#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 rwbarton): I don't really think this is a bug. You used `unsafeCoerce#` in an invalid way, and you were lucky enough to get an error message. From the documentation of `unsafeCoerce#`:
The following uses of {\tt unsafeCoerce\#} are supposed to work (i.e. not lead to spurious compile-time or run-time crashes):
* Casting an unboxed type to another unboxed type of the same size (but not coercions between floating-point and integral types)
-- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12184#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler