From:
Operating system: linux
PHP version: 5.4.0
Package: *Compile Issues
Bug Type: Bug
Bug description:insteadof cause memory leak if class is not binded
Description:
------------
when class is not binded, "insteadof" cause a detected memory leak. see the
following script and output
==============
after days tracking, i lock on _destroy_zend_class_traits_info
if (ce->trait_precedences) {
size_t i = 0;
while (ce->trait_precedences[i]) {
efree((char*)ce->trait_precedences[i]->trait_method->method_name);
efree((char*)ce->trait_precedences[i]->trait_method->class_name);
efree(ce->trait_precedences[i]->trait_method);
if (ce->trait_precedences[i]->exclude_from_classes) {
efree(ce->trait_precedences[i]->exclude_from_classes); <-
before this line
}
ce->trait_precedences[i]->exclude_from_classes[0] is string, should but not
efree'ed, this is why it's leaking. however when the class is bind, it is
zend_class_entry and should not efree
Test script:
---------------
<?php
if (0) {
class A {
use b2, b33 {
b2::b444 insteadof b33;
b2::b444 as b5555;
}
}
}
Expected result:
----------------
./php-cgi -c php.ini test.php
X-Powered-By: PHP/5.4.1RC1-dev
Content-type: text/html
Actual result:
--------------
./php-cgi -c php.ini test.php
X-Powered-By: PHP/5.4.1RC1-dev
Content-type: text/html
[Mon Mar 26 13:40:12 2012] Script: 'ZZZZZZZZZZs|ââââ'â]âG'
Zend/zend_language_scanner.l(1889) : Freeing 0x7F4720728688 (4 bytes),
script=ZZZZZZZZZZs|ââââ'â]âG
=== Total 1 memory leaks detected ===
valgrind outputs:
==31399== 4 bytes in 1 blocks are definitely lost in loss record 1 of 84
==31399== at 0x4C2879E: malloc (in
/usr/lib64/valgrind/vgpreload_memcheck-
amd64-linux.so)
==31399== by 0x8E9C41: _emalloc (zend_alloc.c:2423)
==31399== by 0x8EA1A6: _estrndup (zend_alloc.c:2596)
==31399== by 0x8D050E: lex_scan (zend_language_scanner.l:1889)
==31399== by 0x905A52: zendlex (zend_compile.c:6666)
==31399== by 0x8C5F45: zendparse (zend_language_parser.c:3099)
==31399== by 0x8CC630: compile_file (zend_language_scanner.l:579)
==31399== by 0x6F2C45: phar_compile_file (phar.c:3391)
==31399== by 0x91F846: zend_execute_scripts (zend.c:1265)
==31399== by 0x896FEC: php_execute_script (main.c:2473)
==31399== by 0xA6D136: main (cgi_main.c:2422)
--
Edit bug report at https://bugs.php.net/bug.php?id=61506&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=61506&r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=61506&r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=61506&r=trysnapshottrunk
Fixed in SVN:
https://bugs.php.net/fix.php?id=61506&r=fixed
Fixed in SVN and need be documented:
https://bugs.php.net/fix.php?id=61506&r=needdocs
Fixed in release:
https://bugs.php.net/fix.php?id=61506&r=alreadyfixed
Need backtrace:
https://bugs.php.net/fix.php?id=61506&r=needtrace
Need Reproduce Script:
https://bugs.php.net/fix.php?id=61506&r=needscript
Try newer version:
https://bugs.php.net/fix.php?id=61506&r=oldversion
Not developer issue:
https://bugs.php.net/fix.php?id=61506&r=support
Expected behavior:
https://bugs.php.net/fix.php?id=61506&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=61506&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=61506&r=submittedtwice
register_globals:
https://bugs.php.net/fix.php?id=61506&r=globals
PHP 4 support discontinued:
https://bugs.php.net/fix.php?id=61506&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=61506&r=dst
IIS Stability:
https://bugs.php.net/fix.php?id=61506&r=isapi
Install GNU Sed:
https://bugs.php.net/fix.php?id=61506&r=gnused
Floating point limitations:
https://bugs.php.net/fix.php?id=61506&r=float
No Zend Extensions:
https://bugs.php.net/fix.php?id=61506&r=nozend
MySQL Configuration Error:
https://bugs.php.net/fix.php?id=61506&r=mysqlcfg
