[Bug c++/56633] Overload selection error for non-static data member initialization with initializer list in template class

[paolo.carlini at oracle dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=56633

--- Comment #2 from Paolo Carlini <paolo.carlini at oracle dot com> ---
This is fixed in mainline, I'm adding the testcase and closing the bug.