From 2c48caae665b6df8d2f7e0a6be2379d7983f096d Mon Sep 17 00:00:00 2001
From: r001 <rob@nyar.eu>
Date: Fri, 17 Nov 2017 13:38:33 +0100
Subject: [PATCH] add 'reserve' variable instead of hard coded gas of 5000 for
 delegatecall

---
 src/proxy.sol | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/src/proxy.sol b/src/proxy.sol
index 2a8b50f..1aa6832 100644
--- a/src/proxy.sol
+++ b/src/proxy.sol
@@ -27,6 +27,7 @@ import "ds-note/note.sol";
 // i.e. a multisig
 contract DSProxy is DSAuth, DSNote {
     DSProxyCache public cache;  // global cache for contracts
+    uint128 public reserve = 5000; // reserve gas after delegatecall
 
     function DSProxy(address _cacheAddr) public {
         require(setCache(_cacheAddr));
@@ -61,7 +62,7 @@ contract DSProxy is DSAuth, DSNote {
 
         // call contract in current context
         assembly {
-            let succeeded := delegatecall(sub(gas, 5000), _target, add(_data, 0x20), mload(_data), 0, 32)
+            let succeeded := delegatecall(sub(gas, reserve), _target, add(_data, 0x20), mload(_data), 0, 32)
             response := mload(0)      // load delegatecall output
             switch iszero(succeeded)
             case 1 {
@@ -82,6 +83,17 @@ contract DSProxy is DSAuth, DSNote {
         cache = DSProxyCache(_cacheAddr);  // overwrite cache
         return true;
     }
+
+    //set the reserve gas for contract after delegatecall
+    function setReserve(uint128 _gas) 
+    	public
+	auth
+	note
+	returns(bool)
+    {
+	reserve = _gas;
+	return true;
+    }
 }
 
 // DSProxyFactory