Bug #63984 [Asn->Dup]: Generators segfault

From: Date: Mon, 14 Jan 2013 23:53:49 +0000
Subject: Bug #63984 [Asn->Dup]: Generators segfault
References: 1  Groups: php.bugs 
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Edit report at https://bugs.php.net/bug.php?id=63984&edit=1

 ID:                 63984
 Updated by:         arpad@php.net
 Reported by:        arpad@php.net
 Summary:            Generators segfault
-Status:             Assigned
+Status:             Duplicate
 Type:               Bug
 Package:            Reproducible crash
 Operating System:   Linux
 PHP Version:        5.5.0alpha2
 Assigned To:        nikic
 Block user comment: N
 Private report:     N

 New Comment:

Duplicate of #63830


Previous Comments:
------------------------------------------------------------------------
[2013-01-14 23:53:12] arpad@php.net

Yes indeed, cheers Nikita.

------------------------------------------------------------------------
[2013-01-14 15:53:20] nikic@php.net

@arpad: If it happens when exit; is called then it's basically the same issue, just a different
cause. I'll try to fix this issue sometime soon.

------------------------------------------------------------------------
[2013-01-14 15:28:14] arpad@php.net

I think it's when "exit" is called during the execution of the generator, wasn't
getting any errors though. I'll put together a repro script later.

------------------------------------------------------------------------
[2013-01-14 15:21:47] nikic@php.net

Do you know whether this segfault happens in conjunction with a fatal error? It's probably the
same as https://bugs.php.net/bug.php?id=63830.

------------------------------------------------------------------------
[2013-01-14 11:43:00] arpad@php.net

Also the generators are all closures, the following is one of the simpler ones:

		$exp = new Ruler_Expression_Anonymous;
		$exp->provides = array('friend');

		$self = $this;
		$friends = $this->friends;

		$exp->func = function() use ($self, $friends) {
			foreach ($friends as $id => $name) {
				yield [
					'friend' => new Resource_User($id, $self),
				];
			}
		};

Bit more information from GDB (frame 1 in the above backtrace):

(gdb) p stack_frame
$1 = (void **) 0x7ffff8e08f38
(gdb) p *stack_frame
$2 = (void *) 0x0

------------------------------------------------------------------------


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