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Fix dirty bits in upper bits in implementation address in Clones.sol (#5069)

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Co-authored-by: ernestognw <ernestognw@gmail.com>
This commit is contained in:
Hadrien Croubois
2024-06-14 18:29:05 +02:00
committed by GitHub
parent 8a990e6d6a
commit 83c7e45092
2 changed files with 52 additions and 12 deletions
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42
test/proxy/Clones.t.sol
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@ -6,6 +6,10 @@ import {Test} from "forge-std/Test.sol";
import {Clones} from "@openzeppelin/contracts/proxy/Clones.sol";
contract ClonesTest is Test {
function getNumber() external pure returns (uint256) {
return 42;
}
function testSymbolicPredictDeterministicAddressSpillage(address implementation, bytes32 salt) public {
address predicted = Clones.predictDeterministicAddress(implementation, salt);
bytes32 spillage;
@ -15,4 +19,42 @@ contract ClonesTest is Test {
}
assertEq(spillage, bytes32(0));
}
function testCloneDirty() external {
address cloneClean = Clones.clone(address(this));
address cloneDirty = Clones.clone(_dirty(address(this)));
// both clones have the same code
assertEq(keccak256(cloneClean.code), keccak256(cloneDirty.code));
// both clones behave as expected
assertEq(ClonesTest(cloneClean).getNumber(), this.getNumber());
assertEq(ClonesTest(cloneDirty).getNumber(), this.getNumber());
}
function testCloneDeterministicDirty(bytes32 salt) external {
address cloneClean = Clones.cloneDeterministic(address(this), salt);
address cloneDirty = Clones.cloneDeterministic(_dirty(address(this)), ~salt);
// both clones have the same code
assertEq(keccak256(cloneClean.code), keccak256(cloneDirty.code));
// both clones behave as expected
assertEq(ClonesTest(cloneClean).getNumber(), this.getNumber());
assertEq(ClonesTest(cloneDirty).getNumber(), this.getNumber());
}
function testPredictDeterministicAddressDirty(bytes32 salt) external {
address predictClean = Clones.predictDeterministicAddress(address(this), salt);
address predictDirty = Clones.predictDeterministicAddress(_dirty(address(this)), salt);
//prediction should be similar
assertEq(predictClean, predictDirty);
}
function _dirty(address input) private pure returns (address output) {
assembly ("memory-safe") {
output := or(input, shl(160, not(0)))
}
}
}