Question

Formal arguments specified as open arrays allows passing actual arguments of different sizes (i.e., different range and/or different number of elements), which facilitates writing more general C code that can handle SystemVerilog arrays of different sizes. The elements of an open array can be accessed in C by using the same range of indices and the same indexing as in SystemVerilog. Plus, inquiries about the dimensions and the original boundaries of SystemVerilog actual arguments are supported for open arrays.

NOTE—Both packed and unpacked array dimensions can be unsized.

All formal arguments declared in SystemVerilog as open arrays are passed by handle (type svOpenArray- Handle), regardless of the direction of a SystemVerilog formal argument. Such arguments are accessible via interface functions.