[Bug c++/92947] New: Parenthesized aggregate initialization doesn't work with the library types it's supposed to work with

[ville.voutilainen at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92947

            Bug ID: 92947
           Summary: Parenthesized aggregate initialization doesn't work
                    with the library types it's supposed to work with
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ville.voutilainen at gmail dot com
  Target Milestone: ---

struct aggressive_aggregate
{
    int a;
    int b;
};

int main()
{
    static_assert(__is_constructible(aggressive_aggregate, int, int)); // fails
    decltype(aggressive_aggregate(1,2)) foo; // ill-formed
    bool b = noexcept(aggressive_aggregate(1,2)); // ill-formed
}

All of those things should work. The __is_constructible should be true,
and the decltype and noexcept should be well-formed.