mirror of
https://github.com/ethereum/solidity
synced 2023-10-03 13:03:40 +00:00
29 lines
1.1 KiB
Solidity
29 lines
1.1 KiB
Solidity
pragma experimental ABIEncoderV2;
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contract C {
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struct S { function() external f; }
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function ggg(function() external x) external pure returns (uint256 r) {
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assembly { r := calldataload(4) }
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}
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function h(S calldata x) external pure returns (uint256 r) {
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x.f; // validation only happens here
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assembly { r := calldataload(4) }
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}
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function dummy() external {}
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function ffff(uint256 a) external view returns (uint256, uint256) {
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S memory s = S(this.dummy);
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assembly { mstore(s, a) }
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return (this.ggg(s.f), this.h(s));
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}
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}
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// ----
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// ffff(uint256): 0 -> 0, 0
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// ggg(function): 0 -> 0
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// ffff(uint256): "01234567890123456789abcd" -> "01234567890123456789abcd", "01234567890123456789abcd"
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// ggg(function): "01234567890123456789abcd" -> "01234567890123456789abcd"
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// h((function)): "01234567890123456789abcd" -> "01234567890123456789abcd"
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// h((function)): 0 -> 0
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// ffff(uint256): "01234567890123456789abcdX" -> "01234567890123456789abcd", "01234567890123456789abcd"
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// ggg(function): "01234567890123456789abcdX" -> FAILURE
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// h((function)): "01234567890123456789abcdX" -> FAILURE
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