#15755: randomRIO panic on (GHC version 8.4.3 for x86_64-apple-darwin) -------------------------------------+------------------------------------- Reporter: cmal | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.4.3 Keywords: randomRIO | Operating System: Unknown/Multiple Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- randomRIO (1,100) ghc: panic! (the 'impossible' happened) (GHC version 8.4.3 for x86_64-apple-darwin): nameModule system $dShow_a78p Call stack: CallStack (from HasCallStack): callStackDoc, called at compiler/utils/Outputable.hs:1150:37 in ghc:Outputable pprPanic, called at compiler/basicTypes/Name.hs:241:3 in ghc:Name Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15755 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler