Warn if user requests __FORTIFY_SOURCE but it is disabled

X-Git-Tag: glibc-2.16-tps~448
X-Git-Url: http://sourceware.org/git/?p=glibc.git;a=commitdiff_plain;h=05c2c9618f583ea4acd69b3fe5ae2a2922dd2ddc

Warn if user requests __FORTIFY_SOURCE but it is disabled

[BZ #13979]
        * include/features.h: Warn if user requests __FORTIFY_SOURCE
        checking but the checks are disabled for any reason.

Gbp-Pq: Topic any
Gbp-Pq: Name local-revert-bz13979.diff

diff --git a/include/features.h b/include/features.h
index 137a90b4055ae45a137fc0e4d1514b17f3cef257..9194ddf1d605d2a49ed939c42b256f4667f8258c 100644 (file)
--- a/include/features.h
+++ b/include/features.h
@@ -376,18 +376,14 @@
 # define __USE_GNU     1
 #endif
 
-#if defined _FORTIFY_SOURCE && _FORTIFY_SOURCE > 0
-# if !defined __OPTIMIZE__ || __OPTIMIZE__ <= 0
-#  warning _FORTIFY_SOURCE requires compiling with optimization (-O)
-# elif !__GNUC_PREREQ (4, 1)
-#  warning _FORTIFY_SOURCE requires GCC 4.1 or later
-# elif _FORTIFY_SOURCE > 1
+#if defined _FORTIFY_SOURCE && _FORTIFY_SOURCE > 0 \
+    && __GNUC_PREREQ (4, 1) && defined __OPTIMIZE__ && __OPTIMIZE__ > 0
+# if _FORTIFY_SOURCE > 1
 #  define __USE_FORTIFY_LEVEL 2
 # else
 #  define __USE_FORTIFY_LEVEL 1
 # endif
-#endif
-#ifndef __USE_FORTIFY_LEVEL
+#else
 # define __USE_FORTIFY_LEVEL 0
 #endif