[Bug c++/99399] why does not a pack expansion that is a using-delcaration which intends to introduce the base classes's constructor accept by GCC

[xmh970252187 at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99399

--- Comment #1 from jim x <xmh970252187 at gmail dot com> ---
All the quotes refer to n4861.