Error handler crashes with Undefined constant "DRUPAL_TEST_IN_CHILD_SITE"

Linking issue that introduced the fault.

Can't reproduce this, with or without a database. I just get

Warning: file_get_contents(/dev/invalid): Failed to open stream: No such file or directory in require() (line 785 of sites/default/settings.php).

require() (Line: 150)
Drupal\Core\Site\Settings::initialize() (Line: 341)
install_begin_request() (Line: 118)
install_drupal() (Line: 53)

at the top of the page - note the path is sanitized correctly - and then the page continues to load showing either the installer or the "already installed" message.

Looks like this also needs error_reporting(0); to be set first.

Reproduced with

error_reporting(0);
file_get_contents('/dev/invalid');

ie. it only works if error reporting is off.

MR!9743 hardens this, the fix is trivial and I don't believe worth testing.

The code change is minuscule and I don't see any possible downsides to it.

Yes all looks fine.

Committed/pushed to 11.x and cherry-picked back through to 10.2.x, thanks!

catch → closed merge request !9743

Same error for me with drupal 10.3.6 and PHP 8.3
With Drupal 9 no error.

Hi,
it's something with Varnish and Drupal 10.3

@trickfun this fix will be in 10.3.7, it's not in 10.3.6

Automatically closed - issue fixed for 2 weeks with no activity.