id,summary,reporter,owner,description,type,status,priority,milestone,component,version,severity,resolution,keywords,cc
23377,map_meta_cap() throws error from has_cap() from current_user_can(),wpsmith,,"Based on the [http://codex.wordpress.org/Function_Reference/current_user_can current documentation], current_user_can() only requires one argument, a capability. However, if I call it from the `save_post` hook with WP_DEBUG turned on, I will receive the following errors:

{{{
Notice: Undefined offset: 0 in /var/www/XXXX/htdocs/wp-includes/capabilities.php on line 1067
Notice: Undefined offset: 0 in /var/www/XXXX/htdocs/wp-includes/capabilities.php on line 1067
Notice: Undefined offset: 0 in /var/www/XXXX/htdocs/wp-includes/capabilities.php on line 1067
Warning: Cannot modify header information - headers already sent by (output started at /var/www/XXXX/htdocs/wp-includes/capabilities.php:1067) in /var/www/XXXX/htdocs/wp-includes/pluggable.php on line 876
}}}

As a result, the admin save post will die.

Basic Sample Code:
{{{
if ( ( 'page' == $post->post_type && ! current_user_can( 'edit_page' ) ) || ! current_user_can( 'edit_post' ) )
    return;
}}}

As a result, in my opinion `map_meta_cap()` should ensure that `$args[0]` exists.",defect (bug),new,normal,Awaiting Review,Role/Capability,,normal,,has-patch dev-feedback,jbrown510@…