[Bug c++/19808] miss a warning about uninitialized member usage in member initializer list in constructor

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=19808

--- Comment #56 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The trunk branch has been updated by Marek Polacek <mpola...@gcc.gnu.org>:

https://gcc.gnu.org/g:4b1d3d8d732bea86c7b2aba46c2a437461020824

commit r12-5479-g4b1d3d8d732bea86c7b2aba46c2a437461020824
Author: Marek Polacek <pola...@redhat.com>
Date:   Fri Nov 19 14:22:10 2021 -0500

    c++: -Wuninitialized for mem-inits and empty classes [PR19808]

    This fixes a bogus -Wuninitialized warning: there's nothing to initialize
    in empty classes, so don't add them into our uninitialized set.

            PR c++/19808

    gcc/cp/ChangeLog:

            * init.c (emit_mem_initializers): Don't add is_really_empty_class
            members into uninitialized.

    gcc/testsuite/ChangeLog:

            * g++.dg/warn/Wuninitialized-28.C: Make a class nonempty.
            * g++.dg/warn/Wuninitialized-29.C: Likewise.
            * g++.dg/warn/Wuninitialized-31.C: New test.