mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
22 lines
514 B
Solidity
22 lines
514 B
Solidity
contract C {
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uint[] data;
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function val() public returns (bool) {
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assembly {
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sstore(0, 2)
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mstore(0, 0)
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sstore(keccak256(0, 32), 234)
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// A bug in the caching mechanism previously caused keccak256(0, 23) to be the same as
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// keccak256(0, 32), leading to `data[1] == 123` being true.
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sstore(add(keccak256(0, 23), 1), 123)
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}
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assert(data[1] != 123);
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assert(data[1] == 0);
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return true;
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}
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}
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// ====
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// compileViaYul: also
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// ----
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// val() -> true
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