[Bug c++/92869] [10 Regression] C++17 wrongly reports aggregate type as not-aggregate (when explicitly defaulted ctors are added)

[igor.chorazewicz at intel dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92869

--- Comment #5 from Igor Chorazewicz <igor.chorazewicz at intel dot com> ---
Ok, but P1816R0 talks about argument deduction - in my example I specify all
template arguments for A, so should this fail?

Moreover, for g++ 10 and g++ 9.2 even the following, non-template code fails
for -std=c++2a

struct A {
    A() = default;
    A(const A &) = default;
    A(A &&) = default;

    int arr[3];   
};

int main()
{
    A a = {{1,2,3}};
}