Steps to reproduce:

[1] Create an empty yml configuration file for a module.

For example:

/core/modules/history/history.links.menu.yml

[2] Flush all caches.

[3] Enjoy the warnings:

Warning: Invalid argument supplied for foreach() in Drupal\Core\Plugin\Discovery\YamlDiscovery->getDefinitions() (line 88 of D:\d8\core\lib\Drupal\Core\Plugin\Discovery\YamlDiscovery.php).
Severity Warning

Warning: Invalid argument supplied for foreach() in Drupal\Core\Routing\RouteBuilder->rebuild() (line 166 of D:\d8\core\lib\Drupal\Core\Routing\RouteBuilder.php).

Comments

david_garcia created an issue. See original summary.

cilefen’s picture

cilefen commented

Are you sure this happens with any yml file a module can implement?

dawehner’s picture

dawehner
Primary language German
commented

So in that case we could either silently ignore it, or just throw something, which tells people that this doesn't make sense. I kinda prefer the more strict one.

cilefen’s picture

cilefen commented

I cannot reproduce this with the steps in the summary.

Version: 8.1.x-dev » 8.2.x-dev

Drupal 8.1.0-beta1 was released on March 2, 2016, which means new developments and disruptive changes should now be targeted against the 8.2.x-dev branch. For more information see the Drupal 8 minor version schedule and the Allowed changes during the Drupal 8 release cycle.

Version: 8.2.x-dev » 8.3.x-dev

Drupal 8.2.0-beta1 was released on August 3, 2016, which means new developments and disruptive changes should now be targeted against the 8.3.x-dev branch. For more information see the Drupal 8 minor version schedule and the Allowed changes during the Drupal 8 release cycle.

Version: 8.3.x-dev » 8.4.x-dev

Drupal 8.3.0-alpha1 will be released the week of January 30, 2017, which means new developments and disruptive changes should now be targeted against the 8.4.x-dev branch. For more information see the Drupal 8 minor version schedule and the Allowed changes during the Drupal 8 release cycle.

Version: 8.4.x-dev » 8.5.x-dev

Drupal 8.4.0-alpha1 will be released the week of July 31, 2017, which means new developments and disruptive changes should now be targeted against the 8.5.x-dev branch. For more information see the Drupal 8 minor version schedule and the Allowed changes during the Drupal 8 release cycle.

Version: 8.5.x-dev » 8.6.x-dev

Drupal 8.5.0-alpha1 will be released the week of January 17, 2018, which means new developments and disruptive changes should now be targeted against the 8.6.x-dev branch. For more information see the Drupal 8 minor version schedule and the Allowed changes during the Drupal 8 release cycle.

Version: 8.6.x-dev » 8.7.x-dev

Drupal 8.6.0-alpha1 will be released the week of July 16, 2018, which means new developments and disruptive changes should now be targeted against the 8.7.x-dev branch. For more information see the Drupal 8 minor version schedule and the Allowed changes during the Drupal 8 release cycle.

Version: 8.7.x-dev » 8.8.x-dev

Drupal 8.7.0-alpha1 will be released the week of March 11, 2019, which means new developments and disruptive changes should now be targeted against the 8.8.x-dev branch. For more information see the Drupal 8 minor version schedule and the Allowed changes during the Drupal 8 release cycle.

Version: 8.8.x-dev » 8.9.x-dev

Drupal 8.8.0-alpha1 will be released the week of October 14th, 2019, which means new developments and disruptive changes should now be targeted against the 8.9.x-dev branch. (Any changes to 8.9.x will also be committed to 9.0.x in preparation for Drupal 9’s release, but some changes like significant feature additions will be deferred to 9.1.x.). For more information see the Drupal 8 and 9 minor version schedule and the Allowed changes during the Drupal 8 and 9 release cycles.

Version: 8.9.x-dev » 9.1.x-dev

Drupal 8.9.0-beta1 was released on March 20, 2020. 8.9.x is the final, long-term support (LTS) minor release of Drupal 8, which means new developments and disruptive changes should now be targeted against the 9.1.x-dev branch. For more information see the Drupal 8 and 9 minor version schedule and the Allowed changes during the Drupal 8 and 9 release cycles.

quietone’s picture

quietone commented
Status: Active » Closed (cannot reproduce)
Issue tags: +Bug Smash Initiative

Like cilefen, I also was unable to reproduce the issue. I followed the following steps

  • Install 8.6.19-x
  • Enable history
  • touch /core/modules/history/history.links.menu.yml
  • drush cr
  • Checked the log and no warnings or errors logged.

Since neither I nor cilefen could not reproduce this issue and since there weren't other steps to reproduce the issue provided since the issue was open in Dec 2015, I'm marking the issue "Closed (cannot reproduce)". If anyone can provide complete steps to reproduce the issue (starting from "Install Drupal core"), document those steps in the issue summary and set the issue status back to "Active" [or NW if it has a patch, etc.].

Thanks!