solidity/test/libsolidity/semanticTests/libraries/bound_to_calldata.sol

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library D {
function f(bytes calldata _x) internal pure returns (byte) {
return _x[0];
}
function g(bytes memory _x) internal pure returns (byte) {
return _x[0];
}
}
contract C {
using D for bytes;
function f(bytes calldata _x) public pure returns (byte, byte) {
return (_x.f(), _x.g());
}
}
// ====
// compileViaYul: also
// ----
// f(bytes): 0x20, 4, "abcd" -> 0x6100000000000000000000000000000000000000000000000000000000000000, 0x6100000000000000000000000000000000000000000000000000000000000000