PDOException:Invalid text representation when attempting to load a view with a string argument

This error pops up on Postgres. Other engines seems silently to ignore it. Attached a very simple example view that allow you to enter a nid as argument.

Reproduce error

• Install on PostgreSQL 9.1/92
• Clean Drupal 7 and views (latest stable or HEAD).
• Install view
• Import attached view.
• If you like create a few test nodes.
• Load the views page and verify that it lists the nodes
• Enter a nid as a argument and verify that is works as expected.
• Enter a string as argument and you should get a beautiful PDOException

PDOException: SQLSTATE[22P02]: Invalid text representation: 7 ERROR: invalid input syntax for integer: "foo" LINE 1: SELECT n.title FROM node n WHERE n.nid IN ('foo') ^: SELECT n.title FROM {node} n WHERE n.nid IN (:nids_0); Array ( [:nids_0] => foo ) in views_handler_argument_node_nid->title_query() (line 18 of /prototype/views/drupal-7.17/sites/all/modules/views/modules/node/views_handler_argument_node_nid.inc).

I think it is this code is what fails.

<?php
  function validate_argument_basic($arg) {
    if (!isset($arg) || $arg === '') {
      return FALSE;
    }
    if (!empty($this->definition['numeric']) && !isset($this->options['break_phrase']) && !is_numeric($arg)) {
      return FALSE;
    }
    return TRUE;
  }
?>

Debugging this and I get this where it fails and it is indeed returning TRUE when I should return FALSE.
Is it numeric?: 1
break_phrase: 0
arg: sfdf
returns TRUE