Bug #63913 [Opn->Fbk]: Segfault on preg_replace with some weird conditions
Edit report at https://bugs.php.net/bug.php?id=63913&edit=1
ID: 63913
Updated by: pajoye@php.net
Reported by: seld@php.net
Summary: Segfault on preg_replace with some weird conditions
-Status: Open
+Status: Feedback
Type: Bug
Package: *Regular Expressions
Operating System: Windows 7 x64
PHP Version: 5.5.0alpha2
Block user comment: N
Private report: N
New Comment:
Can you provide a full BT please? Debug
symbols must be loaded or the symbol path.
Also I suspect the classic pcre stack limit
crash issue here. Can you try to increase it
using edit in and run the test again? If you
could provide the simple pcre call, if it us
actually a pcre crash.
Previous Comments:
------------------------------------------------------------------------
[2013-01-06 00:15:10] seld@php.net
Description:
------------
The composer test suite segfaults on 5.5 as you can see on https://travis-ci.org/composer/composer/jobs/3971664
I tried investigating on my machine and could not get to the bottom of it, so here are my findings,
I hope someone else can reproduce and will have more of a clue than I do.
The weirdest thing is that *sometimes* depending on the code changes I make to runme.php (see https://gist.github.com/7f465d4109d667a73984)
it actually runs through fine, but most of the time it crashes. Then a bit later if I try and do a
similar change it crashes again, either it's an intermittent system issue or something's
very wrong. Since it also segfaults on travis I would assume the latter.
Note that tweaking the input to the preg_replace call (by removing bits and pieces of testcase.php)
also tends to make it work sometimes. For example removing the "}" at line 15 makes it
work for me.
Test script:
---------------
Run these commands:
git clone https://gist.github.com/7f465d4109d667a73984.git
reproduce
cd reproduce/
php runme.php
Expected result:
----------------
With 5.4.8 VC9 TS I get the following:
$ php runme.php
string(8) "content:"
string(103) "<?php\n namespace Foo; class StripNoise { public function test() { return
<<<A\nclass Fail23\n{\n}\nA\n; }
} "
string(4) "test"
string(2) "aa"
string(8) "starting"
string(4) "done"
bool(true)
Actual result:
--------------
With 5.5.0-alpha2 V9 TS I get this:
$ php runme.php
string(8) "content:"
string(103) "<?php
namespace Foo; class StripNoise { public function test() { return <<<A
class Fail23
{
}
A
; } } "
string(4) "test"
--- then the process crashes and I get a crash window with the following details ---
Problem signature:
Problem Event Name: APPCRASH
Application Name: php.exe
Application Version: 5.5.0.0
Application Timestamp: 50d1254a
Fault Module Name: php5ts.dll
Fault Module Version: 5.5.0.0
Fault Module Timestamp: 50d13446
Exception Code: c0000005
Exception Offset: 0004762d
OS Version: 6.1.7601.2.1.0.256.1
Locale ID: 4108
Additional Information 1: 0a9e
Additional Information 2: 0a9e372d3b4ad19135b953a78882e789
Additional Information 3: 0a9e
Additional Information 4: 0a9e372d3b4ad19135b953a78882e789
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=63913&edit=1
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