Segmentation fault with PHP 5.6.16

[prolic]

see also: https://bugs.php.net/bug.php?id=71011

Bug appears in 5.6.15 & 5.6.16.
5.6.11 however is good!
5.6.09 and 5.6.13 seems to be good as well (tested on other machines).

I could not yet isolate the bug, but can show how to reproduce it.

Steps to reproduce:

git clone https://github.com/zendframework/ZendSkeletonApplication
cd ZendSkeletonApplication
composer install
composer require prolic/humus-supervisor-module dev-master
composer require prolic/humus-amqp-demo-module v0.1.1

vi config/application.config.php
add to your module's array:

'HumusAmqpModule',
'HumusAmqpDemoModule',

php public/index.php humus amqp setup-fabric

Output:
Setting up the AMQP fabric
Declaring exchanges ...
Declaring queues ...
[1] 15474 segmentation fault (core dumped)

Backtrace:
`
#0 _zend_mm_free_int (heap=0x135c940, p=0x1aa4978) at /home/sasa/Downloads/php-5.6.16/Zend/zend_alloc.c:2104
#1 0x0000000000870697 in zend_object_std_dtor (object=0x1adc620, tsrm_ls=) at /home/sasa/Downloads/php-5.6.16/Zend/zend_objects.c:54
#2 0x00000000008706c9 in zend_objects_free_object_storage (object=0x1adc620, tsrm_ls=)

at /home/sasa/Downloads/php-5.6.16/Zend/zend_objects.c:137

#3 0x0000000000877596 in zend_objects_store_del_ref_by_handle_ex (handle=, handlers=, tsrm_ls=tsrm_ls@entry=0x135c3a0)

at /home/sasa/Downloads/php-5.6.16/Zend/zend_objects_API.c:226

#4 0x00000000008775ee in zend_objects_store_del_ref (zobject=0x1ae3750, tsrm_ls=0x135c3a0)

at /home/sasa/Downloads/php-5.6.16/Zend/zend_objects_API.c:178

#5 0x00000000008baa62 in _zval_dtor (zvalue=0x1ae3750) at /home/sasa/Downloads/php-5.6.16/Zend/zend_variables.h:35
#6 zend_assign_to_variable (tsrm_ls=0x135c3a0, value=0x17c9c88, variable_ptr_ptr=0x7f8a708bafc0)

at /home/sasa/Downloads/php-5.6.16/Zend/zend_execute.c:922

#7 ZEND_ASSIGN_SPEC_CV_VAR_HANDLER (execute_data=0x7f8a708baec0, tsrm_ls=0x135c3a0) at /home/sasa/Downloads/php-5.6.16/Zend/zend_vm_execute.h:37468
#8 0x000000000088754b in execute_ex (execute_data=0x7f8a708baec0, tsrm_ls=0x135c3a0) at /home/sasa/Downloads/php-5.6.16/Zend/zend_vm_execute.h:363
#9 0x0000000000834fb6 in zend_call_function (fci=fci@entry=0x7ffcc0819960, fci_cache=, fci_cache@entry=0x7ffcc0819930,

tsrm_ls=tsrm_ls@entry=0x135c3a0) at /home/sasa/Downloads/php-5.6.16/Zend/zend_execute_API.c:829

#10 0x0000000000714e0c in zif_call_user_func (ht=, return_value=0x198a3a0, return_value_ptr=, this_ptr=,

return_value_used=<optimized out>, tsrm_ls=0x135c3a0) at /home/sasa/Downloads/php-5.6.16/ext/standard/basic_functions.c:4759

#11 0x000000000090091e in zend_do_fcall_common_helper_SPEC (execute_data=, tsrm_ls=0x135c3a0)

at /home/sasa/Downloads/php-5.6.16/Zend/zend_vm_execute.h:558

#12 0x000000000088754b in execute_ex (execute_data=0x7f8a708b9880, tsrm_ls=0x135c3a0) at /home/sasa/Downloads/php-5.6.16/Zend/zend_vm_execute.h:363
#13 0x000000000084767c in zend_execute_scripts (type=type@entry=8, tsrm_ls=tsrm_ls@entry=0x135c3a0, retval=retval@entry=0x0,

file_count=file_count@entry=3) at /home/sasa/Downloads/php-5.6.16/Zend/zend.c:1341

#14 0x00000000007d428a in php_execute_script (primary_file=primary_file@entry=0x7ffcc081bfe0, tsrm_ls=tsrm_ls@entry=0x135c3a0)

at /home/sasa/Downloads/php-5.6.16/main/main.c:2597

#15 0x00000000009026f6 in do_cli (argc=5, argv=0x135c300, tsrm_ls=0x135c3a0) at /home/sasa/Downloads/php-5.6.16/sapi/cli/php_cli.c:994
#16 0x0000000000434254 in main (argc=5, argv=0x135c300) at /home/sasa/Downloads/php-5.6.16/sapi/cli/php_cli.c:1378

`

[pinepain]

Hi! Thanks for reporting!

