March 2015 - ghc-tickets

[GHC] #9590: AMP breaks `haskell2010` package
by GHC 02 Jan '16

02 Jan '16

#9590: AMP breaks `haskell2010` package -------------------------------------+------------------------------------- Reporter: hvr | Owner: Type: bug | Status: new Priority: high | Milestone: 7.10.1 Component: | Version: 7.9 libraries/haskell2010 | Operating System: Keywords: AMP | Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: GHC Difficulty: Unknown | rejects valid program Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- (and probably also `haskell98`) I hate to be the one pointing this out, but the AMP has one ugly side- effect. Consider the following session: ``` $ inplace/bin/ghc-stage2 --interactive -XHaskell2010 -hide-all-packages -package haskell2010 GHCi, version 7.9.20140914: http://www.haskell.org/ghc/ :? for help Loading package ghc-prim-0.3.1.0 ... linking ... done. Loading package integer-gmp-0.5.1.0 ... linking ... done. Loading package base-4.8.0.0 ... linking ... done. Loading package array-0.5.0.1 ... linking ... done. Loading package haskell2010-1.1.2.1 ... linking ... done. λ:2> data Identity a = Identity a data Identity a = Identity a λ:3> instance Monad Identity <interactive>:3:10: No instance for (base-4.8.0.0:GHC.Base.Applicative Identity) arising from the superclasses of an instance declaration In the instance declaration for ‘Monad Identity’ λ:4> :info Monad class base-4.8.0.0:GHC.Base.Applicative m => Monad (m :: * -> *) where (>>=) :: m a -> (a -> m b) -> m b (>>) :: m a -> m b -> m b return :: a -> m a fail :: String -> m a -- Defined in ‘base-4.8.0.0:GHC.Base’ instance Monad (Either e) -- Defined in ‘base-4.8.0.0:Data.Either’ instance Monad Maybe -- Defined in ‘base-4.8.0.0:Data.Maybe’ instance Monad [] -- Defined in ‘base-4.8.0.0:GHC.Base’ instance Monad IO -- Defined in ‘base-4.8.0.0:GHC.Base’ instance Monad ((->) r) -- Defined in ‘base-4.8.0.0:GHC.Base’ λ:5> ``` -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9590> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8182: Parser.y.pp needs special treatment with -fcmm-sink
by GHC 31 Dec '15

31 Dec '15

#8182: Parser.y.pp needs special treatment with -fcmm-sink ------------------------------------+------------------------------------- Reporter: thoughtpolice | Owner: thoughtpolice Type: bug | Status: new Priority: highest | Milestone: 7.8.1 Component: Build System | Version: 7.7 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ------------------------------------+------------------------------------- This bug is really more of a reminder, but it's critical for the 7.8.1 release. Right now, `Parser.y.pp` uses a very weird hack to pass `-fcmm-sink` to the compiler. Here's the relevant comment: {{{ -- CPP tricks because we want the directives in the output of the -- first CPP pass. -- -- Clang note, 6/17/2013 by aseipp: It is *extremely* important (for -- some reason) that there be a line of whitespace between the two -- definitions here, and the subsequent use of __IF_GHC_77__ - this -- seems to be a bug in clang or something, where having the line of -- whitespace will make the preprocessor correctly format the rendered -- lines in the 'two step' CPP pass. No, this is not a joke. #define __IF_GHC_77__ #if __GLASGOW_HASKELL__ >= 707 #define __ENDIF__ #endif __IF_GHC_77__ -- Required on x86 to avoid the register allocator running out of -- stack slots when compiling this module with -fPIC -dynamic. {-# OPTIONS_GHC -fcmm-sink #-} __ENDIF__ }}} This is because the parser is first preprocessed before being run with GHC (which again preprocesses,) so we want the resulting `#ifdef` in the final `.hs` file. Things to note: * We really shouldn't be doing this, it's amazingly fragile. I think the correct thing to do is to ensure the build system correctly passes `-fcmm- sink` during the stage[2,3] build. * `./configure.ac` needs to check to see if the bootstrapping compiler is `ghc >= 7.7` (or `7.8`) and if it is, ''also'' pass `-fcmm-sink` during the stage1 build. * This hack needs to be removed once we can rely on >= 7.8 for bootstrap. Probably something like the hypothetical 7.12-7.14 timeframe. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8182> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #9734: Provide macro __GLASGOW_HASKELL_TH__
by GHC 31 Dec '15

