From: cbimax at gmail dot com
Operating system: Linux Gentoo K.2.6.20
PHP version: 5.2.3
PHP Bug Type: Math related
Bug description: GMP functions exhausts memory
Description:
------------
Any gmp_* function running on PHP 5.2.2-r1 (compiled with GMP extensions),
throws after a few invokes "Fatal error: Allowed memory size of <varies
from 7M to 8M> bytes exhausted (tried to allocate 16 bytes) in <file.php>".
Reproduce code:
---------------
for( $i= 0; $i!= 100000; $i++ )
{
$node = gmp_init( $i );
$id = gmp_div( $node, '0x100000000' );
$edge = gmp_and( $node, '0xffffffff' );
$vert = gmp_div( $node, '0x1000' );
$path = gmp_and( $node, '0x00ff' );
$str_edge = gmp_strval( $edge );
$str_vert = gmp_strval( $vert );
$str_path = gmp_strval( $path );
echo "Graph -> ($str_edge, $str_vert, $str_path) \n";
}
Expected result:
----------------
The iterated procedure runs on PHP 5.1.x (and PHP 5.0.x) near to 1 million
times per call.
In this case, it's only runs 500 times and then drop the Fatal error.
Actual result:
--------------
Fatal error: Allowed memory size of 8388608 bytes exhausted (tried to
allocate 16 bytes) in quixtor/compute-graph-map.php on line 443 (actually
line 443 isn't a gmp related function, but it is called under for()
iteration which uses GMP functions).
--
Edit bug report at http://bugs.php.net/?id=42390&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=42390&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=42390&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=42390&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=42390&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=42390&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=42390&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=42390&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=42390&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=42390&r=support
Expected behavior: http://bugs.php.net/fix.php?id=42390&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=42390&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=42390&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=42390&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=42390&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=42390&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=42390&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=42390&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=42390&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=42390&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=42390&r=mysqlcfg
