mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
30 lines
521 B
Solidity
30 lines
521 B
Solidity
pragma experimental SMTChecker;
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abstract contract Crypto {
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function hash(bytes32) external pure virtual returns (bytes32);
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}
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contract C {
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address owner;
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bytes32 sig_1;
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bytes32 sig_2;
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Crypto d;
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constructor() {
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owner = msg.sender;
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}
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function f1(bytes32 _msg) public {
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address prevOwner = owner;
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sig_1 = d.hash(_msg);
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sig_2 = d.hash(_msg);
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assert(prevOwner == owner);
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}
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function inv() public view {
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assert(sig_1 == sig_2);
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}
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}
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// ----
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// Warning 4661: (423-445): Assertion violation happens here
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