31 Dec '15

#9734: Provide macro __GLASGOW_HASKELL_TH__ -------------------------------------+------------------------------------- Reporter: nomeata | Owner: Type: feature request | Status: new Priority: normal | Milestone: 7.10.1 Component: Compiler | Version: 7.8.3 Keywords: | Operating System: Architecture: Unknown/Multiple | Unknown/Multiple Difficulty: Unknown | Type of failure: Blocked By: | None/Unknown Related Tickets: | Test Case: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- The Debian packaging added a few hacks to create a CPP macro that can be used to distinguish compilers with Template Haskell support from those that don’t have that support. We need this to compiler some code on non- TH architectures. It works, but we found that we cannot upstream such patches, which is a shame. I propose that among the GHC-defined macros listed at https://www.haskell.org/ghc/docs/latest/html/users_guide/options- phases.html#c-pre-processor there is also `__GLASGOW_HASKELL_TH__=YES`, which is available if the compiler supports splices, or ``__GLASGOW_HASKELL_TH__=NO` if not. (I propose a two-valued comparison so that library authors can decide themselves what the default should be if this symbol is not defined, some might want to use TH on older compilers, some not.) I hope this can be part of 7.10. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9734> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #9237: GHC not recognizing "-llibrary" form in implicit linker scripts
by GHC 31 Dec '15

31 Dec '15

#9237: GHC not recognizing "-llibrary" form in implicit linker scripts ----------------------------------+--------------------------------------- Reporter: mmikolajczyk | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.2 Keywords: | Operating System: Unknown/Multiple Architecture: x86_64 (amd64) | Type of failure: Compile-time crash Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ----------------------------------+--------------------------------------- I have tried to build accelerate-llvm package and encountered an invalid behaviour of linker. I am using Arch Linux and GHC 7.8.2. I have installed llvm-general-3.4.2.2 and llvm-general-pure-3.4.2.2 from this branch: https://github.com/tvh/llvm- general/tree/curatedTargetMachine, and accelerate from HEAD to common sandbox. Then I tried to build accelerate-llvm using the sandbox and got this output during building: {{{ Building accelerate-llvm-0.15.0.0... Preprocessing library accelerate-llvm-0.15.0.0... [ 1 of 30] Compiling Data.Range.Range ( Data/Range/Range.hs, dist/build/Data/Range/Range.o ) Loading package ghc-prim ... linking ... done. Loading package integer-gmp ... linking ... done. Loading package base ... linking ... done. Loading package primitive-0.5.3.0 ... linking ... done. Loading package array-0.5.0.0 ... linking ... done. Loading package deepseq-1.3.0.2 ... linking ... done. Loading package old-locale-1.0.0.6 ... linking ... done. Loading package time-1.4.2 ... linking ... done. Loading package vector-0.10.11.0 ... linking ... done. Loading package mwc-random-0.13.1.2 ... linking ... done. Loading package bytestring-0.10.4.0 ... linking ... done. Loading package containers-0.5.5.1 ... linking ... done. Loading package transformers-0.4.1.0 ... linking ... done. Loading package mtl-2.2.1 ... linking ... done. Loading package text-1.1.1.3 ... linking ... done. Loading package parsec-3.1.5 ... linking ... done. Loading package unix-2.7.0.1 ... linking ... done. Loading package setenv-0.1.1.1 ... linking ... done. Loading package pretty-1.1.1.1 ... linking ... done. Loading package template-haskell ... linking ... done. Loading package llvm-general-pure-3.4.2.2 ... linking ... done. Loading package utf8-string-0.3.8 ... linking ... done. Loading package llvm-general-3.4.2.2 ... <command line>: can't load .so/.DLL for: /usr/lib/libcurses.so (-lncursesw: cannot open shared object file: No such file or directory) }}} After some searching I narrowed down the issue to `/usr/lib/libcurses.so` file. In Arch, this file contains `INPUT(-lncursesw)`. If I change it to `INPUT(libncursesw.so)` or `INPUT(/usr/lib/libncursesw.so)` it works fine. Symlinking `/usr/lib/libcurses.so` to `/usr/lib/libncursesw.so` also works. This bug seems to be connected to #2615. GHC still doesn't follow `INPUT` commands containing `-llibrary` form. Ld documentation allows this: {{{If you use `INPUT (-lfile)', ld will transform the name to libfile.a, as with the command line argument `-l'}}}. (https://sourceware.org/binutils/docs/ld/File-Commands.html) -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9237> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #9825: ghc "panic! (the 'impossible' happened)" building vimus on NixOS
by GHC 31 Dec '15

