Literal overflow test fails

On 32 bit Windows I get this (with HEAD). libraries\Win32\Graphics\Win32\GDI\HDC.hs:145:14: Warning: Literal 2147483648 of type Int overflows The offending code is: setTextCharacterExtra dc extra = failIf (== 0x80000000) "SetTextCharacterExtra" $ c_SetTextCharacterExtra dc extra The new literal-overflow test objects to 0x80000000 :: Int. I'm not sure if it should object; in this case we are deliberately using the bit-pattern for minBound. Also what happens on a 64-bit architecture? What should the behaviour here be? - should we use minBound here? - what should the new literal-overlflow code do for 0xblah constants? This is currently breaking the HEAD build. Simon