Reading an input file using std.textio

The problem isn't anything to do with where your stimulus file is on disk, the error is coming from the parser, indicating something is wrong with your source code. I can't see anything obviously wrong with your code, so it might be dependent on something from a line above this one. Can you reproduce this in some trivial example, or at least show us what's on the preceding lines?

The syntax for declaring an input file changed between the '87 and '93 versions of VHDL. If you are using -v93 or -v200x you can declare your file like:

    file input_file: text is "test_in.txt";

Sorry, I should have posted more of the code.

I'm using basically this:

process
    FILE vector_file_in: text IS "test_in.txt";
    VARIABLE input_line : line;
    VARIABLE str_stimulus_in: string(8 DOWNTO 1);

begin
    WHILE NOT endfile(vector_file_in) LOOP
        readline(vector_file_in, input_line);
        read(input_line, str_stimulus_in);
        -- tests
    end loop;
end process;

I am using -v93, so may be this the problem. But Modelsim is also configured to use it and works fine.
Unfortunately I can only test next week.

Thanks!

    

This compiles without complaint with the -v93 option. It is the extra keyword "in" that is required by the '87 standard and appears in your original example that leads to the ILLPRI error.

That worked. Just had to remove the "in" keyword. Thank you!