diff --git a/[refs] b/[refs]
index 82d58a57bcad..0029f92d3c58 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 746a2a838deec3ef86ef6b7c3edd4207b9a351aa
+refs/heads/master: d9be9b90d6dc5e712ca5d6109691a8de753ce7f1
diff --git a/trunk/lib/vsprintf.c b/trunk/lib/vsprintf.c
index 1d659d7bb0f8..c11205688fb4 100644
--- a/trunk/lib/vsprintf.c
+++ b/trunk/lib/vsprintf.c
@@ -898,7 +898,7 @@ char *pointer(const char *fmt, char *buf, char *end, void *ptr,
 	case 'U':
 		return uuid_string(buf, end, ptr, spec, fmt);
 	case 'V':
-		return buf + vsnprintf(buf, end - buf,
+		return buf + vsnprintf(buf, end > buf ? end - buf : 0,
 				       ((struct va_format *)ptr)->fmt,
 				       *(((struct va_format *)ptr)->va));
 	case 'K':