Ticket #15250: 15250.2.patch

wp-includes/taxonomy.php

@@ -520 +520 @@
  * @param string $primary_id_column
  * @return array
  */
-function get_tax_sql( $tax_query, $primary_table, $primary_id_column ) {
+function get_tax_sql( $tax_query, $primary_table, $primary_id_column, $context = null ) {
         global $wpdb;
 
         $join = '';
@@ -616 +616 @@
         else
                 $where = '';
 
-        return compact( 'join', 'where' );
+        return apply_filters_ref_array( 'get_tax_sql', array( compact( 'join', 'where' ), $tax_query, $primary_table, $primary_id_column, $context ) );
 }
 
 function _transform_terms( &$terms, $taxonomies, $field, $resulting_field ) {