mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
39 lines
1.0 KiB
Solidity
39 lines
1.0 KiB
Solidity
contract C {
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function f() public pure {
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bytes memory x = new bytes(0);
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assert(x.length == 0);
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}
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function g() public pure {
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bytes memory x = new bytes(3);
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assert(x.length == 3);
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assert(x[0] == 0);
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assert(x[1] == 0);
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assert(x[2] == 0);
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}
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function h() public pure {
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bytes memory x = new bytes(3);
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assert(x.length == 3);
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x[0] = 0x12;
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x[1] = 0x34;
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assert(x[0] == 0x12);
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assert(x[1] == 0x34);
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// This should be an out-of-bounds assertion.
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x[5] = 0xff;
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assert(x[5] == 0xff);
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}
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function h(uint size) public pure {
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bytes memory x = new bytes(size);
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assert(x.length == size);
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require(size >= 2);
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x[0] = 0x12;
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x[1] = 0x34;
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assert(x[0] == 0x12);
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assert(x[1] == 0x34);
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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 6368: (468-472): CHC: Out of bounds access happens here.\nCounterexample:\n\nx = [0x12, 0x34, 0x0]\n\nTransaction trace:\nC.constructor()\nC.h()
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// Warning 6368: (490-494): CHC: Out of bounds access happens here.\nCounterexample:\n\nx = [0x12, 0x34, 0x0]\n\nTransaction trace:\nC.constructor()\nC.h()
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