#8205: the 'impossible' happened : expectJust block_order ----------------------------------------+---------------------------------- Reporter: erikd | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 7.7 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Building GHC failed | Unknown/Multiple Test Case: | Difficulty: Unknown Blocking: | Blocked By: | Related Tickets: ----------------------------------------+---------------------------------- Comment (by jstolarek): OK, I'm really puzzled about this segfault in stage2 compiler, but perhaps I can help with panic in `expectJust` - we need to reproduce it. This means you need to revert the reverting commit :) or in other words attempt to build unmodified HEAD and allow stage1 build to fail with panic that you originally reported. After that happens run the command that causes the segfault with `-ddump-cmm -dcmm-lint` added. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8205#comment:11 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler