https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117723
Bug ID: 117723
Summary: Miscompile with -O1 and -O0/2/3
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: yunboni at smail dot nju.edu.cn
Target Milestone: ---
When I compiled this code with -O1, its output was 0. With -O0/2/3, it was 1:
```c
int printf(char *, ...);
int a, b = 3;
int c(int d, int e) {
if (d & 1) {
if (e || (d & 2))
return 1;
else
return 0;
}
return 0;
}
int main() {
a = c(b - 98, b);
printf("%d\n", a);
}
```
Compiler Explorer: https://godbolt.org/z/44T1cxGoz
It seems to be a recent regression.
