#13383: ghc: panic! -------------------------------------+------------------------------------- Reporter: henenenerik | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Keywords: Panic | Operating System: Windows Architecture: | Type of failure: Incorrect API Unknown/Multiple | annotation Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- Tried to compile some code provided in the course I'm taking and caused ghc to panic. Got this in my command prompt: {{{ [1 of 1] Compiling Main ( temp.hs, temp.o ) ghc: panic! (the 'impossible' happened) (GHC version 8.0.2 for x86_64-unknown-mingw32): initTc: unsolved constraints WC {wc_insol = [W] throw_a2dw :: t_a2dv[tau:1] (CHoleCan: throw) [W] throw_a2eY :: t_a2eX[tau:1] (CHoleCan: throw) [W] throw_a2fc :: t_a2fb[tau:1] (CHoleCan: throw)} Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13383 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler