https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104282
--- Comment #8 from Fedor Chelnokov <fchelnokov at gmail dot com> ---
One more inconsistency here:
struct A {
A() {}
A(A&&) = delete;
};
struct B : A { };
int main() {
// ok in GCC
B{ A{} };
// error in GCC
B b{ A{} };
}
GCC allows temporary creation B{ A{} }, but prohibits variable creation B b{
A{} }. Online demo: https://gcc.godbolt.org/z/YGjYYqo6M
It looks like both must be prohibited as in Clang (or both allowed as in MSVC).
Related discussion: https://stackoverflow.com/q/70898525/7325599
