re PR c++/84609 (internal compiler error: in cp_parser_abort_tentative_parse, at...

re PR c++/84609 (internal compiler error: in cp_parser_abort_tentative_parse, at cp/parser.c:28960 (cp_parser_member_declaration()))

	PR c++/84609
	* parser.c (cp_parser_attributes_opt): Formatting fix.
	(cp_parser_skip_balanced_tokens, cp_parser_skip_gnu_attributes_opt,
	cp_parser_skip_std_attribute_spec_seq, cp_parser_skip_attributes_opt):
	New functions.
	(cp_parser_member_declaration): Use cp_parser_skip_attributes_opt
	instead of tentative parse to peek over optional attribute tokens
	to check for CPP_COLON after them.

	* g++.dg/cpp0x/pr84609.C: New test.

From-SVN: r258080