PHP Warning: preg_match(): Compilation failed: two named subpatterns have the same name at offset 62
Closed, DuplicatePublicPRODUCTION ERROR
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Assigned To

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Authored By

	brennen
	Jan 15 2020, 2:52 PM

Description

Error

MediaWiki version: 1.35.0-wmf.15

message

PHP Warning: preg_match(): Compilation failed: two named subpatterns have the same name at offset 62

Impact

Generates logspam when loading https://meta.wikimedia.org/wiki/Wikimedia_Taiwan/wiki/index.php5/$1 - this is obviously malformed, but also probably shouldn't result in an error.

Notes

1 instance of this since deploy of wmf.15 to group 1.

Details

Request ID: Xh8e9QpAAEAAAJzYY8IAAAEW
Request URL: https://meta.wikimedia.org/wiki/Wikimedia_Taiwan/wiki/index.php5/$1

Stack Trace

exception.trace

#0 [internal function]: MWExceptionHandler::handleError(integer, string, string, integer, array)
#1 /srv/mediawiki/php-1.35.0-wmf.15/includes/PathRouter.php(311): preg_match(string, string, NULL)
#2 /srv/mediawiki/php-1.35.0-wmf.15/includes/PathRouter.php(285): PathRouter::extractTitle(string, stdClass)
#3 /srv/mediawiki/php-1.35.0-wmf.15/includes/PathRouter.php(260): PathRouter->internalParse(string)
#4 /srv/mediawiki/php-1.35.0-wmf.15/includes/WebRequest.php(209): PathRouter->parse(string)
#5 /srv/mediawiki/php-1.35.0-wmf.15/includes/WebRequest.php(365): WebRequest::getPathInfo(string)
#6 /srv/mediawiki/php-1.35.0-wmf.15/includes/Setup.php(765): WebRequest->interpolateTitle()
#7 /srv/mediawiki/php-1.35.0-wmf.15/includes/WebStart.php(81): require_once(string)
#8 /srv/mediawiki/php-1.35.0-wmf.15/index.php(43): require(string)
#9 /srv/mediawiki/w/index.php(3): require(string)
#10 {main}

Related Changes in Gerrit:

	Subject	Repo	Branch	Lines +/-
	PathRouter: Allow duplicate names for subpatterns in RegEx	mediawiki/core	master	+1 -1

Customize query in gerrit

Event Timeline

brennen created this task.Jan 15 2020, 2:52 PM

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptJan 15 2020, 2:52 PM

brennen added a project: User-brennen.Jan 15 2020, 2:53 PM

brennen moved this task from Backlog to Logs/Train on the User-brennen board.

Aklapper added a project: MediaWiki-General.Jan 15 2020, 4:29 PM

Change 565762 had a related patch set uploaded (by D3r1ck01; owner: Derick N. Alangi):
[mediawiki/core@master] PathRouter: Allow duplicate names for subpatterns in RegEx

https://gerrit.wikimedia.org/r/565762

gerritbot added a project: Patch-For-Review.Jan 19 2020, 1:54 PM

@brennen, I think this can be fixed by using the (?J) pattern modifier to support duplicate names for sub-patterns. I've dropped a patch, can you have a look?

xSavitar closed this task as a duplicate of T235357: PHP Warning: preg_match(): Compilation failed: two named subpatterns have the same name at offset 62.Jan 19 2020, 4:50 PM

Change 565762 abandoned by D3r1ck01:

[mediawiki/core@master] PathRouter: Allow duplicate names for subpatterns in RegEx

Reason: