* c-common.c (check_missing_format_attribute): New.
	* c-common.h (check_missing_format_attribute): Likewise.
	* c-typeck.c (convert_for_assignment): Use it.

cp:
	* call.c (convert_for_arg_passing): Check function pointers when
	-Wmissing-format-attribute is activated.
	* typeck.c (convert_for_assignment): Likewise.

testsuite:
	* g++.dg/warn/miss-format-1.C, g++.dg/warn/miss-format-2.C,
	g++.dg/warn/miss-format-3.C, g++.dg/warn/miss-format-4.C,
	g++.dg/warn/miss-format-5.C, g++.dg/warn/miss-format-6.C: New.

From-SVN: r102338