Bug #69615 [NEW]: memory leak with eval declaring closure

From: ryan dot brothers at gmail dot com Operating system: Linux PHP version: 5.6.8 Package: Performance problem Bug Type: Bug Bug description:memory leak with eval declaring closure Description: ------------ I am seeing a memory leak when using eval() to declare a closure in certain cases. In the below example, the memory usage increases by about 1MB when it should remain relatively constant. Test script: --------------- <?php function test() { $php_code = '$run = function() {'; foreach (range(1, 15) as $a) { $php_code .= 'if (1 == 1) { $aaaaaa = true; } else { $aaaaaa = false; }'; } $php_code .= '};'; eval($php_code); } echo number_format(memory_get_usage())."\n"; for ($i = 0; $i <= 1000; $i++) { test(); } echo number_format(memory_get_usage())."\n"; Expected result: ---------------- 224,440 224,440 Actual result: -------------- 224,440 1,271,128 -- Edit bug report at https://bugs.php.net/bug.php?id=69615&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=69615&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=69615&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=69615&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=69615&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=69615&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=69615&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=69615&r=needscript Try newer version: https://bugs.php.net/fix.php?id=69615&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=69615&r=support Expected behavior: https://bugs.php.net/fix.php?id=69615&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=69615&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=69615&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=69615&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=69615&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=69615&r=dst IIS Stability: https://bugs.php.net/fix.php?id=69615&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=69615&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=69615&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=69615&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=69615&r=mysqlcfg