debug.info

name = Debug
description = Helps debug a corrupted module_implements cache
core = 7.x

debug.module

<?php

/**
 * Implements hook_boot().
 */
function debug_boot() {
  // Ensure the module implements cache is cleared on every request so we can be guaranteed that it uses fresh data.
  module_implements('', FALSE, TRUE);
}

/**
 * Implements hook_module_implements_alter().
 */
function debug_module_implements_alter() {
  // Update.php runs hooks in an early bootstrap, but we don't care about that instance.
  if (drupal_get_bootstrap_phase() != DRUPAL_BOOTSTRAP_FULL && !defined('MAINTENANCE_MODE')) {
    echo "<pre>";
    echo "Something called module_implements() before a full bootstrap and all modules are loaded!\n\n";
    $backtrace = debug_backtrace();
    array_shift($backtrace);
    print_r($backtrace);
    echo "</pre>";
    die;
  }
}