mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
37 lines
1.5 KiB
Solidity
37 lines
1.5 KiB
Solidity
pragma experimental SMTChecker;
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contract C {
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function abiencodePackedSlice(bytes calldata data) external pure {
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bytes memory b1 = abi.encodePacked(data);
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bytes memory b2 = abi.encodePacked(data[0:]);
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// should hold but the engine cannot infer that data is fully equals data[0:] because each index is assigned separately
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// Disabled because of Spacer nondeterminism
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//assert(b1.length == b2.length); // fails for now
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// Disabled because of Spacer nondeterminism
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//bytes memory b3 = abi.encodePacked(data[:data.length]);
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// should hold but the engine cannot infer that data is fully equals data[:data.length] because each index is assigned separately
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//assert(b1.length == b3.length); // fails for now
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bytes memory b4 = abi.encodePacked(data[5:10]);
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// Disabled because of Spacer nondeterminism
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//assert(b1.length == b4.length); // should fail
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uint x = 5;
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uint y = 10;
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bytes memory b5 = abi.encodePacked(data[x:y]);
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// should hold but the engine cannot infer that data[5:10] is fully equals data[x:y] because each index is assigned separately
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assert(b1.length == b5.length); // fails for now
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bytes memory b6 = abi.encode(data[5:10]);
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// Disabled because of Spacer nondeterminism
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//assert(b4.length == b6.length); // should fail
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}
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}
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// ====
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// SMTIgnoreCex: yes
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// ----
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// Warning 2072: (159-174): Unused local variable.
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// Warning 2072: (723-738): Unused local variable.
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// Warning 2072: (1131-1146): Unused local variable.
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// Warning 6328: (1079-1109): CHC: Assertion violation happens here.
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