No error on invalid Fortran file

[hiker]

While I was trying to use the dependency creation tool of fparser (in examples), I realised that if there should be an error in a Fortan file, the whole program just aborts. My program (at this stage) was just a stub with a typo in the end module statement (name not matching the module name):

module compute_born_mod

    private
    public compute_born

contains

    subroutine compute_born(grid, born, current)
        implicit none
    end subroutine compute_born

end module compute_born

The dependency creator loops over all files, and dies when parsing. E.g. (shortened):

    for filename in all_files:
        # Parse the current source file:
        try:
            reader = FortranFileReader(filename)
        except IOError:
            print("Could not open file '{0}'.".format(filename),
                  file=sys.stderr)
            sys.exit(-1)
        parser = ParserFactory().create(std="f2003")
        parse_tree = parser(reader)
        ....

The program just exists in the parse(reader) statement - no error message, no other loop iterations (for filename in all_files) are executed anymore. It should ideally raise an exception, or if it really has to abort, at least print an error message with the file name.