#8834: 64-bit windows cabal.exe segfaults in GC ----------------------------------+---------------------------------- Reporter: awson | Owner: Type: bug | Status: patch Priority: highest | Milestone: 7.8.1 Component: Compiler | Version: 7.8.1-rc2 Resolution: | Keywords: Operating System: Windows | Architecture: x86_64 (amd64) Type of failure: Runtime crash | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: ----------------------------------+---------------------------------- Comment (by simonmar): I think the bad code is much more likely to be in a library somewhere, not in the code that calls `readFile`/`lines`, so we're not going to see anything bad in that file. @jstolarek - R1 is not caller-saves (on either Linux or Win64), so it is safe to leave it live across a foreign call. Also, that code fragment is the standard `newCAF` call which appears everywhere, if this was broken then everything would be broken. I'm surprised that the change to `isTrivial` all by itself causes this failure. That must mean that there was something wrong with the code before the "bad patch", because the change to `isTrivial` should be safe. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8834#comment:17 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler