobs/159457149#L589 and with head: https://travis-ci.org/LambdaHack/LambdaHack/jobs/159457156#L602 It compiles fine with -O0 (but if fails with -O2): https://travis-ci.org/LambdaHack/LambdaHack/jobs/159457144 with older GHCs: https://travis-ci.org/LambdaHack/LambdaHack/jobs/159457155 and after the symbol the linker complains about is removed: https://travis-ci.org/LambdaHack/LambdaHack/jobs/159506870 As seen on travis, the way to reproduce it is just cabal install of https://github.com/LambdaHack/LambdaHack/commit/0d2bbd6eadca7a10292ab67ab1f… which also shows the offending line. I took the liberty of adding it to 8.0.2 milestone, because if it affects all x86_64 machines, it's pretty serious. Please feel free to downgrade. If the bug is confirmed, I can attempt creating a small reproducing case, but it would require gtk, so it would compile forever anyway. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12595> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #11987: Allow record wildcards with pattern synonyms
by GHC 01 Oct '16

01 Oct '16

#11987: Allow record wildcards with pattern synonyms -------------------------------------+------------------------------------- Reporter: Iceland_jack | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.1 Keywords: | Operating System: Unknown/Multiple PatternSynonyms | Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- With pattern synonym `pattern Point {x, y} = (x, y)` we can write {{{ >>> let { x = 1; y = 2 } in Point { x = x, y = y } (1, 2) }}} {{{ >>> let { x = 1; y = 2 } in Point { x, y } (1, 2) }}} but record wildcards ain't workin {{{#!hs >>> let { x = 1; y = 2 } in Point {..} <interactive>:342:25-36: error: Pattern synonym ‘Point’ used as a data constructor }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11987> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #12609: unused-top-binds wrongly warns about underscore-prefixed field names when DuplicateRecordFields enabled
by GHC 01 Oct '16

01 Oct '16

#12609: unused-top-binds wrongly warns about underscore-prefixed field names when DuplicateRecordFields enabled -------------------------------------+------------------------------------- Reporter: jml | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Given this code: {{{#!hs module Main (main) where data Foo = Foo { _foo :: String , _bar :: String } deriving (Eq, Show) main :: IO () main = do let x = Foo "apple" "bear" putStrLn $ "x = " ++ show x }}} Saved as `unused-fields.hs` Then with ghc 8.0.1: {{{ $ ghc --version The Glorious Glasgow Haskell Compilation System, version 8.0.1 }}} The following command will compile without error or warning: {{{ $ ghc -Wall -Werror -o unused-fields ./unused-fields.hs }}} But if `DuplicateRecordFields` is enabled, then: {{{ $ ghc -Wall -Werror -o unused-fields ./unused-fields.hs -XDuplicateRecordFields [1 of 1] Compiling Main ( unused-fields.hs, unused-fields.o ) [flags changed] unused-fields.hs:21:11: warning: [-Wunused-top-binds] Defined but not used: ‘_foo’ unused-fields.hs:22:11: warning: [-Wunused-top-binds] Defined but not used: ‘_bar’ <no location info>: error: Failing due to -Werror. }}} I would have no warnings, since `_foo` and `_bar` have underscore prefixes, which is a documented way of selectively disabling this warning. (c.f. https://downloads.haskell.org/~ghc/latest/docs/html/users_guide /using-warnings.html#ghc-flag--Wunused-top-binds). Details requested by https://ghc.haskell.org/trac/ghc/wiki/ReportABug: {{{ $ gcc --version Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1 Apple LLVM version 8.0.0 (clang-800.0.38) Target: x86_64-apple-darwin15.6.0 Thread model: posix InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin }}} GOOD (without -XDuplicateRecordFields) {{{ $ ghc -dcore-lint -v -Wall -Werror -o unused-fields ./unused-fields.hs Glasgow Haskell Compiler, Version 8.0.1, stage 2 booted by GHC version 7.10.3 Using binary package database: /nix/store/vvn40k4257a2f6dlps52jnff6qa41ph3-ghc-8.0.1/lib/ghc-8.0.1/package.conf.d/package.cache loading package database /nix/store/vvn40k4257a2f6dlps52jnff6qa41ph3-ghc-8.0.1/lib/ghc-8.0.1/package.conf.d wired-in package ghc-prim mapped to ghc-prim-0.5.0.0 wired-in package integer-gmp mapped to integer-gmp-1.0.0.1 wired-in package base mapped to base-4.9.0.0 wired-in package rts mapped to rts wired-in package template-haskell mapped to template-haskell-2.11.0.0 wired-in package ghc mapped to ghc-8.0.1 wired-in package dph-seq not found. wired-in package dph-par not found. Hsc static flags: loading package database /nix/store/vvn40k4257a2f6dlps52jnff6qa41ph3-ghc-8.0.1/lib/ghc-8.0.1/package.conf.d wired-in package ghc-prim mapped to ghc-prim-0.5.0.0 wired-in package integer-gmp mapped to integer-gmp-1.0.0.1 wired-in package base mapped to base-4.9.0.0 wired-in package rts mapped to rts-1.0 wired-in package template-haskell mapped to template-haskell-2.11.0.0 wired-in package ghc mapped to ghc-8.0.1 wired-in package dph-seq not found. wired-in package dph-par not found. *** Chasing dependencies: Chasing modules from: *unused-fields.hs !!! Chasing dependencies: finished in 0.68 milliseconds, allocated 0.777 megabytes Stable obj: [Main] Stable BCO: [] Ready for upsweep [NONREC ModSummary { ms_hs_date = 2016-09-22 08:27:24 UTC ms_mod = Main, ms_textual_imps = [(Nothing, Prelude)] ms_srcimps = [] }] *** Deleting temp files: Deleting: compile: input file unused-fields.hs *** Checking old interface for Main: [1 of 1] Skipping Main ( unused-fields.hs, unused-fields.o ) Upsweep completely successful. *** Deleting temp files: Deleting: link: linkables are ... LinkableM (2016-09-22 08:45:48 UTC) Main [DotO unused-fields.o] Linking unused-fields ... Created temporary directory: /var/folders/6q/jpykk8bn6dq68ynzm6c1r7c40000gn/T/ghc62639_0 *** C Compiler: /nix/store/a5f6qqgzgmmvw0xkvlfdsjzaprmnlz2s-clang-wrapper-3.7.1/bin/cc -m64 -fno-stack-protector -DTABLES_NEXT_TO_CODE -c /var/folders/6q/jpykk8bn6dq68ynzm6c1r7c40000gn/T/ghc62639_0/ghc_1.c -o /var/folders/6q/jpykk8bn6dq68ynzm6c1r7c40000gn/T/ghc62639_0/ghc_2.o -fno- common -U__PIC__ -D__PIC__ -I/nix/store/vvn40k4257a2f6dlps52jnff6qa41ph3-ghc-8.0.1/lib/ghc-8.0.1/include *** Linker: /nix/store/a5f6qqgzgmmvw0xkvlfdsjzaprmnlz2s-clang-wrapper-3.7.1/bin/cc -m64 -fno-stack-protector -DTABLES_NEXT_TO_CODE -m64 -o unused-fields -Wl,-no_compact_unwind unused-fields.o -L/nix/store/vvn40k4257a2f6dlps52jnff6qa41ph3-ghc-8.0.1/lib/ghc-8.0.1/base-4.9.0.0 -L/nix/store/8dkzvp7d7vpprc8cblmjcyyyzyy9940i-libiconv-osx-10.9.5/lib -L/nix/store/vvn40k4257a2f6dlps52jnff6qa41ph3-ghc-8.0.1/lib/ghc-8.0.1 /integer-gmp-1.0.0.1 -L/nix/store/8b7big21k9ipi44mqlnp8njbkncwhh27-gmp-6.1.0/lib -L/nix/store/vvn40k4257a2f6dlps52jnff6qa41ph3-ghc-8.0.1/lib/ghc-8.0.1/ghc- prim-0.5.0.0 -L/nix/store/vvn40k4257a2f6dlps52jnff6qa41ph3-ghc-8.0.1/lib/ghc-8.0.1/rts /var/folders/6q/jpykk8bn6dq68ynzm6c1r7c40000gn/T/ghc62639_0/ghc_2.o -Wl,-u,_ghczmprim_GHCziTypes_Izh_static_info -Wl,-u,_ghczmprim_GHCziTypes_Czh_static_info -Wl,-u,_ghczmprim_GHCziTypes_Fzh_static_info -Wl,-u,_ghczmprim_GHCziTypes_Dzh_static_info -Wl,-u,_base_GHCziPtr_Ptr_static_info -Wl,-u,_ghczmprim_GHCziTypes_Wzh_static_info -Wl,-u,_base_GHCziInt_I8zh_static_info -Wl,-u,_base_GHCziInt_I16zh_static_info -Wl,-u,_base_GHCziInt_I32zh_static_info -Wl,-u,_base_GHCziInt_I64zh_static_info -Wl,-u,_base_GHCziWord_W8zh_static_info -Wl,-u,_base_GHCziWord_W16zh_static_info -Wl,-u,_base_GHCziWord_W32zh_static_info -Wl,-u,_base_GHCziWord_W64zh_static_info -Wl,-u,_base_GHCziStable_StablePtr_static_info -Wl,-u,_ghczmprim_GHCziTypes_Izh_con_info -Wl,-u,_ghczmprim_GHCziTypes_Czh_con_info -Wl,-u,_ghczmprim_GHCziTypes_Fzh_con_info -Wl,-u,_ghczmprim_GHCziTypes_Dzh_con_info -Wl,-u,_base_GHCziPtr_Ptr_con_info -Wl,-u,_base_GHCziPtr_FunPtr_con_info -Wl,-u,_base_GHCziStable_StablePtr_con_info -Wl,-u,_ghczmprim_GHCziTypes_False_closure -Wl,-u,_ghczmprim_GHCziTypes_True_closure -Wl,-u,_base_GHCziPack_unpackCString_closure -Wl,-u,_base_GHCziIOziException_stackOverflow_closure -Wl,-u,_base_GHCziIOziException_heapOverflow_closure -Wl,-u,_base_ControlziExceptionziBase_nonTermination_closure -Wl,-u,_base_GHCziIOziException_blockedIndefinitelyOnMVar_closure -Wl,-u,_base_GHCziIOziException_blockedIndefinitelyOnSTM_closure -Wl,-u,_base_GHCziIOziException_allocationLimitExceeded_closure -Wl,-u,_base_ControlziExceptionziBase_nestedAtomically_closure -Wl,-u,_base_GHCziEventziThread_blockedOnBadFD_closure -Wl,-u,_base_GHCziWeak_runFinalizzerBatch_closure -Wl,-u,_base_GHCziTopHandler_flushStdHandles_closure -Wl,-u,_base_GHCziTopHandler_runIO_closure -Wl,-u,_base_GHCziTopHandler_runNonIO_closure -Wl,-u,_base_GHCziConcziIO_ensureIOManagerIsRunning_closure -Wl,-u,_base_GHCziConcziIO_ioManagerCapabilitiesChanged_closure -Wl,-u,_base_GHCziConcziSync_runSparks_closure -Wl,-u,_base_GHCziConcziSignal_runHandlersPtr_closure -Wl,-search_paths_first -lHSbase-4.9.0.0 -lHSinteger-gmp-1.0.0.1 -lHSghc- prim-0.5.0.0 -lHSrts -lCffi -liconv -lgmp -lm -ldl link: done *** Deleting temp files: Deleting: /var/folders/6q/jpykk8bn6dq68ynzm6c1r7c40000gn/T/ghc62639_0/ghc_2.o /var/folders/6q/jpykk8bn6dq68ynzm6c1r7c40000gn/T/ghc62639_0/ghc_1.c *** Deleting temp dirs: Deleting: /var/folders/6q/jpykk8bn6dq68ynzm6c1r7c40000gn/T/ghc62639_0 }}} BAD {{{ $ ghc -dcore-lint -v -Wall -Werror -o unused-fields ./unused-fields.hs -XDuplicateRecordFields Glasgow Haskell Compiler, Version 8.0.1, stage 2 booted by GHC version 7.10.3 Using binary package database: /nix/store/vvn40k4257a2f6dlps52jnff6qa41ph3-ghc-8.0.1/lib/ghc-8.0.1/package.conf.d/package.cache loading package database /nix/store/vvn40k4257a2f6dlps52jnff6qa41ph3-ghc-8.0.1/lib/ghc-8.0.1/package.conf.d wired-in package ghc-prim mapped to ghc-prim-0.5.0.0 wired-in package integer-gmp mapped to integer-gmp-1.0.0.1 wired-in package base mapped to base-4.9.0.0 wired-in package rts mapped to rts wired-in package template-haskell mapped to template-haskell-2.11.0.0 wired-in package ghc mapped to ghc-8.0.1 wired-in package dph-seq not found. wired-in package dph-par not found. Hsc static flags: loading package database /nix/store/vvn40k4257a2f6dlps52jnff6qa41ph3-ghc-8.0.1/lib/ghc-8.0.1/package.conf.d wired-in package ghc-prim mapped to ghc-prim-0.5.0.0 wired-in package integer-gmp mapped to integer-gmp-1.0.0.1 wired-in package base mapped to base-4.9.0.0 wired-in package rts mapped to rts-1.0 wired-in package template-haskell mapped to template-haskell-2.11.0.0 wired-in package ghc mapped to ghc-8.0.1 wired-in package dph-seq not found. wired-in package dph-par not found. *** Chasing dependencies: Chasing modules from: *unused-fields.hs !!! Chasing dependencies: finished in 1.05 milliseconds, allocated 0.777 megabytes Stable obj: [Main] Stable BCO: [] Ready for upsweep [NONREC ModSummary { ms_hs_date = 2016-09-22 08:27:24 UTC ms_mod = Main, ms_textual_imps = [(Nothing, Prelude)] ms_srcimps = [] }] *** Deleting temp files: Deleting: compile: input file unused-fields.hs *** Checking old interface for Main: [1 of 1] Compiling Main ( unused-fields.hs, unused-fields.o ) [flags changed] *** Parser [Main]: !!! Parser [Main]: finished in 1.27 milliseconds, allocated 0.517 megabytes *** Renamer/typechecker [Main]: !!! Renamer/typechecker [Main]: finished in 128.27 milliseconds, allocated 49.950 megabytes *** Desugar [Main]: Result size of Desugar (after optimization) = {terms: 141, types: 94, coercions: 0} *** Core Linted result of Desugar (after optimization): !!! Desugar [Main]: finished in 5.14 milliseconds, allocated 1.194 megabytes unused-fields.hs:22:11: warning: [-Wunused-top-binds] Defined but not used: ‘_foo’ unused-fields.hs:23:11: warning: [-Wunused-top-binds] Defined but not used: ‘_bar’ <no location info>: error: Failing due to -Werror. Upsweep partially successful. *** Deleting temp files: Deleting: link(batch): upsweep (partially) failed OR Main.main not exported; not linking. *** Deleting temp files: Deleting: *** Deleting temp dirs: Deleting: }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12609> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #12621: zeromq4-haskell fails on PowerPC 64-bit
by GHC 01 Oct '16

01 Oct '16

#12621: zeromq4-haskell fails on PowerPC 64-bit ---------------------------------+--------------------------------------- Reporter: trommler | Owner: trommler Type: bug | Status: new Priority: normal | Milestone: 8.0.3 Component: Compiler | Version: 8.0.1 Keywords: | Operating System: Linux Architecture: powerpc64 | Type of failure: Compile-time crash Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: ---------------------------------+--------------------------------------- Building zeromq4-haskell from Hackage: {{{ [ 69s] [1 of 6] Compiling System.ZMQ4.Internal.Base ( dist/build/System/ZMQ4/Internal/Base.hs, dist/build/System/ZMQ4/Internal/Base.o ) [ 73s] /tmp/ghc1837_0/ghc_9.s: Assembler messages: [ 73s] [ 73s] /tmp/ghc1837_0/ghc_9.s:2619:0: [ 73s] Error: operand out of domain (2 is not a multiple of 4) [ 73s] [ 73s] <no location info>: ghc: phase `Assembler' failed (exitcode = 1) }}} I think I know what's going on and I'll post a patch to Phabricator shortly. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12621> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #11792: Optimised unsafe FFI call can get wrong argument
by GHC 01 Oct '16

01 Oct '16

#11792: Optimised unsafe FFI call can get wrong argument -------------------------------------+------------------------------------- Reporter: Szunti | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.3 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: Incorrect result Unknown/Multiple | at runtime Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Attached a simple test case. It should print 7457, but the C function is called with 0 as the third argument. If I compile with -O0 or omit the unsafe keyword in the FFI import it works as it should. In gdb disassembly looks to me as edx (the place for third argument on 64-bit) is set to 7457, then the opaquify is inlined, but it doesn't preserve edx and then third_arg is called with the zeroed edx. ---------------- Specs ------------- 64-bit Archlinux with arch-haskell repo gcc -v: {{{ Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-unknown-linux-gnu/5.3.0/lto- wrapper Target: x86_64-unknown-linux-gnu Configured with: /build/gcc-multilib/src/gcc-5-20160209/configure --prefix=/usr --libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man --infodir=/usr/share/info --with- bugurl=https://bugs.archlinux.org/ --enable- languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared --enable- threads=posix --enable-libmpx --with-system-zlib --with-isl --enable- __cxa_atexit --disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object --enable-linker-build-id --enable-lto --enable-plugin --enable-install- libiberty --with-linker-hash-style=gnu --enable-gnu-indirect-function --enable-multilib --disable-werror --enable-checking=release Thread model: posix gcc version 5.3.0 (GCC) }}} ghc compile output: {{{ Glasgow Haskell Compiler, Version 7.10.3, stage 2 booted by GHC version 7.10.3 Using binary package database: /usr/lib/ghc-7.10.3/package.conf.d/package.cache wired-in package ghc-prim mapped to ghc- prim-0.4.0.0-6cdc86811872333585fa98756aa7c51e wired-in package integer-gmp mapped to integer- gmp-1.0.0.0-3c8c40657a9870f5c33be17496806d8d wired-in package base mapped to base-4.8.2.0-0d6d1084fbc041e1cded9228e80e264d wired-in package rts mapped to builtin_rts wired-in package template-haskell mapped to template- haskell-2.10.0.0-3c4cb52230f347282af9b2817f013181 wired-in package ghc mapped to ghc-7.10.3-3a39f8f970ff545623196002970730d1 wired-in package dph-seq not found. wired-in package dph-par not found. Hsc static flags: wired-in package ghc-prim mapped to ghc- prim-0.4.0.0-6cdc86811872333585fa98756aa7c51e wired-in package integer-gmp mapped to integer- gmp-1.0.0.0-3c8c40657a9870f5c33be17496806d8d wired-in package base mapped to base-4.8.2.0-0d6d1084fbc041e1cded9228e80e264d wired-in package rts mapped to builtin_rts wired-in package template-haskell mapped to template- haskell-2.10.0.0-3c4cb52230f347282af9b2817f013181 wired-in package ghc mapped to ghc-7.10.3-3a39f8f970ff545623196002970730d1 wired-in package dph-seq not found. wired-in package dph-par not found. *** Chasing dependencies: Chasing modules from: *Main.hs Stable obj: [] Stable BCO: [] Ready for upsweep [NONREC ModSummary { ms_hs_date = 2016-04-05 14:24:20.801997492 UTC ms_mod = Main, ms_textual_imps = [import (implicit) Prelude, import Data.Word] ms_srcimps = [] }] *** Deleting temp files: Deleting: compile: input file Main.hs Created temporary directory: /tmp/ghc1541_0 *** Checking old interface for Main: [1 of 1] Compiling Main ( Main.hs, Main.o ) *** Parser: *** Renamer/typechecker: *** Desugar: Result size of Desugar (after optimization) = {terms: 317, types: 387, coercions: 3} *** Core Linted result of Desugar (after optimization): *** Simplifier: Result size of Simplifier iteration=1 = {terms: 261, types: 290, coercions: 14} *** Core Linted result of Simplifier: Result size of Simplifier iteration=2 = {terms: 216, types: 262, coercions: 18} *** Core Linted result of Simplifier: Result size of Simplifier = {terms: 216, types: 262, coercions: 18} *** Core Linted result of Simplifier: *** Specialise: Result size of Specialise = {terms: 216, types: 262, coercions: 18} *** Core Linted result of Specialise: *** Float out(FOS {Lam = Just 0, Consts = True, OverSatApps = False}): Result size of Float out(FOS {Lam = Just 0, Consts = True, OverSatApps = False}) = {terms: 274, types: 305, coercions: 18} *** Core Linted result of Float out(FOS {Lam = Just 0, Consts = True, OverSatApps = False}): *** Simplifier: Result size of Simplifier iteration=1 = {terms: 407, types: 388, coercions: 70} *** Core Linted result of Simplifier: Result size of Simplifier iteration=2 = {terms: 463, types: 375, coercions: 25} *** Core Linted result of Simplifier: Result size of Simplifier = {terms: 430, types: 362, coercions: 25} *** Core Linted result of Simplifier: *** Simplifier: Result size of Simplifier iteration=1 = {terms: 426, types: 363, coercions: 25} *** Core Linted result of Simplifier: Result size of Simplifier = {terms: 426, types: 363, coercions: 25} *** Core Linted result of Simplifier: *** Simplifier: Result size of Simplifier iteration=1 = {terms: 310, types: 291, coercions: 25} *** Core Linted result of Simplifier: Result size of Simplifier iteration=2 = {terms: 248, types: 217, coercions: 25} *** Core Linted result of Simplifier: Result size of Simplifier iteration=3 = {terms: 336, types: 242, coercions: 25} *** Core Linted result of Simplifier: Result size of Simplifier = {terms: 336, types: 242, coercions: 25} *** Core Linted result of Simplifier: *** Float inwards: Result size of Float inwards = {terms: 336, types: 242, coercions: 25} *** Core Linted result of Float inwards: *** Called arity analysis: Result size of Called arity analysis = {terms: 336, types: 242, coercions: 25} *** Core Linted result of Called arity analysis: *** Simplifier: Result size of Simplifier = {terms: 336, types: 242, coercions: 25} *** Core Linted result of Simplifier: *** Demand analysis: Result size of Demand analysis = {terms: 336, types: 242, coercions: 25} *** Core Linted result of Demand analysis: *** Worker Wrapper binds: Result size of Worker Wrapper binds = {terms: 369, types: 283, coercions: 25} *** Core Linted result of Worker Wrapper binds: *** Simplifier: Result size of Simplifier iteration=1 = {terms: 354, types: 266, coercions: 25} *** Core Linted result of Simplifier: Result size of Simplifier = {terms: 354, types: 266, coercions: 25} *** Core Linted result of Simplifier: *** Float out(FOS {Lam = Just 0, Consts = True, OverSatApps = True}): Result size of Float out(FOS {Lam = Just 0, Consts = True, OverSatApps = True}) = {terms: 356, types: 267, coercions: 25} *** Core Linted result of Float out(FOS {Lam = Just 0, Consts = True, OverSatApps = True}): *** Common sub-expression: Result size of Common sub-expression = {terms: 356, types: 267, coercions: 25} *** Core Linted result of Common sub-expression: *** Float inwards: Result size of Float inwards = {terms: 356, types: 267, coercions: 25} *** Core Linted result of Float inwards: *** Simplifier: Result size of Simplifier = {terms: 356, types: 267, coercions: 25} *** Core Linted result of Simplifier: *** Tidy Core: Result size of Tidy Core = {terms: 356, types: 267, coercions: 25} *** Core Linted result of Tidy Core: writeBinIface: 