From 0618030750583c530de17ddecc542cfdd2b569a7 Mon Sep 17 00:00:00 2001
From: oetiker <oetiker@a5681a0c-68f1-0310-ab6d-d61299d08faa>
Date: Thu, 29 Apr 2010 05:40:59 +0000
Subject: [PATCH] when using CDEF datasources in rrd, the rpnp in
 process_pdp_st (allocated in rpn_expand) in is never freed -- Frederik
 Kriewitz

git-svn-id: svn://svn.oetiker.ch/rrdtool/trunk@2073 a5681a0c-68f1-0310-ab6d-d61299d08faa
---
 program/src/rrd_rpncalc.c | 4 +++-
 program/src/rrd_update.c  | 5 +++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/program/src/rrd_rpncalc.c b/program/src/rrd_rpncalc.c
index e392a656..dca2ae13 100644
--- a/program/src/rrd_rpncalc.c
+++ b/program/src/rrd_rpncalc.c
@@ -72,8 +72,10 @@ rpnp_t   *rpn_expand(
     /* DS_CDEF_MAX_RPN_NODES is small, so at the expense of some wasted
      * memory we avoid any reallocs */
     rpnp = (rpnp_t *) calloc(DS_CDEF_MAX_RPN_NODES, sizeof(rpnp_t));
-    if (rpnp == NULL)
+    if (rpnp == NULL) {
+        rrd_set_error("failed allocating rpnp array");
         return NULL;
+    }
     for (i = 0; rpnc[i].op != OP_END; ++i) {
         rpnp[i].op = rpnc[i].op;
         if (rpnp[i].op == OP_NUMBER) {
diff --git a/program/src/rrd_update.c b/program/src/rrd_update.c
index 4016d757..0335a9ef 100644
--- a/program/src/rrd_update.c
+++ b/program/src/rrd_update.c
@@ -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 */
-- 
2.30.2