X-Git-Url: https://git.octo.it/?p=rrdtool.git;a=blobdiff_plain;f=src%2Frrd_update.c;h=0335a9ef27670a37e1e10675ac3281dac8f9d710;hp=83ef7064347ab615f1b09950f27b94fb18f28f4b;hb=096bb3f53482c95c3d2dd09e8c7b2329f6c1c2ff;hpb=2c2a2654452de47d1504e7a5b6e4e63d0abb860e

diff --git a/src/rrd_update.c b/src/rrd_update.c
index 83ef706..0335a9e 100644
--- a/src/rrd_update.c
+++ b/src/rrd_update.c
@@ -1,5 +1,5 @@
 /*****************************************************************************
- * RRDtool 1.4.2  Copyright by Tobi Oetiker, 1997-2009
+ * RRDtool 1.4.3  Copyright by Tobi Oetiker, 1997-2010
  *                Copyright by Florian Forster, 2008
  *****************************************************************************
  * rrd_update.c  RRD Update Function
@@ -1354,6 +1354,10 @@ static int process_pdp_st(
 
         rpnp =
             rpn_expand((rpn_cdefds_t *) &(rrd->ds_def[ds_idx].par[DS_cdef]));
+        if(rpnp == NULL) {
+          rpnstack_free(&rpnstack);
+          return -1;
+        }
         /* substitute data values for OP_VARIABLE nodes */
         for (i = 0; rpnp[i].op != OP_END; i++) {
             if (rpnp[i].op == OP_VARIABLE) {
@@ -1367,6 +1371,7 @@ static int process_pdp_st(
             rpnstack_free(&rpnstack);
             return -1;
         }
+        free(rpnp);
     }
 
     /* make pdp_prep ready for the next run */