[Bug c++/108566] [11/12 Regression] ICE: tree check: expected tree that contains 'decl with visibility' structure, have 'field_decl' in write_unqualified_name with anonymous struct inside an anonymous union since r11-2016-g6324c52bba490baa

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108566

--- Comment #8 from CVS 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:f483dc1367294d02581e2d98c5f84be4dd67f26b

commit r12-9431-gf483dc1367294d02581e2d98c5f84be4dd67f26b
Author: Jason Merrill <ja...@redhat.com>
Date:   Thu Mar 9 23:33:43 2023 -0500

    c++: class NTTP and nested anon union [PR108566]

    We were failing to come up with the name for the anonymous union.  It seems
    like unfortunate redundancy, but the ABI does say that the name of an
    anonymous union is its first named member.

            PR c++/108566

    gcc/cp/ChangeLog:

            * mangle.cc (anon_aggr_naming_decl): New.
            (write_unqualified_name): Use it.

    gcc/testsuite/ChangeLog:

            * g++.dg/abi/anon6.C: New test.