https://gcc.gnu.org/bugzilla/show_bug.cgi?id=118915
Bug ID: 118915
Summary: Miscompile at -O2
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: ---
This code prints 2 at -O2 and -22 at -O0/1/3/s:
```c
int printf(const char *, ...);
int a;
int b(int c, int d, int e, int f) {
if (!d || !e)
return -22;
if (c > 16)
return -22;
if (!f)
return -22;
return 2;
}
int main() {
int g = b(a + 21, a + 6, a + 34, a + 26);
printf("%d\n", g);
}
```
Compiler Explorer: https://godbolt.org/z/MYGc4MeEr
It seems to fail from gcc 5.1.
