https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94443
--- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> ---
$ cat sparsity_pattern.ii
int a;
unsigned *b;
class A {
A();
};
A::A() {
for (unsigned i; i <= a; ++i, ++b)
;
}
$ g++ -O3 -march=znver2 sparsity_pattern.ii
sparsity_pattern.ii: In constructor 'A::A()':
sparsity_pattern.ii:6:1: error: missing definition
6 | A::A() {
| ^
for SSA_NAME: _59 in statement:
_36 = _59;
during GIMPLE pass: vect
sparsity_pattern.ii:6:1: internal compiler error: verify_ssa failed
0x12bc552 verify_ssa(bool, bool)
/home/marxin/Programming/gcc/gcc/tree-ssa.c:1208
0xfbcd55 execute_function_todo
/home/marxin/Programming/gcc/gcc/passes.c:1992
0xfbd9fe execute_todo
/home/marxin/Programming/gcc/gcc/passes.c:2039
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
