[Bug c++/67557] [4.9/5/6 regression] Calling copy constructor of base class in constructor of derived class produces crashing code

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67557

--- Comment #14 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Mon Oct 12 07:58:43 2015
New Revision: 228704

URL: https://gcc.gnu.org/viewcvs?rev=228704&root=gcc&view=rev
Log:
        PR c++/67557

        * expr.c (store_field): Call store_constructor directly when
        storing a CONSTRUCTOR into a target smaller than its type.
        Guard against unsafe bitwise copy.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/expr.c
    trunk/gcc/testsuite/g++.dg/init/vbase1.C