From: laruence Operating system: PHP version: 5.4.6 Package: Scripting Engine problem Bug Type: Bug Bug description:Double free when use traits
Description: ------------ This bug is related to #61998, but was spotting when I fixing the bug #62358, PS: it really tough to refine this reproduce script :) Test script: --------------- <?php function __autoload($name) { if ($name == "B") { eval ("abstract class B extends A { }"); } else if ($name == "A") { eval ("abstract class A { use T { T::__construct as __asconstruct; }}"); } else if ($name == "T") { eval ("trait T { public function __construct() { } }"); } return TRUE; } class C extends B { public function __construct() { } } Expected result: ---------------- no error Actual result: -------------- [Thu Aug 23 23:34:22 2012] Script: '/home/huixinchen/bug_double_free.phpt' --------------------------------------- /home/huixinchen/opensource/trunk/Zend/zend_opcode.c(392) : Block 0x2b2c499c8820 status: Beginning: Cached Freed (invalid) Start: OK End: OK --------------------------------------- [Thu Aug 23 23:34:22 2012] Script: '/home/huixinchen/bug_double_free.phpt' Zend/zend_language_scanner.l(1903) : Freeing 0x2B2C499C4AA0 (12 bytes), script=/home/huixinchen/bug_double_free.phpt === Total 1 memory leaks detected === -- Edit bug report at https://bugs.php.net/bug.php?id=62907&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=62907&r=trysnapshot54 Try a snapshot (PHP 5.3): https://bugs.php.net/fix.php?id=62907&r=trysnapshot53 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=62907&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=62907&r=fixed Fixed in SVN and need be documented: https://bugs.php.net/fix.php?id=62907&r=needdocs Fixed in release: https://bugs.php.net/fix.php?id=62907&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=62907&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=62907&r=needscript Try newer version: https://bugs.php.net/fix.php?id=62907&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=62907&r=support Expected behavior: https://bugs.php.net/fix.php?id=62907&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=62907&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=62907&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=62907&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=62907&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=62907&r=dst IIS Stability: https://bugs.php.net/fix.php?id=62907&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=62907&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=62907&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=62907&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=62907&r=mysqlcfg