PR c/81417
	* c-array-notation.c (fix_builtin_array_notation_fn): Update calls to
	build_conditional_expr.	
	* c-parser.c (c_parser_conditional_expression): Create locations for
	EXP1 and EXP2 from their source ranges.  Pass the locations down to
	build_conditional_expr.
	* c-tree.h (build_conditional_expr): Update declaration.
	* c-typeck.c (build_conditional_expr): Add location_t parameters.
	For -Wsign-compare, also print the types.

	* input.c (make_location): New overload.
	* input.h (make_location): Declare.

	* objc-next-runtime-abi-02.c (build_v2_build_objc_method_call): Update
	a call to build_conditional_expr.

	* Wsign-compare-1.c: New test.
	* gcc.dg/compare1.c: Adjust dg-bogus.
	* gcc.dg/compare2.c: Likewise.
	* gcc.dg/compare3.c: Likewise.
	* gcc.dg/compare7.c: Likewise.
	* gcc.dg/compare8.c: Likewise.
	* gcc.dg/compare9.c: Likewise.
	* gcc.dg/pr11492.c: Likewise.

From-SVN: r250984