August 2013 - ghc-tickets

Re: [GHC] #4801: Typechecker performance regression 6.12 -> 7.0.1
by GHC 29 Aug '13

29 Aug '13

#4801: Typechecker performance regression 6.12 -> 7.0.1 --------------------------------------------+------------------------------ Reporter: simonmar | Owner: simonpj Type: bug | Status: closed Priority: high | Milestone: 7.0.2 Component: Compiler (Type checker) | Version: 7.0.1 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Test Case: perf/compiler/T4801 | Difficulty: Unknown Blocking: | Blocked By: | Related Tickets: --------------------------------------------+------------------------------ Comment (by jstolarek): Yes, at some point this test was sometimes failing for me, but for the last 3 weeks I've been getting clean validation runs. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4801#comment:7> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #4801: Typechecker performance regression 6.12 -> 7.0.1
by GHC 29 Aug '13

29 Aug '13

#4801: Typechecker performance regression 6.12 -> 7.0.1 --------------------------------------------+------------------------------ Reporter: simonmar | Owner: simonpj Type: bug | Status: closed Priority: high | Milestone: 7.0.2 Component: Compiler (Type checker) | Version: 7.0.1 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: None/Unknown | Unknown/Multiple Test Case: perf/compiler/T4801 | Difficulty: Unknown Blocking: | Blocked By: | Related Tickets: --------------------------------------------+------------------------------ Changes (by goldfire): * difficulty: => Unknown Comment: The test T4801 is sometimes failing with "stat too good". I know Jan Stolarek was looking into this over the summer. Here are my numbers from MacOS 10.7.5 (x86_64): {{{ max_bytes_used value is too high: Expected max_bytes_used: 21657520 +/-5% Lower bound max_bytes_used: 20574644 Upper bound max_bytes_used: 22740396 Actual max_bytes_used: 26596432 peak_megabytes_allocated value is too high: Expected peak_megabytes_allocated: 58 +/-1% Lower bound peak_megabytes_allocated: 57 Upper bound peak_megabytes_allocated: 59 Actual peak_megabytes_allocated: 72 bytes allocated value is too low: (If this is because you have improved GHC, please update the test so that GHC doesn't regress again) Expected bytes allocated: 510938976 +/-5% Lower bound bytes allocated: 485392027 Upper bound bytes allocated: 536485925 Actual bytes allocated: 458701280 *** unexpected failure for T4801(normal) }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/4801#comment:6> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7478: setSessionDynFlags does not always work
by GHC 29 Aug '13

29 Aug '13

#7478: setSessionDynFlags does not always work -------------------------------------+------------------------------------ Reporter: edsko | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.6.2 Component: Compiler | Version: 7.6.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: ghc-api/T7478 | Blocked By: Blocking: | Related Tickets: -------------------------------------+------------------------------------ Changes (by goldfire): * owner: simonmar => * status: closed => new * resolution: fixed => Comment: This fails on MacOS 10.7.5 and 10.8.4. Here is the output from 10.7.5: {{{ Wrong exit code (expected 0 , actual 2 ) Stdout: ----- 0 ------ (0,"[1 of 2] Compiling B ( B.hs, B.o )") (0,"[2 of 2] Compiling Main ( A.hs, A.o )") ----- 1 ------ (1,"[2 of 2] Compiling Main ( A.hs, A.o )") ----- 2 ------ (2,"[1 of 1] Compiling Main ( C.hs, C.o )") (2,"Linking A ...") Stderr: T7478: T7478: phase `Linker' failed (exitcode = 1) make[1]: *** [T7478] Error 1 *** unexpected failure for T7478(normal) }}} Please let me know if any further info is needed! -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7478#comment:7> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #2507: quotation characters in error messages
by GHC 28 Aug '13

28 Aug '13

#2507: quotation characters in error messages -------------------------------------+------------------------------------ Reporter: Isaac Dupree | Owner: Type: feature request | Status: new Priority: lowest | Milestone: 7.6.2 Component: Compiler | Version: 6.8.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: #2811,#3398 -------------------------------------+------------------------------------ Comment (by goldfire): Here is the diff in the output: {{{ T2507.hs:5:7: - Couldn't match expected type `Int' with actual type `()' + Couldn't match expected type ‛Int’ with actual type ‛()’ In the expression: () - In an equation for `foo': foo = () + In an equation for ‛foo’: foo = () }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2507#comment:23> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #2507: quotation characters in error messages
by GHC 28 Aug '13

