#8037: GHC panic when compiling unsafeCoerce ---------------------------------+------------------------------------ Reporter: ghc@… | Owner: Type: bug | Status: infoneeded Priority: normal | Milestone: Component: Compiler | Version: 7.6.1 Resolution: | Keywords: Operating System: MacOS X | Architecture: Unknown/Multiple Type of failure: None/Unknown | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: ---------------------------------+------------------------------------ Comment (by bgamari): I can reproduce a perhaps related issue with GHC 7.7 and `OpenGL-2.9.0.0`, {{{ $ ghc -O Test.hs [1 of 1] Compiling Test ( Test.hs, Test.o ) ghc: panic! (the 'impossible' happened) (GHC version 7.7.20130919 for x86_64-unknown-linux): StgCmmEnv: variable not found ww_s3rs{v} [lid] local binds for: main:Test.crash{v r1pI} [gid] main:Test.invalidCast{v r1pJ} [gid] main:Test.crash1{v r3ss} [gid] main:Test.$wa{v r3st} [gid] ww{v s3tT} [lid] ww1{v s3tU} [lid] ww2{v s3tV} [lid] sat_s3tX{v} [lid] sat_s3tY{v} [lid] sat_s3tZ{v} [lid] }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8037#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler