PCRE jit bug with UTF-8 and lookbehind assertion

From: Date: Wed, 17 Feb 2016 13:06:41 +0000
Subject: PCRE jit bug with UTF-8 and lookbehind assertion
Groups: php.internals 
Request: Send a blank email to internals+get-91243@lists.php.net to get a copy of this message
Hi there, we just ran into a version of the bug "JIT bug with lookbehind assertion": https://bugs.exim.org/show_bug.cgi?id=1189 To reproduce it you can use php -n -r 'ini_set("pcre.jit", 0); echo preg_replace("/\b(11|21|41)\b/u", "z", "x°11\n");' vs. php -n -r 'ini_set("pcre.jit", 1); echo preg_replace("/\b(11|21|41)\b/u", "z", "x°11\n");' Since the PCRE bug report dates from 2011-12-27 and is still marked NEW I wonder if it would be safer for PHP to disable pcre.jit in the recommended php.ini configuration files. Also: Does anyone know who might be able/willing to look at the upstream bug? Regards, - Chris

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