31 Dec '15

#9825: ghc "panic! (the 'impossible' happened)" building vimus on NixOS ----------------------------+--------------------------------------------- Reporter: jzellner | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.3 Keywords: | Operating System: Linux Architecture: x86 | Type of failure: Compile-time crash Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: ----------------------------+--------------------------------------------- Hey there, I'm having trouble building vimus (https://github.com/vimus/vimus) on NixOS. The package builds fine locally for an x64 system, but is failing on i686 builds. On the NixOS builder: http://hydra.nixos.org/build/17512103/nixlog/2 {{{ [nix-shell:/tmp/build-17512103/vimus-0.2.0]$ ./Setup clean && ./Setup configure --enable-shared --enable-library-vanilla --enable-executable- dynamic --enable-tests --ghc- option=-optl=-Wl,-rpath=/nix/store/cgkfxxk1iz30fg0r3kf9dv2p550i5hn2-vimus-0.2.0/lib/ghc-7.8.3/vimus-0.2.0 --ghc-option=-j8 && ./Setup build cleaning... Configuring vimus-0.2.0... Building vimus-0.2.0... Preprocessing library vimus-0.2.0... [ 1 of 39] Compiling Constant ( dist/build/Constant.hs, dist/build/Constant.o ) [ 2 of 39] Compiling CursesUtil ( ncursesw/src/CursesUtil.hs, dist/build/CursesUtil.o ) [ 3 of 39] Compiling Timer ( src/Timer.hs, dist/build/Timer.o ) [ 4 of 39] Compiling UI.Curses.Type ( dist/build/UI/Curses/Type.hs, dist/build/UI/Curses/Type.o ) [ 5 of 39] Compiling Misc ( dist/build/Misc.hs, dist/build/Misc.o ) ncursesw/src/Misc.chs:7:1: Warning: The import of ‘Foreign.C.String’ is redundant except perhaps to import instances from ‘Foreign.C.String’ To import instances alone, use: import Foreign.C.String() ncursesw/src/Misc.chs:8:1: Warning: The import of ‘Foreign.Marshal.Alloc’ is redundant except perhaps to import instances from ‘Foreign.Marshal.Alloc’ To import instances alone, use: import Foreign.Marshal.Alloc() ncursesw/src/Misc.chs:9:1: Warning: The import of ‘Foreign.Storable’ is redundant except perhaps to import instances from ‘Foreign.Storable’ To import instances alone, use: import Foreign.Storable() ncursesw/src/Misc.chs:10:1: Warning: The import of ‘Foreign.ForeignPtr’ is redundant except perhaps to import instances from ‘Foreign.ForeignPtr’ To import instances alone, use: import Foreign.ForeignPtr() ncursesw/src/Misc.chs:12:1: Warning: The import of ‘Data.Char’ is redundant except perhaps to import instances from ‘Data.Char’ To import instances alone, use: import Data.Char() ncursesw/src/Misc.chs:29:1: Warning: Top-level binding with no type signature: cFromBool :: Bool -> Integer ncursesw/src/Misc.chs:29:13: Warning: Defaulting the following constraint(s) to type ‘Integer’ (Num a0) arising from a use of ‘fromBool’ In the expression: fromBool In an equation for ‘cFromBool’: cFromBool = fromBool ncursesw/src/Misc.chs:30:1: Warning: Top-level binding with no type signature: cToBool :: Integer -> Bool ncursesw/src/Misc.chs:30:13: Warning: Defaulting the following constraint(s) to type ‘Integer’ (Num a0) arising from a use of ‘toBool’ at ncursesw/src/Misc.chs:30:13-18 (Eq a0) arising from a use of ‘toBool’ at ncursesw/src/Misc.chs:30:13-18 In the expression: toBool In an equation for ‘cToBool’: cToBool = toBool ncursesw/src/Misc.chs:42:1: Warning: Top-level binding with no type signature: fromAttr :: Attr -> CInt ncursesw/src/Misc.chs:77:1: Warning: Top-level binding with no type signature: wcolor_set :: Window -> Int -> IO Status ncursesw/src/Misc.chs:86:1: Warning: Top-level binding with no type signature: wattr_off :: Window -> [Attribute] -> IO Status ncursesw/src/Misc.chs:90:1: Warning: Top-level binding with no type signature: wattr_on :: Window -> [Attribute] -> IO Status ncursesw/src/Misc.chs:98:1: