https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105148
Bug ID: 105148
Summary: [11/12 Regression] ICE in verify_use, at
tree-ssa.cc:881
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: gs...@t-online.de
Target Milestone: ---
Started between 20201122 and 20201129, at -O2+ :
$ cat z1.c
extern int h (void);
extern int a[7][256];
static int f (int a[7][256], int n)
{
for (int i = 0; i < n; i++) {
int v = h(), a[1][i];
a[n][i] = 0;
}
}
int g (void)
{
return f (a, 5);
}
$ gcc-12-20220403 -c z1.c -O1
$
$ gcc-12-20220403 -c z1.c -O2
during GIMPLE pass: ivopts
z1.c: In function 'g':
z1.c:10:5: internal compiler error: Segmentation fault
10 | int g (void)
| ^
0xe0a17f crash_signal
../../gcc/toplev.cc:322
0x109ebab verify_use
../../gcc/tree-ssa.cc:881
0x10a3942 verify_ssa(bool, bool)
../../gcc/tree-ssa.cc:1164
0xd01ea7 execute_function_todo
../../gcc/passes.cc:2092
0xd027f2 execute_todo
../../gcc/passes.cc:2139
