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Question #28 Difficulty: 2

According to the Solidity 0.8.17 compiler (200 optimization runs) 

    // Fill in the blank so that a call to C.g() executes without issues:

contract C {
  struct S {
    uint256 x;
  }

  S private s;

  function f(S ____ myStruct) private { // <--- blank
    myStruct.x = 2;
  }

  function g() external {
    f(s);
    require (s.x == 2);
  }
}

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