#46568 [Opn->Csd]: Segfault on 64bit when chaining function calls that generate exceptions

From:	phpbugs at colin dot guthr dot ie	Date:	Wed, 19 Nov 2008 09:36:50 +0000
Subject:	#46568 [Opn->Csd]: Segfault on 64bit when chaining function calls that generate exceptions
References:	1	Groups:	php.bugs
Request:	Send a blank email to php-bugs+get-131094@lists.php.net to get a copy of this message

 ID:               46568
 User updated by:  phpbugs at colin dot guthr dot ie
 Reported By:      phpbugs at colin dot guthr dot ie
-Status:           Open
+Status:           Closed
 Bug Type:         Scripting Engine problem
 Operating System: * (64bit)
 PHP Version:      5.2.7RC3
 New Comment:

Thank you for your help Mr Rodriguez!

The first CFLAGs option was sufficient to not trigger the segv.

This is clearly not a problem of PHP and the problem obviously lies
with the GCC in Mandriva.

I'll raise the bug within our own systems for that.

Thanks to everyone for their patience and effort in helping diagnose
this issue.


Previous Comments:
------------------------------------------------------------------------

[2008-11-19 05:22:00] crrodriguez at opensuse dot org

Yes, it suggest that your compiler optimized badly.. try 

export CFLAGS="-O2 -fno-strict-aliasing"  and rebuild. if still
crashes... try -O1..

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

[2008-11-18 21:20:43] phpbugs at colin dot guthr dot ie

OK, I repeated the make test sans-debug and it seems that a couple more
tests fail under this scenario.

http://kenobi.mandriva.com/~colin/php_test_results_20081118_2054.txt

The most interesting extra failure is:
Bug #30707 (Segmentation fault on exception in method)
[Zend/tests/bug30707.phpt]

This could perhaps provide some clues?

For convenience, here is a diff of non-debug vs. debug:
http://kenobi.mandriva.com/~colin/php-make-test.diff.txt

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

[2008-11-18 20:46:09] phpbugs at colin dot guthr dot ie

Just tried --enable-debug and when built this way, it does indeed work
as expected. Does this suggest anything else I can try to narrow down
the problem.

I also tried make test and did get several failures.

I uploaded the test results to
http://kenobi.mandriva.com/~colin/php_test_results_20081118_2006.txt
although none of these look particularly relevant. I will do another
build sans --enable-debug and see if any different standard tests fail.

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

[2008-11-18 18:11:21] crrodriguez at opensuse dot org

Did you built 5.2.7RC3 with --enable-debug ? if not, try that, does it
crash anyway ?

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

[2008-11-18 17:36:56] phpbugs at colin dot guthr dot ie

Thanks for all the feedback/help. I will have to investigate further. I
do not think my system hardware is at fault due to having confirmed on
two other machines, although both Mandriva based. This is why I
suspected the compiler.

I will try and work out more info.

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

The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at
    http://bugs.php.net/46568

-- 
Edit this bug report at http://bugs.php.net/?id=46568&edit=1



   

Thread (14 messages)

• phpbugs at colin dot guthr dot ieThu, 13 Nov 2008 16:18:14 +0000
  • felipe@php.netThu, 13 Nov 2008 22:23:05 +0000#46568 [Opn]: Segfault on 64bit when chaining function calls that generate exceptions
  • phpbugs at colin dot guthr dot ieThu, 13 Nov 2008 22:41:06 +0000#46568 [Opn]: Segfault on 64bit when chaining function calls that generate exceptions
  • bruno at ioda dot netSun, 16 Nov 2008 08:03:49 +0000#46568 [Com]: Segfault on 64bit when chaining function calls that generate exceptions
  • jani@php.netMon, 17 Nov 2008 10:18:58 +0000#46568 [Opn->Fbk]: Segfault on 64bit when chaining function calls that generate exceptions
  • phpbugs at colin dot guthr dot ieMon, 17 Nov 2008 21:51:10 +0000#46568 [Com]: Segfault on 64bit when chaining function calls that generate exceptions
  • crrodriguez at opensuse dot orgTue, 18 Nov 2008 17:23:17 +0000#46568 [Com]: Segfault on 64bit when chaining function calls that generate exceptions
  • phpbugs at colin dot guthr dot ieTue, 18 Nov 2008 17:36:57 +0000#46568 [Fbk->Opn]: Segfault on 64bit when chaining function calls that generate exceptions
  • crrodriguez at opensuse dot orgTue, 18 Nov 2008 18:11:22 +0000#46568 [Com]: Segfault on 64bit when chaining function calls that generate exceptions
  • phpbugs at colin dot guthr dot ieTue, 18 Nov 2008 20:46:09 +0000#46568 [Opn]: Segfault on 64bit when chaining function calls that generate exceptions
  • phpbugs at colin dot guthr dot ieTue, 18 Nov 2008 21:20:44 +0000#46568 [Opn]: Segfault on 64bit when chaining function calls that generate exceptions
  • crrodriguez at opensuse dot orgWed, 19 Nov 2008 05:22:01 +0000#46568 [Com]: Segfault on 64bit when chaining function calls that generate exceptions
  • phpbugs at colin dot guthr dot ieWed, 19 Nov 2008 09:36:50 +0000#46568 [Opn->Csd]: Segfault on 64bit when chaining function calls that generate exceptions
  • phpbugs at colin dot guthr dot ieWed, 19 Nov 2008 09:57:34 +0000#46568 [Csd]: Segfault on 64bit when chaining function calls that generate exceptions