[GHC] #8908: ghc: panic! (the 'impossible' happened)
#8908: ghc: panic! (the 'impossible' happened) ------------------------------------+--------------------------------- Reporter: sledged | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.6.3 Keywords: | Operating System: Linux Architecture: Unknown/Multiple | Type of failure: None/Unknown Difficulty: Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | ------------------------------------+--------------------------------- ghc: panic! (the 'impossible' happened) (GHC version 7.4.1 for x86_64-unknown-linux): compiler/rename/RnSource.lhs:429:14-81: Irrefutable pattern failed for pattern Data.Maybe.Just (inst_tyvars, _, SrcLoc.L _ cls, _) -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8908 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
#8908: ghc: panic! (the 'impossible' happened) ---------------------------------+------------------------------------ Reporter: sledged | Owner: Type: bug | Status: closed Priority: normal | Milestone: Component: Compiler | Version: 7.6.3 Resolution: fixed | Keywords: Operating System: Linux | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: ---------------------------------+------------------------------------ Changes (by rwbarton): * status: new => closed * resolution: => fixed Comment: Thanks for the report. This is fixed already in GHC 7.6.3, though: {{{ rwbarton@morphism:/tmp$ ghc-7.6.3 STLCPar.lhs [1 of 1] Compiling Main ( STLCPar.lhs, STLCPar.o ) STLCPar.lhs:319:10: Malformed instance: (NFData => v, NFData => f) -> Multiterm v f }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8908#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler
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