[Bug c++/63658] [4.9/5 Regression] Using class reference as template parameter causes compilation to fail

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63658

--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Fri Nov 21 00:47:50 2014
New Revision: 217900

URL: https://gcc.gnu.org/viewcvs?rev=217900&root=gcc&view=rev
Log:
    PR c++/63658
    * pt.c (convert_nontype_argument): Call convert_from_reference.
    (check_instantiated_arg): Don't be confused by reference refs.
    (unify): Look through reference refs on the arg, too.
    * mangle.c (write_template_arg): Look through reference refs.

Added:
    trunk/gcc/testsuite/g++.dg/template/ref9.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/mangle.c
    trunk/gcc/cp/pt.c