http://bugzilla.suse.com/show_bug.cgi?id=1019326 http://bugzilla.suse.com/show_bug.cgi?id=1019326#c2 --- Comment #2 from Richard Biener --- I think the program is ill-formed. I read the standard as requiring a real-floating type argument and given isnan is a macro no conversions apply. -- You are receiving this mail because: You are on the CC list for the bug.