gcc/gcc ChangeLog c-common.c c-common.h c-decl ...

[thorpej@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	thorpej@gcc.gnu.org	2002-05-18 12:02:03

Modified files:
	gcc            : ChangeLog c-common.c c-common.h c-decl.c 
	                 c-format.c 
	gcc/doc        : invoke.texi 
Added files:
	gcc/testsuite/gcc.dg/format: zero-length-1.c 

Log message:
	* c-common.c (c_common_post_options): Warn if -Wformat-zero-length
	is used without -Wformat.
	* c-common.h (warn_format_zero_length): Declare extern.
	* c-decl.c (warn_options): Add "format-zero-length".
	* c-format.c (warn_format_zero_length): Declare.
	(set_Wformat): Set warn_format_zero_length for -Wformat.
	(check_format_info): Only warn about zero-length formats if
	warn_format_zero_length is true.  Include the format type
	name in the warning message.
	* doc/invoke.texi: Document -Wformat-zero-length.
	* testsuite/gcc.dg/format/zero-length-1.c: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=1.14140&r2=1.14141
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/c-common.c.diff?cvsroot=gcc&r1=1.325&r2=1.326
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/c-common.h.diff?cvsroot=gcc&r1=1.135&r2=1.136
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/c-decl.c.diff?cvsroot=gcc&r1=1.325&r2=1.326
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/c-format.c.diff?cvsroot=gcc&r1=1.20&r2=1.21
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/doc/invoke.texi.diff?cvsroot=gcc&r1=1.145&r2=1.146
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/format/zero-length-1.c.diff?cvsroot=gcc&r1=NONE&r2=1.1