Bug #69521 [Opn->Csd]: Segfault in gc_collect_cycles().

From: Date: Thu, 02 Jul 2015 10:47:08 +0000
Subject: Bug #69521 [Opn->Csd]: Segfault in gc_collect_cycles().
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-194058@lists.php.net to get a copy of this message 
Edit report at https://bugs.php.net/bug.php?id=69521&edit=1

 ID:                 69521
 Updated by:         laruence@php.net
 Reported by:        arjen at react dot com
 Summary:            Segfault in gc_collect_cycles().
-Status:             Open
+Status:             Closed
 Type:               Bug
 Package:            Reproducible crash
 Operating System:   Linux
 PHP Version:        master-Git-2015-04-24 (Git)
 Block user comment: N
 Private report:     N

 New Comment:

Automatic comment on behalf of laruence
Revision: http://git.php.net/?p=php-src.git;a=commit;h=72b0627315e6606310c1042a51dad6e835620bab
Log: Fixed bug #69521 (Segfault in gc_collect_cycles()).


Previous Comments:
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[2015-06-24 08:19:37] arjen at react dot com

PR with fix and phpt testcase waiting at https://github.com/php/php-src/pull/1266

Could someone pull this for 7.0alpha2?

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[2015-05-08 07:55:18] arjen at react dot com

PR @ https://github.com/php/php-src/pull/1266

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[2015-04-29 13:05:19] arjen at react dot com

Testcase and output @ https://gist.github.com/arjenschol/a640117e58935572cf87

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[2015-04-24 13:35:29] rasmus@php.net

But which test is triggering it?

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[2015-04-24 12:14:12] arjen at react dot com

Let me quote myself: "Do you have a testcase available or can I help by finding one?"

I recompiled with -DZEND_GC_DEBUG=2 and got the following:

[0xfdbe400] rc=1 addr=0 black array(1) ->purple
[...]
[0xfdbe400] rc=1 addr=2947 purple array(-1019662895) ->grey

After the last line, the segfault occurs. These are the only occurences of 0xfdbe400

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