https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125207
Bug ID: 125207
Summary: [16/17 Regression] Wrong code at -O3
Product: gcc
Version: 17.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: tree-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: xxs_chy at outlook dot com
Target Milestone: ---
Reproducer: https://godbolt.org/z/nq89h4a71
Testcase:
#include <stdint.h>
typedef void *(*fp_t_5)(int64_t, int8_t, int8_t);
int16_t g2, g30, g21, g17, g16, g14, g9;
int64_t g3;
void *g12, *g13;
_Bool g22, g26;
int32_t g31;
int8_t f11(void *, fp_t_5 a1, int16_t, void *, void *)
{
lbl_br3:
g12 = a1(8021911581202 ^ g14, 0, g9);
if (!g22) goto lbl_br3;
if (g2 == g17) goto lbl_br3;
if (g26) return g30;
goto lbl_br3;
}
void *f2(int64_t a0, int8_t, int8_t a2)
{
g26 = 6;
g22 = -3 < g16;
g13 = 0;
if (g3 == a0) goto lbl_b16;
g31 = 1371635658 - -682422900;
a0 = g31;
lbl_b16:
if (a0 != 2054058558) goto lbl_br25;
if (a2 != 80) return 0;
lbl_br25:
g17 = 6;
g21 = f11(0, f2, 0, 0, 0);
return 0;
}
void f1() { f2(0, 0, 0); }
int main() { f2(0, 0, 0); }
If you compile this testcase at -O3 and run it, it will trigger a segmentation
fault.
