[Bug c++/63942] [5.0 Regression] constexpr conflicts with previous declaration

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63942

--- Comment #11 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Nov 21 21:35:09 2014
New Revision: 217950

URL: https://gcc.gnu.org/viewcvs?rev=217950&root=gcc&view=rev
Log:
    PR c++/63942
    * name-lookup.c (supplement_binding_1): Override a mangling alias.
    * mangle.c (implicit_alias_p, remove_implicit_alias): New.
    (mangle_decl): Avoid creating conflicting alias with
    -fabi-compat-version=0, too.
    * cp-tree.h: Adjust.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/nullptr32.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/cp-tree.h
    trunk/gcc/cp/mangle.c
    trunk/gcc/cp/name-lookup.c