Author: nat
Description:
Cannot obtain a diff page
To exhibit it:
Go to Wikipedia EN
Try to obtain the diff between:
Problem: it simply hangs the serving process (till timeout)
Note: the article ('page') contains a huge line. It seems to me that it somewhat
breaks the parser
Version: 1.9.x
Severity: normal
URL: http://en.wikipedia.org/w/index.php?title=Golden_ratio&diff=44320111&oldid=44319915
nat wrote:
(Note: the article is 'Golden ratio')
Trying to access to the URL associated to this bug seems not possible ('Read
Timeout' error) with Iceweasel (Firefox) 2.0.0.1 (Debian x86 package:
2.0.0.1+dfsg-2) and lynx (2.8.5-2sarge2.), either loged under a WP account or as
anon.
I get a 500 error, because on of the revisions in question does not appear to be available.
http://en.wikipedia.org/w/index.php?title=Golden_ratio&oldid=44320111
Perhaps this is due to bug 20757 ?
I get a 500 error, because on of the revisions in question does not appear to
be available.http://en.wikipedia.org/w/index.php?title=Golden_ratio&oldid=44320111
Perhaps this is due to bug 20757 ?
No. The revision text is available
http://en.wikipedia.org/w/index.php?title=Golden_ratio&oldid=44320111&action=edit
As Nat points out, that seems parser related.
You can view the diff with http://en.wikipedia.org/w/index.php?title=Golden_ratio&diff=44320111&oldid=44319915&diffonly=1
That line produces:
PHP Fatal error: Balloc() allocation exceeds list boundary in includes/parser/Parser.php on line 737
where the relevant lines are:
foreach ( $lines as $outLine ) {
$line = trim( $outLine );
if ( $line == '' ) { # empty line, go to next line
$out .= $outLine."\n";
continue;
}The error seems to be comparing a numeric string of 2000016 characters ($line) with the empty string with the == equal. It is fixed by doing a strict comparison (===). Then the error moves at a different point.