File hwloc-1.7-topo-fix.patch of Package hwloc

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File hwloc-1.7-topo-fix.patch of Package hwloc

From 2ea0f3c268034d4496ec5dd34cb4da63481d867b Mon Sep 17 00:00:00 2001
From: "Christopher M. Cantalupo" <christopher.m.cantalupo@intel.com>
Date: Thu, 21 Jul 2016 08:27:30 -0500
Subject: [PATCH] Do not allocate zero size buffer.

Signed-off-by: Christopher M. Cantalupo <christopher.m.cantalupo@intel.com>
---
 src/topology.c | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/src/topology.c b/src/topology.c
index 7f40e15..45b0088 100644
--- a/src/topology.c
+++ b/src/topology.c
@@ -2215,15 +2215,17 @@ hwloc_build_level_from_list(struct hwloc_obj *first, struct hwloc_obj ***levelp)
   }
   nb = i;
 
-  /* allocate and fill level */
-  *levelp = malloc(nb * sizeof(struct hwloc_obj *));
-  obj = first;
-  i = 0;
-  while (obj) {
-    obj->logical_index = i;
-    (*levelp)[i] = obj;
-    i++;
-    obj = obj->next_cousin;
+  if (nb) {
+    /* allocate and fill level */
+    *levelp = malloc(nb * sizeof(struct hwloc_obj *));
+    obj = first;
+    i = 0;
+    while (obj) {
+      obj->logical_index = i;
+      (*levelp)[i] = obj;
+      i++;
+      obj = obj->next_cousin;
+    }
   }
 
   return nb;
-- 
1.8.3.1

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File hwloc-1.7-topo-fix.patch of Package hwloc

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