November 2015 - ghc-tickets

Re: [GHC] #7602: Threaded RTS performing badly on recent OS X (10.8?)
by GHC 27 Nov '15

27 Nov '15

#7602: Threaded RTS performing badly on recent OS X (10.8?) -------------------------------------+------------------------------------- Reporter: simonmar | Owner: thoughtpolice Type: bug | Status: new Priority: high | Milestone: 8.0.1 Component: Runtime System | Version: Resolution: | Keywords: thread-local | state, TLS clang Operating System: MacOS X | Architecture: x86_64 Type of failure: Runtime | (amd64) performance bug | Test Case: Blocked By: 7678 | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by bgamari): thoughtpolice, did this ever happen? If not can we try to merge your patch for 8.0? -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7602#comment:51> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #11063: ghc -split-objs fails on Unicode file names
by GHC 27 Nov '15

27 Nov '15

#11063: ghc -split-objs fails on Unicode file names -------------------------------------+------------------------------------- Reporter: strake888 | Owner: Type: bug | Status: new Priority: normal | Milestone: 8.0.1 Component: Compiler | Version: 7.10.2 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: -------------------------------------+------------------------------------- See enclosed example. {{{ $ chdir example $ ghc -split-objs Main [1 of 2] Compiling Példa ( Példa.hs, Példa.o ) /usr/bin/ld: cannot find /home/strake/example/./P /usr/bin/ld: cannot find lda_o_split/P /usr/bin/ld: cannot find lda__1.o /usr/bin/ld: cannot find /home/strake/example/./P /usr/bin/ld: cannot find lda_o_split/P /usr/bin/ld: cannot find lda__2.o collect2: error: ld returned 1 exit status éééé $ }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11063> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #10755: Add `MonadPlus IO` and `Alternative IO` instances
by GHC 27 Nov '15

27 Nov '15

#10755: Add `MonadPlus IO` and `Alternative IO` instances -------------------------------------+------------------------------------- Reporter: hvr | Owner: Type: task | Status: new Priority: normal | Milestone: 7.12.1 Component: Core | Version: Libraries | Keywords: report- | Operating System: Unknown/Multiple impact | Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Revisions: | -------------------------------------+------------------------------------- Cloned and adapted from #9588: ---- The following 2 instances are currently Orphans in `transformers` but shall be defined in `base` instead: {{{#!hs instance MonadPlus IO instance Alternative IO }}} This proposal by SPJ already passed the CLC back in April and only needs implementing. I'll submit a patch shortly to Phab ---- This needs coordination w/ Ross as `transformers` must not define the same instances for new enough `base` versions. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10755> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #10279: panic on haskell-src-exts
by GHC 27 Nov '15

