From 46fe7ee76d63aa027d139e6f122ec8ebb9608be0 Mon Sep 17 00:00:00 2001
From: Francisco Giordano <frangio.1@gmail.com>
Date: Sun, 2 Jul 2017 16:51:26 -0300
Subject: [PATCH] guard against beneficiary == 0x0

---
 contracts/crowdsale/Crowdsale.sol | 1 +
 1 file changed, 1 insertion(+)

diff --git a/contracts/crowdsale/Crowdsale.sol b/contracts/crowdsale/Crowdsale.sol
index 7e071f11e..04244dca7 100644
--- a/contracts/crowdsale/Crowdsale.sol
+++ b/contracts/crowdsale/Crowdsale.sol
@@ -67,6 +67,7 @@ contract Crowdsale {
 
   // low level token purchase function
   function buyTokens(address beneficiary) payable {
+    require(beneficiary != 0x0);
     require(purchaseValid());
 
     uint256 weiAmount = msg.value;