* c-parser.c (c_parser_declaration_or_fndef): Pass init_loc to
	maybe_warn_string_init.
	(c_parser_postfix_expression_after_paren_type): Pass type_loc to
	maybe_warn_string_init.
	* c-tree.h (maybe_warn_string_init): Update declaration.
	* c-typeck.c (maybe_warn_string_init): Add location parameter.
	Call pedwarn_init with loc instead of with input_location.
	(digest_init): Pass init_loc to maybe_warn_string_init.
	(pop_init_level): Call pedwarn_init with loc instead of with
	input_location.
	(set_init_index): Likewise.
	(process_init_element): Likewise.

	* gcc.dg/pedwarn-init.c: New test.
	* gcc.dg/init-string-1.c: Adjust dg-error.

From-SVN: r210300