[Bug c++/64644] "warning: anonymous union with no members" should be an error with -pedantic-errors

[paolo at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64644

--- Comment #5 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> ---
Author: paolo
Date: Fri Sep 15 19:22:35 2017
New Revision: 252835

URL: https://gcc.gnu.org/viewcvs?rev=252835&root=gcc&view=rev
Log:
/cp
2017-09-15  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
            Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/64644
        * decl2.c (finish_anon_union): Complain about "anonymous union with
        no members" with a pedwarn.

/testsuite
2017-09-15  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>
            Paolo Carlini  <paolo.carlini@oracle.com>

        PR c++/64644
        * g++.dg/other/anon-union4.C: New.
        * g++.old-deja/g++.law/union4.C: Adjust.
        * g++.old-deja/g++.other/anon1.C: Likewise.

Added:
    trunk/gcc/testsuite/g++.dg/other/anon-union4.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/decl2.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/g++.old-deja/g++.law/union4.C
    trunk/gcc/testsuite/g++.old-deja/g++.other/anon1.C