
#11172: Turning on optimisations produces SEGFAULT or Impossible case alternative -------------------------------------+------------------------------------- Reporter: nh2 | Owner: bgamari Type: bug | Status: new Priority: highest | Milestone: 8.0.1 Component: Compiler | Version: 7.10.2 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: Runtime crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): Ben says that with with GHC 7.10 you should just be able to do {{{ $ git clone git://github.com/bgamari/impossible-case-alternative-repro repro $ cd repro $ git checkout master $ cabal install --with- ghc=/home/simonpj/5builds/ghc-7.10-branch/inplace/bin/ghc-stage2 }}} and get the "impossible case alternative" error message. Simpler because 7.10 can work with older packages. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/11172#comment:21 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler