mirror of
https://github.com/ethereum/solidity
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13 lines
540 B
Solidity
13 lines
540 B
Solidity
contract test {
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function f() public pure returns (bool) {
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int256 x = -2**255;
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unchecked { assert(-x == x); }
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assert(-x == x); // CHC apparently does not create an underflow target for unary minus
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return true;
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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: (110-125='assert(-x == x)'): CHC: Assertion violation happens here.\nCounterexample:\n\n = false\nx = (- 57896044618658097711785492504343953926634992332820282019728792003956564819968)\n\nTransaction trace:\ntest.constructor()\ntest.f()
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