[Bug sanitizer/70147] [6 Regression] testcase from hana testsuite gets miscompiled with -fsanitize=undefined

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70147

--- Comment #21 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Wed Mar 16 07:01:36 2016
New Revision: 234248

URL: https://gcc.gnu.org/viewcvs?rev=234248&root=gcc&view=rev
Log:
        PR c++/70147
        * cp-ubsan.c (cp_ubsan_maybe_initialize_vtbl_ptrs): Temporarily
        set in_base_initializer.

        * g++.dg/ubsan/pr70147-1.C: New test.
        * g++.dg/ubsan/pr70147-2.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/ubsan/pr70147-1.C
    trunk/gcc/testsuite/g++.dg/ubsan/pr70147-2.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/cp-ubsan.c
    trunk/gcc/testsuite/ChangeLog