I noticed sexpr_get takes a printf-style format, yet it is declared with no printf attribute. Here's the fix: 2007-10-17 Jim Meyering <meyering(a)redhat.com&gt; * src/xend_internal.c (sexpr_get): Declare with gcc's printf attribute. Index: src/xend_internal.c =================================================================== RCS file: /data/cvs/libvirt/src/xend_internal.c,v retrieving revision 1.148 diff -u -p -r1.148 xend_internal.c --- src/xend_internal.c 15 Oct 2007 21:38:56 -0000 1.148 +++ src/xend_internal.c 17 Oct 2007 08:29:26 -0000 @@ -692,6 +692,10 @@ xend_op(virConnectPtr xend, const char * */ static struct sexpr * sexpr_get(virConnectPtr xend, const char *fmt, ...) + __attribute__ ((__format__ (__printf__, 2, 3))); + +static struct sexpr * +sexpr_get(virConnectPtr xend, const char *fmt, ...) { char buffer[4096]; char path[1024];