From: Karel Zak <kzak@redhat.com>
Date: Mon, 26 Nov 2012 11:19:02 +0000 (+0100)
Subject: libmount: make debug stuff more robust
X-Git-Tag: v2.23-rc1~484
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=1e7f2e6cf46360143198a4662c0711cebf2ceab8;p=thirdparty%2Futil-linux.git

libmount: make debug stuff more robust

Signed-off-by: Karel Zak <kzak@redhat.com>
---

diff --git a/libmount/src/mountP.h b/libmount/src/mountP.h
index f28935d0d0..04dd077a81 100644
--- a/libmount/src/mountP.h
+++ b/libmount/src/mountP.h
@@ -89,7 +89,8 @@ mnt_debug_h(void *handler, const char *mesg, ...)
 {
 	va_list ap;
 
-	fprintf(stderr, "[%p]: ", handler);
+	if (handler)
+		fprintf(stderr, "[%p]: ", handler);
 	va_start(ap, mesg);
 	vfprintf(stderr, mesg, ap);
 	va_end(ap);