#13171: panic on negative literal in case on Word -------------------------------------+------------------------------------- Reporter: rwbarton | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Changes (by RyanGlScott): * version: 8.1 => 8.0.1 Comment: I compiled GHC 8.0.1 with the `devel2` flavor and it still gave the same panic: {{{ $ ghc4/inplace/bin/ghc-stage2 --interactive Bug.hs GHCi, version 8.0.1: http://www.haskell.org/ghc/ :? for help Loaded GHCi configuration from /home/rgscott/.ghci [1 of 1] Compiling Case ( Bug.hs, interpreted ) ghc-stage2: panic! (the 'impossible' happened) (GHC version 8.0.1 for x86_64-unknown-linux): ASSERT failed! CallStack (from HasCallStack): assertPprPanic, called at compiler/basicTypes/Literal.hs:224:75 in ghc:Literal -1 }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13171#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler