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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/109751] [13/14 Regression] boost iterator_interface fails
 concept check starting in gcc-13
Date: Thu, 31 Aug 2023 22:40:09 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109751

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

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

commit r13-7771-g6396e37d451b2ef6d3cb9c11edbc06deeaccd808
Author: Jason Merrill <jason@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.=