Update to lastest solc changes

.travis.yml

@@ -5,4 +5,5 @@ cache:
   directories:
     - node_modules
 before_script: 
+- cd node_modules/truffle && npm install [email protected]
 - truffle compile

README.md

@@ -50,7 +50,7 @@ solidity_flattener contracts/modules/SocialRecoveryModule.sol --output build/fla
 solidity_flattener contracts/modules/StateChannelModule.sol --output build/flattened_contracts/StateChannelModule.sol --solc-paths="="
 solidity_flattener contracts/modules/WhitelistModule.sol --output build/flattened_contracts/WhitelistModule.sol --solc-paths="="
 solidity_flattener contracts/proxies/ProxyFactory.sol --output build/flattened_contracts/ProxyFactory.sol
-find build/flattened_contracts -name '*.sol' -exec sed -i '' 's/pragma solidity ^0.4.13;/pragma solidity ^0.4.24;/g' {} \;
+find build/flattened_contracts -name '*.sol' -exec sed -i '' 's/pragma solidity ^0.4.13;/pragma solidity ^0.5.0;/g' {} \;
 ```
 
 Zeppelin OS

contracts/GnosisSafe.sol

@@ -1,10 +1,10 @@
-pragma solidity ^0.4.24;
+pragma solidity ^0.5.0;
 import "./base/BaseSafe.sol";
 import "./common/MasterCopy.sol";
 import "./common/SignatureDecoder.sol";
 import "./common/SecuredTokenTransfer.sol";
 import "./interfaces/ISignatureValidator.sol";
-import "openzeppelin-solidity/contracts/math/SafeMath.sol";
+import "./external/SafeMath.sol";
 
 /// @title Gnosis Safe - A multisignature wallet with support for confirmations using signed messages based on ERC191.
 /// @author Stefan George - <[email protected]>
@@ -67,22 +67,15 @@ contract GnosisSafe is MasterCopy, BaseSafe, SignatureDecoder, SecuredTokenTrans
     /// @param refundReceiver Address of receiver of gas payment (or 0 if tx.origin).
     /// @param signatures Packed signature data ({bytes32 r}{bytes32 s}{uint8 v})
     function execTransaction(
-<<<<<<< HEAD
         address to,
         uint256 value,
-        bytes data,
+        bytes memory data,
         Enum.Operation operation,
-=======
-        address to, 
-        uint256 value, 
-        bytes memory data, 
-        Enum.Operation operation, 
->>>>>>> dd768ad... Fix solidity 0.5.0 errors
         uint256 safeTxGas,
         uint256 dataGas,
         uint256 gasPrice,
         address gasToken,
-        address refundReceiver,
+        address payable refundReceiver,
         bytes memory signatures
     )
         public
@@ -115,13 +108,13 @@ contract GnosisSafe is MasterCopy, BaseSafe, SignatureDecoder, SecuredTokenTrans
         uint256 dataGas,
         uint256 gasPrice,
         address gasToken,
-        address refundReceiver
+        address payable refundReceiver
     )
         private
     {
         uint256 amount = startGas.sub(gasleft()).add(dataGas).mul(gasPrice);
         // solium-disable-next-line security/no-tx-origin
-        address receiver = refundReceiver == address(0) ? tx.origin : refundReceiver;
+        address payable receiver = refundReceiver == address(0) ? tx.origin : refundReceiver;
         if (gasToken == address(0)) {
             // solium-disable-next-line security/no-send
             require(receiver.send(amount), "Could not pay gas costs with ether");
@@ -231,13 +224,8 @@ contract GnosisSafe is MasterCopy, BaseSafe, SignatureDecoder, SecuredTokenTrans
     /**
     * @dev Marks a message as signed
     * @param _data Arbitrary length data that should be marked as signed on the behalf of address(this)
-<<<<<<< HEAD
-    */
-    function signMessage(bytes _data)
-=======
     */ 
     function signMessage(bytes memory _data) 
->>>>>>> dd768ad... Fix solidity 0.5.0 errors
         public
         authorized
     {
@@ -249,13 +237,8 @@ contract GnosisSafe is MasterCopy, BaseSafe, SignatureDecoder, SecuredTokenTrans
     * @param _data Arbitrary length data signed on the behalf of address(this)
     * @param _signature Signature byte array associated with _data
     * @return a bool upon valid or invalid signature with corresponding _data
-<<<<<<< HEAD
-    */
-    function isValidSignature(bytes _data, bytes _signature)
-=======
     */ 
     function isValidSignature(bytes memory _data, bytes memory _signature)
->>>>>>> dd768ad... Fix solidity 0.5.0 errors
         public
         returns (bool isValid)
     {
@@ -299,23 +282,13 @@ contract GnosisSafe is MasterCopy, BaseSafe, SignatureDecoder, SecuredTokenTrans
     /// @param _nonce Transaction nonce.
