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Subject: [Bug c++/102345] [modules] Cannot define a module interface unit for
 anything in <new>
Date: Sat, 25 May 2024 00:32:41 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102345

--- Comment #5 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Nathaniel Shead <nshead@gcc.gnu.org>:

https://gcc.gnu.org/g:28b508233a12c13295f960a2cb8a4864879acfb4

commit r15-830-g28b508233a12c13295f960a2cb8a4864879acfb4
Author: Nathaniel Shead <nathanieloshead@gmail.com>
Date:   Sat May 25 01:03:54 2024 +1000

    c++/modules: Improve diagnostic when redeclaring builtin in module
[PR102345]

    If a user mistakenly includes a standard library header within the
    module purview, they currently get a confusing "declaration conflicts
    with builtin" error.  This patch updates the message to include "in
    module", to help guide the user towards the likely cause.

            PR c++/102345

    gcc/cp/ChangeLog:

            * module.cc (module_may_redeclare): Update error message.

    gcc/testsuite/ChangeLog:

            * g++.dg/modules/enum-12.C: Test for updated error.

    Signed-off-by: Nathaniel Shead <nathanieloshead@gmail.com>=