#12128: ghci cause panic on 8.0.1 -------------------------------------+------------------------------------- Reporter: zxtx | Owner: Type: bug | Status: new Priority: high | Milestone: 8.0.2 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: | -------------------------------------+------------------------------------- Comment (by seraphime): Seems to be a regression introduced in 1c9fd3f1c5522372fcaf250c805b959e8090a62c : Case-of-empty-alts is trivial (Trac #11155). Removing the line: {{{ cpe_ExprIsTrivial (Case e _ _ []) = cpe_ExprIsTrivial e }}} Fixes the issue, but breaks T11155 and T12212 in HEAD. I'm trying to find a workaround. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12128#comment:3 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler