[Bug c++/98481] [10 Regression] std::vector::size_type as return type gets tagged with abi:cxx11

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98481

--- Comment #7 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jason Merrill <ja...@gcc.gnu.org>:

https://gcc.gnu.org/g:5f00df5925082c7b66da91270f2ed29bf4818c93

commit r11-7951-g5f00df5925082c7b66da91270f2ed29bf4818c93
Author: Jason Merrill <ja...@redhat.com>
Date:   Wed Mar 31 17:48:50 2021 -0400

    c++: Add ABI version for PR98481 fix

    The PR98481 fix corrects an ABI regression in GCC 10, but we don't want to
    introduce an ABI change in the middle of the GCC 10 cycle.  This patch
    introduces ABI v15 for the fix, which will be available but not default in
    GCC 10.3; the broken behavior remains in ABI v14.  Compatibility aliases
    will not be generated for this change.

    gcc/ChangeLog:

            PR c++/98481
            * common.opt: Document v15 and v16.

    gcc/c-family/ChangeLog:

            PR c++/98481
            * c-opts.c (c_common_post_options): Bump latest_abi_version.

    gcc/cp/ChangeLog:

            PR c++/98481
            * mangle.c (write_expression): Adjust.
            * class.c (find_abi_tags_r): Disable PR98481 fix for ABI v14.
            (mark_abi_tags_r): Likewise.

    gcc/testsuite/ChangeLog:

            PR c++/98481
            * g++.dg/abi/abi-tag24a.C: New test.
            * g++.dg/abi/macro0.C: Adjust expected value.