Magento fails with xdebug 3 due to mftf

[kandy]

Preconditions

1. Install xdebug 3 (RC1+) and enable it

Steps to reproduce

1. Run bin/magento

Expected result

1. List of available command is printed

Actual result

PHP Fatal error:  Uncaught Error: Call to undefined function xdebug_disable() in /magento/vendor/magento/magento2-functional-testing-framework/src/Magento/FunctionalTestingFramework/_bootstrap.php:81
Stack trace:
#0 /magento/vendor/composer/autoload_real.php(73): require()
#1 /magento/vendor/composer/autoload_real.php(63): composerRequire4012c480a3949eb57e5b1ec1b7b5c42b('eda65932675b68b...', '/magento/vendor...')
#2 /magento/vendor/autoload.php(7): ComposerAutoloaderInit4012c480a3949eb57e5b1ec1b7b5c42b::getLoader()
#3 /magento/app/autoload.php(51): include('/magento/vendor...')
#4 /magento/app/bootstrap.php(33): require_once('/magento/app/au...')
#5 /magento/bin/magento(14): require('/magento/app/bo...')
#6 {main}
  thrown in /magento/vendor/magento/magento2-functional-testing-framework/src/Magento/FunctionalTestingFramework/_bootstrap.php on line 81

see for details https://3.xdebug.org/docs/upgrade_guide

[m2-assistant]

Hi @kandy. Thank you for your report.
To help us process this issue please make sure that you provided sufficient information.

Please, add a comment to assign the issue: @magento I am working on this

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[jilu1]

@kandy Thank you for your report!
https://jira.corp.magento.com/browse/MQE-2391 has been created. Please check comments in MQE-2391 and let us know if this needs immediate attention.

[convenient]

A bunch of our test suites started failing in travis because of this error.

I think travis has likely started bundling xdebug 3 or something like that.

before_install:
  - phpenv config-rm xdebug.ini || true

I have slipped this into our .travis.yml and the suites are running again.

[jilu1]

@convenient It's good to know you have a solution!
If your problem is the same as this xdebug_disable() in _bootstrap.php, it's been fixed and available in develop branch. No planned release date yet.

[densen45]

@tuyennn I think these are the two commits you asked for:

e95fb10
6d6a7c5

Please, correct me, if I'm wrong.

[tuyennn]

@densen45 @jilu1 hopefully the release could start soon

[khanhnhat1660407]

https://xdebug.org/docs/upgrade_guide

[Ddcdom]

xdebug_disable is only called if both MFTF debugging is disabled and the Xdebug module is loaded.
Its possible to enable MFTF debugging by adding/editing the file dev/tests/acceptance/.env and adding the line MFTF_DEBUG = 1
I've done this in my dev environment, but as I don't understand the consequences of enabling MFTF debugging I have not enabled it in my production environment. However, as I don't have Xdebug installed in my production environment, this is not an issue.

[larsroettig]

@jilu1 @kandy Pls Realse ASAP most Partners use Integration,Static, Mftf Tests on CI-System and Local all our tests are RED beausce of this issue. Build Patch for us and need to apply them now to all our customers