re PR c++/58584 ([c++11] ICE with invalid argument for alignas)

re PR c++/58584 ([c++11] ICE with invalid argument for alignas)

/cp
2013-10-04  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/58584
	* decl2.c (save_template_attributes): Handle error_mark_node as
	*attr_p argument.
	(cp_check_const_attributes): Likewise for attributes.
	* parser.c (cp_parser_std_attribute_spec): When alignas_expr is an
	error_mark_node call cp_parser_skip_to_end_of_statement.

/testsuite
2013-10-04  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/58584
	* g++.dg/cpp0x/gen-attrs-55.C: New.

From-SVN: r203193