[Bug c++/117257] Problem of std::complex and maybe GCC accepts invalid

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117257

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Further reduced:

void f(_Complex double);

int main()
{
    f({1.0, 0.0});
}

GCC accepts this, Clang doesn't.

This is the underlying reason why Clang won't accept std::complex<double>({1.0,
1.0}).