From: chris at lodesys dot com
Operating system: Windows 2000
PHP version: 5CVS-2006-01-03 (snap)
PHP Bug Type: Reproducible crash
Bug description: file_get_contents fails with some combinations of offset &
maxlen
Description:
------------
This one is weird. For some value of offset & maxlen, file_get_contents
will fail and crash PHP. (I'm running under Apache 1.3.34 and get a Dr.
Watson). The combination may have something to do with offset + maxlen
just above 4096, but even that's not consistant.
Reproduce code:
---------------
$x = file_get_contents("C:/php/news.txt", FALSE, NULL, 500, 3596); //
WORKS
$x = file_get_contents("C:/php/news.txt", FALSE, NULL, 500, 3597); //
FAILS
$x = file_get_contents("C:/php/news.txt", FALSE, NULL, 500, 4096); //
FAILS
$x = file_get_contents("C:/php/news.txt", FALSE, NULL, 500, 4097); //
WORKS
$x = file_get_contents("C:/php/news.txt", FALSE, NULL, 1000, 4096); //
FAILS
$x = file_get_contents("C:/php/news.txt", FALSE, NULL, 1000, 4097); //
WORKS
$x = file_get_contents("C:/php/news.txt", FALSE, NULL, 0, 4096); //
WORKS
$x = file_get_contents("C:/php/news.txt", FALSE, NULL, 0, 4097); //
WORKS
Expected result:
----------------
All combinations of offset & maxlen should work as news.txt is 74 KB long.
Actual result:
--------------
PHP fails in some instances (see above) with Dr. Watson reporting
"Application exception occurred: App: (pid=1828)[apache.exe] Exception
number: c0000005 (access violation)"
Using
--
Edit bug report at http://bugs.php.net/?id=35886&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=35886&r=trysnapshot44
Try a CVS snapshot (PHP 5.1):
http://bugs.php.net/fix.php?id=35886&r=trysnapshot51
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=35886&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=35886&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=35886&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=35886&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=35886&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=35886&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=35886&r=support
Expected behavior: http://bugs.php.net/fix.php?id=35886&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=35886&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=35886&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=35886&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=35886&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=35886&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=35886&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=35886&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=35886&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=35886&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=35886&r=mysqlcfg
