re PR c++/77637 (ICE on x86_64-linux-gnu (Segmentation fault, tree_check, cp_parser_std_attribute_list...))

	PR c++/77637
	* parser.c (cp_parser_std_attribute_list): Reject ... without
	preceding attribute.

	* g++.dg/cpp0x/gen-attrs-62.C: New test.

From-SVN: r240265