ID: 48643
Updated by: johan...@php.net
Reported By: z...@php.net
Status: Open
Bug Type: Scripting Engine problem
Operating System: Linux (Ubuntu)
PHP Version: 5.2CVS-2009-06-22 (CVS)
Assigned To: dmitry
New Comment:
The following patch fixes the issue. Might not be the nicest way and
probably some other code in there might need a similar fix.
Index: Zend/zend_API.c
===================================================================
RCS file: /repository/ZendEngine2/zend_API.c,v
retrieving revision 1.296.2.27.2.34.2.64
diff -u -p -r1.296.2.27.2.34.2.64 zend_API.c
--- Zend/zend_API.c 4 Jun 2009 18:20:42 -0000
1.296.2.27.2.34.2.64
+++ Zend/zend_API.c 23 Jun 2009 21:33:04 -0000
@@ -254,10 +254,13 @@ ZEND_API int zend_get_object_classname(c
static int parse_arg_object_to_string(zval **arg, char **p, int *pl,
int type TSRMLS_DC) /* {{{ */
{
if (Z_OBJ_HANDLER_PP(arg, cast_object)) {
+ zval tmp;
+ INIT_PZVAL(&tmp);
SEPARATE_ZVAL_IF_NOT_REF(arg);
- if (Z_OBJ_HANDLER_PP(arg, cast_object)(*arg, *arg, type
TSRMLS_CC) == SUCCESS) {
- *pl = Z_STRLEN_PP(arg);
- *p = Z_STRVAL_PP(arg);
+ if (Z_OBJ_HANDLER_PP(arg, cast_object)(*arg, &tmp, type
TSRMLS_CC) == SUCCESS) {
+ *pl = Z_STRLEN(tmp);
+ *p = Z_STRVAL(tmp);
+ zval_dtor(&tmp);
return SUCCESS;
}
}
Previous Comments:
------------------------------------------------------------------------
[2009-06-23 19:56:31] z...@php.net
Hi dmitry - please would you look at this?
------------------------------------------------------------------------
[2009-06-23 16:43:50] z...@php.net
Here are the files that changed between those dates (I have taken out
things that look irrelevant like test files)
RCS file: /repository/ZendEngine2/zend_builtin_functions.c,v
date: 2008/06/25 22:37:14; author: felipe; state: Exp; lines: +2 -2
date: 2008/06/25 22:35:31; author: felipe; state: Exp; lines: +1 -2
RCS file: /repository/php-src/ext/reflection/php_reflection.c,v
date: 2008/06/25 12:34:14; author: dmitry; state: Exp; lines: +152
-2
date: 2008/06/25 12:33:46; author: dmitry; state: Exp; lines: +128
-2
RCS file: /repository/php-src/ext/standard/formatted_print.c,v
date: 2008/06/25 10:16:52; author: davidc; state: Exp; lines: +21
-25
date: 2008/06/25 08:56:42; author: davidc; state: Exp; lines: +12
-4
RCS file: /repository/php-src/ext/standard/string.c,v
date: 2008/06/25 12:16:16; author: ohill; state: Exp; lines: +251
-328
RCS file: /repository/php-src/main/main.c,v
date: 2008/06/25 12:18:51; author: dmitry; state: Exp; lines: +3 -1
date: 2008/06/25 12:18:21; author: dmitry; state: Exp; lines: +3 -1
date: 2008/06/25 12:18:36; author: dmitry; state: Exp; lines: +3 -1
RCS file: /repository/php-src/main/php_ticks.c,v
date: 2008/06/25 12:18:51; author: dmitry; state: Exp; lines: +6 -1
date: 2008/06/25 12:18:22; author: dmitry; state: Exp; lines: +6 -1
date: 2008/06/25 12:18:36; author: dmitry; state: Exp; lines: +6 -1
RCS file: /repository/php-src/main/php_ticks.h,v
date: 2008/06/25 12:18:51; author: dmitry; state: Exp; lines: +2 -1
date: 2008/06/25 12:18:22; author: dmitry; state: Exp; lines: +2 -1
The most likely candidates seem to be string.c and builtin_functions
and it looks as though it is changes to parameter parsing that cause the
problem. At this point I think we have done as much as we can to narrow
this down. I'm changing this to Scripting engine as it clearly isn't an
SPL issue.
------------------------------------------------------------------------
[2009-06-23 15:39:27] z...@php.net
A checkout of PHP53 from the 25th June 2008 does *not* have the
problem
A checkout of PHP53 from the 26th June 2008 *does* have the problem
------------------------------------------------------------------------
[2009-06-23 14:13:37] robin_fernandes at uk dot ibm dot com
Testcase below shows that the issue relates to an implicit cast to
string on an SplFileInfo object when retrieved from a
RecursiveDirectoryIterator during iteration.
<?php
$rdi = new RecursiveDirectoryIterator('/manyFiles');
echo "SplFileInfo explicit cast to string: ";
foreach ($rdi as $v) { strlen((string)$v); } //OK
echo memory_get_usage(true) . PHP_EOL;
echo "SplFileInfo implicit cast to string: ";
foreach ($rdi as $v) { strlen($v); } //Leaky
echo memory_get_usage(true) . PHP_EOL;
?>
php52:
SplFileInfo explicit cast to string: 262144
SplFileInfo implicit cast to string: 262144
php53:
SplFileInfo explicit cast to string: 524288
SplFileInfo implicit cast to string: 6291456
------------------------------------------------------------------------
[2009-06-23 13:02:34] z...@php.net
Looking backwards through PHP builds I have currently narrowed this
down to a change that went in to PHP 5.3 somewhere between the 12th June
2008 and the 1st July 2008.
------------------------------------------------------------------------
The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at
http://bugs.php.net/48643
--
Edit this bug report at http://bugs.php.net/?id=48643&edit=1
