[Bug c++/71528] [5/6/7 Regression] multiple extern reference declarations produce uninitialized access

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71528

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Author: jakub
Date: Tue Jun 14 19:55:08 2016
New Revision: 237458

URL: https://gcc.gnu.org/viewcvs?rev=237458&root=gcc&view=rev
Log:
        PR c++/71528
        * decl.c (duplicate_decls): For DECL_INITIALIZED_P non-external
        olddecl vars, preserve their TREE_READONLY bit.

        * g++.dg/opt/pr71528.C: New test.

Added:
    trunk/gcc/testsuite/g++.dg/opt/pr71528.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/decl.c
    trunk/gcc/testsuite/ChangeLog