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Migrate contracts to Solidity 0.7 (#2319)

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* Update contract pragmas to solidity 0.7

* Remove internal declaration on constructors

* Reference SafeMath explicitely

* Remove public constructor declaration from abstract contracts

* Remove public constructor declaration from non-abstract contracts
This commit is contained in:
Elena Gesheva
2020-07-30 00:11:32 +03:00
committed by GitHub
parent 09014f90f9
commit 04fc35707d
125 changed files with 194 additions and 193 deletions
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2
contracts/access/AccessControl.sol
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@ -1,6 +1,6 @@
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
pragma solidity ^0.7.0;
import "../utils/EnumerableSet.sol";
import "../utils/Address.sol";

4
contracts/access/Ownable.sol
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@ -1,6 +1,6 @@
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
pragma solidity ^0.7.0;
import "../GSN/Context.sol";
/**
@ -23,7 +23,7 @@ contract Ownable is Context {
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () internal {
constructor () {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);