July 2013 - ghc-tickets

[GHC] #8075: `:show imports` unknown to tab-completion
by GHC 21 Jul '13

21 Jul '13

#8075: `:show imports` unknown to tab-completion ------------------------------------+------------------------------------- Reporter: hvr | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: GHCi | Version: 7.6.3 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ------------------------------------+------------------------------------- when pressing `TAB` after `:show `, `:show imports` is not offered by GHCi, i.e.: {{{ Prelude> :show args breaks editor linker packages prompt bindings context language modules prog stop Prelude> :show }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8075> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8074: `:show linker` not mentioned in `:help`
by GHC 21 Jul '13

21 Jul '13

#8074: `:show linker` not mentioned in `:help` ------------------------------------+------------------------------------- Reporter: hvr | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: GHCi | Version: 7.6.1 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ------------------------------------+------------------------------------- GHCi's current `:help` output doesn't mention the `:show linker` sub- command, for displaying the current linker state -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8074> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8072: Optimizations change result of div for Word
by GHC 21 Jul '13

21 Jul '13

#8072: Optimizations change result of div for Word -----------------------------+------------------------------------- Reporter: Khudyakov | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.3 Keywords: | Operating System: Unknown/Multiple Architecture: x86 | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | -----------------------------+------------------------------------- Here is test case {{{ import Data.Word main :: IO () main = do print $ (maxBound :: Word) `div` 101 }}} And result of execution {{{ $ ghc -fforce-recomp -O2 --make reduce.hs && ./reduce [1 of 1] Compiling Main ( reduce.hs, reduce.o ) Linking reduce ... 2891661149 @{debian:0}~/qqq/mwc $ ghc -fforce-recomp --make reduce.hs && ./reduce [1 of 1] Compiling Main ( reduce.hs, reduce.o ) Linking reduce ... 42524428 }}} Bug is only present on 32-bit systems. It goes away if rewrite rules are disable with -fno-enable-rewrite-rules or anything but maxBound is used as first argument or second argument is forced to be a funcion argument. So it could be bug in constant folding. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8072> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #6050: Documentation for option -Wall and warning -fwarn-unrecognised-pragmas
by GHC 21 Jul '13

21 Jul '13

#6050: Documentation for option -Wall and warning -fwarn-unrecognised-pragmas --------------------------------------+------------------------------------ Reporter: asr | Owner: Type: bug | Status: closed Priority: normal | Milestone: _|_ Component: Documentation | Version: 7.6.3 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: Documentation bug | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: --------------------------------------+------------------------------------ Changes (by igloo): * status: new => closed * resolution: => fixed Comment: Thanks for the report; fixed by commit 7cbce1d2e4f076b2e53bbec93cdbdcf7e541a505 {{{ Author: Ian Lynagh <ian(a)well-typed.com> Date: Sun Jul 21 19:43:40 2013 +0100 Sync the list of default warnings with reality; fixes #8060. }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/6050#comment:6> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7978: Profiling broken
by GHC 21 Jul '13

21 Jul '13

#7978: Profiling broken --------------------------------------------+------------------------------ Reporter: gmainland | Owner: Type: bug | Status: new Priority: highest | Milestone: 7.8.1 Component: Compiler | Version: 7.7 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: GHC doesn't work at all | Unknown/Multiple Test Case: | Difficulty: Unknown Blocking: | Blocked By: | Related Tickets: --------------------------------------------+------------------------------ Changes (by simonmar): * priority: normal => highest * milestone: => 7.8.1 Comment: release blocker. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7978#comment:6> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7883: enable GHC LLVM backend to use LLVM provided CAS / Atomicity primitives?
by GHC 21 Jul '13

21 Jul '13

#7883: enable GHC LLVM backend to use LLVM provided CAS / Atomicity primitives? -------------------------------------+------------------------------------ Reporter: carter | Owner: carter Type: feature request | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.7 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: -------------------------------------+------------------------------------ Comment (by carter): Theres a few other bits that need to be added to the ticket based upon the discussion on list, but one that hasn't been addressed is how to support both compiling to a "sequential" version as well as the "-threaded" ATOMIC analogues based upon which RTS is linked into the application -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7883#comment:10> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7978: Profiling broken
by GHC 20 Jul '13

20 Jul '13

#7978: Profiling broken --------------------------------------------+------------------------------ Reporter: gmainland | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.7 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: GHC doesn't work at all | Unknown/Multiple Test Case: | Difficulty: Unknown Blocking: | Blocked By: | Related Tickets: --------------------------------------------+------------------------------ Comment (by ezyang): There are also a multitude of profasm/prof/profthreaded tests which are still failing. Here is a partial list: {{{ codeGen/should_run cgrun057 [bad stderr] (profasm,profthreaded) concurrent/should_run T367 [bad exit code] (profasm,ghci,profthreaded) indexed-types/should_compile T4492 [exit code non-0] (profasm) indexed-types/should_compile T7837 [stderr mismatch] (profasm) profiling/should_run T680 [bad profile] (profasm,profthreaded,prof) profiling/should_run callstack001 [bad stdout] (prof) profiling/should_run prof-doc-last [bad profile] (profasm,profthreaded,prof) quasiquotation/qq007 qq007 [exit code non-0] (profasm) quasiquotation/qq008 qq008 [exit code non-0] (profasm) simplCore/should_compile T5550 [exit code non-0] (profasm) simplCore/should_compile T7702 [exit code non-0] (profasm) }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7978#comment:5> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7970: Thread GC frees roots before thread actually finishes
by GHC 20 Jul '13

20 Jul '13

#7970: Thread GC frees roots before thread actually finishes -------------------------------------+------------------------------------ Reporter: joeyadams | Owner: simonmar Type: bug | Status: closed Priority: high | Milestone: 7.8.1 Component: Runtime System | Version: 7.6.3 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: Runtime crash | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: 7170 -------------------------------------+------------------------------------ Comment (by ezyang): Hey Simon, you added a test for this, but (1) it is not being run with the regular test suite, and (2) it is failing. I think you may have forgotten to check in the expected output. {{{ commit 5bcf82fd981c9bfc0277d35a0d5d2db8d2f7d073 Author: Simon Marlow <marlowsd(a)gmail.com> Date: Tue Jul 2 11:27:20 2013 +0100 Add test for #7970 }}} There is also a mysterious ./tests/concurrent/should_run/.hpc.conc067 which tagged along with that commit, which I do not know if it should be there; it seems unrelated. {{{ =====> T7970(normal) 3084 of 3686 [0, 0, 0] cd ./concurrent/should_run && '/srv/code/ghc-build-sandbox/inplace/bin /ghc-stage2' -fforce-recomp -dcore-lint -dcmm-lint -dno-debug-output -no- user-package-db -rtsopts -fno-ghci-history -o T7970 T7970.hs >T7970.comp.stderr 2>&1 cd ./concurrent/should_run && ./T7970 </dev/null >T7970.run.stdout 2>T7970.run.stderr Actual stdout output differs from expected: --- /dev/null 2013-07-07 10:51:38.467280914 -0700 +++ ./concurrent/should_run/T7970.run.stdout 2013-07-20 15:22:26.355123844 -0700 @@ -0,0 +1,4 @@ +IORef still alive, and contains 'x' +caught exception: thread blocked indefinitely in an MVar operation +IORef still alive, and contains 'x' +'x' }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7970#comment:10> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7399: Test Posix004 fails in test-suite
by GHC 20 Jul '13

20 Jul '13

#7399: Test Posix004 fails in test-suite ------------------------------------------------+-------------------------- Reporter: paulh | Owner: ezyang Type: bug | Status: merge Priority: normal | Milestone: 7.8.1 Component: libraries/unix | Version: 7.6.1 Resolution: | Keywords: Operating System: Linux | Architecture: x86_64 Type of failure: Incorrect result at runtime | (amd64) Test Case: | Difficulty: Blocking: | Unknown | Blocked By: | Related Tickets: ------------------------------------------------+-------------------------- Changes (by ezyang): * status: new => merge Comment: {{{ commit 5692f5b8ed9e36ea7da4376fc7169354c55007bd Author: Edward Z. Yang <ezyang(a)mit.edu> Date: Sat Jul 20 14:15:15 2013 -0700 Fix #7399. Signed-off-by: Edward Z. Yang <ezyang(a)mit.edu> }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7399#comment:5> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #3658: Dynamically link GHCi (and use system linker) on platforms that support it
by GHC 20 Jul '13

20 Jul '13

#3658: Dynamically link GHCi (and use system linker) on platforms that support it -------------------------------------------------+------------------------- Reporter: simonmar | Owner: igloo Type: task | Status: new Priority: high | Milestone: 7.8.1 Component: GHCi | Version: Resolution: | 6.10.4 Operating System: Unknown/Multiple | Keywords: Type of failure: None/Unknown | Architecture: Test Case: | Unknown/Multiple Blocking: 781, 1883, 2283, 3242, 3333, | Difficulty: 3372, 3654, 4244, 5062, 5197, 5435, 6107, | Unknown 7043, 7056, 7072, 7097, 7103, 7134, 7316, | Blocked By: 5987 7329, 7389, 7475, 7687, 7889 | Related Tickets: -------------------------------------------------+------------------------- Comment (by igloo): Current plan/status is in DynamicGhcPrograms. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/3658#comment:37> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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