glibc/glibc-rh2033684-1.patch

28 lines
936 B
Diff

commit 2a08b6e8331a611dc29325bfa6e29fecc9a3a46e
Author: Siddhesh Poyarekar <siddhesh@sourceware.org>
Date: Thu Dec 10 16:47:02 2020 +0530
Warn on unsupported fortification levels
Make the _FORTIFY_SOURCE macro soup in features.h warn about
unsupported fortification levels. For example, it will warn about
_FORTIFY_SOURCE=3 and over with an indication of which level has been
selected.
Co-authored-by: Paul Eggert <eggert@cs.ucla.edu>
diff --git a/include/features.h b/include/features.h
index 5bed0a499605a3a2..ea7673ee115bcf0a 100644
--- a/include/features.h
+++ b/include/features.h
@@ -382,6 +382,9 @@
# elif !__GNUC_PREREQ (4, 1)
# warning _FORTIFY_SOURCE requires GCC 4.1 or later
# elif _FORTIFY_SOURCE > 1
+# if _FORTIFY_SOURCE > 2
+# warning _FORTIFY_SOURCE > 2 is treated like 2 on this platform
+# endif
# define __USE_FORTIFY_LEVEL 2
# else
# define __USE_FORTIFY_LEVEL 1