To help to locate a problem, please provide following info:

• platform info (uname -a, lsb_release -a);
• whether any virtualization used (docket, vagrant, etc.);
• php interpreter version (php -v);
• SAPI mode (cli, fpm, cgi, etc) extension is used in;
• php-amqp extension version (php --ri amqp) and a way it was installed (pecl, from sources or binaries, if from binaries, post a link to it, if it an option);
• librabbitmq version and a way it was installed (sources, from distro repo, third-party binaries);
• RabbitMQ server version.

If you are able (or will be, in case you locate problem), please, provide also minimal code to reproduce the problem.

P.S.: Please, put stacktrace in codeblock while hash-numbers #<number> parsed as a reference to issues and pull-request and creates there unnecessary mentions which may be confused for further researches.

[prolic]

uname -a

Linux sasa-X1 4.2.0-22-generic #27-Ubuntu SMP Thu Dec 17 22:57:08 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

lsb_release -a

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 15.10
Release: 15.10
Codename: wily

no docker / vagrant in use, plain ubuntu, tested on several machines

php -v
PHP 5.6.16 (cli) (built: Dec 1 2015 21:29:40)
(problem is also there with 5.6.15 and could be reproduced with 5.6.11 as well today)

sapi module:
cli

ext-amqp 1.6.1. (from pecl)

librabbitmq-version: 0.5.2

RabbitMQ Server 3.5.4

[prolic]

Will update to librabbitmq-c v0.7.1 and test again.

[pinepain]

Please, try php-amqp 1.7.0alpha2 or from my branch from PR #194. Using more recent librabbitmq is also good idea.

[prolic]

I just compiled librabbitmq-c v0.7.1 and reinstalled amqp extension, same problem.

[pinepain]

librabbitmq is less likely the problem, try more recent php-amqp extension itself (as I suggested in post above).

After your original report I tried to reproduce as you described and everything looks working on PHP 7:

using 1.7.0alpha2

$ php --ri amqp

amqp

Version => v1.7.0alpha2-master-dev
Revision => 8573ac1

...

$ php public/index.php humus amqp setup-fabric
Setting up the AMQP fabric
Declaring exchanges ...
Declaring queues ...
DONE

and using my branch from PR #194:

$ php --ri amqp

amqp

Version => v1.7.0alpha1-fix_stalled_connection_resource-dev
Revision => 5879bc3

...

$ php public/index.php humus amqp setup-fabric
Setting up the AMQP fabric
Declaring exchanges ...
Declaring queues ...
DONE

Give it a try with PHP 5, since php-amqp 1.7.0 we support both PHP 5 and PHP 7.

[prolic]

I just recompiled php amqp extension from your PR #194 and the problem is gone.
Thank you very much!!!

When will it be merged and ready for release?

Btw: When is the php 7 support finalized?

[pinepain]

I guess PR will be reviewd and merged after xmas and ny holidays.

PHP 7 fully supported in 1.7.0 already (if I understood your question correct). You can always check what versions "officially" supported by checking travis build matrix (PHP 7 with memcheck builds are red due to outdated valgrind version).

[pinepain]

P.S.: Please, put stacktrace in codeblock while hash-numbers # parsed as a reference to issues and pull-request and creates there unnecessary mentions which may be confused for further researches.

[prolic]

1.7.0 is only alpha2 and not final, as far as I can see. My question was about when I can expect a final release. I really apprieciate your work !!!

FYI: I am working on a rewrite of my amqp lib for php at https://github.com/prolic/HumusAmqp. Perhaps you'll find it useful. Any feedback is welcome :)

Closing this issue now, as your PR #194 solves it.

[pinepain]

I have https://github.com/pinepain/amqpy (there are branch where I start rewriting to add php-amqplib support) and https://github.com/pinepain/parsley, which is more a proof of concept, needs refactoring and redesign, but may be used as a reference for further works. Check it, maybe you will find it useful.

[prolic]

Thanks! Will definitely take a look!

Wish you a happy new year!