Fails to detect bad file_mode when notify used

[maxb]

A file_mode warning which should be generated, is not.

Given this sample.pp:

service {
  'zero':
}

file {
  '/one':
    mode   => '755',
    notify => Service['zero'];

  '/two':
    mode => '755';
}

and

puppet-lint --config /dev/null sample.pp

one would expect file_mode warnings about both mode arguments.

But actually, only the first is warned about:

WARNING: mode should be represented as a 4 digit octal value or symbolic mode on line 7 (check: file_mode)

Something about the line

    notify => Service['zero'];

causes the following instance to not generate a lint warning.

Environment

$ puppet-lint --version
puppet-lint 4.2.0