symfony/symfony — comment on commit 35a61b3a52f6b0bd9e25c8e7e44348f5b3c42b31
File: src/Symfony/Component/HttpKernel/Debug/ExceptionHandler.php line 19
By vicb:

Adding a new constant is not the most probable use case but may be checking input values ?

But that would not make more sense than releasing a buggy version, so please discard my comments.