Edit report at https://bugs.php.net/bug.php?id=65784&edit=1
ID: 65784
User updated by: r dot wilczek at web-appz dot de
Reported by: r dot wilczek at web-appz dot de
Summary: Segfault with finally
Status: Open
Type: Bug
Package: *General Issues
Operating System: Linux
PHP Version: 5.5.4
Block user comment: N
Private report: N
New Comment:
(The second core-dump is created without xdebug, to keep things simple)
Previous Comments:
------------------------------------------------------------------------
[2013-09-29 12:25:34] r dot wilczek at web-appz dot de
#0 0x0000000000a41895 in zval_delref_p (pz=0x0) at
/root/php-5.5.4/php-5.5.4/Zend/zend.h:409
#1 0x0000000000a4330c in zend_pzval_unlock_func (z=0x0,
should_free=0x7fffa8aa9e90, unref=1) at
/root/php-5.5.4/php-5.5.4/Zend/zend_execute.c:72
#2 0x0000000000a4341b in _get_zval_ptr_var (var=4294967232,
execute_data=0x7f1fceaa5098, should_free=0x7fffa8aa9e90) at
/root/php-5.5.4/php-5.5.4/Zend/zend_execute.c:186
#3 0x0000000000a63e15 in ZEND_SEND_VAR_NO_REF_SPEC_VAR_HANDLER
(execute_data=0x7f1fceaa5098) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:13081
#4 0x0000000000a480cf in execute_ex (execute_data=0x7f1fceaa5098) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:363
#5 0x0000000000a48157 in zend_execute (op_array=0x2e129f0) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:388
#6 0x00000000009f6785 in zend_call_function (fci=0x7fffa8aaa100,
fci_cache=0x7fffa8aaa0d0) at
/root/php-5.5.4/php-5.5.4/Zend/zend_execute_API.c:939
#7 0x000000000076285c in zim_reflection_method_invokeArgs (ht=2,
return_value=0x2e3b2d0, return_value_ptr=0x0, this_ptr=0x2e3b450,
return_value_used=1)
at /root/php-5.5.4/php-5.5.4/ext/reflection/php_reflection.c:3018
#8 0x0000000000a489de in zend_do_fcall_common_helper_SPEC
(execute_data=0x7f1fceaa49e8) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:550
#9 0x0000000000a491b0 in ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER
(execute_data=0x7f1fceaa49e8) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:685
#10 0x0000000000a480cf in execute_ex (execute_data=0x7f1fceaa49e8) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:363
#11 0x0000000000a48157 in zend_execute (op_array=0x7f1fcead9b60) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:388
#12 0x0000000000a0a27f in zend_execute_scripts (type=8, retval=0x0,
file_count=3) at /root/php-5.5.4/php-5.5.4/Zend/zend.c:1318
#13 0x0000000000976e9e in php_execute_script (primary_file=0x7fffa8aad7a0) at
/root/php-5.5.4/php-5.5.4/main/main.c:2489
#14 0x0000000000ab7ac7 in do_cli (argc=5, argv=0x263beb0) at
/root/php-5.5.4/php-5.5.4/sapi/cli/php_cli.c:994
#15 0x0000000000ab8bff in main (argc=5, argv=0x263beb0) at
/root/php-5.5.4/php-5.5.4/sapi/cli/php_cli.c:1378
------------------------------------------------------------------------
[2013-09-29 12:18:45] r dot wilczek at web-appz dot de
Description:
------------
The structures
try {
return foo();
} finally {
bar();
}
or
try {
return foo();
} catch (Exception $e) {
throw $e;
} finally {
bar();
}
under some circumstances segfault, whereas the equivalent structure
try {
$result = foo();
bar();
return $result;
} catch (Exception $e) {
bar();
throw $e;
}
works as expected.
Test script:
---------------
It's hard to reproduce the failure, because it occured within a "PHPUnit Mock
Monster", and I failed to reproduce it with a simple script.
