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From: "cvs-commit at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/113038] [14 regression] Excess errors for
 g++.dg/modules/hello-1_b.C  after r14-6569-gfe54b57728c09a
Date: Fri, 12 Jan 2024 17:16:56 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D113038

--- Comment #3 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The trunk branch has been updated by Jason Merrill <jason@gcc.gnu.org>:

https://gcc.gnu.org/g:27521a2f4f7b859d5656e5bdd69d3f759ea4c23a

commit r14-7213-g27521a2f4f7b859d5656e5bdd69d3f759ea4c23a
Author: Jason Merrill <jason@redhat.com>
Date:   Mon Dec 18 15:47:10 2023 -0500

    c++: __class_type_info and modules [PR113038]

    Doing a dynamic_cast in both TUs broke because we were declaring a new
    __class_type_info in _b that conflicted with the one imported in the gl=
obal
    module from _a.  It seems clear to me that any new class declaration in
    the global module should merge with an imported definition, but for GCC=
 14
    let's just fix this for the specific case of __class_type_info.

            PR c++/113038

    gcc/cp/ChangeLog:

            * name-lookup.cc (lookup_elaborated_type): Look for bindings
            in the global namespace in the ABI namespace.

    gcc/testsuite/ChangeLog:

            * g++.dg/modules/pr106304_b.C: Add dynamic_cast.=