Ticket #55705: 55705.diff

src/wp-includes/blocks.php

@@ -424 +424 @@
 function has_blocks( $post = null ) {
         if ( ! is_string( $post ) ) {
                 $wp_post = get_post( $post );
+
+                if ( null === $wp_post ) {
+                        _doing_it_wrong(
+                                __FUNCTION__,
+                                sprintf(
+                                        /* translators: %s: The $post variable. */
+                                        __( '%s is not a valid post.'),
+                                        '<code>$post</code>'
+                                ),
+                                '6.1.0'
+                        );
+
+                        return false;
+                }
+
                 if ( $wp_post instanceof WP_Post ) {
                         $post = $wp_post->post_content;
                 }

tests/phpunit/tests/blocks/register.php

@@ -551 +551 @@
                 $this->assertFalse( has_blocks( $content ) );
         }
 
+        /**
+         * @ticket 55705
+         *
+         * @expectedIncorrectUsage has_blocks
+         *
+         * @covers ::has_blocks
+         */
+        public function test_has_blocks_with_invalid_post() {
+                $a_post = (object) array( 'ID' => 13585, 'filter' => 'display' );
+                $this->assertFalse( has_blocks( $a_post ) );
+        }
+
         /**
          * @ticket 49615
          */