[Bug c++/60642] Unclear diagnostic with invalid use of abi_tag attribute on explicit instantiation

["jason at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60642

--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
Author: jason
Date: Tue Apr  1 17:49:38 2014
New Revision: 208992

URL: http://gcc.gnu.org/viewcvs?rev=208992&root=gcc&view=rev
Log:
    PR c++/60642
    * decl2.c (is_late_template_attribute): Don't defer abi_tag.
    * mangle.c (write_unqualified_name): Fix abi_tag on templates.
    * pt.c (get_template_info): Handle NAMESPACE_DECL.
    (most_general_template): Handle more kinds of template.
    * tree.c (handle_abi_tag_attribute): Ignore abi_tag on template
    instantiations and specializations.

Added:
    trunk/gcc/testsuite/g++.dg/abi/abi-tag6.C
    trunk/gcc/testsuite/g++.dg/abi/abi-tag7.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/decl2.c
    trunk/gcc/cp/mangle.c
    trunk/gcc/cp/pt.c
    trunk/gcc/cp/tree.c
    trunk/gcc/doc/extend.texi
    trunk/gcc/testsuite/g++.dg/abi/abi-tag3.C