2020-12-10 13:06:34 +00:00
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contract C {
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function abiencodePackedHash(uint a, uint b) public pure {
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require(a == b);
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bytes memory b1 = abi.encodePacked(a, a, a, a);
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bytes memory b2 = abi.encodePacked(b, a, b, a);
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assert(keccak256(b1) == keccak256(b2));
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bytes memory b3 = abi.encode(a, a, a, a);
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assert(keccak256(b1) == keccak256(b3)); // should fail
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}
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}
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2021-03-31 15:11:54 +00:00
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// ====
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// SMTEngine: all
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2022-08-26 12:33:59 +00:00
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// SMTIgnoreOS: macos
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2020-12-10 13:06:34 +00:00
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// ----
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2022-08-26 12:33:59 +00:00
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// Warning 6328: (281-319): CHC: Assertion violation happens here.\nCounterexample:\n\na = 0\nb = 0\n\nTransaction trace:\nC.constructor()\nC.abiencodePackedHash(0, 0)
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