October 2014 - ghc-tickets

Re: [GHC] #7928: GHC fails to terminate while compiling with optimization level 2
by GHC 07 Oct '14

07 Oct '14

#7928: GHC fails to terminate while compiling with optimization level 2 -------------------------------------+------------------------------------- Reporter: Ptharien's | Owner: Flame | Status: new Type: bug | Milestone: Priority: normal | Version: 7.6.3 Component: Compiler | Keywords: Resolution: | Architecture: x86_64 (amd64) Operating System: | Difficulty: Unknown Unknown/Multiple | Blocked By: Type of failure: Other | Related Tickets: #7898, #7944 Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by MikolajKonarski): * difficulty: => Unknown Comment: Given that it may be related to #8852 that was fixed in HEAD, does it still fail? Could you try HEAD? -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7928#comment:4> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

1 0

Re: [GHC] #7068: Extensive Memory usage (regression)
by GHC 07 Oct '14

07 Oct '14

#7068: Extensive Memory usage (regression) -------------------------------------+------------------------------------- Reporter: waldheinz | Owner: simonpj Type: bug | Status: closed Priority: normal | Milestone: 7.8.4 Component: Compiler | Version: 7.4.1 Resolution: fixed | Keywords: Operating System: | Architecture: Unknown/Multiple Unknown/Multiple | Difficulty: Unknown Type of failure: Compile- | Blocked By: time performance bug | Related Tickets: Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by tibbe): * milestone: 7.10.1 => 7.8.4 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7068#comment:17> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

1 0

[GHC] #8980: ghc-7.8.1 -O2 eats excessive amounts of RAM, highlighting-kate and pandoc-citeproc
by GHC 07 Oct '14

07 Oct '14

#8980: ghc-7.8.1 -O2 eats excessive amounts of RAM, highlighting-kate and pandoc- citeproc ------------------------------------+------------------------------------- Reporter: slyfox | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.1 Keywords: | Operating System: Unknown/Multiple Architecture: Unknown/Multiple | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ------------------------------------+------------------------------------- It's mostly a http://www.haskell.org/pipermail/ghc- devs/2014-March/004363.html rechecked on ghc-7.8.1: I attempted to leave original packages as-is. Steps to reproduce: {{{ $ cd /tmp/ $ wget -c http://code.haskell.org/~slyfox/selfcontained-eater- ghc-7.8-rc2.tar.gz $ tar -xzf selfcontained-eater-ghc-7.8-rc2.tar.gz $ cd selfcontained-eater-ghc-7.8-rc2 $ ./mk.sh ... [279 of 452] Compiling Text.Highlighting.Kate.Syntax.Asp ( highlighting- kate-0.5.6.1/Text/Highlighting/Kate/Syntax/Asp.hs, highlighting- kate-0.5.6.1/Text/Highlighting/Kate/Syntax/Asp.o ) stack overflow: use +RTS -K<size> to increase it }}} I did prepare this testcase for ghc-7.6.3 where it failed only on last 452 module. '''./mk.sh''' is a dumb script calling '''ghc -O2''' + cabal-generated bits. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8980> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

1 4

Re: [GHC] #7898: SpecConstr explodes when compiling module BSP of frag-1.1.2
by GHC 07 Oct '14

07 Oct '14

#7898: SpecConstr explodes when compiling module BSP of frag-1.1.2 -------------------------------------+------------------------------------- Reporter: tinctorius | Owner: Type: bug | Status: closed Priority: normal | Milestone: 7.8.4 Component: Compiler | Version: 7.6.3 Resolution: fixed | Keywords: Operating System: | Architecture: Unknown/Multiple Unknown/Multiple | Difficulty: Unknown Type of failure: Compile- | Blocked By: time crash | Related Tickets: Test Case: | Blocking: | Differential Revisions: | -------------------------------------+------------------------------------- Changes (by tibbe): * milestone: => 7.8.4 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7898#comment:18> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

1 0

[GHC] #8852: 7.8.1 uses a lot of memory when compiling attoparsec programs using <|>
by GHC 07 Oct '14