Warning: Top-level binding with no type signature: wchgat :: Window -> Int -> [Attribute] -> Int -> IO Status ncursesw/src/Misc.chs:103:1: Warning: Top-level binding with no type signature: mvwchgat :: Window -> Int -> Int -> Int -> [Attribute] -> Int -> IO Status [ 6 of 39] Compiling CursesInput ( dist/build/CursesInput.hs, dist/build/CursesInput.o ) [ 7 of 39] Compiling Instances ( src/Instances.hs, dist/build/Instances.o ) [ 8 of 39] Compiling Data.List.Pointed ( src/Data/List/Pointed.hs, dist/build/Data/List/Pointed.o ) [ 9 of 39] Compiling Data.List.Zipper ( src/Data/List/Zipper.hs, dist/build/Data/List/Zipper.o ) [10 of 39] Compiling UI.Curses.Key ( dist/build/UI/Curses/Key.hs, dist/build/UI/Curses/Key.o ) [11 of 39] Compiling Vimus.Tab ( src/Vimus/Tab.hs, dist/build/Vimus/Tab.o ) [12 of 39] Compiling Vimus.Command.Parser ( src/Vimus/Command/Parser.hs, dist/build/Vimus/Command/Parser.o ) [13 of 39] Compiling Vimus.Key ( src/Vimus/Key.hs, dist/build/Vimus/Key.o ) [14 of 39] Compiling Paths_vimus ( dist/build/autogen/Paths_vimus.hs, dist/build/Paths_vimus.o ) [15 of 39] Compiling Vimus.Song ( src/Vimus/Song.hs, dist/build/Vimus/Song.o ) [16 of 39] Compiling Vimus.Song.Format ( src/Vimus/Song/Format.hs, dist/build/Vimus/Song/Format.o ) [17 of 39] Compiling Vimus.Queue ( src/Vimus/Queue.hs, dist/build/Vimus/Queue.o ) [18 of 39] Compiling Vimus.Util ( src/Vimus/Util.hs, dist/build/Vimus/Util.o ) [19 of 39] Compiling Option ( src/Option.hs, dist/build/Option.o ) [20 of 39] Compiling PlaybackState ( src/PlaybackState.hs, dist/build/PlaybackState.o ) [21 of 39] Compiling Curses ( dist/build/Curses.hs, dist/build/Curses.o ) ncursesw/src/Curses.chs:73:1: Warning: The import of ‘Foreign.C.String’ is redundant except perhaps to import instances from ‘Foreign.C.String’ To import instances alone, use: import Foreign.C.String() ncursesw/src/Curses.chs:76:1: Warning: The import of ‘chr’ from module ‘Data.Char’ is redundant ncursesw/src/Curses.chs:150:1: Warning: Defined but not used: ‘wnoutrefresh’ ncursesw/src/Curses.chs:151:1: Warning: Defined but not used: ‘doupdate’ ncursesw/src/Curses.chs:152:1: Warning: Defined but not used: ‘redrawwin’ ncursesw/src/Curses.chs:153:1: Warning: Defined but not used: ‘wredrawln’ ncursesw/src/Curses.chs:160:1: Warning: Defined but not used: ‘getparyx’ ncursesw/src/Curses.chs:207:1: Warning: Defined but not used: ‘cFromBool’ ncursesw/src/Curses.chs:207:1: Warning: Top-level binding with no type signature: cFromBool :: Bool -> Integer ncursesw/src/Curses.chs:207:13: Warning: Defaulting the following constraint(s) to type ‘Integer’ (Num a0) arising from a use of ‘fromBool’ In the expression: fromBool In an equation for ‘cFromBool’: cFromBool = fromBool ncursesw/src/Curses.chs:374:1: Warning: Defined but not used: ‘wnoutrefresh'_’ ncursesw/src/Curses.chs:377:1: Warning: Defined but not used: ‘doupdate'_’ ncursesw/src/Curses.chs:380:1: Warning: Defined but not used: ‘redrawwin'_’ ncursesw/src/Curses.chs:383:1: Warning: Defined but not used: ‘wredrawln'_’ ncursesw/src/Curses.chs:389:1: Warning: Defined but not used: ‘getparyx'_’ [22 of 39] Compiling UI.Curses ( ncursesw/src/UI/Curses.hs, dist/build/UI/Curses.o ) [23 of 39] Compiling Vimus.WindowLayout ( src/Vimus/WindowLayout.hs, dist/build/Vimus/WindowLayout.o ) [24 of 39] Compiling Vimus.Widget.Type ( src/Vimus/Widget/Type.hs, dist/build/Vimus/Widget/Type.o ) [25 of 39] Compiling Content ( src/Content.hs, dist/build/Content.o ) [26 of 39] Compiling Vimus.Input ( src/Vimus/Input.hs, dist/build/Vimus/Input.o ) [27 of 39] Compiling Vimus.Macro ( src/Vimus/Macro.hs, dist/build/Vimus/Macro.o ) [28 of 39] Compiling Vimus.Render ( src/Vimus/Render.hs, dist/build/Vimus/Render.o ) [29 of 39] Compiling Vimus.Ruler ( src/Vimus/Ruler.hs, dist/build/Vimus/Ruler.o ) [30 of 39] Compiling Vimus.Type ( src/Vimus/Type.hs, dist/build/Vimus/Type.o ) [31 of 39] Compiling Vimus.Command.Type ( src/Vimus/Command/Type.hs, dist/build/Vimus/Command/Type.o ) [32 of 39] Compiling Vimus.Command.Help ( src/Vimus/Command/Help.hs, dist/build/Vimus/Command/Help.o ) [33 of 39] Compiling Vimus.Command.Completion ( src/Vimus/Command/Completion.hs, dist/build/Vimus/Command/Completion.o ) [34 of 39] Compiling Vimus.Command.Core ( src/Vimus/Command/Core.hs, dist/build/Vimus/Command/Core.o ) [35 of 39] Compiling Vimus.Widget.ListWidget ( src/Vimus/Widget/ListWidget.hs, dist/build/Vimus/Widget/ListWidget.o ) [36 of 39] Compiling Vimus.Widget.TextWidget ( src/Vimus/Widget/TextWidget.hs, dist/build/Vimus/Widget/TextWidget.o ) [37 of 39] Compiling Vimus.Widget.HelpWidget ( src/Vimus/Widget/HelpWidget.hs, dist/build/Vimus/Widget/HelpWidget.o ) [38 of 39] Compiling Vimus.Command ( src/Vimus/Command.hs, dist/build/Vimus/Command.o ) Loading package ghc-prim ... linking ... done. Loading package integer-gmp ... linking ... done. Loading package base ... linking ... done. Loading package array-0.5.0.0 ... linking ... done. Loading package deepseq-1.3.0.2 ... linking ... done. Loading package bytestring-0.10.4.0 ... linking ... done. Loading package containers-0.5.5.1 ... linking ... done. Loading package text-1.2.0.0 ... linking ... done. Loading package hashable-1.2.2.0 ... linking ... done. Loading package scientific-0.3.3.2 ... linking ... done. Loading package attoparsec-0.12.1.2 ... linking ... done. Loading package setlocale-1.0.0.1 ... linking ... done. Loading package utf8-string-0.3.8 ... linking ... done. Loading package wcwidth-0.0.2 ... linking ... done. Loading package pretty-1.1.1.1 ... linking ... done. Loading package template-haskell ... linking ... done. Loading package filepath-1.3.0.2 ... linking ... done. Loading package old-locale-1.0.0.6 ... linking ... done. Loading package time-1.4.2 ... linking ... done. Loading package unix-2.7.0.1 ... linking ... done. Loading package directory-1.2.1.0 ... linking ... done. Loading package process-1.2.0.0 ... linking ... done. Loading package data-default-class-0.0.1 ... linking ... done. Loading package data-default-instances-base-0.0.1 ... linking ... done. Loading package data-default-instances-containers-0.0.1 ... linking ... done. Loading package dlist-0.7.1 ... linking ... done. Loading package data-default-instances-dlist-0.0.1 ... linking ... done. Loading package data-default-instances-old-locale-0.0.1 ... linking ... done. Loading package data-default-0.5.3 ... linking ... done. Loading package transformers-0.3.0.0 ... linking ... done. Loading package mtl-2.1.3.1 ... linking ... done. Loading package network-2.6.0.2 ... linking ... done. Loading package libmpd-0.9.0.1 ... linking ... done. <no location info>: ghc: panic! (the 'impossible' happened) (GHC version 7.8.3 for i386-unknown-linux): Loading temp shared object failed: /tmp/ghc6364_1/ghc6364_192.so: undefined symbol: nm_getyx Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug [nix-shell:/tmp/build-17512103/vimus-0.2.0]$ nixos-version 14.11pre52840.c347f1c (Caterpillar) [nix-shell:/tmp/build-17512103/vimus-0.2.0]$ ghc --version The Glorious Glasgow Haskell Compilation System, version 7.8.3 [nix-shell:/tmp/build-17512103/vimus-0.2.0]$ uname -a Linux ip-10-83-15-102.us-west-2.compute.internal 3.12.30 #1-NixOS SMP Thu Jan 1 00:00:01 UTC 1970 x86_64 GNU/Linux }}} Thanks for any help! -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9825> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #10046: Linker script patch in rts/Linker.c doesn't work for (non-C or non-en..) locales
by GHC 30 Dec '15

