# Segfault in HEAD

- Thread: https://externals.io/message/8192
- Original archive: https://news-web.php.net/php.internals/8192
- Started by Stefan Walk on 2004-02-26T22:41:55+00:00
- Messages: 3
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## #8192 — Stefan Walk — 2004-02-26T22:41:55+00:00

URL: https://externals.io/message/8192#8192

Hi, after a cvs update i get a segfault with this script:
<?php
class test
{
  function __destruct() {
        $this->foo = false;
  }
  public function start() {
    throw new Exception();
  }
}

  $test = new test();
  $test->start();

?>

Backtrace:
#0  0x00000000 in ?? ()
#1  0x081656a2 in execute (op_array=0x40206284) at /home/et/cvs.php.net/php-src/Zend/zend_execute.c:1339
#2  0x0814790e in zend_call_function (fci=0xbfffd400, fci_cache=0xbfffd3e0)
    at /home/et/cvs.php.net/php-src/Zend/zend_execute_API.c:759
#3  0x0815924c in zend_call_method (object_pp=0xbfffd48c, obj_ce=0x40204c84, fn_proxy=0x0,
    function_name=0x819f540 "__destruct", function_name_len=10, retval_ptr_ptr=0x0, param_count=1075859404, arg1=0x0,
    arg2=0x0) at /home/et/cvs.php.net/php-src/Zend/zend_interfaces.c:79
#4  0x0815af9a in zend_objects_destroy_object (object=0x402051ac, handle=1075859404)
    at /home/et/cvs.php.net/php-src/Zend/zend_objects.c:71
#5  0x0815c8c0 in zend_objects_store_call_destructors (objects=0x81c06d0)
    at /home/et/cvs.php.net/php-src/Zend/zend_objects_API.c:52
#6  0x08146e92 in shutdown_executor () at /home/et/cvs.php.net/php-src/Zend/zend_execute_API.c:209
#7  0x0814e54b in zend_deactivate () at /home/et/cvs.php.net/php-src/Zend/zend.c:802
#8  0x08124091 in php_request_shutdown (dummy=0x0) at /home/et/cvs.php.net/php-src/main/main.c:1243
#9  0x0816ded8 in main (argc=4, argv=0xbfffe1e4) at /home/et/cvs.php.net/php-src/sapi/cli/php_cli.c:1044
#10 0x420158f7 in __libc_start_main () from /lib/i686/libc.so.6


-- 
Regards,
Stefan Walk
<swalk@prp.physik.tu-darmstadt.de

---

## #8251 — Timm Friebe — 2004-02-28T17:52:37+00:00

URL: https://externals.io/message/8192#8251 · In reply to: #8192

> Hi, after a cvs update i get a segfault with this script:
[...]

This sourcecode (which is the same except that there is no code in the
destructor) prints out:

Fatal error: Exception thrown without a stack frame in Unknown on line 0

-- snip --
<?php
  class test {
    function __destruct() {
    }
    public function start() {
      throw new Exception();
    }
  }

  $test = new test();
  $test->start();
?>
-- snip --

>From zend_exceptions.c:

if (!EG(current_execute_data)) {
    zend_error(E_ERROR, "Exception thrown without a stack frame");
}

This might help tracking down the problem.

/ Timm

---

## #8268 — Andi Gutmans — 2004-03-01T13:37:44+00:00

URL: https://externals.io/message/8192#8268 · In reply to: #8192

This should be fixed now. Thanks for the short reproducing script.

Andi

At 11:41 PM 2/26/2004 +0100, Stefan Walk wrote:
>Hi, after a cvs update i get a segfault with this script:
><?php
>class test
>{
>   function __destruct() {
>         $this->foo = false;
>   }
>   public function start() {
>     throw new Exception();
>   }
>}
>
>   $test = new test();
>   $test->start();
>
>?>
>
>Backtrace:
>#0  0x00000000 in ?? ()
>#1  0x081656a2 in execute (op_array=0x40206284) at 
>/home/et/cvs.php.net/php-src/Zend/zend_execute.c:1339
>#2  0x0814790e in zend_call_function (fci=0xbfffd400, fci_cache=0xbfffd3e0)
>     at /home/et/cvs.php.net/php-src/Zend/zend_execute_API.c:759
>#3  0x0815924c in zend_call_method (object_pp=0xbfffd48c, 
>obj_ce=0x40204c84, fn_proxy=0x0,
>     function_name=0x819f540 "__destruct", function_name_len=10, 
> retval_ptr_ptr=0x0, param_count=1075859404, arg1=0x0,
>     arg2=0x0) at /home/et/cvs.php.net/php-src/Zend/zend_interfaces.c:79
>#4  0x0815af9a in zend_objects_destroy_object (object=0x402051ac, 
>handle=1075859404)
>     at /home/et/cvs.php.net/php-src/Zend/zend_objects.c:71
>#5  0x0815c8c0 in zend_objects_store_call_destructors (objects=0x81c06d0)
>     at /home/et/cvs.php.net/php-src/Zend/zend_objects_API.c:52
>#6  0x08146e92 in shutdown_executor () at 
>/home/et/cvs.php.net/php-src/Zend/zend_execute_API.c:209
>#7  0x0814e54b in zend_deactivate () at 
>/home/et/cvs.php.net/php-src/Zend/zend.c:802
>#8  0x08124091 in php_request_shutdown (dummy=0x0) at 
>/home/et/cvs.php.net/php-src/main/main.c:1243
>#9  0x0816ded8 in main (argc=4, argv=0xbfffe1e4) at 
>/home/et/cvs.php.net/php-src/sapi/cli/php_cli.c:1044
>#10 0x420158f7 in __libc_start_main () from /lib/i686/libc.so.6
>
>
>--
>Regards,
>Stefan Walk
><swalk@prp.physik.tu-darmstadt.de