January 2016 - ghc-tickets

Re: [GHC] #1853: hpc mix files for Main modules overwrite each other
by GHC 04 Jan '16

04 Jan '16

#1853: hpc mix files for Main modules overwrite each other ----------------------------------+-------------------------------------- Reporter: guest | Owner: Type: bug | Status: new Priority: lowest | Milestone: 8.0.1 Component: Code Coverage | Version: 6.8.1 Resolution: | Keywords: Operating System: Linux | Architecture: x86_64 (amd64) Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | ----------------------------------+-------------------------------------- Comment (by ezyang): Hello all, I was recently looking at the Cabal code which is responsible for setting `hpcdir`, and I am a little confused by this ticket: why is it NOT sufficient to just specify different hpc directories for each main module? Does this have to do with wanting to combine tix files together? -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/1853#comment:24> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #11277: Undeclared `CCS_MAIN` in unregisterised build
by GHC 04 Jan '16

04 Jan '16

#11277: Undeclared `CCS_MAIN` in unregisterised build -------------------------------------+------------------------------------- Reporter: erikd | Owner: Type: bug | Status: new Priority: normal | Milestone: 8.0.1 Component: Compiler | Version: 7.11 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: -------------------------------------+------------------------------------- The unregisterised build currently fails with: {{{ "inplace/bin/ghc-stage1" -static -prof -O -H64m -Wall -Iincludes -Iincludes/dist -Iincludes/dist-derivedconstants/header -Iincludes/dist-ghcconstants/header -Irts -Irts/dist/build -DCOMPILING_RTS -this-package-key rts -optc-DNOSMP -dcmm-lint -i -irts -irts/dist/build -irts/dist/build/autogen -Irts/dist/build -Irts/dist/build/autogen -O2 c rts/PrimOps.cmm -o rts/dist/build/PrimOps.p_o /tmp/ghc12993_0/ghc_3.hc: In function ‘clB_entry’: /tmp/ghc12993_0/ghc_3.hc:2983:24: error: error: ‘CCS_MAIN’ undeclared (first use in this function) *((P_)(_cly+8)) = (W_)&CCS_MAIN; ^ /tmp/ghc12993_0/ghc_3.hc:2983:24: error: note: each undeclared identifier is reported only once for each function it appears in /tmp/ghc12993_0/ghc_3.hc: In function ‘stg_mkApUpd0zh’: /tmp/ghc12993_0/ghc_3.hc:3031:24: error: error: ‘CCS_MAIN’ undeclared (first use in this function) *((P_)(_clP+8)) = (W_)&CCS_MAIN; ^ /tmp/ghc12993_0/ghc_3.hc: In function ‘stg_clearCCSzh’: /tmp/ghc12993_0/ghc_3.hc:3323:40: error: error: ‘CCS_MAIN’ undeclared (first use in this function) CCCS = (struct CostCentreStack_ *)(W_)&CCS_MAIN; }}} which is almost certainly a result of commit c8c44fd91b509b9eb6. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11277> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #4879: Deprecate exports
by GHC 04 Jan '16

04 Jan '16

#4879: Deprecate exports -------------------------------------+------------------------------------- Reporter: basvandijk | Owner: Type: feature request | Status: new Priority: normal | Milestone: 8.2.1 Component: Compiler | Version: 7.0.1 Resolution: | Keywords: deprecate | warning Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #10071 #2119 | Differential Rev(s): Phab:D638 Wiki Page: | -------------------------------------+------------------------------------- Changes (by bgamari): * priority: high => normal * status: infoneeded => new * milestone: 8.0.1 => 8.2.1 Comment: This clearly won't happen for 8.0. Perhaps we'll have better luck for 8.2. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4879#comment:27> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #10379: Prefix syntax for promoted list kind isn't parsed properly
by GHC 04 Jan '16

04 Jan '16

#10379: Prefix syntax for promoted list kind isn't parsed properly -------------------------------------+------------------------------------- Reporter: cactus | Owner: Type: bug | Status: new Priority: low | Milestone: Component: Compiler | Version: 7.10.1 (Parser) | Operating System: Unknown/Multiple Keywords: | Type of failure: GHC rejects Architecture: | valid program Unknown/Multiple | Blocked By: Test Case: | Related Tickets: Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- (Originally from https://stackoverflow.com/questions/27673578/) Given the following input file: {{{ {-# LANGUAGE KindSignatures, GADTs, DataKinds, TypeOperators #-} data Foo1 :: [*] -> * where data Foo2 :: ([] *) -> * where }}} it fails on the definition of `Foo2`: {{{ list-promote2.hs:4:16: parse error on input `]' }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10379> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #4426: Simplify the rules for implicit quantification
by GHC 03 Jan '16