27 Nov '15

#10279: panic on haskell-src-exts -------------------------------------+------------------------------------- Reporter: | Owner: throwaway123 | Status: new Type: bug | Milestone: Priority: normal | Version: 7.10.1 Component: Compiler | Operating System: Linux Keywords: | Type of failure: Compile-time Architecture: x86_64 | crash (amd64) | Blocked By: Test Case: | Related Tickets: Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Compiling `Bug.hs`: {{{ {-# LANGUAGE QuasiQuotes #-} import Language.Haskell.Exts.QQ (dec) main :: IO () main = return () where foo = [dec| bar = 3 |] }}} by `ghc --make -v -dcore-lint Bug.hs` gives {{{ ghc --make -v -dcore-lint Bug.hs Glasgow Haskell Compiler, Version 7.10.1, stage 2 booted by GHC version 7.8.4 Using binary package database: /usr/lib/ghc-7.10.1/package.conf.d/package.cache wired-in package ghc-prim mapped to ghc- prim-0.4.0.0-7c945cc0c41d3b7b70f3edd125671166 wired-in package integer-gmp mapped to integer- gmp-1.0.0.0-3c947e5fb6dca14804d9b2793c521b67 wired-in package base mapped to base-4.8.0.0-1b689eb8d72c4d4cc88f445839c1f01a wired-in package rts mapped to builtin_rts wired-in package template-haskell mapped to template- haskell-2.10.0.0-e895139a0ffff267d412e3d0191ce93b wired-in package ghc mapped to ghc-7.10.1-325809317787a897b7a97d646ceaa3a3 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-0.4.0.0-7c945cc0c41d3b7b70f3edd125671166 wired-in package integer-gmp mapped to integer- gmp-1.0.0.0-3c947e5fb6dca14804d9b2793c521b67 wired-in package base mapped to base-4.8.0.0-1b689eb8d72c4d4cc88f445839c1f01a wired-in package rts mapped to builtin_rts wired-in package template-haskell mapped to template- haskell-2.10.0.0-e895139a0ffff267d412e3d0191ce93b wired-in package ghc mapped to ghc-7.10.1-325809317787a897b7a97d646ceaa3a3 wired-in package dph-seq not found. wired-in package dph-par not found. *** Chasing dependencies: Chasing modules from: *Bug.hs Stable obj: [] Stable BCO: [] Ready for upsweep [NONREC ModSummary { ms_hs_date = 2015-04-09 10:01:43.312180074 UTC ms_mod = Main, ms_textual_imps = [import (implicit) Prelude, import Language.Haskell.Exts.QQ ( dec )] ms_srcimps = [] }] *** Deleting temp files: Deleting: compile: input file Bug.hs Created temporary directory: /tmp/ghc7356_0 *** Checking old interface for Main: [1 of 1] Compiling Main ( Bug.hs, Bug.o ) *** Parser: *** Renamer/typechecker: *** Simplify: *** CorePrep: *** ByteCodeGen: Loading package ghc-prim-0.4.0.0 ... linking ... done. *** gcc: /usr/bin/gcc -fno-stack-protector -DTABLES_NEXT_TO_CODE -L/usr/lib/ghc-7.10.1/integ_2aU3IZNMF9a7mQ0OzsZ0dS --print-file-name libgmp.so Loading package integer-gmp-1.0.0.0 ... linking ... done. Loading package base-4.8.0.0 ... linking ... done. Loading package array-0.5.1.0 ... linking ... done. Loading package filepath-1.4.0.0 ... linking ... done. Loading package deepseq-1.4.1.1 ... linking ... done. Loading package time-1.5.0.1 ... linking ... done. Loading package bytestring-0.10.6.0 ... linking ... done. *** gcc: /usr/bin/gcc -fno-stack-protector -DTABLES_NEXT_TO_CODE -L/usr/lib/ghc-7.10.1/unix_G4Yo1pNtYrk8nCq1cx8P9d --print-file-name librt.so *** gcc: /usr/bin/gcc -fno-stack-protector -DTABLES_NEXT_TO_CODE -L/usr/lib/ghc-7.10.1/unix_G4Yo1pNtYrk8nCq1cx8P9d --print-file-name libutil.so *** gcc: /usr/bin/gcc -fno-stack-protector -DTABLES_NEXT_TO_CODE -L/usr/lib/ghc-7.10.1/unix_G4Yo1pNtYrk8nCq1cx8P9d --print-file-name libdl.so *** gcc: /usr/bin/gcc -fno-stack-protector -DTABLES_NEXT_TO_CODE -L/usr/lib/ghc-7.10.1/unix_G4Yo1pNtYrk8nCq1cx8P9d --print-file-name libpthread.so Loading package unix-2.7.1.0 ... linking ... done. Loading package directory-1.2.2.0 ... linking ... done. Loading package old-locale-1.0.0.7 ... linking ... done. Loading package old-time-1.1.0.3 ... linking ... done. Loading package text-1.2.0.4 ... linking ... done. Loading package polyparse-1.11 ... linking ... done. Loading package cpphs-1.19 ... linking ... done. Loading package pretty-1.1.2.0 ... linking ... done. Loading package haskell-src-exts-1.16.0.1 ... linking ... done. Loading package syb-0.4.4 ... linking ... done. Loading package template-haskell-2.10.0.0 ... linking ... done. Loading package transformers-0.4.2.0 ... linking ... done. Loading package mtl-2.2.1 ... linking ... done. Loading package nats-1 ... linking ... done. Loading package th-lift-0.7.2 ... linking ... done. Loading package containers-0.5.6.2 ... linking ... done. Loading package safe-0.3.8 ... linking ... done. Loading package th-expand-syns-0.3.0.6 ... linking ... done. Loading package th-reify-many-0.1.3 ... linking ... done. Loading package th-orphans-0.11.1 ... linking ... done. Loading package haskell-src-meta-0.6.0.9 ... linking ... done. Loading package haskell-src-exts-qq-0.6.1 ... linking ... done. Bug.hs:8:16:*** Deleting temp files: Deleting: /tmp/ghc7356_0/ghc7356_1.s Warning: deleting non-existent /tmp/ghc7356_0/ghc7356_1.s *** Deleting temp dirs: Deleting: /tmp/ghc7356_0 ghc: panic! (the 'impossible' happened) (GHC version 7.10.1 for x86_64-unknown-linux): qual_pkg haskell-src-exts-1.16.0.1 Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} on my machine: {{{ $ uname -a Linux io 3.19.3-1-ARCH #1 SMP PREEMPT Thu Mar 26 14:56:16 CET 2015 x86_64 GNU/Linux $ gcc -v Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-unknown-linux-gnu/4.9.2/lto- wrapper Target: x86_64-unknown-linux-gnu Configured with: /build/gcc/src/gcc-4.9-20150304/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 --with-system-zlib --enable-__cxa_atexit --disable- libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch --disable-libssp --enable-gnu-unique-object --enable-linker-build-id --enable-cloog-backend=isl --enable-lto --enable-plugin --enable-install- libiberty --with-linker-hash-style=gnu --disable-multilib --disable-werror --enable-checking=release Thread model: posix gcc version 4.9.2 20150304 (prerelease) (GCC) $ ghc-pkg list /usr/lib/ghc-7.10.1/package.conf.d Cabal-1.22.2.0 array-0.5.1.0 async-2.0.2 base-4.8.0.0 bin-package-db-0.0.0.0 binary-0.7.3.0 bytestring-0.10.6.0 containers-0.5.6.2 cpphs-1.19 deepseq-1.4.1.1 directory-1.2.2.0 filepath-1.4.0.0 ghc-7.10.1 ghc-paths-0.1.0.9 ghc-prim-0.4.0.0 haddock-api-2.16.0 haddock-library-1.2.0 haskeline-0.7.2.1 haskell-src-exts-1.16.0.1 haskell-src-exts-qq-0.6.1 haskell-src-meta-0.6.0.9 hoopl-3.10.0.2 hpc-0.6.0.2 integer-gmp-1.0.0.0 minisat-0.1.1 mtl-2.2.1 nats-1 old-locale-1.0.0.7 old-time-1.1.0.3 polyparse-1.11 pretty-1.1.2.0 process-1.2.3.0 rts-1.0 safe-0.3.8 satchmo-core-0.8.0 stm-2.4.4 syb-0.4.4 template-haskell-2.10.0.0 terminfo-0.4.0.1 text-1.2.0.4 th-expand-syns-0.3.0.6 th-lift-0.7.2 th-orphans-0.11.1 th-reify-many-0.1.3 time-1.5.0.1 transformers-0.4.2.0 unix-2.7.1.0 xhtml-3000.2.1 }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10279> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #10773: Add Control.Monad.IO.Class from transformers to base
by GHC 27 Nov '15

