From: Florian Forster <octo@collectd.org>
Date: Tue, 2 Sep 2014 17:50:47 +0000 (+0200)
Subject: src/meta_data.c: If the meta_data_t is empty, avoid calling malloc(0).
X-Git-Tag: collectd-5.3.2~45
X-Git-Url: https://git.octo.it/?p=collectd.git;a=commitdiff_plain;h=670dd12b750843cf83ac3cf052b4c2d8b635c212

src/meta_data.c: If the meta_data_t is empty, avoid calling malloc(0).
---

diff --git a/src/meta_data.c b/src/meta_data.c
index ea98ba94..1b587352 100644
--- a/src/meta_data.c
+++ b/src/meta_data.c
@@ -313,7 +313,13 @@ int meta_data_toc (meta_data_t *md, char ***toc) /* {{{ */
   for (e = md->head; e != NULL; e = e->next)
     ++count;    
 
-  *toc = malloc(count * sizeof(**toc));
+  if (count == 0)
+  {
+    pthread_mutex_unlock (&md->lock);
+    return (count);
+  }
+
+  *toc = calloc(count, sizeof(**toc));
   for (e = md->head; e != NULL; e = e->next)
     (*toc)[i++] = strdup(e->key);