It probably makes sense to add SEPARATE_ZVAL_IF_NOT_REF() to that code. This would provide the same behavior as for example for long's.
Can you please check out the following patch?


Index: zend_API.c
===================================================================
RCS file: /repository/ZendEngine2/zend_API.c,v
retrieving revision 1.257
diff -u -r1.257 zend_API.c
--- zend_API.c 24 Aug 2004 18:47:18 -0000 1.257
+++ zend_API.c 4 Sep 2004 01:17:19 -0000
@@ -318,6 +318,7 @@
case IS_OBJECT: {
if (Z_OBJ_HANDLER_PP(arg, cast_object)
&& Z_OBJ_HANDLER_PP(arg, cast_object)(*arg, *arg, IS_STRING, 0 TSRMLS_CC) == SUCCESS) {
+ SEPARATE_ZVAL_IF_NOT_REF(arg);
*pl = Z_STRLEN_PP(arg);
*p = Z_STRVAL_PP(arg);
break;



At 10:43 AM 9/2/2004 -0700, Andrei Zmievski wrote:
On Thu, 02 Sep 2004, Curt Zirzow wrote:
> Test 1: ($file holds last type conversion)
> <?php
> foreach (new DirectoryIterator('.') as $file) {
>     echo "\n--\n";
>     var_dump($file);
>     preg_match("/xxx/", $file);
>     var_dump($file);
>     echo "\n--";
> }
>
> Output:
> Object(DirectoryIterator)#1 (0) {
> }
> string(1) "."
> --
> --
> string(1) "."
> string(1) "."
> --
> ...

The culprit is this piece of code in zend_parse_arg_impl():

case IS_OBJECT: {
if (Z_OBJ_HANDLER_PP(arg, cast_object)
&& Z_OBJ_HANDLER_PP(arg, cast_object)(*arg, *arg, IS_STRING, 0 TSRMLS_CC) == SUCCESS) {
*pl = Z_STRLEN_PP(arg);
*p = Z_STRVAL_PP(arg);
break;
}


The cast_object handler overwrites the value in *arg and that's why the
original variable changes type. I think Andi made this change on Dec 02,
2003. I can see the rationale behind not using a new var for the
conversion, because then we have to keep track of it and release it
somehow, but changing variable types is not good either. Andi, any
suggestions?

- Andrei

-- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: http://www.php.net/unsub.php



Reply via email to