mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
41 lines
1.2 KiB
Solidity
41 lines
1.2 KiB
Solidity
contract C {
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function leftU(uint8 x, uint8 y) internal pure returns (uint8) {
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return x << y;
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}
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function leftS(int8 x, uint8 y) internal pure returns (int8) {
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return x << y;
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}
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function t() public pure {
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assert(leftU(255, 8) == 0);
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// Fails because the above is true.
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assert(leftU(255, 8) == 1);
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assert(leftU(255, 1) == 254);
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// Fails because the above is true.
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assert(leftU(255, 1) == 255);
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assert(leftU(255, 0) == 255);
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// Fails because the above is true.
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assert(leftU(255, 0) == 0);
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assert(leftS(1, 7) == -128);
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// Fails because the above is true.
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assert(leftS(1, 7) == 127);
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assert(leftS(1, 6) == 64);
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// Fails because the above is true.
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assert(leftS(1, 6) == -64);
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}
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}
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// ====
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// SMTEngine: all
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// ----
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// Warning 6328: (307-333): CHC: Assertion violation happens here.
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// Warning 6328: (408-436): CHC: Assertion violation happens here.
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// Warning 6328: (511-537): CHC: Assertion violation happens here.
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// Warning 6328: (611-637): CHC: Assertion violation happens here.
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// Warning 6328: (709-735): CHC: Assertion violation happens here.
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// Info 1391: CHC: 5 verification condition(s) proved safe! Enable the model checker option "show proved safe" to see all of them.
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