test/libsolidity/syntaxTests/nameAndTypeResolution/018_forward_function_reference.sol


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contract First {
    function fun() public returns (bool) {
        return Second(1).fun(1, true, 3) > 0;
    }
}
contract Second {
    function fun(uint, bool, uint) public returns (uint) {
        if (First(2).fun() == true) return 1;
    }
}