[Bug c++/91921] Incomplete -Woverloaded-virtual warning when base class is in system header

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91921

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Author: mpolacek
Date: Sat Sep 28 11:46:33 2019
New Revision: 276249

URL: https://gcc.gnu.org/viewcvs?rev=276249&root=gcc&view=rev
Log:
        PR c++/91921 - stray warning with -Woverloaded-virtual.
        * class.c (warn_hidden): Only emit the second part of
        -Woverloaded-virtual if the first part was issued.  Use inform instead
        warning_at.

        * g++.dg/warn/Woverloaded-2.C: New.
        * g++.dg/warn/Woverloaded-2.h: New.
        * g++.dg/warn/pr61945.C: Turn dg-warning into dg-message.
        * g++.old-deja/g++.mike/warn6.C: Likewise.
        * g++.old-deja/g++.warn/virt1.C: Likewise.

Added:
    trunk/gcc/testsuite/g++.dg/warn/Woverloaded-2.C
    trunk/gcc/testsuite/g++.dg/warn/Woverloaded-2.h
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/class.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.dg/warn/pr61945.C
    trunk/gcc/testsuite/g++.old-deja/g++.mike/warn6.C
    trunk/gcc/testsuite/g++.old-deja/g++.warn/virt1.C