dd function is not working for user without 'access devel information' permission

Recently dd() was modified in a couple of issues
#2559061: Fatal error: Cannot redeclare dd() - if the problem is related with this change make sure that there are not conflicts with other global function
#2191395: Make dpm() and friends pluggable (with Krumo, Kint, Ladybug etc) - we have introduced a pluggable dumper system which have replaced the old dd() implementation. Could be that this change causes the problem but I cannot reproduce it on my environment

@guilopes please can you indicate your devel configuration and the steps to reproduce the issue on a clean installation?

I experience the same trying to use dd function in a console context using drush. In such case, DevelDumperManager::hasAccessToDevelInformation() return false as it fail to retrieve any authenticated user. May be this can be solved by adding a test on cli context, something like :

<?php
/**
   * Checks whether a user has access to devel information.
   *
   * @return bool
   *   TRUE if the user has the permission, FALSE otherwise.
   */
  protected function hasAccessToDevelInformation() {

    if (PHP_SAPI === 'cli') {

      return TRUE;
    }

    return $this->account && $this->account->hasPermission('access devel information');
  }
?>

@dom18fr probably your problem is not related to the access checking. As you can see dd() (alias for \Drupal\devel\DevelDumperManager::debug()) writes the dump in the debug file in any case and only when it fails to write in the file checks the permission for show a message

  /**
   * {@inheritdoc}
   */
  public function debug($input, $name = NULL, $plugin_id = NULL) {
    $name = $name ? $name . ': ' : '';
    $output = $this->export($input, $name, $plugin_id) . "\n";
    // The temp directory does vary across multiple simpletest instances.
    $file = file_directory_temp() . '/drupal_debug.txt';
    if (file_put_contents($file, $output, FILE_APPEND) === FALSE && $this->hasAccessToDevelInformation()) {
      drupal_set_message(t('Devel was unable to write to %file.', ['%file' => $file]), 'error');
      return FALSE;
    }
  }

@willzyx thanks for repliying,
Actually, the DevelDumperManager::export() perform an access check using DevelDumperManager::hasAccessToDevelInformation, and it fails so $output is empty, resulting in writing nothing in drupal_debug.txt nor printing anything in the console.
My approach may be wrong, but the code snippet i post do solve my problem.

@dom18fr apologize for the previous answer, you are completely right :)
DevelDumperManager::debug() should not check for permission as was done in the previous drupal_debug() implementation. Added minimal test coverage for this

Committed and pushed to 8.x. Thanks!