[Bug libstdc++/101527] The implementation of std::common_iterator and std::counted_iterator's operator== seems to be wrong

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101527

--- Comment #10 from Jonathan Wakely <redi at gcc dot gnu.org> ---
I suppose I should add the testcases to the library though