[Bug c++/94923] False positive -Wclass-memaccess with trivially copyable std::optional

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94923

--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Martin Sebor <mse...@gcc.gnu.org>:

https://gcc.gnu.org/g:c0d8623ce5aa6d92c2e6c62e1bee66272a011f59

commit r11-499-gc0d8623ce5aa6d92c2e6c62e1bee66272a011f59
Author: Martin Sebor <mse...@redhat.com>
Date:   Tue May 19 12:46:37 2020 -0600

    PR c++/94923 - False positive -Wclass-memaccess with trivially copyable
std::optional

    gcc/cp/ChangeLog:

            PR c++/94923
            * call.c ((maybe_warn_class_memaccess): Use is_byte_access_type.
            * cp-tree.h (is_dummy_object): Return bool.
            (is_byte_access_type): Declare new function.
            * tree.c (is_dummy_object): Return bool.
            (is_byte_access_type): Define new function.

    gcc/testsuite/ChangeLog:

            PR c++/94923
            * g++.dg/Wclass-memaccess.C: Add tests for std::byte.