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Fix sysdeps/unix/sysv/linux/arm/libc-do-syscall.S warning
- From: Joseph Myers <joseph at codesourcery dot com>
- To: <libc-alpha at sourceware dot org>
- Date: Wed, 26 Nov 2014 15:14:16 +0000
- Subject: Fix sysdeps/unix/sysv/linux/arm/libc-do-syscall.S warning
- Authentication-results: sourceware.org; auth=none
This patch fixes a warning
../include/features.h:328:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp]
seen when building for ARM. This warning comes from libc-do-syscall.S
being built for nscd: the nscd build uses _FORTIFY_SOURCE, while .S
files aren't built with -O, and the combination produces a warning.
As _FORTIFY_SOURCE doesn't do anything for .S files, undefining it in
libc-do-syscall.S seems the simplest solution.
Tested for ARM and committed.
2014-11-26 Joseph Myers <joseph@codesourcery.com>
* sysdeps/unix/sysv/linux/arm/libc-do-syscall.S (_FORTIFY_SOURCE):
Undefine.
diff --git a/sysdeps/unix/sysv/linux/arm/libc-do-syscall.S b/sysdeps/unix/sysv/linux/arm/libc-do-syscall.S
index d42a94a..78e997c 100644
--- a/sysdeps/unix/sysv/linux/arm/libc-do-syscall.S
+++ b/sysdeps/unix/sysv/linux/arm/libc-do-syscall.S
@@ -15,6 +15,9 @@
License along with the GNU C Library. If not, see
<http://www.gnu.org/licenses/>. */
+/* When this file is built for inclusion in nscd, _FORTIFY_SOURCE is
+ defined but -O is not used, resulting in a warning from features.h. */
+#undef _FORTIFY_SOURCE
#include <sysdep.h>
/* Out-of-line syscall stub. We expect the system call number in ip
--
Joseph S. Myers
joseph@codesourcery.com