test/libsolidity/syntaxTests/controlFlow/uninitializedAccess/modifier_pre_access.sol


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contract C {
    uint[] s;
    modifier mod(uint[] storage b) {
        b[0] = 0;
        _;
    }
    function f() mod(a) internal returns (uint[] storage a)
    {
        a = s;
    }
}
// ----
// TypeError: (120-121): This variable is of storage pointer type and can be accessed without prior assignment.