mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
34 lines
1.2 KiB
Solidity
34 lines
1.2 KiB
Solidity
interface Identity {
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function selectorAndAppendValue(uint value) external pure returns (uint);
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}
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interface ReturnMoreData {
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function f(uint value) external pure returns (uint, uint, uint);
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}
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contract C {
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Identity constant i = Identity(address(0x0004));
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function testHighLevel() external pure returns (bool) {
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// Works because the extcodesize check is skipped
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// and the precompiled contract returns actual data.
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i.selectorAndAppendValue(5);
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return true;
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}
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function testHighLevel2() external pure returns (uint, uint, uint) {
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// Fails because the identity contract does not return enough data.
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return ReturnMoreData(address(4)).f(2);
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}
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function testLowLevel() external view returns (uint value) {
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(bool success, bytes memory ret) =
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address(4).staticcall(
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abi.encodeWithSelector(Identity.selectorAndAppendValue.selector, uint(5))
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);
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value = abi.decode(ret, (uint));
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}
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}
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// ====
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// EVMVersion: >=constantinople
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// ----
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// testHighLevel() -> true
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// testLowLevel() -> 0xc76596d400000000000000000000000000000000000000000000000000000000
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// testHighLevel2() -> FAILURE
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