03 Jan '16

#4426: Simplify the rules for implicit quantification -------------------------------------+------------------------------------- Reporter: simonpj | Owner: bgamari Type: feature request | Status: closed Priority: highest | Milestone: 8.0.1 Component: Compiler | Version: 6.12.3 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #7880 | Differential Rev(s): Phab:D211, Wiki Page: | Phab:D1615 -------------------------------------+------------------------------------- Comment (by simonpj): Ah well, GHC 8.0 implements the simpler quantification rules, and now just says {{{ T4426.hs:5:29: error: Not in scope: type variable `b' }}} which at least isn't misleading! -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4426#comment:31> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #10554: Replacing existing attachment with the same name doesn't work
by GHC 03 Jan '16

03 Jan '16

#10554: Replacing existing attachment with the same name doesn't work -------------------------------------+------------------------------------- Reporter: thomie | Owner: hvr Type: bug | Status: new Priority: normal | Milestone: Component: Trac & Git | Version: 7.10.1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Blocked By: Test Case: | Related Tickets: Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/10554> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #11288: Thread blocked indefinitely in a Mvar operation
by GHC 03 Jan '16

03 Jan '16

#11288: Thread blocked indefinitely in a Mvar operation --------------------------------+------------------------------------------ Reporter: ygor_2 | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.10.2 Keywords: | Operating System: Windows Architecture: x86 | Type of failure: Installing GHC failed Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: --------------------------------+------------------------------------------ During the stack upgrade process the following error occurred: A specified local key could not be updated from keyserver. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11288> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #11280: getCurrentDirectory should raise better error string when cwd doesn't exist
by GHC 03 Jan '16

03 Jan '16

#11280: getCurrentDirectory should raise better error string when cwd doesn't exist -------------------------------------+------------------------------------- Reporter: ezyang | Owner: Type: bug | Status: new Priority: low | Milestone: ⊥ Component: | Version: 7.11 libraries/directory | Keywords: easy | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Run this script in a directory which no longer exists: {{{ import System.Directory main = getCurrentDirectory >>= putStrLn }}} Currently the error looks like: {{{ ezyang@sabre:~/test$ ./test bash: ./test: No such file or directory }}} It would be nicer to give a better message in this case. Originally reported https://github.com/haskell/cabal/issues/2902 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11280> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #11340: linker_unload test fails on ARM
by GHC 03 Jan '16

03 Jan '16

#11340: linker_unload test fails on ARM --------------------------------+------------------------------------- Reporter: bgamari | Owner: Type: bug | Status: new Priority: normal | Milestone: 8.0.1 Component: Compiler | Version: 7.10.3 Keywords: | Operating System: Unknown/Multiple Architecture: arm | Type of failure: Runtime crash Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: --------------------------------+------------------------------------- The `linker_unload` test segfaults on ARM. I thought I had fixed it in #11299 but apparently not. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/11340> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #2258: ghc --cleanup
by GHC 03 Jan '16

03 Jan '16

#2258: ghc --cleanup -------------------------------------+------------------------------------- Reporter: claus | Owner: Type: feature request | Status: new Priority: lowest | Milestone: 8.0.1 Component: Compiler | Version: 6.8.2 Resolution: | Keywords: newcomer Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: #4114 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by shubhaml): I'm willing to help @bheklilr with this. I'm a first-time contributor too. So far I've created a {{{--cleanup}}} flag which does exactly what {{{--make}}} does. I need to figure out the subsequent parts. One idea is that {{{hi}}} and {{{o}}} files will be deleted only if target directories are not specified using {{{-odir}}} and {{{-hidir}}} (since the target directories could be {{{/dev/null}}}). In this case these files are put in the same directory with the same name as the source file, and will be deleted. Other generated files from {{{-keep-*-files}}} will be preserved. So running with {{{ghc --cleanup}}} will, in effect, only create executables, and possibly some intermediate files other than {{{hi}}} and {{{o}}}. Is this a good idea? Also, have I missed something? -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2258#comment:26> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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