     /// @return Transaction hash bytes.
     function encodeTransactionData(
-<<<<<<< HEAD
-        address to,
-        uint256 value,
-        bytes data,
-        Enum.Operation operation,
-        uint256 safeTxGas,
-        uint256 dataGas,
-        uint256 gasPrice,
-=======
         address to, 
         uint256 value, 
         bytes memory data, 
         Enum.Operation operation, 
         uint256 safeTxGas, 
         uint256 dataGas, 
-        uint256 gasPrice, 
->>>>>>> dd768ad... Fix solidity 0.5.0 errors
+        uint256 gasPrice,
         address gasToken,
         address refundReceiver,
         uint256 _nonce
@@ -343,23 +316,13 @@ contract GnosisSafe is MasterCopy, BaseSafe, SignatureDecoder, SecuredTokenTrans
     /// @param _nonce Transaction nonce.
     /// @return Transaction hash.
     function getTransactionHash(
-<<<<<<< HEAD
-        address to,
-        uint256 value,
-        bytes data,
-        Enum.Operation operation,
-        uint256 safeTxGas,
-        uint256 dataGas,
-        uint256 gasPrice,
-=======
         address to, 
         uint256 value, 
         bytes memory data, 
         Enum.Operation operation, 
         uint256 safeTxGas, 
         uint256 dataGas, 
-        uint256 gasPrice, 
->>>>>>> dd768ad... Fix solidity 0.5.0 errors
+        uint256 gasPrice,
         address gasToken,
         address refundReceiver,
         uint256 _nonce

contracts/base/BaseSafe.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.24;
+pragma solidity ^0.5.0;
 import "./Module.sol";
 import "./ModuleManager.sol";
 import "./OwnerManager.sol";

contracts/base/Executor.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.24;
+pragma solidity ^0.5.0;
 import "../common/Enum.sol";
 import "../common/EtherPaymentFallback.sol";
 

contracts/base/Module.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.24;
+pragma solidity ^0.5.0;
 import "../common/MasterCopy.sol";
 import "./ModuleManager.sol";
 

contracts/base/ModuleManager.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.24;
+pragma solidity ^0.5.0;
 import "../common/Enum.sol";
 import "../common/SelfAuthorized.sol";
 import "./Executor.sol";

contracts/base/OwnerManager.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.24;
+pragma solidity ^0.5.0;
 import "../common/SelfAuthorized.sol";
 
 /// @title OwnerManager - Manages a set of owners and a threshold to perform actions.

contracts/common/Enum.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.24;
+pragma solidity ^0.5.0;
 
 
 /// @title Enum - Collection of enums

contracts/common/EtherPaymentFallback.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.24;
+pragma solidity ^0.5.0;
 
 
 /// @title EtherPaymentFallback - A contract that has a fallback to accept ether payments

contracts/common/MasterCopy.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.24;
+pragma solidity ^0.5.0;
 import "./SelfAuthorized.sol";
 
 

contracts/common/SecuredTokenTransfer.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.24;
+pragma solidity ^0.5.0;
 
 
 /// @title SecuredTokenTransfer - Secure token transfer

contracts/common/SelfAuthorized.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.24;
+pragma solidity ^0.5.0;
 
 
 /// @title SelfAuthorized - authorizes current contract to perform actions

contracts/common/SignatureDecoder.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.24;
+pragma solidity ^0.5.0;
 
 
 /// @title SignatureDecoder - Decodes signatures that a encoded as bytes

contracts/external/SafeMath.sol

@@ -0,0 +1,66 @@
+pragma solidity ^0.5.0;
+
+/**
+ * @title SafeMath
+ * @dev Math operations with safety checks that revert on error
+ * TODO: remove once open zeppelin update to solc 0.5.0
+ */
+library SafeMath {
+
+  /**
+  * @dev Multiplies two numbers, reverts on overflow.
