From:
Operating system:
PHP version: 5.4.0alpha3
Package: Reproducible crash
Bug Type: Bug
Bug description:Segfault on implode/concat
Description:
------------
I found this issue running the Doctrine 2 testsuite with PHP 5.4.0 alpha 3
and could isolate the segfault behavior to a very simple php script.
I cant make anything out of the backtrace with regard to the nature of the
failing. But it seems to have something to do with the __toString() that
gets implicitly called.
Test script:
---------------
<?php
$options = array(
'pre' => '(',
'post' => ')',
'separator' => ' AND ',
);
class Foo
{
public function __toString()
{
return 'Foo';
}
}
function test($options, $queryPart)
{
return (isset($options['pre']) ? $options['pre'] : '')
. (is_array($queryPart) ? implode($options['separator'],
$queryPart) : $queryPart)
. (isset($options['post']) ? $options['post'] : '');
}
#echo test($options, "test"); // comment this in and the line after works
aswell
echo test($options, new Foo()); // this segfaults
Expected result:
----------------
(Foo)
Actual result:
--------------
Segfault, Backtrace is:
#0 gc_remove_zval_from_buffer (zv=0xb5f5b1b0) at
/home/benny/downloads/php-5.4.0alpha3/Zend/zend_gc.c:265
#1 0x083723c8 in _zval_ptr_dtor (zval_ptr=0x8913da8) at
/home/benny/downloads/php-5.4.0alpha3/Zend/zend_execute_API.c:437
#2 0x08374065 in zend_call_function (fci=0xbfffc8ac, fci_cache=0xbfffc8d0)
at /home/benny/downloads/php-5.4.0alpha3/Zend/zend_execute_API.c:1018
#3 0x0839660b in zend_call_method (object_pp=0xbfffc9a0, obj_ce=<value
optimized out>, fn_proxy=0xb5f76d38, function_name=0x8866e95 "__tostring",
function_name_len=10,
retval_ptr_ptr=0xbfffc97c, param_count=0, arg1=0x0, arg2=0x0) at
/home/benny/downloads/php-5.4.0alpha3/Zend/zend_interfaces.c:97
#4 0x083a0f11 in zend_std_cast_object_tostring (readobj=0xb5f5b1b0,
writeobj=0xbfffca48, type=6)
at
/home/benny/downloads/php-5.4.0alpha3/Zend/zend_object_handlers.c:1472
#5 0x0838152b in zend_make_printable_zval (expr=0xb5f5b1b0,
expr_copy=0xbfffca48, use_copy=0xbfffca68) at
/home/benny/downloads/php-5.4.0alpha3/Zend/zend.c:260
#6 0x0837c678 in concat_function (result=0xb5f5b1c0, op1=0xb5f5b170,
op2=0xb5f5b1b0) at
/home/benny/downloads/php-5.4.0alpha3/Zend/zend_operators.c:1243
#7 0x083d4d53 in ZEND_CONCAT_SPEC_TMP_TMP_HANDLER
(execute_data=0xb5f5b0f8) at
/home/benny/downloads/php-5.4.0alpha3/Zend/zend_vm_execute.h:8133
#8 0x083e52e6 in execute (op_array=0x8a5e7b0) at
/home/benny/downloads/php-5.4.0alpha3/Zend/zend_vm_execute.h:410
#9 0x08381d82 in zend_execute_scripts (type=8, retval=0x0, file_count=3)
at /home/benny/downloads/php-5.4.0alpha3/Zend/zend.c:1262
#10 0x083247a2 in php_execute_script (primary_file=0xbfffeebc) at
/home/benny/downloads/php-5.4.0alpha3/main/main.c:2385
#11 0x0842005e in do_cli (argc=2, argv=0xbffff144) at
/home/benny/downloads/php-5.4.0alpha3/sapi/cli/php_cli.c:983
#12 0x084208d7 in main (argc=2, argv=0xbffff144) at
/home/benny/downloads/php-5.4.0alpha3/sapi/cli/php_cli.c:1356
--
Edit bug report at https://bugs.php.net/bug.php?id=55578&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=55578&r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=55578&r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=55578&r=trysnapshottrunk
Fixed in SVN:
https://bugs.php.net/fix.php?id=55578&r=fixed
Fixed in SVN and need be documented:
https://bugs.php.net/fix.php?id=55578&r=needdocs
Fixed in release:
https://bugs.php.net/fix.php?id=55578&r=alreadyfixed
Need backtrace:
https://bugs.php.net/fix.php?id=55578&r=needtrace
Need Reproduce Script:
https://bugs.php.net/fix.php?id=55578&r=needscript
Try newer version:
https://bugs.php.net/fix.php?id=55578&r=oldversion
Not developer issue:
https://bugs.php.net/fix.php?id=55578&r=support
Expected behavior:
https://bugs.php.net/fix.php?id=55578&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=55578&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=55578&r=submittedtwice
register_globals:
https://bugs.php.net/fix.php?id=55578&r=globals
PHP 4 support discontinued:
https://bugs.php.net/fix.php?id=55578&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=55578&r=dst
IIS Stability:
https://bugs.php.net/fix.php?id=55578&r=isapi
Install GNU Sed:
https://bugs.php.net/fix.php?id=55578&r=gnused
Floating point limitations:
https://bugs.php.net/fix.php?id=55578&r=float
No Zend Extensions:
https://bugs.php.net/fix.php?id=55578&r=nozend
MySQL Configuration Error:
https://bugs.php.net/fix.php?id=55578&r=mysqlcfg
