mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
34 lines
946 B
Solidity
34 lines
946 B
Solidity
pragma experimental SMTChecker;
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contract C {
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function f() public pure {
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uint v = 1;
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v &= 1;
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assert(v == 1);
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v = 7;
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v &= 3;
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assert(v != 3); // fails, as 7 & 3 = 3
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uint c = 0;
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c &= v;
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assert(c == 0);
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uint8 x = 0xff;
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uint16 y = 0xffff;
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y &= x;
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assert(y == 0xff);
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assert(y == 0xffff); // fails
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y = 0xffff;
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x = 0xff;
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y &= y | x;
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assert(y == 0xffff);
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assert(y == 0xff); // fails
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}
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}
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// ----
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// Warning 6328: (177-191): CHC: Assertion violation happens here.\nCounterexample:\n\n\nTransaction trace:\nC.constructor()\nC.f()
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// Warning 6328: (380-399): CHC: Assertion violation happens here.\nCounterexample:\n\n\nTransaction trace:\nC.constructor()\nC.f()
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// Warning 6328: (506-523): CHC: Assertion violation happens here.\nCounterexample:\n\n\nTransaction trace:\nC.constructor()\nC.f()
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