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Contract Source Code:
File 1 of 1 : Proxy
pragma solidity 0.6.12; contract Proxy { // Code position in storage is: // keccak256("PROXIABLE") = "0xc5f16f0fcc639fa48a6947836d9850f504798523bf8c9a3a87d5876cf622bcf7" uint256 constant PROXIABLE_SLOT = 0xc5f16f0fcc639fa48a6947836d9850f504798523bf8c9a3a87d5876cf622bcf7; constructor(address contractLogic) public { // Verify a valid address was passed in require(contractLogic != address(0), "Contract Logic cannot be 0x0"); // save the code address assembly { // solium-disable-line sstore(PROXIABLE_SLOT, contractLogic) } } fallback() external payable { assembly { // solium-disable-line let contractLogic := sload(PROXIABLE_SLOT) let ptr := mload(0x40) calldatacopy(ptr, 0x0, calldatasize()) let success := delegatecall(gas(), contractLogic, ptr, calldatasize(), 0, 0) let retSz := returndatasize() returndatacopy(ptr, 0, retSz) switch success case 0 { revert(ptr, retSz) } default { return(ptr, retSz) } } } }
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