https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126197
Bug ID: 126197
Summary: [16 Regression] ICE at -Os during GIMPLE pass: vrp
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/avzEzx6xh
Testcase:
#include <stdlib.h>
typedef void *(*fp_t_1)();
int32_t g19;
void *f29();
void *f7() { abort(); }
void f12()
{
int32_t bb0;
int32_t bb1;
_Bool c7, c11;
fp_t_1 fp10;
bb0 = __builtin_clz(g19);
switch ((int32_t)bb0)
case 5015:
case 309795350:
goto lbl_bf45;
fp10 = f7;
lbl_br5:
if (c7)
lbl_bf16:
if (bb1) goto lbl_br5;
fp10();
if (c7) __builtin_unreachable();
fp10 = f29;
if (c11) return;
lbl_bf45:
c11 = 1;
goto lbl_bf16;
}
This testcase crashed GCC with -Os. The dump:
<source>: In function 'f12':
<source>:6:6: internal compiler error: Segmentation fault
6 | void f12()
| ^~~
0x2067238 diagnostics::context::diagnostic_impl(rich_location*,
diagnostics::metadata const*, diagnostics::option_id, char const*,
__va_list_tag (*) [1], diagnostics::kind)
???:0
0x206052b internal_error(char const*, ...)
???:0
0x1192b34 execute_ranger_vrp(function*, bool)
???:0
