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Bug #75570 "Narrowing occurred during type inference" error
Submitted: 2017-11-25 16:46 UTC Modified: 2017-11-28 05:14 UTC
From: nshutchinson at gmail dot com Assigned: laruence (profile)
Status: Closed Package: opcache
PHP Version: 7.1.12 OS: CentOS 7.4
Private report: No CVE-ID: None
 [2017-11-25 16:46 UTC] nshutchinson at gmail dot com
Since upgrading to Php 7.1.12 from 7.1.10, I'm seeing sporadic errors in an instance of PHP-based web application called Phabricator <>.

> Error while loading file "/srv/phabricator/phabricator/src/infrastructure/diff/view/PHUIDiffGraphView.php": Narrowing occurred during type inference. Please file a bug report on

The file in question is here:

I have no knowledge of the PHP internals but grepping the PHP codebase appeared to indicate that the error message is generated by the opcache component.

I note that the changelog for PHP 7.1.9 listed a fix for this error.


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 [2017-11-28 05:14 UTC]
-Status: Open +Status: Closed -Assigned To: +Assigned To: laruence
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Last updated: Sun Nov 19 01:31:42 2017 UTC