From: Sami Kerola <kerolasa@iki.fi>
Date: Wed, 25 Jul 2012 19:15:34 +0000 (+0200)
Subject: include: define format to be constant in xasprintf()
X-Git-Tag: v2.22-rc1~45
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d0aa8a446deaabfcc162a7af97ab24e6bd8440bc;p=thirdparty%2Futil-linux.git

include: define format to be constant in xasprintf()

Add also format function attribute to add robustness.

Signed-off-by: Sami Kerola <kerolasa@iki.fi>
---

diff --git a/include/xalloc.h b/include/xalloc.h
index 8c22ff76a9..1704259bca 100644
--- a/include/xalloc.h
+++ b/include/xalloc.h
@@ -63,7 +63,8 @@ static inline char *xstrdup(const char *str)
         return ret;
 }
 
-static inline int xasprintf(char **strp, char *fmt, ...)
+static inline int __attribute__ ((__format__(printf, 2, 3)))
+    xasprintf(char **strp, const char *fmt, ...)
 {
 	int ret;
 	va_list args;