From:
Operating system: Linux
PHP version: 5.3.3
Package: Scripting Engine problem
Bug Type: Bug
Bug description:memory leak when throwing exception in custom handler in
functions
Description:
------------
I encountered a similar issue to #25335 where custom error handler +
exceptions
leaks memory but only when try-catch block is in a function and looped
through
directly. I imagine there's some scope/GC issues here, and whether this is
actual
bug or limitation of PHP.
Test script:
---------------
<?
set_error_handler(function($errno, $errstr, $errfile, $errline){
throw new Exception($errstr);
});
function leak() {
while (true) {
try {
// throw new Exception(); //it doesn't leak if it's thrown
directly
1 / 0; //leaks
} catch (Exception $e) {}
echo memory_get_usage(), PHP_EOL;
}
}
leak();
/* it doesn't leak if it's outside of the function */
while (true) {
try {
1 / 0;
} catch (Exception $e) {
}
echo memory_get_usage(), PHP_EOL;
}
/* it doesn't leak if try-catch block is in a separate function */
function foo() {
$try = function(){
try {1 / 0;} catch (Exception $e) {}
};
while (true) {
$try();
echo memory_get_usage(), PHP_EOL;
}
}
foo();
Expected result:
----------------
637512
637512
637512
637512
637512
637512
...
Actual result:
--------------
639432
644272
649080
653896
658704
663512
668320
...
--
Edit bug report at http://bugs.php.net/bug.php?id=53228&edit=1
--
Try a snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=53228&r=trysnapshot52
Try a snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=53228&r=trysnapshot53
Try a snapshot (trunk):
http://bugs.php.net/fix.php?id=53228&r=trysnapshottrunk
Fixed in SVN:
http://bugs.php.net/fix.php?id=53228&r=fixed
Fixed in SVN and need be documented:
http://bugs.php.net/fix.php?id=53228&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=53228&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=53228&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=53228&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=53228&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=53228&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=53228&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=53228&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=53228&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=53228&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=53228&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=53228&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=53228&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=53228&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=53228&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=53228&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=53228&r=mysqlcfg
