#50261 [NEW]: Crash When Calling Parent Constructor with call_user_func()

From: tom at tomwardrop dot com Operating system: Windows 7 x64 PHP version: 5.3.1 PHP Bug Type: Reproducible crash Bug description: Crash When Calling Parent Constructor with call_user_func() Description: ------------ If class B, extends Class A, and class B calls Class A's constructor in its own contructor by using call_user_func("parent", "__construct"), and if class A's constructor is defined as the class name rather than "__construct", then PHP seems to crash (which results in Apache 2 crashing). Problem still exists with all extensions disabled. Reproduce code: --------------- <?php class testClass { function testClass () { echo 'Output string!'; } } class testClass2 extends testClass { function __construct () { call_user_func(array('parent', '__construct')); } } new testClass2; ?> Expected result: ---------------- The above code should echo out the string 'Output string!'. This code works correctly when "call_user_func" or "call_user_func_array" are not used. Actual result: -------------- call_user_func() and call_user_func_array(), cause PHP and as a result, Apache 2 to crash. When running PHP DBG debugger, the crash happens on the execution of call_user_func() line. The Windows event log notes that httpd.exe (apache) had crashed, blaming php5ts.dll for the fault. -- Edit bug report at http://bugs.php.net/?id=50261&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=50261&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=50261&r=trysnapshot53 Try a snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=50261&r=trysnapshot60 Fixed in SVN: http://bugs.php.net/fix.php?id=50261&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=50261&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=50261&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=50261&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=50261&r=needscript Try newer version: http://bugs.php.net/fix.php?id=50261&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=50261&r=support Expected behavior: http://bugs.php.net/fix.php?id=50261&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=50261&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=50261&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=50261&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=50261&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=50261&r=dst IIS Stability: http://bugs.php.net/fix.php?id=50261&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=50261&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=50261&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=50261&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=50261&r=mysqlcfg