[PATCH/RFA] Decouple null format warning from format check

[Joseph S. Myers]

On Thu, 23 May 2002, Jason R Thorpe wrote:

> 	* builtin-attrs.def: Update copyright years.
> 	(ATTR_NONNULL): New attribute identifier.
> 	(ATTR_NONNULL_1, ATTR_NONNULL_2, ATTR_NONNULL_3): New
> 	attribute tree lists.
> 	(DEF_FORMAT_ATTRIBUTE): Chain a nonnull attribute for the
> 	format operand.
> 	(ATTR_FORMAT_ARG_1, ATTR_FORMAT_ARG_2): Use...
> 	(DEF_FORMAT_ARG_ATTRIBUTE): ...this to generate format_arg
> 	attribute lists.  Chain the appropriate nonnull attribute.
> 	* c-format.c (check_format_arg): Remove null format string
> 	warning.
> 	* testsuite/gcc.dg/format/null-1.c: New test.

OK.

-- 
Joseph S. Myers
jsm28@cam.ac.uk