https://gcc.gnu.org/bugzilla/show_bug.cgi?id=111357
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2023-09-10
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Reduced slightly:
```
#include <utility>
using std::integer_sequence;
using std::make_integer_sequence;
template<int... V>
void g(integer_sequence<int,V...>)
{}
template<typename ...T>
struct c1
{
static constexpr int value = 1;
constexpr operator int() { return value; }
};
template<typename T>
struct R
{
using S = make_integer_sequence<int,c1<T>{}>;
R() noexcept(noexcept(g(S())))
{}
};
int main()
{
R<int>();
}
```
The obvious workaround in this case (and the tuple_size case) is to use
`::value` (or tuple_size_v ).