January 2013 - ghc-tickets

Re: [GHC] #1316: add warning for local type signatures that use the same type variable names as outer type signatures
by GHC 21 Jan '13

21 Jan '13

#1316: add warning for local type signatures that use the same type variable names as outer type signatures ---------------------------------+------------------------------------------ Reporter: Isaac Dupree | Owner: simonpj Type: feature request | Status: new Priority: normal | Milestone: _|_ Component: Compiler | Version: 6.6.1 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Comment(by morabbin): To summarize, the proposal is that code like the o.p.'s should produce a warning when `-XScopedTypeVariables` is not in effect. -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1316#comment:9> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1245: Turn tuples into syntactic sugar for heterogeneous lists
by GHC 21 Jan '13

21 Jan '13

#1245: Turn tuples into syntactic sugar for heterogeneous lists --------------------------------------------+------------------------------- Reporter: benja.fallenstein@… | Owner: Type: feature request | Status: new Priority: normal | Milestone: _|_ Component: Compiler | Version: 6.6 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | --------------------------------------------+------------------------------- Comment(by morabbin): Wouldn't agocorona's proposal clash with layout braces? -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1245#comment:10> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1262: mdo in Template Haskell
by GHC 21 Jan '13

21 Jan '13

#1262: mdo in Template Haskell ----------------------------------------+----------------------------------- Reporter: philip.weaver@… | Owner: Type: feature request | Status: new Priority: normal | Milestone: _|_ Component: Template Haskell | Version: 6.6 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | ----------------------------------------+----------------------------------- Changes (by morabbin): * failure: => None/Unknown Comment: Since #2798 was accepted, this out to be closed (if TH supports DoRec) or renamed, if folks still want it. -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1262#comment:7> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1290: ghc runs preprocessor too much
by GHC 21 Jan '13

21 Jan '13

#1290: ghc runs preprocessor too much ---------------------------------+------------------------------------------ Reporter: guest | Owner: Type: bug | Status: new Priority: normal | Milestone: _|_ Component: Driver | Version: 6.7 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Changes (by morabbin): * failure: => None/Unknown Comment: Still difficult ... -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1290#comment:6> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1231: deprecation warnings are reported too often
by GHC 21 Jan '13

21 Jan '13

#1231: deprecation warnings are reported too often ----------------------------------------------+----------------------------- Reporter: malcolm.wallace@… | Owner: simonpj Type: feature request | Status: new Priority: low | Milestone: _|_ Component: Compiler | Version: 6.6 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: nhc98/src/compiler98 Blockedby: | Blocking: Related: | ----------------------------------------------+----------------------------- Changes (by morabbin): * failure: => None/Unknown Comment: [http://www.haskell.org/ghc/docs/latest/html/users_guide/pragmas.html #deprecated-pragma Docs for 7.6.1] now read: Warnings and deprecations are not reported for (a) uses within the defining module, and (b) uses in an export list. The latter reduces spurious complaints within a library in which one module gathers together and re-exports the exports of several others. which seems to be equivalent to Malcolm's "before", not his "after". -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1231#comment:10> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1221: Types don't match expressions in type error
by GHC 21 Jan '13

21 Jan '13

#1221: Types don't match expressions in type error ----------------------------------------+----------------------------------- Reporter: igloo | Owner: Type: bug | Status: new Priority: low | Milestone: _|_ Component: Compiler (Type checker) | Version: 6.6 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: tcfail178 Blockedby: | Blocking: Related: | ----------------------------------------+----------------------------------- Changes (by morabbin): * failure: => None/Unknown Comment: For/In issue not resolved in 7.6.1. -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1221#comment:8> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1230: write a safety wrapper around readline
by GHC 21 Jan '13

21 Jan '13

#1230: write a safety wrapper around readline ----------------------------------+----------------------------------------- Reporter: igloo | Owner: Type: feature request | Status: new Priority: low | Milestone: _|_ Component: libraries (other) | Version: 6.6 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | ----------------------------------+----------------------------------------- Changes (by morabbin): * failure: => None/Unknown Comment: Now that we have Haskeline, this should be closed invalid, or renamed if still relevant. -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1230#comment:3> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1201: ghci runs Template Haskell splices 4 times
by GHC 21 Jan '13

21 Jan '13

#1201: ghci runs Template Haskell splices 4 times ---------------------------------+------------------------------------------ Reporter: igloo | Owner: simonpj Type: bug | Status: new Priority: low | Milestone: _|_ Component: Template Haskell | Version: 6.6 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: ghci018 Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Comment(by morabbin): Confirmed still happens in GHCi 7.6.1, but with a minor change to the splice: {{{ $(do runIO $ (System.Random.randomIO :: IO Int) >>= print; [| 1 |] ) }}} i.e., use `System.Random` not `Random`. Given SPJ's comment above, close as wontifx? -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1201#comment:7> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1298: Data.Complex.phase does unnecessary pattern match
by GHC 21 Jan '13

21 Jan '13

#1298: Data.Complex.phase does unnecessary pattern match ---------------------------------+------------------------------------------ Reporter: guest | Owner: Type: bug | Status: new Priority: normal | Milestone: _|_ Component: Prelude | Version: 6.7 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Changes (by morabbin): * failure: => None/Unknown Comment: Since it's not GHC-specific (see Ian's comment above), close as invalid? -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1298#comment:4> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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Re: [GHC] #1147: Quadratic behaviour in the compacting GC
by GHC 21 Jan '13

21 Jan '13

#1147: Quadratic behaviour in the compacting GC ---------------------------------+------------------------------------------ Reporter: simonmar | Owner: Type: bug | Status: new Priority: normal | Milestone: _|_ Component: Runtime System | Version: 6.6 Keywords: ghci compacting | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: Runtime performance bug Difficulty: Unknown | Testcase: Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Comment(by morabbin): Testing with 100x, no hang. Slower than the default, but no hang. Bug fixed accidentally? -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1147#comment:8> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler

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