mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
23 lines
589 B
Solidity
23 lines
589 B
Solidity
type U8 is uint8;
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function checkedAdd(U8 x, U8 y) pure returns (U8) {
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return U8.wrap(U8.unwrap(x) + U8.unwrap(y));
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}
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using {checkedAdd as +} for U8 global;
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contract C {
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function testCheckedOperator() public pure returns (U8) {
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return U8.wrap(250) + U8.wrap(10);
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}
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function testCheckedOperatorInUncheckedBlock() public pure returns (U8) {
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unchecked {
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return U8.wrap(250) + U8.wrap(10);
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}
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}
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}
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// ----
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// testCheckedOperator() -> FAILURE, hex"4e487b71", 0x11
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// testCheckedOperatorInUncheckedBlock() -> FAILURE, hex"4e487b71", 0x11
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