April 2014 - ghc-tickets

Re: [GHC] #7028: incorrect link paths for in mac os x after install
by GHC 28 Apr '14

28 Apr '14

#7028: incorrect link paths for in mac os x after install ------------------------------------------+-------------------------------- Reporter: andykitchen | Owner: leroux Type: bug | Status: infoneeded Priority: normal | Milestone: 7.8.3 Component: Build System | Version: 7.4.2 Resolution: | Keywords: Operating System: MacOS X | Architecture: x86_64 Type of failure: Installing GHC failed | (amd64) Test Case: | Difficulty: Unknown Blocking: | Blocked By: | Related Tickets: ------------------------------------------+-------------------------------- Changes (by thoughtpolice): * priority: high => normal -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7028#comment:10> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7011: 32bit GHC 7.4.2 cannot compile integer-gmp on OS X 10.8
by GHC 28 Apr '14

28 Apr '14

#7011: 32bit GHC 7.4.2 cannot compile integer-gmp on OS X 10.8 --------------------------------------+--------------------------------- Reporter: chak | Owner: Type: bug | Status: infoneeded Priority: normal | Milestone: Component: libraries (other) | Version: 7.5 Resolution: | Keywords: Mountain Lion Operating System: MacOS X | Architecture: x86 Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: --------------------------------------+--------------------------------- Changes (by thoughtpolice): * priority: high => normal * milestone: 7.8.3 => -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7011#comment:9> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #8366: haskeline Posix backend needs #include <sys/termios.h> on Solaris
by GHC 28 Apr '14

28 Apr '14

#8366: haskeline Posix backend needs #include <sys/termios.h> on Solaris -------------------------------------+------------------------------------- Reporter: oddsignals | Owner: Type: bug | Status: new Priority: high | Milestone: 7.8.1 Component: libraries (other) | Version: 7.7 Keywords: | Operating System: Solaris Architecture: Unknown/Multiple | Type of failure: Building GHC Difficulty: Easy (less than 1 | failed hour) | Test Case: Blocked By: | Blocking: Related Tickets: | -------------------------------------+------------------------------------- !System/Console/Haskeline/Backend/Posix.hsc needs an #include <sys/termios.h> to compile under Solaris. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8366> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7189: RTS Assertion Crash
by GHC 28 Apr '14

28 Apr '14

#7189: RTS Assertion Crash -----------------------------------+---------------------------------- Reporter: sseverance | Owner: simonmar Type: bug | Status: infoneeded Priority: normal | Milestone: 7.10.1 Component: Runtime System | Version: 7.4.2 Resolution: | Keywords: Operating System: Linux | Architecture: x86_64 (amd64) Type of failure: Runtime crash | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: #8014 -----------------------------------+---------------------------------- Changes (by thoughtpolice): * milestone: ⊥ => 7.10.1 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7189#comment:13> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7189: RTS Assertion Crash
by GHC 28 Apr '14

28 Apr '14

#7189: RTS Assertion Crash -----------------------------------+---------------------------------- Reporter: sseverance | Owner: simonmar Type: bug | Status: infoneeded Priority: normal | Milestone: ⊥ Component: Runtime System | Version: 7.4.2 Resolution: | Keywords: Operating System: Linux | Architecture: x86_64 (amd64) Type of failure: Runtime crash | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: #8014 -----------------------------------+---------------------------------- Changes (by thoughtpolice): * cc: simonmar (added) * related: => #8014 * milestone: 7.8.3 => ⊥ -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7189#comment:12> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #8014: Assertion failure when using multithreading in debug mode.
by GHC 28 Apr '14

28 Apr '14

#8014: Assertion failure when using multithreading in debug mode. -------------------------------------+------------------------------ Reporter: Maxander | Owner: Type: bug | Status: infoneeded Priority: normal | Milestone: Component: Compiler | Version: 7.6.2 Resolution: | Keywords: rts Operating System: Unknown/Multiple | Architecture: x86 Type of failure: Runtime crash | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: #7189 -------------------------------------+------------------------------ Changes (by thoughtpolice): * related: #8014 => #7189 -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8014#comment:2> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #8014: Assertion failure when using multithreading in debug mode.
by GHC 28 Apr '14

28 Apr '14

#8014: Assertion failure when using multithreading in debug mode. -------------------------------------+------------------------------ Reporter: Maxander | Owner: Type: bug | Status: infoneeded Priority: normal | Milestone: Component: Compiler | Version: 7.6.2 Resolution: | Keywords: rts Operating System: Unknown/Multiple | Architecture: x86 Type of failure: Runtime crash | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: #8014 -------------------------------------+------------------------------ Changes (by thoughtpolice): * keywords: => rts * difficulty: => Unknown * status: new => infoneeded * related: => #8014 * failure: None/Unknown => Runtime crash -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/8014#comment:1> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #7763: Resource limits for Haskell
by GHC 28 Apr '14

