#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: ----------------------------------------+---------------------------------- Changes (by jstolarek): * cc: jan.stolarek@… (added) Comment: Austin sugests that this happened around the time when I pushed my loopification patch (this bug reported on 30 Aug, my patch pushed a day earlier). Panic happens in `splitAtProcPoints` function and I recall that my previous attempt at loopification as a Cmm pass didn't work with LLVM because it broke the invariant that a block may be reachable only from a single procpoint. So, can anyone experiencing this problem try {{{ git revert d61c3ac186c94021c851f7a2a6d20631e35fc1ba }}} and see if this solves the problem? -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8205#comment:5 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler