#16113: T14740 fails in debugged compiler -------------------------------------+------------------------------------- Reporter: bgamari | Owner: (none) Type: bug | Status: new Priority: high | Milestone: 8.8.1 Component: Compiler | Version: 8.6.3 (Type checker) | 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: -------------------------------------+------------------------------------- {{{#!patch --- parser/should_fail/T14740.run/T14740.stderr.normalised 2018-12-30 16:06:27.120170052 +0000 +++ parser/should_fail/T14740.run/T14740.comp.stderr.normalised 2018-12-30 16:06:27.120170052 +0000 @@ -1,4 +1,5 @@ +ghc: panic! (the 'impossible' happened) + (GHC version 8.7.20181230 for x86_64-unknown-linux): + ASSERT failed! file compiler/types/TyCoRep.hs, line 911 -T14740.hs:5:7: - Expecting a lifted type, but ‘(# #)’ is unlifted - In the type signature: x :: ((# #)) => () +Please report this as a GHC bug: https://www.haskell.org/ghc/reportabug }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/16113 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler