[Bug c++/107291] [12/13/14 Regression] ICE in build_comparison_op, at cp/method.cc:1461 since r12-4202-g09d886e671f2230a

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107291

--- Comment #6 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-12 branch has been updated by Jason Merrill
<ja...@gcc.gnu.org>:

https://gcc.gnu.org/g:db8d5b0ad074344559b3201e567c1e47e65d0bdd

commit r12-10138-gdb8d5b0ad074344559b3201e567c1e47e65d0bdd
Author: Jason Merrill <ja...@redhat.com>
Date:   Mon Feb 5 19:56:45 2024 -0500

    c++: defaulted op== for incomplete class [PR107291]

    After complaining about lack of friendship, we should not try to go on and
    define the defaulted comparison operator anyway.

            PR c++/107291

    gcc/cp/ChangeLog:

            * method.cc (early_check_defaulted_comparison): Fail if not friend.

    gcc/testsuite/ChangeLog:

            * g++.dg/cpp2a/spaceship-eq17.C: New test.

    (cherry picked from commit c5d34912ad576be1ef19be92f7eabde54b9089eb)