https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120446
--- Comment #6 from GCC Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-15 branch has been updated by Patrick Palka <[email protected]>: https://gcc.gnu.org/g:95f5abd112020f86aba51ed35a6d517fb09682fe commit r15-10609-g95f5abd112020f86aba51ed35a6d517fb09682fe Author: Patrick Palka <[email protected]> Date: Fri Dec 5 13:43:26 2025 -0500 libstdc++: Consolidate bullet 1 __common_reference_impl partial specs ... and in passing use requires-clauses instead of void_t based SFINAE. This is a non-functional change that'll simplify implementing the P2655R3 change to common_reference. PR c++/120446 libstdc++-v3/ChangeLog: * include/std/type_traits (__common_reference_impl): Rewrite partial specializations to use requires-clause instead of an additional void_t template parameter. Consolidate the partial specializations corresponding to bullet 1. Reviewed-by: Tomasz KamiÅski <[email protected]> Reviewed-by: Jonathan Wakely <[email protected]> (cherry picked from commit cbdbbdd1fccfd789e6fbcb37b1b602bb7482de4b)
