From: taneli at crasman dot fi
Operating system: Linux
PHP version: 5.1.1
PHP Bug Type: Scripting Engine problem
Bug description: Erroneous code thru eval() causes memory leak
Description:
------------
Running unparsable code - which shouldn't be done, of course, but - causes
a memory leak. Proper, parsable code does not cause memory leaks.
Reproduce code:
---------------
<?{
echo "Erroneous code eval():\n";
echo "Memory used before: " . memory_get_usage() . "\n";
for ($i = 0; $i < 1000; $i++)
{
eval('$foo = 1; $bar = 2; asdf');
echo "Loop $i, memory used: " . memory_get_usage() . "\n";
}
echo "Memory used after: " . memory_get_usage() . "\n";
echo "\nProper code eval():\n";
echo "Memory used before: " . memory_get_usage() . "\n";
for ($i = 0; $i < 1000; $i++)
{
eval('$foo = 1; $bar = 2;');
echo "Loop $i, memory used: " . memory_get_usage() . "\n";
}
echo "Memory used after: " . memory_get_usage() . "\n";
}?>
Expected result:
----------------
Erroneous code eval():
Memory used before: 42568
Loop 1, memory used: 42568
...
Loop 999, memory used: 42568
Memory used after: 42568
Proper code eval():
Memory used before: 42568
Loop 1, memory used: 42568
...
Loop 999, memory used: 42568
Memory used after: 42568
Actual result:
--------------
Erroneous code eval():
Memory used before: 42568
Loop 0, memory used: 49960
Loop 1, memory used: 57040
Loop 2, memory used: 64088
Loop 3, memory used: 71136
...
Loop 999, memory used: 7073088
Memory used after: 7073064
Proper code eval():
Memory used before: 7073064
Loop 0, memory used: 7073376
...
Loop 999, memory used: 7073376
Memory used after: 7073352
--
Edit bug report at http://bugs.php.net/?id=35891&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=35891&r=trysnapshot44
Try a CVS snapshot (PHP 5.1):
http://bugs.php.net/fix.php?id=35891&r=trysnapshot51
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=35891&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=35891&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=35891&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=35891&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=35891&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=35891&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=35891&r=support
Expected behavior: http://bugs.php.net/fix.php?id=35891&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=35891&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=35891&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=35891&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=35891&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=35891&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=35891&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=35891&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=35891&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=35891&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=35891&r=mysqlcfg
