#12184: unsafeCoerce# causing invalid assembly generation -------------------------------------+------------------------------------- Reporter: osa1 | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by osa1):
you were lucky enough to get an error message
But I did not get an error message! GHC is happily generating an assembly file with `naughty x86_64 register` in it! I think it should at least panic at that point instead of printing this. But ideally, the code generator would know more about the register set and do something sensible e.g. a proper error message ("unsafeCoerce# between float and int not supported as they live in separate registers" etc.). Really, I should be getting a panic. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12184#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler