http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48782
Summary: unused-but-set static variables are not optimized out
Product: gcc
Version: 4.6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
AssignedTo: unassig...@gcc.gnu.org
ReportedBy: flamee...@gentoo.org
int main() {
static unsigned char done = 0;
done = 1;
return 1;
}
The done variable is properly reported as unused-but-set by gcc but both the
"done = 1" store and the memory area itself is kept in the produced code up to
-O3.