+  */
+  function mul(uint256 a, uint256 b) internal pure returns (uint256) {
+    // Gas optimization: this is cheaper than requiring 'a' not being zero, but the
+    // benefit is lost if 'b' is also tested.
+    // See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
+    if (a == 0) {
+      return 0;
+    }
+
+    uint256 c = a * b;
+    require(c / a == b);
+
+    return c;
+  }
+
+  /**
+  * @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
+  */
+  function div(uint256 a, uint256 b) internal pure returns (uint256) {
+    require(b > 0); // Solidity only automatically asserts when dividing by 0
+    uint256 c = a / b;
+    // assert(a == b * c + a % b); // There is no case in which this doesn't hold
+
+    return c;
+  }
+
+  /**
+  * @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
+  */
+  function sub(uint256 a, uint256 b) internal pure returns (uint256) {
+    require(b <= a);
+    uint256 c = a - b;
+
+    return c;
+  }
+
+  /**
+  * @dev Adds two numbers, reverts on overflow.
+  */
+  function add(uint256 a, uint256 b) internal pure returns (uint256) {
+    uint256 c = a + b;
+    require(c >= a);
+
+    return c;
+  }
+
+  /**
+  * @dev Divides two numbers and returns the remainder (unsigned integer modulo),
+  * reverts when dividing by zero.
+  */
+  function mod(uint256 a, uint256 b) internal pure returns (uint256) {
+    require(b != 0);
+    return a % b;
+  }
+}

contracts/interfaces/ISignatureValidator.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.24;
+pragma solidity ^0.5.0;
 
 contract ISignatureValidator {
     /**

contracts/libraries/CreateAndAddModules.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.24;
+pragma solidity ^0.5.0;
 import "../base/Module.sol";
 
 

contracts/libraries/MultiSend.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.24;
+pragma solidity ^0.5.0;
 
 
 /// @title Multi Send - Allows to batch multiple transactions into one.

contracts/mocks/Token.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.23;
+pragma solidity ^0.5.0;
 import "@gnosis.pm/mock-contract/contracts/MockContract.sol";
 contract Token {
 	function transfer(address _to, uint value) public returns (bool);

contracts/modules/DailyLimitModule.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.24;
+pragma solidity ^0.5.0;
 import "../base/Module.sol";
 import "../base/ModuleManager.sol";
 import "../base/OwnerManager.sol";

contracts/modules/SocialRecoveryModule.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.24;
+pragma solidity ^0.5.0;
 import "../base/Module.sol";
 import "../base/ModuleManager.sol";
 import "../base/OwnerManager.sol";

contracts/modules/StateChannelModule.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.24;
+pragma solidity ^0.5.0;
 import "../base/Module.sol";
 import "../base/OwnerManager.sol";
 import "../common/SignatureDecoder.sol";

contracts/modules/WhitelistModule.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.24;
+pragma solidity ^0.5.0;
 import "../base/Module.sol";
 import "../base/ModuleManager.sol";
 import "../base/OwnerManager.sol";

contracts/proxies/DelegateConstructorProxy.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.24;
+pragma solidity ^0.5.0;
 import "./Proxy.sol";
 
 

contracts/proxies/PayingProxy.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.24;
+pragma solidity ^0.5.0;
 import "../common/SecuredTokenTransfer.sol";
 import "./DelegateConstructorProxy.sol";
 
@@ -13,7 +13,7 @@ contract PayingProxy is DelegateConstructorProxy, SecuredTokenTransfer {
     /// @param funder Address that should be paid for the execution of this call
     /// @param paymentToken Token that should be used for the payment (0 is ETH)
     /// @param payment Value that should be paid
-    constructor(address _masterCopy, bytes memory initializer, address funder, address paymentToken, uint256 payment) 
+    constructor(address _masterCopy, bytes memory initializer, address payable funder, address paymentToken, uint256 payment) 
         DelegateConstructorProxy(_masterCopy, initializer)
         public
     {

contracts/proxies/Proxy.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.24;
+pragma solidity ^0.5.0;
 
 
 /// @title Proxy - Generic proxy contract allows to execute all transactions applying the code of a master contract.

contracts/proxies/ProxyFactory.sol

@@ -1,4 +1,4 @@
-pragma solidity ^0.4.24;
+pragma solidity ^0.5.0;
 import "./Proxy.sol";