[Bug c++/109751] [13/14 Regression] boost iterator_interface fails concept check starting in gcc-13

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109751

--- Comment #25 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-13 branch has been updated by Jason Merrill
<ja...@gcc.gnu.org>:

https://gcc.gnu.org/g:6396e37d451b2ef6d3cb9c11edbc06deeaccd808

commit r13-7771-g6396e37d451b2ef6d3cb9c11edbc06deeaccd808
Author: Jason Merrill <ja...@redhat.com>
Date:   Thu Aug 17 11:36:23 2023 -0400

    Revert "c++: only declare satisfied friends" [PR109751]

    The earlier patch was only an incremental step toward making this sort of
    code work, and broke code that had been working.  So let's revert it.

    This reverts commit r13-4035-gc41bbfcaf9d6ef.

            PR c++/109751

    gcc/cp/ChangeLog:

            * pt.cc (tsubst_friend_function): Don't check constraints.

    gcc/testsuite/ChangeLog:

            * g++.dg/cpp2a/concepts-friend11.C: Xfail.
            * g++.dg/cpp2a/concepts-friend15.C: New test.