From 0ceb51cbd7f959dc17a1977cba7a8427bf446fd2 Mon Sep 17 00:00:00 2001
From: James <james@arangodb.com>
Date: Mon, 3 Nov 2014 20:24:59 +0000
Subject: [PATCH] compiler warning.

---
 arangod/Aql/ExecutionBlock.cpp | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/arangod/Aql/ExecutionBlock.cpp b/arangod/Aql/ExecutionBlock.cpp
index 7c79a8ff9d..7b205b703c 100644
--- a/arangod/Aql/ExecutionBlock.cpp
+++ b/arangod/Aql/ExecutionBlock.cpp
@@ -3748,8 +3748,9 @@ size_t GatherBlock::skipSome (size_t atLeast, size_t atMost) {
 
   // the non-simple case . . .
   size_t available = 0; // nr of available rows
-  size_t index;         // an index of a non-empty buffer
-  
+  size_t index = 0;     // an index of a non-empty buffer
+  TRI_ASSERT(_dependencies.size() != 0); 
+
   // pull more blocks from dependencies . . .
   for (size_t i = 0; i < _dependencies.size(); i++) {
     if (_gatherBlockBuffer.at(i).empty()) {