re PR c/83595 (ICE: in linemap_macro_map_lookup, at libcpp/line-map.c:1008 on invalid...

re PR c/83595 (ICE: in linemap_macro_map_lookup, at libcpp/line-map.c:1008 on invalid code)

	PR c/83595
	* c-parser.c (c_parser_braced_init, c_parser_initelt,
	c_parser_conditional_expression, c_parser_cast_expression,
	c_parser_sizeof_expression, c_parser_alignof_expression,
	c_parser_postfix_expression, c_parser_omp_declare_reduction,
	c_parser_transaction_expression): Use set_error () method instead
	of setting value member to error_mark_node.

	* gcc.dg/pr83595.c: New test.

From-SVN: r256054