# segfault with class type hints and refs.

- Thread: https://externals.io/message/3579
- Original archive: https://news-web.php.net/php.internals/3579
- Started by Tom Fishwick on 2003-07-23T17:05:29+00:00
- Messages: 2
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## #3579 — Tom Fishwick — 2003-07-23T17:05:29+00:00

URL: https://externals.io/message/3579#3579

Hi,  I was trying out the class type hints feature, and

<?
class P { }

function func(P $p) { }

$p = new P;

func(&$p);
?>

that causes a segfault. Doing function func(P &$p), also causes a
segfault.  I'm using todays snapshot. Here's a bt.

Program received signal SIGSEGV, Segmentation fault.
0x0814d26f in zend_assign_to_variable_reference (result=0x401d9c00,
variable_ptr_ptr=0x401d87d8, value_ptr_ptr=0x401cf95c, 
    Ts=0x0) at /usr/src/php5-200307231530/Zend/zend_execute.c:238
238                     T(result->u.var).var.ptr_ptr = variable_ptr_ptr;
(gdb) bt
#0  0x0814d26f in zend_assign_to_variable_reference (result=0x401d9c00,
variable_ptr_ptr=0x401d87d8, value_ptr_ptr=0x401cf95c, 
    Ts=0x0) at /usr/src/php5-200307231530/Zend/zend_execute.c:238
#1  0x081522a7 in zend_recv_handler (execute_data=0xbfffce10,
op_array=0x81fe978)
    at /usr/src/php5-200307231530/Zend/zend_execute.c:110
#2  0x0814e793 in execute (op_array=0x81fe978) at
/usr/src/php5-200307231530/Zend/zend_execute.c:1192
#3  0x0815156e in zend_do_fcall_common_helper (execute_data=0xbfffcfd0,
op_array=0x401d8134)
    at /usr/src/php5-200307231530/Zend/zend_execute.c:2541
#4  0x0814e793 in execute (op_array=0x401d8134) at
/usr/src/php5-200307231530/Zend/zend_execute.c:1192
#5  0x0813af9b in zend_execute_scripts (type=8, retval=0x0,
file_count=3) at /usr/src/php5-200307231530/Zend/zend.c:1017
#6  0x08113b1f in php_execute_script (primary_file=0xbffff380) at
/usr/src/php5-200307231530/main/main.c:1568
#7  0x08156fbb in main (argc=2, argv=0xbffff404) at
/usr/src/php5-200307231530/sapi/cli/php_cli.c:910
#8  0x420156a4 in __libc_start_main () from /lib/tls/libc.so.6

I hope that helps.

Tom

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## #3580 — Moriyoshi Koizumi — 2003-07-23T17:10:02+00:00

URL: https://externals.io/message/3579#3580 · In reply to: #3579

The problem you found seems identical to the bug #24658.
http://bugs.php.net/bug.php?id=24658

Anyway, thanks for the report.

Moriyoshi

"Tom Fishwick" <tom@zworg.com> wrote:

> Hi,  I was trying out the class type hints feature, and
> 
> <?
> class P { }
> 
> function func(P $p) { }
> 
> $p = new P;
> 
> func(&$p);
> ?>
> 
> that causes a segfault. Doing function func(P &$p), also causes a
> segfault.  I'm using todays snapshot. Here's a bt.