28 Apr '14

#7763: Resource limits for Haskell -------------------------------------+------------------------------------ Reporter: ezyang | Owner: simonmar Type: feature request | Status: infoneeded Priority: normal | Milestone: Component: Profiling | 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 thoughtpolice): * milestone: 7.8.3 => -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/7763#comment:13> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #5019: OS X: ld: warning: could not create compact unwind for _ffi_call_unix64
by GHC 28 Apr '14

28 Apr '14

#5019: OS X: ld: warning: could not create compact unwind for _ffi_call_unix64 -------------------------------------------------+------------------------- Reporter: altaic | Owner: Type: bug | Status: Priority: high | closed Component: Compiler | Milestone: 7.8.3 Resolution: fixed | Version: 7.1 Operating System: MacOS X | Keywords: Type of failure: Incorrect warning at | Architecture: compile-time | x86_64 (amd64) Test Case: | Difficulty: Blocking: | Unknown | Blocked By: | Related Tickets: -------------------------------------------------+------------------------- Changes (by thoughtpolice): * status: infoneeded => closed * resolution: => fixed Comment: This ticket has actually been fixed for a while now, I think (I remember when it came around, the fix was in `SysTools` somewhere). I'm closing this for now since it seems fixed. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/5019#comment:23> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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[GHC] #9033: Type error suppresses defaulting, causes spurious errors
by GHC 28 Apr '14

28 Apr '14

#9033: Type error suppresses defaulting, causes spurious errors -----------------------------------------+--------------------------------- Reporter: jun0 | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.8.2 Keywords: defaulting, ambiguous | Operating System: Architecture: Unknown/Multiple | Unknown/Multiple Difficulty: Unknown | Type of failure: None/Unknown Blocked By: | Test Case: Related Tickets: | Blocking: -----------------------------------------+--------------------------------- I have a strong feeling this must have been reported already but I can't find a ticket for it, so here goes. If a source file contains a type error, like {{{#!haskell bad :: Bool bad = () }}} then GHC seems to turn off defaulting for ambiguous types in the remainder of the file. So if the same file contains for instance {{{#!haskell square :: Integral i => i -> i square x = x^2 }}} then GHC reports another type error at the ^2: {{{ test.hs:4:7: Couldn't match expected type ‘Bool’ with actual type ‘()’ In the expression: () In an equation for ‘bad’: bad = () test.hs:7:13: Could not deduce (Integral b0) arising from a use of ‘^’ from the context (Integral i) bound by the type signature for square :: Integral i => i -> i at test.hs:6:11-30 The type variable ‘b0’ is ambiguous Note: there are several potential instances: instance Integral Int -- Defined in ‘GHC.Real’ instance Integral Integer -- Defined in ‘GHC.Real’ instance Integral GHC.Types.Word -- Defined in ‘GHC.Real’ In the expression: x ^ 2 In an equation for ‘square’: square x = x ^ 2 test.hs:7:14: Could not deduce (Num b0) arising from the literal ‘2’ from the context (Integral i) bound by the type signature for square :: Integral i => i -> i at test.hs:6:11-30 The type variable ‘b0’ is ambiguous Note: there are several potential instances: instance Num Double -- Defined in ‘GHC.Float’ instance Num Float -- Defined in ‘GHC.Float’ instance Integral a => Num (GHC.Real.Ratio a) -- Defined in ‘GHC.Real’ ...plus three others In the second argument of ‘(^)’, namely ‘2’ In the expression: x ^ 2 In an equation for ‘square’: square x = x ^ 2 }}} The first error is a legitimate type mismatch and it's all fine, but the other two should be resolved with default instance selection -- and it is, once the type error in `bad` is fixed. For example, rewriting `bad` to {{{#!haskell bad :: () bad = () }}} makes *all* errors go away, including the ones on `square`. Default instance selection seems to be turned back on when square is made monomorphic, like {{{#!haskell squareMono :: Int -> Int squareMono x = x^2 }}} Note that the type of x is being fixed, not the 2 that GHC complains about in square. The effect of this is that in a file with a large number of `^2`, `^3`, and such, the error message pointing to the real type error is drowned in all the "could not deduce" messages. -- Ticket URL: <http://ghc.haskell.org/trac/ghc/ticket/9033> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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