[Bug c++/115746] [C++26] P2963R3 - Ordering of constraints involving fold expressions

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115746

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 58759
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58759&action=edit
gcc15-pr115746-wip.patch

Untested WIP patch.