https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110337
Bug ID: 110337
Summary: Wrong code at -O2/s on x86_64-linux-gnu
Product: gcc
Version: 14.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: shaohua.li at inf dot ethz.ch
Target Milestone: ---
This seems to be a recent regression on GCC -O2/s
$ cat a.c
int printf(const char *, ...);
int a, e;
static short b = 3, f;
long c;
char d;
short g() {
e = a;
for (; a != 4;)
return 39570 + d + b;
return 0;
}
int main() {
int h;
f = g();
int i = f;
h = i < 0 ? i : i >> 14;
c = b && h;
printf("%d\n", (int)c);
}
$
$ gcc-tk -O0 a.c && ./a.out
1
$ gcc-tk -O2 a.c && ./a.out
-1
$
