#14619: Output value of program changes upon compiling with -O optimizations -------------------------------------+------------------------------------- Reporter: sheaf | Owner: (none) Type: bug | Status: new Priority: highest | Milestone: 8.4.1 Component: Compiler | Version: 8.2.2 Resolution: | Keywords: Operating System: Windows | Architecture: x86_64 Type of failure: Incorrect result | (amd64) at runtime | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by Phyx-): However, using the newer toolchain with the same Haskell libraries as before (e.g. base, GHC-prim) etc generates the same wrong result. So It's unlikely to be a `mingw-w64` bug. Back to GHC it is.. but likely now should look at the code in base. I also swapped out GHC-prim from 8.2.2 with the one from head and that didn't work. So the difference must be in base? I'm grasping at straws here :) -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14619#comment:20 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler