[wp-trac] [WordPress Trac] #49445: Only one argument passed to wp_login callback.

[WordPress Trac]

#49445: Only one argument passed to wp_login callback.
------------------------------------+-----------------------------
 Reporter:  tmfhokies               |      Owner:  (none)
     Type:  defect (bug)            |     Status:  new
 Priority:  normal                  |  Milestone:  Awaiting Review
Component:  Login and Registration  |    Version:  5.3.2
 Severity:  normal                  |   Keywords:
  Focuses:                          |
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 Hook into the wp_login action from a barebones plugin.

 {{{#!php
 <?php
 /**
  * Plugin Name: wp_login hook issue
  */
 add_action('wp_login', function ($user_login, $user) {
 });
 }}}

 Activate the "wp_login hook issue" plugin, log out, try to log in. That
 results in an "PHP Fatal error:  Uncaught ArgumentCountError: Too few
 arguments to function".

 Even though the do_action call passes both
 (https://core.trac.wordpress.org/browser/tags/5.3/src/wp-
 includes/user.php#L110), the closure only receives $user_login.

 Tried with PHP 7.2.22.

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Ticket URL: <https://core.trac.wordpress.org/ticket/49445>
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