18 Names writeBinIface: 81 dict entries *** CorePrep: Result size of CorePrep = {terms: 654, types: 379, coercions: 25} *** Core Linted result of CorePrep: *** Stg2Stg: *** CodeGen: *** Assembler: /usr/bin/gcc -fno-stack-protector -DTABLES_NEXT_TO_CODE -I. -x assembler -c /tmp/ghc1541_0/ghc_2.s -o Main.o Upsweep completely successful. *** Deleting temp files: Deleting: /tmp/ghc1541_0/ghc_3.c /tmp/ghc1541_0/ghc_2.s /tmp/ghc1541_0/ghc_1.s Warning: deleting non-existent /tmp/ghc1541_0/ghc_3.c Warning: deleting non-existent /tmp/ghc1541_0/ghc_1.s link: linkables are ... LinkableM (2016-04-05 15:42:11.288210053 UTC) Main [DotO Main.o] Linking Main ... *** C Compiler: /usr/bin/gcc -fno-stack-protector -DTABLES_NEXT_TO_CODE -c /tmp/ghc1541_0/ghc_4.c -o /tmp/ghc1541_0/ghc_5.o -I/usr/lib/ghc-7.10.3/include *** C Compiler: /usr/bin/gcc -fno-stack-protector -DTABLES_NEXT_TO_CODE -c /tmp/ghc1541_0/ghc_7.s -o /tmp/ghc1541_0/ghc_8.o -I/usr/lib/ghc-7.10.3/include *** Linker: /usr/bin/gcc -fno-stack-protector -DTABLES_NEXT_TO_CODE '-Wl,--hash- size=31' -Wl,--reduce-memory-overheads -Wl,--no-as-needed -o Main Main.o Test.o -L/usr/lib/ghc-7.10.3/base_HQfYBxpPvuw8OunzQu6JGM -L/usr/lib/ghc-7.10.3/integ_2aU3IZNMF9a7mQ0OzsZ0dS -L/usr/lib/ghc-7.10.3/ghcpr_8TmvWUcS1U1IKHT0levwg3 -L/usr/lib/ghc-7.10.3/rts /tmp/ghc1541_0/ghc_5.o /tmp/ghc1541_0/ghc_8.o -Wl,-u,ghczmprim_GHCziTypes_Izh_static_info -Wl,-u,ghczmprim_GHCziTypes_Czh_static_info -Wl,-u,ghczmprim_GHCziTypes_Fzh_static_info -Wl,-u,ghczmprim_GHCziTypes_Dzh_static_info -Wl,-u,base_GHCziPtr_Ptr_static_info -Wl,-u,ghczmprim_GHCziTypes_Wzh_static_info -Wl,-u,base_GHCziInt_I8zh_static_info -Wl,-u,base_GHCziInt_I16zh_static_info -Wl,-u,base_GHCziInt_I32zh_static_info -Wl,-u,base_GHCziInt_I64zh_static_info -Wl,-u,base_GHCziWord_W8zh_static_info -Wl,-u,base_GHCziWord_W16zh_static_info -Wl,-u,base_GHCziWord_W32zh_static_info -Wl,-u,base_GHCziWord_W64zh_static_info -Wl,-u,base_GHCziStable_StablePtr_static_info -Wl,-u,ghczmprim_GHCziTypes_Izh_con_info -Wl,-u,ghczmprim_GHCziTypes_Czh_con_info -Wl,-u,ghczmprim_GHCziTypes_Fzh_con_info -Wl,-u,ghczmprim_GHCziTypes_Dzh_con_info -Wl,-u,base_GHCziPtr_Ptr_con_info -Wl,-u,base_GHCziPtr_FunPtr_con_info -Wl,-u,base_GHCziStable_StablePtr_con_info -Wl,-u,ghczmprim_GHCziTypes_False_closure -Wl,-u,ghczmprim_GHCziTypes_True_closure -Wl,-u,base_GHCziPack_unpackCString_closure -Wl,-u,base_GHCziIOziException_stackOverflow_closure -Wl,-u,base_GHCziIOziException_heapOverflow_closure -Wl,-u,base_ControlziExceptionziBase_nonTermination_closure -Wl,-u,base_GHCziIOziException_blockedIndefinitelyOnMVar_closure -Wl,-u,base_GHCziIOziException_blockedIndefinitelyOnSTM_closure -Wl,-u,base_GHCziIOziException_allocationLimitExceeded_closure -Wl,-u,base_ControlziExceptionziBase_nestedAtomically_closure -Wl,-u,base_GHCziEventziThread_blockedOnBadFD_closure -Wl,-u,base_GHCziWeak_runFinalizzerBatch_closure -Wl,-u,base_GHCziTopHandler_flushStdHandles_closure -Wl,-u,base_GHCziTopHandler_runIO_closure -Wl,-u,base_GHCziTopHandler_runNonIO_closure -Wl,-u,base_GHCziConcziIO_ensureIOManagerIsRunning_closure -Wl,-u,base_GHCziConcziIO_ioManagerCapabilitiesChanged_closure -Wl,-u,base_GHCziConcziSync_runSparks_closure -Wl,-u,base_GHCziConcziSignal_runHandlersPtr_closure -lHSbase-4.8.2.0-HQfYBxpPvuw8OunzQu6JGM -lHSinteger- gmp-1.0.0.0-2aU3IZNMF9a7mQ0OzsZ0dS -lHSghc- prim-0.4.0.0-8TmvWUcS1U1IKHT0levwg3 -lHSrts -lCffi -lgmp -lm -lrt -ldl link: done *** Deleting temp files: Deleting: /tmp/ghc1541_0/ghc_10.rsp /tmp/ghc1541_0/ghc_9.rsp /tmp/ghc1541_0/ghc_8.o /tmp/ghc1541_0/ghc_7.s /tmp/ghc1541_0/ghc_6.rsp /tmp/ghc1541_0/ghc_5.o /tmp/ghc1541_0/ghc_4.c *** Deleting temp dirs: Deleting: /tmp/ghc1541_0 }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11792> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #12519: Rendered Haddock for Eq and Ord are missing class methods
by GHC 01 Oct '16

01 Oct '16

#12519: Rendered Haddock for Eq and Ord are missing class methods -------------------------------------+------------------------------------- Reporter: darchon | Owner: Type: bug | Status: new Priority: normal | Milestone: 8.0.2 Component: Documentation | Version: 8.0.1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: Documentation Unknown/Multiple | bug Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- The rendered haddock for the {{{Eq}}} and {{{Ord}}} classes are missing: * Their class methods * Their source links See: * http://hackage.haskell.org/package/base-4.9.0.0/docs/Data-Eq.html#t:Eq * http://hackage.haskell.org/package/base-4.9.0.0/docs/Prelude.html#t:Eq * http://hackage.haskell.org/package/base-4.9.0.0/docs/Data-Ord.html#t:Ord * http://hackage.haskell.org/package/base-4.9.0.0/docs/Prelude.html#t:Ord Other (deriviable) classes, for example {{{Show}}}, or {{{Enum}}}, do not have these problems. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12519> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #12487: configure.ac uses wrong triple information.
by GHC 01 Oct '16

01 Oct '16

#12487: configure.ac uses wrong triple information. -------------------------------------+------------------------------------- Reporter: Phyx- | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Build System | Version: 8.0.1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: Building GHC Unknown/Multiple | failed Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- GHC's `configure` script seems to normalize the values returned from `config.guess`. So for Windows it turns `x86_64-pc-mingw64` into `x86_64-unknown-mingw32`. These mangled names are stored in the values `$BuildPlatform`, `$HostPlatform` and `$TargetPlatform`. However further down the file when the comparison is done between the stage0 compiler and the host the normalized versions are not used. So when normalization actually changes the triple this check will fail. Not sure why it's worked for all this time.. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12487> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #12602: Add NUMA support to Windows
by GHC 01 Oct '16

01 Oct '16

#12602: Add NUMA support to Windows -------------------------------------+------------------------------------- Reporter: Phyx- | Owner: Type: task | Status: new Priority: normal | Milestone: 8.2.1 Component: Compiler | Version: 8.0.1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: #11054 Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Add support for NUMA for Windows. Core APIs are here https://msdn.microsoft.com/en- us/library/windows/desktop/aa363804(v=vs.85).aspx and map pretty closely to the Linux ones for our needs. Support is just filling in the gaps in the new functions. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/12602> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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