Description:
------------
Uncaught exception causes segfault when extending the Exception class and $msg is an integer.

Reproduce code:
---------------
<?php
class test
{
function __construct()
{                                                          
throw new err(1);              
}                                   
}                                   
                                  
class err extends Exception         
{                                   
function __construct($msg)          
{
//parent::Exception(); // Fatal error: Call to undefined method exception::exception() in test.php                             
$this->message=$msg;                
}                                   
}                                   

$t=new test;
?>

Expected result:
----------------
Fatal error: Uncaught exception 'err' with message '1' in test.php:8 Stack trace: #0 test.php(): test->__construct() #1 {main} thrown in test.php


Actual result:
--------------
#0  0x28333164 in zif_reflection_extension_getName (ht=135174572, return_value=0x0, 
    this_ptr=0xbfbffa30, return_value_used=134639035)
    at /usr/local/php5/Zend/zend_reflection_api.c:2861
#1  0x8066deb in ap_clear_pool ()
#2  0x8066e6b in ap_destroy_pool ()
#3  0x8066dd7 in ap_clear_pool ()
#4  0x8066e6b in ap_destroy_pool ()
#5  0x8075c00 in clean_parent_exit ()
#6  0x807898f in standalone_main ()
#7  0x8078ee0 in main ()
#8  0x804ef62 in _start ()