https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97328
Bug ID: 97328
Summary: [ICE] internal compiler error: in verify_ctor_sanity,
at cp/constexpr.c:3995
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: ldalessandro at gmail dot com
Target Milestone: ---
Following code causes ICE, but *ONLY* when explicitly passing `-std=c++20`.
```
template <typename T, int N>
struct vector {
union storage {
T t;
constexpr storage() {}
} data[N];
};
constexpr auto foo() {
vector<char, 8> i;
return i;
}
auto f = foo();
```
See https://godbolt.org/z/hYYeq8.
