X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=src%2Frrd_open.c;h=f262413befce5f8e9f561b4d32eef0bfaef8a87f;hp=27965062ae811df26367e41371579f5604951818;hb=428c0dfd6c70a0e70039d15c2de3a729e01f8fef;hpb=080a38ee54e591efe5502395bea152c75e205779

diff --git a/src/rrd_open.c b/src/rrd_open.c
index 2796506..f262413 100644
--- a/src/rrd_open.c
+++ b/src/rrd_open.c
@@ -364,6 +364,13 @@ void rrd_dontneed(
     unsigned long i;
     ssize_t   _page_size = sysconf(_SC_PAGESIZE);
 
+    if (rrd_file == NULL) {
+#if defined DEBUG && DEBUG
+	    fprintf (stderr, "rrd_dontneed: Argument 'rrd_file' is NULL.\n");
+#endif
+	    return;
+    }
+
 #if defined DEBUG && DEBUG > 1
     mincore_print(rrd_file, "before");
 #endif