[pcre-dev] [Bug 2168] New: preg_match bug

https://bugs.exim.org/show_bug.cgi?id=2168

            Bug ID: 2168
           Summary: preg_match bug
           Product: PCRE
           Version: N/A
          Hardware: x86
                OS: All
            Status: NEW
          Severity: security
          Priority: medium
         Component: Code
          Assignee: ph10@???
          Reporter: qflb.wu@???
                CC: pcre-dev@???

php 7.1.9

php test.php

*** Error in `php': double free or corruption (!prev): 0x0000000002b0dec0 ***
Aborted

Test script:
---------------
<?php
preg_match("/Å¡(?:F?+(?:^(?(R)a+\"){99}-))(?J)(?'R'(?'R'<((?'RR'(?'R'\){97)?J)?J)(?'R'(?'R'\){99|(:(?|(?'R')(\k'R')|((?'R')))H'R'R)(H'R))))))/","$a*b\dc");
?>



========
https://bugs.php.net/bug.php?id=75207

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