https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105149
Bug ID: 105149
Summary: [9/10/11/12 Regression] ICE in verify_ssa, at
tree-ssa.cc:1211
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: ---
Affects versions down to r6, at -O1+ :
(gcc configured with --enable-checking=yes)
$ cat z1.c
#include <stdarg.h>
void foo (int size, ...)
{
struct {} d;
va_list ap;
d = va_arg (ap, typeof(d)()) ();
}
$ gcc-5 -c z1.c -O2
$ gcc-12-20220403 -c z1.c
$
$ gcc-12-20220403 -c z1.c -O2
z1.c: In function 'foo':
z1.c:7:1: error: virtual definition of statement not up to date
7 | }
| ^
D.1987 = _1;
during GIMPLE pass: ssa
z1.c:7:1: internal compiler error: verify_ssa failed
0x10a33db verify_ssa(bool, bool)
../../gcc/tree-ssa.cc:1211
0xd01ea7 execute_function_todo
../../gcc/passes.cc:2092
0xd027f2 execute_todo
../../gcc/passes.cc:2139