All I can show is the core-dump below, which is produced by a
try {
return foo();
} finally {
bar();
}
Expected result:
----------------
No Segmentation fault
Actual result:
--------------
Segmentation fault
#0 0x0000000000a41895 in zval_delref_p (pz=0x0) at
/root/php-5.5.4/php-5.5.4/Zend/zend.h:409
#1 0x0000000000a4330c in zend_pzval_unlock_func (z=0x0,
should_free=0x7fff17175fe0, unref=1)
at /root/php-5.5.4/php-5.5.4/Zend/zend_execute.c:72
#2 0x0000000000a4341b in _get_zval_ptr_var (var=4294967232,
execute_data=0x7fea01fe0098, should_free=0x7fff17175fe0)
at /root/php-5.5.4/php-5.5.4/Zend/zend_execute.c:186
#3 0x0000000000a63e15 in ZEND_SEND_VAR_NO_REF_SPEC_VAR_HANDLER
(execute_data=0x7fea01fe0098)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:13081
#4 0x0000000000a4a772 in ZEND_USER_OPCODE_SPEC_HANDLER
(execute_data=0x7fea01fe0098)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:1119
#5 0x0000000000a480cf in execute_ex (execute_data=0x7fea01fe0098) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:363
#6 0x00007fe9fbfd2c57 in xdebug_execute_ex (execute_data=0x7fea01fe0098) at
/tmp/pear/temp/xdebug/xdebug.c:1437
#7 0x0000000000a48157 in zend_execute (op_array=0x1e07960) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:388
#8 0x0000000000a48bfc in zend_do_fcall_common_helper_SPEC
(execute_data=0x7fea01fdff10)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:584
#9 0x0000000000a491b0 in ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER
(execute_data=0x7fea01fdff10)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:685
#10 0x0000000000a480cf in execute_ex (execute_data=0x7fea01fdff10) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:363
#11 0x00007fe9fbfd2c57 in xdebug_execute_ex (execute_data=0x7fea01fdff10) at
/tmp/pear/temp/xdebug/xdebug.c:1437
#12 0x0000000000a48157 in zend_execute (op_array=0x1e2e1e0) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:388
#13 0x0000000000a48bfc in zend_do_fcall_common_helper_SPEC
(execute_data=0x7fea01fdfc38)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:584
#14 0x0000000000a491b0 in ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER
(execute_data=0x7fea01fdfc38)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:685
#15 0x0000000000a480cf in execute_ex (execute_data=0x7fea01fdfc38) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:363
#16 0x00007fe9fbfd2c57 in xdebug_execute_ex (execute_data=0x7fea01fdfc38) at
/tmp/pear/temp/xdebug/xdebug.c:1437
#17 0x0000000000a48157 in zend_execute (op_array=0x7fe9fb75d630) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:388
#18 0x00000000009f6785 in zend_call_function (fci=0x7fff171766d0,
fci_cache=0x7fff171766a0)
at /root/php-5.5.4/php-5.5.4/Zend/zend_execute_API.c:939
#19 0x000000000076285c in zim_reflection_method_invokeArgs (ht=2,
return_value=0x7fe9fb705d90, return_value_ptr=0x0,
this_ptr=0x7fe9fb7048b0, return_value_used=1) at
/root/php-5.5.4/php-5.5.4/ext/reflection/php_reflection.c:3018
#20 0x0000000000a47936 in execute_internal (execute_data_ptr=0x7fea01fdf9e8,
fci=0x0, return_value_used=1)
at /root/php-5.5.4/php-5.5.4/Zend/zend_execute.c:1485
#21 0x00007fe9fbfd3118 in xdebug_execute_internal
(current_execute_data=0x7fea01fdf9e8, fci=0x0, return_value_used=1)
at /tmp/pear/temp/xdebug/xdebug.c:1553
#22 0x0000000000a48a0e in zend_do_fcall_common_helper_SPEC
(execute_data=0x7fea01fdf9e8)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:552
#23 0x0000000000a491b0 in ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER
(execute_data=0x7fea01fdf9e8)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:685
---Type <return> to continue, or q <return> to quit---
#24 0x0000000000a480cf in execute_ex (execute_data=0x7fea01fdf9e8) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:363
#25 0x00007fe9fbfd2c57 in xdebug_execute_ex (execute_data=0x7fea01fdf9e8) at
/tmp/pear/temp/xdebug/xdebug.c:1437
#26 0x0000000000a48157 in zend_execute (op_array=0x7fe9fb6ded80) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:388
#27 0x0000000000a48bfc in zend_do_fcall_common_helper_SPEC
(execute_data=0x7fea01fdef70)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:584
#28 0x0000000000a491b0 in ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER
(execute_data=0x7fea01fdef70)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:685
#29 0x0000000000a480cf in execute_ex (execute_data=0x7fea01fdef70) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:363
#30 0x00007fe9fbfd2c57 in xdebug_execute_ex (execute_data=0x7fea01fdef70) at
/tmp/pear/temp/xdebug/xdebug.c:1437
#31 0x0000000000a48157 in zend_execute (op_array=0x7fe9fb6deb90) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:388
#32 0x0000000000a48bfc in zend_do_fcall_common_helper_SPEC
(execute_data=0x7fea01fddc88)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:584
#33 0x0000000000a491b0 in ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER
(execute_data=0x7fea01fddc88)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:685
#34 0x0000000000a480cf in execute_ex (execute_data=0x7fea01fddc88) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:363
#35 0x00007fe9fbfd2c57 in xdebug_execute_ex (execute_data=0x7fea01fddc88) at
/tmp/pear/temp/xdebug/xdebug.c:1437
#36 0x0000000000a48157 in zend_execute (op_array=0x7fe9fb69c850) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:388
