#13078: Panic from ghc-stage1 when building HEAD with profiling -------------------------------------+------------------------------------- Reporter: dobenour | Owner: Type: bug | Status: new Priority: normal | Milestone: 8.2.1 Component: Compiler | Version: 8.1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- When building 3a18baff06abc193569b1b76358da26375b3c8d6 with profiling, GHC emits this error: {{{ ghc-stage1: panic! (the 'impossible' happened) (GHC version 8.1.20170106 for x86_64-unknown-linux): kindPrimRep.go k0 Call stack: CallStack (from HasCallStack): prettyCurrentCallStack, called at compiler/utils/Outputable.hs:1133:58 in ghc:Outputable callStackDoc, called at compiler/utils/Outputable.hs:1137:37 in ghc:Outputable pprPanic, called at compiler/simplStg/RepType.hs:369:9 in ghc:RepType Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} I have attached my `build.mk` file. It may be wrong, but I don't think it includes anything that should break GHC. Even if it did, I should get some sort of error message, not a panic. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13078 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler