Bug #73762 [NEW]: recursive pattern breaks from pcre 8.3.36

From: zhihong dot chen dot cn at gmail dot com Operating system: Ubuntu 14.04.5 X64 PHP version: 7.0.14 Package: PCRE related Bug Type: Bug Bug description:recursive pattern breaks from pcre 8.3.36 Description: ------------ From php 5.6.9 after pcre upgrade to 8.37 and later. Recursive matching breaks. generate different result. when using php 5.6.8 and before version Will generate expect result. Later version will generate incorrect result. Test script: --------------- <?PHP const pattern = "#\{(?:(?<name>\w+))(?:/\}|\}(?<snippet>(?:[^{]*|(?!\{\w+:\})++|(?R))*+)\{end\})#mu"; $ss = <<<'EOD' {first} {second}within second{end} {end} EOD; function testRun($input ){ echo $input[0]; echo PHP_EOL; } preg_replace_callback( pattern ,'testRun',$ss); Expected result: ---------------- {first} {second}within second{end} {end} Actual result: -------------- {second}within second{end} -- Edit bug report at https://bugs.php.net/bug.php?id=73762&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=73762&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=73762&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=73762&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=73762&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=73762&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=73762&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=73762&r=needscript Try newer version: https://bugs.php.net/fix.php?id=73762&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=73762&r=support Expected behavior: https://bugs.php.net/fix.php?id=73762&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=73762&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=73762&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=73762&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=73762&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=73762&r=dst IIS Stability: https://bugs.php.net/fix.php?id=73762&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=73762&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=73762&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=73762&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=73762&r=mysqlcfg