October 2013 - ghc-tickets

Re: [GHC] #3333: GHCi doesn't load weak symbols
by GHC 25 Oct '13

25 Oct '13

#3333: GHCi doesn't load weak symbols ---------------------------------+----------------------------------------- Reporter: heatsink | Owner: Type: bug | Status: patch Priority: high | Milestone: 7.8.1 Component: GHCi | Version: 6.10.4 Resolution: | Keywords: weak, dynamic loading Operating System: Linux | Architecture: x86 Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: 3658 Blocking: | Related Tickets: ---------------------------------+----------------------------------------- Comment (by thoughtpolice): I'm about to push some stuff, so I will put this on my queue. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/3333#comment:36> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8476: Kind mismatch panic
by GHC 25 Oct '13

25 Oct '13

#8476: Kind mismatch panic --------------------------------+--------------------------------------- Reporter: DMcGill | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.3 Keywords: panic, kinds | Operating System: Unknown/Multiple Architecture: x86 | Type of failure: Compile-time crash Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | --------------------------------+--------------------------------------- The following code caused a GHC panic and so I am duly reporting it. I got it down to a reasonably minimal demonstrating case. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8476> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #3333: GHCi doesn't load weak symbols
by GHC 25 Oct '13

25 Oct '13

#3333: GHCi doesn't load weak symbols ---------------------------------+----------------------------------------- Reporter: heatsink | Owner: Type: bug | Status: patch Priority: high | Milestone: 7.8.1 Component: GHCi | Version: 6.10.4 Resolution: | Keywords: weak, dynamic loading Operating System: Linux | Architecture: x86 Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: 3658 Blocking: | Related Tickets: ---------------------------------+----------------------------------------- Changes (by simonpj): * status: new => patch -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/3333#comment:35> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #6084: Add stg_ap_pnnv and related call patterns
by GHC 25 Oct '13

25 Oct '13

#6084: Add stg_ap_pnnv and related call patterns -------------------------------------+------------------------------------ Reporter: SimonMeier | Owner: Type: feature request | Status: closed Priority: normal | Milestone: 7.8.1 Component: Runtime System | Version: 7.4.1 Resolution: fixed | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: 8313 | Related Tickets: -------------------------------------+------------------------------------ Changes (by simonmar): * status: new => closed * resolution: => fixed Comment: comments: 9026c77a07533bda3773c3c3f3df1c6592bc80c7 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/6084#comment:18> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7762: when using lots of memory: internal error: evacuate(static): strange closure type 4
by GHC 25 Oct '13

25 Oct '13

#7762: when using lots of memory: internal error: evacuate(static): strange closure type 4 -----------------------------------+---------------------------------- Reporter: rthiemann | Owner: simonmar Type: bug | Status: closed Priority: highest | Milestone: 7.8.1 Component: Runtime System | Version: 7.0.4 Resolution: fixed | Keywords: Operating System: Linux | Architecture: x86_64 (amd64) Type of failure: Runtime crash | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: -----------------------------------+---------------------------------- Changes (by simonmar): * status: new => closed * resolution: => fixed -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7762#comment:10> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7762: when using lots of memory: internal error: evacuate(static): strange closure type 4
by GHC 25 Oct '13

25 Oct '13

#7762: when using lots of memory: internal error: evacuate(static): strange closure type 4 -----------------------------------+---------------------------------- Reporter: rthiemann | Owner: simonmar Type: bug | Status: new Priority: highest | Milestone: 7.8.1 Component: Runtime System | Version: 7.0.4 Resolution: | Keywords: Operating System: Linux | Architecture: x86_64 (amd64) Type of failure: Runtime crash | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: -----------------------------------+---------------------------------- Comment (by Simon Marlow <marlowsd@…>): In [changeset:"36b042fbf60210ab6859d96e5b4b5e121085816d/ghc"]: {{{ #!CommitTicketReference repository="ghc" revision="36b042fbf60210ab6859d96e5b4b5e121085816d" Make integer overflow less likely to happen (#7762) The particular problematic code in #7762 was this: nat newSize = size - n; char *freeAddr = MBLOCK_ROUND_DOWN(bd->start); freeAddr += newSize * MBLOCK_SIZE; ^^^^^^^^^^^^^^^^^^^^^^ OVERFLOW!!! For good measure, I'm going to fix the bug twice. This patch fixes the class of bugs of this kind, by making sure that any expressions involving BLOCK_SIZE or MBLOCK_SIZE are promoted to unsigned long. In a separate patch, I'll fix a bunch of individual instances (including the one above). }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7762#comment:8> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7762: when using lots of memory: internal error: evacuate(static): strange closure type 4
by GHC 25 Oct '13

25 Oct '13

#7762: when using lots of memory: internal error: evacuate(static): strange closure type 4 -----------------------------------+---------------------------------- Reporter: rthiemann | Owner: simonmar Type: bug | Status: new Priority: highest | Milestone: 7.8.1 Component: Runtime System | Version: 7.0.4 Resolution: | Keywords: Operating System: Linux | Architecture: x86_64 (amd64) Type of failure: Runtime crash | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: -----------------------------------+---------------------------------- Comment (by Simon Marlow <marlowsd@…>): In [changeset:"b724cd41a0aa1c650a48843efac42e85861eb9c6/ghc"]: {{{ #!CommitTicketReference repository="ghc" revision="b724cd41a0aa1c650a48843efac42e85861eb9c6" Turn several nats into StgWord to avoid potential integer overflow (#7762) }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7762#comment:9> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #3333: GHCi doesn't load weak symbols
by GHC 25 Oct '13

25 Oct '13

#3333: GHCi doesn't load weak symbols ---------------------------------+----------------------------------------- Reporter: heatsink | Owner: Type: bug | Status: new Priority: high | Milestone: 7.8.1 Component: GHCi | Version: 6.10.4 Resolution: | Keywords: weak, dynamic loading Operating System: Linux | Architecture: x86 Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: 3658 Blocking: | Related Tickets: ---------------------------------+----------------------------------------- Changes (by simonmar): * cc: hvr (added) * priority: normal => high * milestone: 7.6.2 => 7.8.1 Comment: Looks good to me - let's commit it. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/3333#comment:34> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8402: throwTo segfaults under -prof -threaded -with-rtsopts=N2
by GHC 25 Oct '13

25 Oct '13

#8402: throwTo segfaults under -prof -threaded -with-rtsopts=N2 ----------------------------------+---------------------------------- Reporter: akio | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.7 Keywords: | Operating System: Linux Architecture: x86_64 (amd64) | Type of failure: Runtime crash Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ----------------------------------+---------------------------------- Save the following module as {{{throwto.hs}}} {{{ import Control.Concurrent import Control.Exception import Control.Monad main = do tid <- mask_ $ forkIO $ void $ (try $ threadDelay 100000 :: IO (Either SomeException ())) killThread tid }}} Then compile it with HEAD and run it: {{{ ghc-stage2 throwto.hs -prof -threaded -fforce-recomp ./throwto +RTS -N2 # segfaults }}} -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8402> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #6084: Add stg_ap_pnnv and related call patterns
by GHC 25 Oct '13

25 Oct '13

#6084: Add stg_ap_pnnv and related call patterns -------------------------------------+------------------------------------ Reporter: SimonMeier | Owner: Type: feature request | Status: new Priority: normal | Milestone: 7.8.1 Component: Runtime System | Version: 7.4.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: 8313 | Related Tickets: -------------------------------------+------------------------------------ Comment (by simonmar): Patch committed, but it needs some comments... -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/6084#comment:17> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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