#4090: Impossible compilation with primitive operations (possibly unsafeCoerce#) ------------------------+--------------------------------------------------- Reporter: malosh | Owner: Type: bug | Status: new Priority: normal | Component: Compiler Version: 6.12.1 | Keywords: Os: MacOS X | Testcase: Architecture: x86 | Failure: Compile-time crash ------------------------+--------------------------------------------------- On the following code :
ulp#::Double#->Double# ulp# d= let w=unsafeCoerce# d :: Word64# e=(unsafeCoerce# (uncheckedShiftRL64# w 52#)) `and#` 0x7ff## in if e `gtWord#` 0x034## then unsafeCoerce# (unsafeCoerce# (e `minusWord#` (0x034##)) `uncheckedShiftL64#` 52#) else unsafeCoerce# (1## `uncheckedShiftL#` ((unsafeCoerce# e) -# 1#)) GHC 6.12.1 returns : ghc: panic! (the 'impossible' happened) (GHC version 6.12.1 for i386-apple-darwin): getRegister(x86) I64[BaseReg + 72] -- Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4090> GHC <http://www.haskell.org/ghc/> The Glasgow Haskell Compiler _______________________________________________ Glasgow-haskell-bugs mailing list Glasgow-haskell-bugs@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs