[Bug c++/100443] member using declaration of function templates with different return types does not bring base class overload into derived class

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100443

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
That wording was only added to the draft in November, I don't think any
compilers implement all the P1787R6 changes yet.

There is still no mention of signatures, which is why I wondered why you're
talking about them. The definition of correspondence is in [basic.scope.scope],
and also doesn't mention signatures (but does distinguish between functions and
function templates).