07 Oct '14

#8852: 7.8.1 uses a lot of memory when compiling attoparsec programs using <|> -------------------------+------------------------------------------------- Reporter: | Owner: joelteon | Status: new Type: bug | Milestone: Priority: | Version: 7.8.1-rc2 normal | Operating System: Unknown/Multiple Component: | Type of failure: Compile-time performance bug Compiler | Test Case: Keywords: | Blocking: Architecture: | Unknown/Multiple | Difficulty: | Unknown | Blocked By: | Related Tickets: | -------------------------+------------------------------------------------- To reproduce, install a pre-`0.11.2.1` version of attoparsec. This bug was worked around in 0.11.2.1 by removing the `INLINE` on `plus` in attoparsec. With this test program: {{{#!haskell {-# LANGUAGE OverloadedStrings #-} import Control.Applicative import Data.Attoparsec.Text import Data.Text (Text) parser :: Parser Text parser = string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" <|> string "a" main :: IO () main = parseTest parser "a" }}} and using GHC 7.8.1.rc2: Compiling using `-O2`, GHC tops out at ~1GB of RAM and takes 25s. Using `-O0`, GHC takes 0.47s and uses <150MB of RAM. Compare this with GHC 7.6.3: Compiling using `-O2`, GHC uses <150MB and takes 3.7s. Memory usage is similar with `-O0` although compile time goes down to 0.36s. An extreme version of this bug can be found in the `thyme` package here: https://github.com/liyang/thyme/blob/master/src/Data/Thyme/Format.hs#L589-L…. Compiling that module with an unfixed attoparsec makes GHC use all available memory and stall out, forcing kill -9. Replacing the function body with `undefined` makes the package compile as expected. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8852> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

1 10

[GHC] Batch modify: #5942, #8621, #8859, #9393, #3980, #5063, #1487, #8293
by GHC 07 Oct '14

07 Oct '14

Batch modification to #5942, #8621, #8859, #9393, #3980, #5063, #1487, #8293 by thoughtpolice: component to Core Libraries Comment: Moving over to new owning component 'Core Libraries'. -- Tickets URL: <http://ghc.haskell.org/trac/ghc/query?id=5942%2C8621%2C8859%2C9393%2C3980%2…> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

1 0

[GHC] Batch modify: #427, #2280, #3575, #3620, #5278
by GHC 07 Oct '14

07 Oct '14

Batch modification to #427, #2280, #3575, #3620, #5278 by thoughtpolice: component to Core Libraries Comment: Moving over to new owning component 'Core Libraries'. -- Tickets URL: <http://ghc.haskell.org/trac/ghc/query?id=427%2C2280%2C3575%2C3620%2C5278> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

1 0

[GHC] Batch modify: #3998, #5761, #7997, #8419, #8844, #8943, #9135, #9292, #9322, #3649, #5376, #2123
by GHC 07 Oct '14

07 Oct '14

Batch modification to #3998, #5761, #7997, #8419, #8844, #8943, #9135, #9292, #9322, #3649, #5376, #2123 by thoughtpolice: component to Core Libraries Comment: Moving over to new owning component 'Core Libraries'. -- Tickets URL: <http://ghc.haskell.org/trac/ghc/query?id=3998%2C5761%2C7997%2C8419%2C8844%2…> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

1 0

[GHC] Batch modify: #1062, #7666
by GHC 07 Oct '14

07 Oct '14

Batch modification to #1062, #7666 by thoughtpolice: component to Core Libraries Comment: Moving over to new owning component 'Core Libraries'. -- Tickets URL: <http://ghc.haskell.org/trac/ghc/query?id=1062%2C7666> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

1 0

[GHC] Batch modify: #8695, #9079
by GHC 07 Oct '14

07 Oct '14

Batch modification to #8695, #9079 by thoughtpolice: component to Core Libraries Comment: Moving over to new owning component 'Core Libraries'. -- Tickets URL: <http://ghc.haskell.org/trac/ghc/query?id=8695%2C9079> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

1 0