#35891 [NEW]: Erroneous code thru eval() causes memory leak

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