Description:
------------
PHP crashes when using any bcompiled class.

Reproduce code:
---------------
Main file:

<?php
require('tcc.php');

$a = new A();
$a = new B();
?>

tcc.php:
compiled version of:
<?php

    class A {
        function __construct() {
            echo "A::ctor\n";
        }
    }

    class B extends A {
        function __construct() {
            echo "B::ctor\n";
        }
    }
?>


Expected result:
----------------
A working program ("A::ctor" and "B::ctor" on console)

Actual result:
--------------
Signal 11 when PHP executable tries to exit. It processes the script, writes ctor messages, and crashes.


$ gdb /usr/local/bin/php php.core
GNU gdb 6.1.1 [FreeBSD]
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-marcel-freebsd"...
Core was generated by `php'.
Program terminated with signal 11, Segmentation fault.

...

#0  _efree (ptr=0x0, __zend_filename=0x81fd224 "/usr/ports/lang/php5/work/php-5.1.6/Zend/zend_hash.c", __zend_lineno=528, 
    __zend_orig_filename=0x0, __zend_orig_lineno=0) at /usr/ports/lang/php5/work/php-5.1.6/Zend/zend_alloc.c:300
300		CALCULATE_REAL_SIZE_AND_CACHE_INDEX(p->size);
(gdb) bt
#0  _efree (ptr=0x0, __zend_filename=0x81fd224 "/usr/ports/lang/php5/work/php-5.1.6/Zend/zend_hash.c", __zend_lineno=528, 
    __zend_orig_filename=0x0, __zend_orig_lineno=0) at /usr/ports/lang/php5/work/php-5.1.6/Zend/zend_alloc.c:300
#1  0x0814c94d in zend_hash_destroy (ht=0x859eac4) at /usr/ports/lang/php5/work/php-5.1.6/Zend/zend_hash.c:528
#2  0x0813a8ee in destroy_zend_class (pce=0x859eac4) at /usr/ports/lang/php5/work/php-5.1.6/Zend/zend_opcode.c:180
#3  0x0814cbb8 in zend_hash_apply_deleter (ht=0x825f140, p=0x859b100) at /usr/ports/lang/php5/work/php-5.1.6/Zend/zend_hash.c:576
#4  0x0814cee3 in zend_hash_reverse_apply (ht=0x825f140, apply_func=0x8136774 <clean_non_persistent_class>)
    at /usr/ports/lang/php5/work/php-5.1.6/Zend/zend_hash.c:737
#5  0x08136ecd in shutdown_executor () at /usr/ports/lang/php5/work/php-5.1.6/Zend/zend_execute_API.c:273
#6  0x0814349d in zend_deactivate () at /usr/ports/lang/php5/work/php-5.1.6/Zend/zend.c:854
#7  0x08108f69 in php_request_shutdown (dummy=0x0) at /usr/ports/lang/php5/work/php-5.1.6/main/main.c:1292
#8  0x081ca43f in main (argc=2, argv=0xbfbfead4) at /usr/ports/lang/php5/work/php-5.1.6/sapi/cli/php_cli.c:1246