30 Dec '15

#10046: Linker script patch in rts/Linker.c doesn't work for (non-C or non-en..) locales -------------------------------------+------------------------------------- Reporter: hgolden | Owner: simonmar Type: bug | Status: new Priority: normal | Milestone: 7.12.1 Component: Runtime | Version: 7.8.4 System | Operating System: Unknown/Multiple Keywords: linker | Type of failure: Incorrect result script | at runtime Architecture: | Blocked By: Unknown/Multiple | Related Tickets: 2615, 9237 Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Please see ticket:2615#comment:40 and replies. This error only occurs on systems where linker scripts are used. The linker script patch (as it has evolved) assumes that the error messages it will receive are in English. This would be true if the locale (LC_MESSAGES) is C or en (or one of the en variants). However, in other locales, the message will be in a different language. Unfortunately, the semantics of POSIX dlerror() specify that the error is returned as a pointer to a human-readable text string, rather than an error code. The string returned depends on the locale. The code could be made more robust by momentarily changing the locale (LC_MESSAGES) to C before calling dlerror() and reverting it to its previous value immediately after. This has been tested on a zh_CN.utf-8 (see ticket:2615#comment:42) and works. The only concern I have is in the case of multithreaded code that _might_ be affected if it is running while the locale is changed. I don't know enough to know if this is a real issue or not, nor do I know how to deal with it if necessary. Also see ticket:9237 for another corner case in the linker script code that should be dealt with at the same time. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10046> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #9614: ghc --print-(gcc|ld)-linker-flags broken
by GHC 29 Dec '15

29 Dec '15

#9614: ghc --print-(gcc|ld)-linker-flags broken -------------------------------------+------------------------------------- Reporter: rwbarton | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.3 Keywords: | Operating System: Architecture: Unknown/Multiple | Unknown/Multiple Difficulty: Unknown | Type of failure: Blocked By: | None/Unknown Related Tickets: | Test Case: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- {{{ rwbarton@morphism:~/ghc$ ghc --print-gcc-linker-flags ghc: panic! (the 'impossible' happened) (GHC version 7.8.3 for x86_64-unknown-linux): Setting not found: "Gcc Linker flags" Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug rwbarton@morphism:~/ghc$ ghc --print-ld-linker-flags ghc: panic! (the 'impossible' happened) (GHC version 7.8.3 for x86_64-unknown-linux): Setting not found: "Ld Linker flags" Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} In 2d2650bf65da3aede4e1c1ca4da623092b869dbe and subsequent commits (between 7.6 and 7.8) these settings fields became "C compiler link flags" and "ld flags". (I think, more or less.) The real problem is that Cabal still looks for the settings fields "Gcc Linker flags" and "Ld Linker flags". I guess this should be updated on the Cabal side though. (They are empty on at least Linux x86_64, which I guess is why nobody noticed before.) -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9614> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #9414: GHC 7.8.3 compilation fails on Raspberry PI
by GHC 26 Dec '15

