re PR c++/51229 ([C++0x] [4.7 Regression] Broken diagnostic: 'integer_cst' not supported by dump_dec)

	PR c++/51229
	* decl.c (reshape_init_class): Complain if d->cur->index is
	INTEGER_CST.
	* parser.c (cp_parser_initializer_list): If cp_parser_parse_definitely
	fails, clear designator.

	* g++.dg/ext/desig3.C: New test.

From-SVN: r182088