https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116079
Bug ID: 116079
Summary: ice during GIMPLE pass lim
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: dcb314 at hotmail dot com
Target Milestone: ---
This C source code:
char g_132;
int g_701, g_1189, func_24___trans_tmp_15, func_24_l_2691;
long func_24___trans_tmp_9;
int *func_24_l_2684;
void func_24() {
for (; g_1189;) {
g_132 = 0;
for (; g_132 < 6; ++g_132) {
func_24___trans_tmp_9 = *func_24_l_2684 = func_24_l_2691;
g_701 = 4;
for (; g_701; g_701 -= 1) {
int l_2748[4];
int si2 = l_2748[3];
func_24___trans_tmp_15 = si2;
}
}
}
}
when compiled by recent gcc trunk, does this:
cvise $ /home/dcb40b/gcc/results.20240718.asan.ubsan/bin/gcc -c -w -O2
-fno-strict-aliasing bug1044.c
cvise $ /home/dcb40b/gcc/results.20240719.asan.ubsan/bin/gcc -c -w -O2
-fno-strict-aliasing bug1044.c
during GIMPLE pass: lim
bug1044.c: In function ‘func_24’:
bug1044.c:5:6: internal compiler error: Segmentation fault
5 | void func_24() {
| ^~~~~~~
0x21cc5cd internal_error(char const*, ...)
/home/dcb40b/gcc/working/gcc/../../trunk/gcc/diagnostic-global-context.cc:491
0xef6f69 crash_signal(int)
/home/dcb40b/gcc/working/gcc/../../trunk/gcc/toplev.cc:319
0x9750f6 dominated_by_p(cdi_direction, basic_block_def const*, basic_block_def
const*)
/home/dcb40b/gcc/working/gcc/../../trunk/gcc/dominance.cc:1128
Git range seems to be g:d062b0abf45cd540 to g:2ee70c9f83a1033f