#37 0x0000000000a48bfc in zend_do_fcall_common_helper_SPEC
(execute_data=0x7fea01fdc7d8)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:584
#38 0x0000000000a491b0 in ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER
(execute_data=0x7fea01fdc7d8)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:685
#39 0x0000000000a480cf in execute_ex (execute_data=0x7fea01fdc7d8) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:363
#40 0x00007fe9fbfd2c57 in xdebug_execute_ex (execute_data=0x7fea01fdc7d8) at
/tmp/pear/temp/xdebug/xdebug.c:1437
#41 0x0000000000a48157 in zend_execute (op_array=0x7fe9fb6e6808) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:388
#42 0x0000000000a48bfc in zend_do_fcall_common_helper_SPEC
(execute_data=0x7fea01fdb768)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:584
#43 0x0000000000a491b0 in ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER
(execute_data=0x7fea01fdb768)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:685
#44 0x0000000000a480cf in execute_ex (execute_data=0x7fea01fdb768) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:363
#45 0x00007fe9fbfd2c57 in xdebug_execute_ex (execute_data=0x7fea01fdb768) at
/tmp/pear/temp/xdebug/xdebug.c:1437
#46 0x0000000000a48157 in zend_execute (op_array=0x7fe9fb6a9f30) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:388
#47 0x0000000000a48bfc in zend_do_fcall_common_helper_SPEC
(execute_data=0x7fea01fdb540)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:584
#48 0x0000000000a491b0 in ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER
(execute_data=0x7fea01fdb540)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:685
#49 0x0000000000a480cf in execute_ex (execute_data=0x7fea01fdb540) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:363
#50 0x00007fe9fbfd2c57 in xdebug_execute_ex (execute_data=0x7fea01fdb540) at
/tmp/pear/temp/xdebug/xdebug.c:1437
#51 0x0000000000a48157 in zend_execute (op_array=0x7fe9fb6a5538) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:388
---Type <return> to continue, or q <return> to quit---
#52 0x0000000000a48bfc in zend_do_fcall_common_helper_SPEC
(execute_data=0x7fea01fda210)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:584
#53 0x0000000000a491b0 in ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER
(execute_data=0x7fea01fda210)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:685
#54 0x0000000000a480cf in execute_ex (execute_data=0x7fea01fda210) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:363
#55 0x00007fe9fbfd2c57 in xdebug_execute_ex (execute_data=0x7fea01fda210) at
/tmp/pear/temp/xdebug/xdebug.c:1437
#56 0x0000000000a48157 in zend_execute (op_array=0x7fe9fb880078) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:388
#57 0x0000000000a48bfc in zend_do_fcall_common_helper_SPEC
(execute_data=0x7fea01fd7d88)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:584
#58 0x0000000000a491b0 in ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER
(execute_data=0x7fea01fd7d88)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:685
#59 0x0000000000a480cf in execute_ex (execute_data=0x7fea01fd7d88) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:363
#60 0x00007fe9fbfd2c57 in xdebug_execute_ex (execute_data=0x7fea01fd7d88) at
/tmp/pear/temp/xdebug/xdebug.c:1437
#61 0x0000000000a48157 in zend_execute (op_array=0x7fea01e62598) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:388
#62 0x0000000000a48bfc in zend_do_fcall_common_helper_SPEC
(execute_data=0x7fea01fd7470)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:584
#63 0x0000000000a491b0 in ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER
(execute_data=0x7fea01fd7470)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:685
#64 0x0000000000a480cf in execute_ex (execute_data=0x7fea01fd7470) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:363
#65 0x00007fe9fbfd2c57 in xdebug_execute_ex (execute_data=0x7fea01fd7470) at
/tmp/pear/temp/xdebug/xdebug.c:1437
#66 0x0000000000a48157 in zend_execute (op_array=0x7fea01e57b10) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:388
#67 0x0000000000a48bfc in zend_do_fcall_common_helper_SPEC
(execute_data=0x7fea01fd72c8)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:584
#68 0x0000000000a491b0 in ZEND_DO_FCALL_BY_NAME_SPEC_HANDLER
(execute_data=0x7fea01fd72c8)
at /root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:685
#69 0x0000000000a480cf in execute_ex (execute_data=0x7fea01fd72c8) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:363
#70 0x00007fe9fbfd2c57 in xdebug_execute_ex (execute_data=0x7fea01fd72c8) at
/tmp/pear/temp/xdebug/xdebug.c:1437
#71 0x0000000000a48157 in zend_execute (op_array=0x7fea01e56eb8) at
/root/php-5.5.4/php-5.5.4/Zend/zend_vm_execute.h:388
#72 0x0000000000a0a27f in zend_execute_scripts (type=8, retval=0x0,
file_count=3) at /root/php-5.5.4/php-5.5.4/Zend/zend.c:1318
#73 0x0000000000976e9e in php_execute_script (primary_file=0x7fff1717aeb0) at
/root/php-5.5.4/php-5.5.4/main/main.c:2489
#74 0x0000000000ab7ac7 in do_cli (argc=5, argv=0x1932ee0) at
/root/php-5.5.4/php-5.5.4/sapi/cli/php_cli.c:994
#75 0x0000000000ab8bff in main (argc=5, argv=0x1932ee0) at
/root/php-5.5.4/php-5.5.4/sapi/cli/php_cli.c:1378
------------------------------------------------------------------------
--
Edit this bug report at https://bugs.php.net/bug.php?id=65784&edit=1