27 Nov '15

#10773: Add Control.Monad.IO.Class from transformers to base -------------------------------------+------------------------------------- Reporter: | Owner: ekmett RyanGlScott | Type: feature | Status: new request | Priority: normal | Milestone: Component: Core | Version: 7.10.2 Libraries | Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Revisions: | -------------------------------------+------------------------------------- (As proposed in a Haskell libraries mailing list thread [https://mail.haskell.org/pipermail/libraries/2015-July/026008.html here]). This Trac issue addresses one of the two suggestions made in the proposal, i.e., moving `Control.Monad.IO.Class` from `transformers` to `base`. (The second, introducing a `MonadIO Q` instance in `template-haskell`, can be dealt with depending on the result of this.) Conceptually, this change is very similar in spirit to #9664—the `MonadIO` class is a Haskell98 typeclass that has proven to be widely useful in abstracting `IO`-based functions into a type signature that can be used with monad transformer stacks. Moving `MonadIO`'s module into `base` would allow more widespread use without incurring a `transformers` dependency, and it could provide a first step for generalizing more `base` functions from `IO` to `MonadIO`. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10773> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #10394: LLVM mangler doesn't mangle AVX instructions
by GHC 27 Nov '15

27 Nov '15

#10394: LLVM mangler doesn't mangle AVX instructions -------------------------------------+------------------------------------- Reporter: dobenour | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.12.1 Component: Compiler | Version: 7.11 (LLVM) | Operating System: Unknown/Multiple Keywords: | Type of failure: Runtime crash Architecture: | Blocked By: Unknown/Multiple | Related Tickets: Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- The LLVM mangler does not currently transform AVX instructions on x86-64 platforms, due to a missing #include. Also, it is significantly more complicated than necessary, due to the file into sections (not needed anymore), and is sensitive to the details of the whitespace in the assembly. I have attached a modified mangler that I believe to be simpler and more robust. I have not tested it, though, as I do not have a recent enough version of LLVM on my machine. I am marking this as `Runtime crash' because that is what would happen if the unchanged AVX instructions made their way into the executable. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10394> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #4213: LLVM: Add support for TNTC to LLVM compiler suite
by GHC 27 Nov '15

27 Nov '15

#4213: LLVM: Add support for TNTC to LLVM compiler suite -------------------------------------+------------------------------------- Reporter: dterei | Owner: bgamari Type: feature request | Status: closed Priority: low | Milestone: 8.0.1 Component: Compiler (LLVM) | Version: 6.13 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: 9142 | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * status: new => closed * resolution: => fixed Comment: I resolved this in 5d5abdca31cdb4db5303999778fa25c4a1371084 by reworking the LLVM code generator to use LLVM 3.6's new support for "prefix data". -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4213#comment:41> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #4213: LLVM: Add support for TNTC to LLVM compiler suite
by GHC 27 Nov '15

27 Nov '15

#4213: LLVM: Add support for TNTC to LLVM compiler suite -------------------------------------+------------------------------------- Reporter: dterei | Owner: bgamari Type: feature request | Status: new Priority: low | Milestone: 8.0.1 Component: Compiler (LLVM) | Version: 6.13 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: 9142 | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * owner: dterei => bgamari -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4213#comment:40> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7450: Regression in optimisation time of functions with many patterns (6.12 to 7.4)?
by GHC 27 Nov '15

27 Nov '15

#7450: Regression in optimisation time of functions with many patterns (6.12 to 7.4)? -------------------------------------+------------------------------------- Reporter: iustin | Owner: bgamari Type: bug | Status: new Priority: normal | Milestone: 8.0.1 Component: Compiler | Version: 7.6.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D1012 Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * owner: => bgamari -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7450#comment:30> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7450: Regression in optimisation time of functions with many patterns (6.12 to 7.4)?
by GHC 27 Nov '15

27 Nov '15

#7450: Regression in optimisation time of functions with many patterns (6.12 to 7.4)? -------------------------------------+------------------------------------- Reporter: iustin | Owner: Type: bug | Status: new Priority: normal | Milestone: 8.0.1 Component: Compiler | Version: 7.6.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple performance bug | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Phab:D1012 Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * owner: bgamari => * status: patch => new -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7450#comment:29> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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