Bug #61584 [NEW]: when using readline_info to set line_buffer, it causes memory corruption

From: Date: Sat, 31 Mar 2012 19:08:24 +0000
Subject: Bug #61584 [NEW]: when using readline_info to set line_buffer, it causes memory corruption
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-169104@lists.php.net to get a copy of this message 
From:             
Operating system: Linux
PHP version:      5.4.0
Package:          Readline related
Bug Type:         Bug
Bug description:when using readline_info to set line_buffer, it causes memory corruption

Description:
------------
Using the function readline_info to set the property "line_buffer" performs
a 
direct setting of readline rl_line_buffer. It works for short lived scripts
but 
for longer ones, they start to crash randomly with sig violations.
The proper way for libreadline is to use rl_replace_line to set the line
buffer.

In addition, readline_info does not allow you to set "point" and "end"
properties 
that are needed when changing line_buffer.

I've included a patch that fixes the setting of "line_buffer" and adds the

ability to set both "point" and "end" properties.

Test script:
---------------
None. Random crashes.

Expected result:
----------------
None.


Actual result:
--------------
None.

-- 
Edit bug report at https://bugs.php.net/bug.php?id=61584&edit=1
-- 
Try a snapshot (PHP 5.4):            https://bugs.php.net/fix.php?id=61584&r=trysnapshot54
Try a snapshot (PHP 5.3):            https://bugs.php.net/fix.php?id=61584&r=trysnapshot53
Try a snapshot (trunk):              https://bugs.php.net/fix.php?id=61584&r=trysnapshottrunk
Fixed in SVN:                        https://bugs.php.net/fix.php?id=61584&r=fixed
Fixed in SVN and need be documented: https://bugs.php.net/fix.php?id=61584&r=needdocs
Fixed in release:                    https://bugs.php.net/fix.php?id=61584&r=alreadyfixed
Need backtrace:                      https://bugs.php.net/fix.php?id=61584&r=needtrace
Need Reproduce Script:               https://bugs.php.net/fix.php?id=61584&r=needscript
Try newer version:                   https://bugs.php.net/fix.php?id=61584&r=oldversion
Not developer issue:                 https://bugs.php.net/fix.php?id=61584&r=support
Expected behavior:                   https://bugs.php.net/fix.php?id=61584&r=notwrong
Not enough info:                     https://bugs.php.net/fix.php?id=61584&r=notenoughinfo
Submitted twice:                     https://bugs.php.net/fix.php?id=61584&r=submittedtwice
register_globals:                    https://bugs.php.net/fix.php?id=61584&r=globals
PHP 4 support discontinued:          https://bugs.php.net/fix.php?id=61584&r=php4
Daylight Savings:                    https://bugs.php.net/fix.php?id=61584&r=dst
IIS Stability:                       https://bugs.php.net/fix.php?id=61584&r=isapi
Install GNU Sed:                     https://bugs.php.net/fix.php?id=61584&r=gnused
Floating point limitations:          https://bugs.php.net/fix.php?id=61584&r=float
No Zend Extensions:                  https://bugs.php.net/fix.php?id=61584&r=nozend
MySQL Configuration Error:           https://bugs.php.net/fix.php?id=61584&r=mysqlcfg

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