https://bugzilla.wikimedia.org/show_bug.cgi?id=55818
Web browser: ---
Bug ID: 55818
Summary: enabling wgDebugFunctionEntry triggers infinite loop
Product: MediaWiki
Version: unspecified
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: Unprioritized
Component: General/Unknown
Assignee: wikibugs-l@lists.wikimedia.org
Reporter: ebernhard...@wikimedia.org
Classification: Unclassified
Mobile Platform: ---
Created attachment 13518
--> https://bugzilla.wikimedia.org/attachment.cgi?id=13518&action=edit
stack trace produced by the bug
When enabling profiling by providing a StartProfiler.php script along with
setting
$wgDebugFunctionEntry = true;
php hits its maximum nesting level. The error stacktrace is attached.
In short, wfProfileIn calls wfDebug. wfDebug calls wfRunHooks which(the impl
not the hooks) goes back to calling wfProfileIn by the 16th stack frame.
The bug can be reproduced for bisecting by creating StartProfiler.php and
executing
$ echo "\$wgDebugFunctionEntry = true;wfProfileIn('test');" | php
maintenance/eval.php
This finds af125df5199b5c232bf335d735cecc6d8f8e9784 as the change which caused
this bug. Tested on a new mediawiki/vagrant instance with no additional
extensions enabled.
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