Bug #69521 [Com]: Segfault in gc_collect_cycles().
Edit report at https://bugs.php.net/bug.php?id=69521&edit=1
ID: 69521
Comment by: arjen at react dot com
Reported by: arjen at react dot com
Summary: Segfault in gc_collect_cycles().
Status: Open
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:
PR with fix and phpt testcase waiting at https://github.com/php/php-src/pull/1266
Could someone pull this for 7.0alpha2?
Previous Comments:
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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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[2015-04-24 11:39:47] laruence@php.net
Thank you for this bug report. To properly diagnose the problem, we
need a short but complete example script to be able to reproduce
this bug ourselves.
A proper reproducing script starts with <?php and ends with ?>,
is max. 10-20 lines long and does not require any external
resources such as databases, etc. If the script requires a
database to demonstrate the issue, please make sure it creates
all necessary tables, stored procedures etc.
Please avoid embedding huge scripts into the report.
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