From 5dedf7a92bcd216e33705754896c65f394d97999 Mon Sep 17 00:00:00 2001
From: Noah Zinsmeister <noahwz@gmail.com>
Date: Thu, 21 Nov 2019 12:10:58 -0500
Subject: [PATCH] add require to rageQuit

---
 contracts/UniswapV2.sol | 1 +
 1 file changed, 1 insertion(+)

diff --git a/contracts/UniswapV2.sol b/contracts/UniswapV2.sol
index 025d266..eddd138 100644
--- a/contracts/UniswapV2.sol
+++ b/contracts/UniswapV2.sol
@@ -221,6 +221,7 @@ contract UniswapV2 is IUniswapV2, ERC20("Uniswap V2", "UNI-V2", 18, 0), SafeTran
             amounts.token0 = amountOutput = (liquidity.mul(reserves.token0) / totalSupply).downcast128();
             safeTransfer(token0, recipient, amounts.token0);
         } else {
+            require(output == token1, "UniswapV2: INVALID_OUTPUT");
             amounts.token1 = amountOutput = (liquidity.mul(reserves.token1) / totalSupply).downcast128();
             safeTransfer(token1, recipient, amounts.token1);
         }