ModelSim/QuestaSim issues warning regarding ext_string_pkg

[nselvara]

Hi guys, once again when I run VUnit test ModelSim/QuestaSim (I'm using both) spit out warnings regarding the ext_string_pkg file.
The warnings are:

• \vunit\vhdl\data_types\src\api\external_integer_vector_pkg.vhd(40): Function 'read_integer' may complete without a RETURN at line 39.
• \vunit\vhdl\data_types\src\api\external_integer_vector_pkg.vhd(46): Function 'get_ptr' may complete without a RETURN at line 45.

The flagged lines of code are:

  impure function read_char (
    id : integer;
    i  : integer
  ) return character is begin
    assert false report "EXTERNAL read_char" severity failure;
    --! Return statement missing!
  end;

  impure function get_ptr (
    id : integer
  ) return extstring_access_t is begin
    assert false report "EXTERNAL get_string_ptr" severity failure;
    --! Return statement missing!
  end;

I think just adding a return statement with a dummy value, would do the trick or converting those to procedure may also do the trick:

  impure function read_char (
    id : integer;
    i  : integer
  ) return character is begin
    assert false report "EXTERNAL read_char" severity failure;
    return "";
  end;

  impure function get_ptr (
    id : integer
  ) return extstring_access_t is 
      variable dummy_ptr: extstring_access_t;
    begin
    assert false report "EXTERNAL get_string_ptr" severity failure;
    dummy_ptr := new extstring_access_t
    dummy_ptr.all; -- Don't know if the syntax is correct
  end;

Or

  procedure read_char (
    id : integer;
    i  : integer
  ) is begin
    assert false report "EXTERNAL read_char" severity failure;
  end;

  procedure get_ptr (
    id : integer
  )  is begin
    assert false report "EXTERNAL get_string_ptr" severity failure;
  end;