#5550: GHC infinite loop when compiling vector ---------------------------------+------------------------------------------ Reporter: simonpj | Owner: Type: bug | Status: merge Priority: low | Milestone: 7.6.2 Component: Compiler | Version: 7.2.1 Keywords: | Os: Unknown/Multiple Architecture: Unknown/Multiple | Failure: None/Unknown Difficulty: Unknown | Testcase: simplCore/should_compile/T5550 Blockedby: | Blocking: Related: | ---------------------------------+------------------------------------------ Comment(by carter): I hit this bug recently, see https://github.com/mokus0/random-fu/issues/13#issuecomment-20546431 step to repro: ghc 7.6.3, and using cabal / cabal-install head modify cabal settings to have "optimization: 2" in the ~/.cabal/config file (so libraries are built with -O2) then when i try to install random-fu, ghc gets stuck on specconstr as this ticket discusses -- Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/5550#comment:31 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler