[wp-trac] [WordPress Trac] #38048: Weird behaviour of "add_action('wp_login', 'func')" in combination with wishlist member

[WordPress Trac]

#38048: Weird behaviour of "add_action('wp_login','func')" in combination with
wishlist member
-----------------------------------------------+---------------------------
 Reporter:  jobst                              |      Owner:
     Type:  defect (bug)                       |     Status:  new
 Priority:  normal                             |  Milestone:  Awaiting
Component:  General                            |  Review
 Severity:  normal                             |    Version:  4.6.1
  Focuses:  ui, accessibility, administration  |   Keywords:
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 Hi

 I added a ticket at wishlist as well as I cannot figure out where this
 problem is starting.
 I am also not sure when this started but I cannot see changes in the login
 time of Wishlist members - so I debugged.

 Wishlist adds a function to the list of hooks for wp_login in its main
 file wpm.php like so
  add_action('wp_login', array(&$WishListMemberInstance, 'Login'));

 I turned off all plugins that were not needed for this and only kept the
 required ones, e.g. wishlist. woocommerce e.g.

 I put a line at the end of my functions.php with a marker file like so:
 add_action('wp', function(){ error_log("HERE_HERE_HERE_HERE");
 error_log(print_r($GLOBALS['wp_filter']['wp_login'],1)); exit; } );

 I then basically accessed the "my_account" page.
 The php log file did NOT show an entry of wishlist in the wp_login action
 hook array.

 I then disabled every action hook for wp_login, even mine.
 The php log file STILL did NOT show an entry of wishlist in the wp_login
 action hook array.

 Then I changed in the file wpm.php from
   add_action('wp_login', array(&$WishListMemberInstance, 'Login'));
 to
   add_action('wp_login', array(&$WishListMemberInstance, 'Login'),20,2);

 and sure enough it showed up, and the login time for the members changed.

 I looked at the function "add_action" and "add_filter" but I could not see
 anything what could prevent the login member function to be added.

 So is this a bug?
 Is this because of the sheer size of &$WishListMemberInstance that
 add_action does not want to do it?

 However, just before the class definition of WishlistMember I added a
 function called "MyTestFunction" and replaced the
 "array(&$WishListMemberInstance,'Login')" with 'MyTestFunction' and looked
 at the debug output and sure enough the function was added to the list of
 wp_login hooks.

 I added a ticket to wishlist as well.

 Jobst

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Ticket URL: <https://core.trac.wordpress.org/ticket/38048>
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