28 Aug '13

#2507: quotation characters in error messages -------------------------------------+------------------------------------ Reporter: Isaac Dupree | Owner: Type: feature request | Status: new Priority: lowest | Milestone: 7.6.2 Component: Compiler | Version: 6.8.3 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: #2811,#3398 -------------------------------------+------------------------------------ Changes (by goldfire): * status: closed => new * resolution: fixed => Comment: Test T2507 is failing both on MacOS 10.7.5 and 10.8.4. I have no special locale settings, to my knowledge. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/2507#comment:22> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7684: cgrun071 segfaults
by GHC 28 Aug '13

28 Aug '13

#7684: cgrun071 segfaults ----------------------------------+---------------------------------- Reporter: tibbe | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.8.1 Component: Compiler | Version: 7.7 Resolution: | Keywords: Operating System: MacOS X | Architecture: x86_64 (amd64) Type of failure: Runtime crash | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: ----------------------------------+---------------------------------- Changes (by goldfire): * owner: simonmar => * status: closed => new * resolution: fixed => Comment: I also can report failure of this test on MacOS 10.7.5. Reopening the ticket... -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7684#comment:8> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7367: Optimiser / Linker Problem on amd64
by GHC 28 Aug '13

28 Aug '13

#7367: Optimiser / Linker Problem on amd64 --------------------------------------------+------------------------------ Reporter: wurmli | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.8.1 Component: Build System | Version: 7.6.1 Resolution: | Keywords: Operating System: Linux | Architecture: x86_64 Type of failure: Runtime performance bug | (amd64) Test Case: | Difficulty: Unknown Blocking: | Blocked By: | Related Tickets: --------------------------------------------+------------------------------ Comment (by wurmli): May I add to your consideration the following simple example whith the same structure and behaviour: {{{ -- ghc --make -threaded -O2 -fllvm -rtsopts heapAndSpeed.hs -- ./headAndSpeed +RTS -s {-# LANGUAGE BangPatterns #-} import System.Environment import Control.Applicative import Control.Monad import Control.Monad.ST import qualified Data.STRef as VSM ------------------------------------------------------------------- -- Increment counter by 1 acc1 :: VSM.STRef s ( Int , Int ) -> ST s () acc1 !v = do{ (!k,!n) <- VSM.readSTRef v; VSM.writeSTRef v (k+1,n) } -- Increment counter until limit whileModify1 :: VSM.STRef s ( Int , Int ) -> ST s () whileModify1 !v = do !go <- do{ (k,n) <- VSM.readSTRef v; return (compare k n)} case go of LT -> do {acc1 v; whileModify1 v} EQ -> return () GT -> return () testAcc :: Int -> (Int,Int) testAcc n = runST $ do v <- VSM.newSTRef (0,n) whileModify1 v VSM.readSTRef v main = do let k = 20000000 putStrLn $ show $ testAcc k }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7367#comment:11> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7768: "untracked content" in fresh clone of haskeline
by GHC 28 Aug '13

28 Aug '13

#7768: "untracked content" in fresh clone of haskeline ---------------------------------+------------------------------------ Reporter: goldfire | Owner: Type: bug | Status: new Priority: normal | Milestone: 7.8.1 Component: Build System | Version: 7.7 Resolution: | Keywords: Operating System: MacOS X | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: ---------------------------------+------------------------------------ Comment (by goldfire): This seems related to the funny folder name visible here: https://github.com/ghc/packages-haskeline/tree/master/tests I can also say that the problem happens on MacOS 10.8.4 but not 10.7.5. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7768#comment:4> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7918: SrcSpan's associated with expanded quasi-quotes are inconsistent
by GHC 28 Aug '13

28 Aug '13

#7918: SrcSpan's associated with expanded quasi-quotes are inconsistent -------------------------------------+------------------------------------ Reporter: edsko | Owner: edsko Type: bug | Status: new Priority: high | Milestone: 7.8.1 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: -------------------------------------+------------------------------------ Changes (by simonpj): * priority: normal => high * milestone: => 7.8.1 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7918#comment:7> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7918: SrcSpan's associated with expanded quasi-quotes are inconsistent
by GHC 28 Aug '13

28 Aug '13

#7918: SrcSpan's associated with expanded quasi-quotes are inconsistent -------------------------------------+------------------------------------ Reporter: edsko | Owner: edsko Type: bug | 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 simonpj): Thanks for taking this edsko. It can't be too hard! Simon -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7918#comment:6> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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