[Bug target/124566] va_list type should not have internal linkage

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124566

--- Comment #1 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Jakub Jelinek <jakub@gcc.gnu.org>:

https://gcc.gnu.org/g:fab0829c41c86433651c87522bd572848e56ecdd

commit r16-8184-gfab0829c41c86433651c87522bd572848e56ecdd
Author: Jakub Jelinek <jakub@redhat.com>
Date:   Fri Mar 20 09:10:25 2026 +0100

    sh: Set TREE_PUBLIC on TYPE_NAME of __va_list_tag [PR124566]

    Same problem as in PR124565 on alpha,
     module;
     #include <cstdarg>
     export module pr124565;
     export namespace std {
       using std::va_list;
     }
    fails on sh4-linux with -fmodules:
    pr124565.cc:5:14: error: exporting âtypedef __gnuc_va_list va_listâ
that does not have external linkage
    <built-in>: note: âtypedef struct __va_list_tag __va_list_tagâ declared
here with internal linkage

    Same fix, tested again with a cross on that testcase.
    E.g. the just posted g++.dg/plugin/std-module-exports* tests would
    FAIL because of this on sh4-linux.

    2026-03-20  Jakub Jelinek  <jakub@redhat.com>

            PR target/124566
            * config/sh/sh.cc (sh_build_builtin_va_list): Set TREE_PUBLIC
            on type_decl.