Hello, We had an interesting error that was undetected in gcc: { unsigned long a; unsigned long x=3; unsigned long y=4; a = min(x,y); } I've simplified the example. In the original code, the contents of the min() statement were longer, so that it was on a separate line from the assignment operation. Because of a bug, the assignment line was removed, and we had the following code: { unsigned long a; unsigned long x=3; unsigned long y=4; min(x,y); } Should this be picked up as a warning/error? Neither -Wall or -Wextra picked it up. Many thanks, Paul -- View this message in context: http://old.nabble.com/How-to-force-gcc-to-report-a-warning-error-tp30055230p30055230.html Sent from the gcc - Help mailing list archive at Nabble.com.