http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52763
--- Comment #3 from Mikka <gccrepo...@gmx-topmail.de> 2012-04-04 14:22:45 UTC --- (In reply to comment #2) > But what about cases such as (val1 == (ONE|TWO)) ? > > (ONE|TWO) is of type 'int' but that code is correct and shouldn't warn In my opinion, there should be a warning here, because (ONE|TWO) is not in the enumeration range (there is no definition for 3). If it was defined (e.g. typedef enum {NONE = 0, ONE = 1, TWO = 2, THREE = 3} tEnumType), result could again be of the enumeration type and there would be no warning.