26 Dec '15

#9414: GHC 7.8.3 compilation fails on Raspberry PI ----------------------------+--------------------------------------- Reporter: ipuustin | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.3 Keywords: | Operating System: Linux Architecture: arm | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Revisions: ----------------------------+--------------------------------------- Tried to compile GHC 7.8.3 from the source package on Raspbian (a Debian- based Raspberry PI distribution). The installed GHC version is 7.4.1. All build dependencies for 7.4.1 were installed ('apt-get build-dep ghc'). {{{ "inplace/bin/ghc-stage1" -o utils/dll-split/dist-install/build/tmp/dll- split -hisuf dyn_hi -osuf dyn_o -hcsuf dyn_hc -fPIC -dynamic -H32m -O -hide-all-packages -i -iutils/dll-split/. -iutils/dll-split/dist- install/build -iutils/dll-split/dist-install/build/autogen -Iutils/dll- split/dist-install/build -Iutils/dll-split/dist-install/build/autogen -optP-include -optPutils/dll-split/dist- install/build/autogen/cabal_macros.h -package base-4.7.0.1 -package containers-0.5.5.1 -package filepath-1.3.0.2 -XHaskell98 -no-user- package-db -rtsopts -odir utils/dll-split/dist-install/build -hidir utils/dll-split/dist-install/build -stubdir utils/dll-split/dist- install/build -optl-L'/home/pi/ghc/ghc-7.8.3/libraries/filepath/dist- install/build' -optl-L'/home/pi/ghc/ghc-7.8.3/libraries/containers/dist- install/build' -optl-L'/home/pi/ghc/ghc-7.8.3/libraries/deepseq/dist- install/build' -optl-L'/home/pi/ghc/ghc-7.8.3/libraries/array/dist- install/build' -optl-L'/home/pi/ghc/ghc-7.8.3/libraries/base/dist- install/build' -optl-L'/home/pi/ghc/ghc-7.8.3/libraries/integer-gmp/dist- install/build' -optl-L'/home/pi/ghc/ghc-7.8.3/libraries/ghc-prim/dist- install/build' -optl-L'/home/pi/ghc/ghc-7.8.3/rts/dist/build' -optl-lgmp -optl-lm -optl-lrt -optl-ldl -fPIC -dynamic -H32m -O -hide-all- packages -i -iutils/dll-split/. -iutils/dll-split/dist-install/build -iutils/dll-split/dist-install/build/autogen -Iutils/dll-split/dist- install/build -Iutils/dll-split/dist-install/build/autogen -optP- include -optPutils/dll-split/dist-install/build/autogen/cabal_macros.h -package base-4.7.0.1 -package containers-0.5.5.1 -package filepath-1.3.0.2 -XHaskell98 -no-user-package-db -rtsopts -fno-use- rpaths -optl-Wl,-rpath -optl-Wl,'$ORIGIN/../filepath-1.3.0.2' -optl- Wl,-rpath -optl-Wl,'$ORIGIN/../containers-0.5.5.1' -optl-Wl,-rpath -optl- Wl,'$ORIGIN/../deepseq-1.3.0.2' -optl-Wl,-rpath -optl- Wl,'$ORIGIN/../array-0.5.0.0' -optl-Wl,-rpath -optl- Wl,'$ORIGIN/../base-4.7.0.1' -optl-Wl,-rpath -optl-Wl,'$ORIGIN/../integer- gmp-0.5.1.0' -optl-Wl,-rpath -optl-Wl,'$ORIGIN/../ghc-prim-0.3.1.0' -optl- Wl,-rpath -optl-Wl,'$ORIGIN/../rts-1.0' -optl-Wl,-zorigin utils/dll-split /dist-install/build/Main.dyn_o "cp" -p utils/dll-split/dist-install/build/tmp/dll-split inplace/lib/bin /dll-split "rm" -f inplace/bin /dll-split echo '#!/bin/bash' >> inplace/bin/dll-split echo 'executablename="/home/pi/ghc/ghc-7.8.3/inplace/lib/bin/dll-split"' >> inplace/bin/dll-split echo 'datadir="/home/pi/ghc/ghc-7.8.3/inplace/lib"' >> inplace/bin/dll-split echo 'bindir="/home/pi/ghc/ghc-7.8.3/inplace/bin"' >> inplace/bin/dll-split echo 'topdir="/home/pi/ghc/ghc-7.8.3/inplace/lib"' >> inplace/bin/dll-split echo 'pgmgcc="/usr/bin/gcc"' >> inplace/bin/dll-split echo 'export LD_LIBRARY_PATH="/home/pi/ghc/ghc-7.8.3/libraries/filepath /dist-install/build:/home/pi/ghc/ghc-7.8.3/libraries/containers/dist- install/build:/home/pi/ghc/ghc-7.8.3/libraries/deepseq/dist- install/build:/home/pi/ghc/ghc-7.8.3/libraries/array/dist- install/build:/home/pi/ghc/ghc-7.8.3/libraries/base/dist- install/build:/home/pi/ghc/ghc-7.8.3/libraries/integer-gmp/dist- install/build:/home/pi/ghc/ghc-7.8.3/libraries/ghc-prim/dist- install/build:/home/pi/ghc/ghc-7.8.3/rts/dist/build:$LD_LIBRARY_PATH"' >> inplace/bin/dll-split echo 'exec "$executablename" ${1+"$@"}' >> inplace/bin /dll-split chmod +x inplace/bin /dll-split inplace/bin/dll-split compiler/stage2/build/.depend-v-p-dyn.haskell "DynFlags" "Annotations Avail Bag BasicTypes BinIface Binary Bitmap BlockId BooleanFormula BreakArray BufWrite BuildTyCl ByteCodeAsm ByteCodeInstr ByteCodeItbls CLabel Class CmdLineParser Cmm CmmCallConv CmmExpr CmmInfo CmmMachOp CmmNode CmmType CmmUtils CoAxiom ConLike CodeGen.Platform CodeGen.Platform.ARM CodeGen.Platform.NoRegs CodeGen.Platform.PPC CodeGen.Platform.PPC_Darwin CodeGen.Platform.SPARC CodeGen.Platform.X86 CodeGen.Platform.X86_64 Coercion Config Constants CoreArity CoreFVs CoreLint CoreSubst CoreSyn CoreTidy CoreUnfold CoreUtils CostCentre DataCon Demand Digraph DriverPhases DsMonad DynFlags Encoding ErrUtils Exception ExtsCompat46 FamInstEnv FastBool FastFunctions FastMutInt FastString FastTypes Finder Fingerprint FiniteMap ForeignCall Hooks Hoopl Hoopl.Dataflow HsBinds HsDecls HsDoc HsExpr HsImpExp HsLit HsPat HsSyn HsTypes HsUtils HscTypes IOEnv Id IdInfo IfaceEnv IfaceSyn IfaceType InstEnv InteractiveEvalTypes Kind ListSetOps Literal LoadIface Maybes MkCore MkGraph MkId Module MonadUtils Name NameEnv NameSet OccName OccurAnal OptCoercion OrdList Outputable PackageConfig Packages Pair Panic PatSyn PipelineMonad Platform PlatformConstants PprCmm PprCmmDecl PprCmmExpr PprCore PrelInfo PrelNames PrelRules Pretty PrimOp RdrName Reg RegClass Rules SMRep Serialized SrcLoc StaticFlags StgCmmArgRep StgCmmClosure StgCmmEnv StgCmmLayout StgCmmMonad StgCmmProf StgCmmTicky StgCmmUtils StgSyn Stream StringBuffer TcEvidence TcIface TcRnMonad TcRnTypes TcType TcTypeNats TrieMap TyCon Type TypeRep TysPrim TysWiredIn Unify UniqFM UniqSet UniqSupply Unique Util Var VarEnv VarSet" dll-split: internal error: evacuate(static): strange closure type 0 (GHC version 7.8.3 for arm_unknown_linux) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug make[1]: *** [compiler/stage2/dll-split.stamp] Keskeytetty make: *** [all] Virhe 2 }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9414> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #9176: GHC not generating dyn_hi files
by GHC 25 Dec '15

25 Dec '15

#9176: GHC not generating dyn_hi files ----------------------------------+---------------------------- Reporter: heatsink | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.9 Keywords: dynamic | Operating System: MacOS X Architecture: x86_64 (amd64) | Type of failure: Other Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ----------------------------------+---------------------------- In some situations, GHC terminates successfully and generates a `dyn_o` file, but no `dyn_hi` file. As a result, a package that contains a library seems to build successfully, but fails to install. I narrowed the problem down to the following test case. I compile it with `ghc --make -shared -dynamic-too Foo`. It seems to be Parsec-related, but I don't know how to trace it further. {{{ module Foo where import Text.ParserCombinators.Parsec }}} Parsec was installed with `cabal install --reinstall --user --enable- shared --disable-library-profiling parsec-3.1.5`. Some Parsec modules do not cause the missing `dyn_hi` file. For instance, all output files are created if Foo imports `Text.Parsec.Pos` instead of `Text.ParserCombinators.Parsec`. GHC was built from source, commit 9e10963e394680dbb1b964c66cb428a2aa03df09, compiled by GHC 7.6.3 with XCode 5.1.1 on OS X 10.9.3. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9176> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #9760: ghc -c 7.8 drops last char of file name if -osuf contains a dot
by GHC 24 Dec '15

24 Dec '15

#9760: ghc -c 7.8 drops last char of file name if -osuf contains a dot -------------------------------------+------------------------------------- Reporter: nh2 | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.8.4 Component: Build System | Version: 7.8.3 Keywords: | Operating System: Architecture: Unknown/Multiple | Unknown/Multiple Difficulty: Moderate (less | Type of failure: than a day) | None/Unknown Blocked By: | Test Case: Related Tickets: | Blocking: | Differential Revisions: -------------------------------------+------------------------------------- I discovered that if I compile with `ghc -c -osuf .something Myfile.hs` where `Myfile.hs` contains TH and thus has to dynamically link in, say, `Other.hs`, I get the error that {{{ Myfile.hs:1:1: cannot find normal object file 'Othe.dyn_o` while linking an interpreted expression }}} So `Other` was wrongly made into `Othe`, dropping the last character. If I don't pass `-osuf .something`, or have it not have a dot, everything's fine. The trouble is that `-osuf .something` worked fine in GHC <= 7.6. So I believe this is a regression, or at least a very bad error message. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9760> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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