From: Marcus Boerger <helly@php.net>
Date: Thu, 11 Dec 2003 09:52:33 +0000 (+0000)
Subject: read_dimension() handler might return 0, handle this.
X-Git-Tag: php-5.0.0b3RC1~134
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b8afd8343a9fb9423d98674a3864e06943d82685;p=php

read_dimension() handler might return 0, handle this.
---

diff --git a/Zend/zend_execute.c b/Zend/zend_execute.c
index bf50c4eaa8..848fab4c17 100644
--- a/Zend/zend_execute.c
+++ b/Zend/zend_execute.c
@@ -930,12 +930,16 @@ static void zend_fetch_dimension_address(znode *result, znode *op1, znode *op2,
 				} else {
 					zval *dim = get_zval_ptr(op2, Ts, &EG(free_op2), BP_VAR_R);
 					zval *overloaded_result = Z_OBJ_HT_P(container)->read_dimension(container, dim TSRMLS_CC);
-					 
-					if (type == BP_VAR_RW && !overloaded_result->is_ref) {
-						zend_error(E_ERROR, "Objects used as arrays in post/pre increment/decrement must return values by reference");
-					}
 
-					*retval = &overloaded_result;
+					if (overloaded_result) {
+						if (type == BP_VAR_RW && !overloaded_result->is_ref) {
+							zend_error(E_ERROR, "Objects used as arrays in post/pre increment/decrement must return values by reference");
+						}
+	
+						*retval = &overloaded_result;
+					} else {
+						*retval = &EG(error_zval_ptr);
+					}
 					AI_USE_PTR(T(result->u.var).var);
 					FREE_OP(Ts, op2, EG(free_op2));
 					SELECTIVE_PZVAL_LOCK(**retval, result);