blob: 51942f58c902e608eea37c87a47c3bbe5195ed53 [file] [log] [blame]
diff -durN gcc-4.4.0.orig/gcc/c-common.c gcc-4.4.0/gcc/c-common.c
--- gcc-4.4.0.orig/gcc/c-common.c 2009-03-30 19:42:27.000000000 +0200
+++ gcc-4.4.0/gcc/c-common.c 2009-05-27 21:38:08.000000000 +0200
@@ -301,7 +301,7 @@
/* Warn about format/argument anomalies in calls to formatted I/O functions
(*printf, *scanf, strftime, strfmon, etc.). */
-int warn_format;
+int warn_format = 1;
/* Warn about using __null (as NULL in C++) as sentinel. For code compiled
with GCC this doesn't matter as __null is guaranteed to have the right
diff -durN gcc-4.4.0.orig/gcc/c.opt gcc-4.4.0/gcc/c.opt
--- gcc-4.4.0.orig/gcc/c.opt 2009-03-18 22:14:53.000000000 +0100
+++ gcc-4.4.0/gcc/c.opt 2009-05-27 21:38:08.000000000 +0200
@@ -236,7 +236,7 @@
Warn about format strings that contain NUL bytes
Wformat-security
-C ObjC C++ ObjC++ Var(warn_format_security) Warning
+C ObjC C++ ObjC++ Var(warn_format_security) Init(1) Warning
Warn about possible security problems with format functions
Wformat-y2k
diff -durN gcc-4.4.0.orig/gcc/doc/invoke.texi gcc-4.4.0/gcc/doc/invoke.texi
--- gcc-4.4.0.orig/gcc/doc/invoke.texi 2009-04-01 09:18:47.000000000 +0200
+++ gcc-4.4.0/gcc/doc/invoke.texi 2009-05-27 21:38:08.000000000 +0200
@@ -2867,6 +2867,9 @@
@option{-Wformat-nonliteral}, @option{-Wformat-security}, and
@option{-Wformat=2} are available, but are not included in @option{-Wall}.
+NOTE: In Gentoo, this option is enabled by default for C, C++, ObjC, ObjC++.
+To disable, use @option{-Wformat=0}.
+
@item -Wformat-y2k
@opindex Wformat-y2k
@opindex Wno-format-y2k
@@ -2920,6 +2923,11 @@
in future warnings may be added to @option{-Wformat-security} that are not
included in @option{-Wformat-nonliteral}.)
+NOTE: In Gentoo, this option is enabled by default for C, C++, ObjC, ObjC++.
+To disable, use @option{-Wno-format-security}, or disable all format warnings
+with @option{-Wformat=0}. To make format security warnings fatal, specify
+@option{-Werror=format-security}.
+
@item -Wformat=2
@opindex Wformat=2
@opindex Wno-format=2