Quartus reports:can't pass value from actual to argument xxx.

Consider the following code:

interface test_if# (
    parameter BITW = 16
);
    logic  sigs;
endinterface
package test_pkg;
    function automatic int test_calc(int bitw);
        return bitw + 1;
    endfunction
endpackage
module test_mod# (
    parameter BITW = 8
) ( input bit clk, input wire rst);
    test_if# (.BITW(BITW)) tifi();
    localparam int bitw_ofcalc = test_pkg::test_calc($size(tifi.sigs,1));    // on this line Quartus reports error message: can't pass value from actual to argument bitw
    initial $warning("DEBUG: bitw_ofcalc = %0d", bitw_ofcalc);

When synthesizing, quartus's integrated synthesizer report an error message just like the comments in code.

I don't know what's wrong in code, could any one help me? Thanks very much!