From cee365dbf009df4b4c702d79a8d20ff7f30d9e86 Mon Sep 17 00:00:00 2001
From: Arnaud Le Blanc <lbarnaud@php.net>
Date: Tue, 9 Sep 2008 19:43:52 +0000
Subject: [PATCH] Fixed bug #46031 (Segfault in AppendIterator::next)

---
 ext/spl/spl_iterators.c     | 3 +++
 ext/spl/tests/bug46031.phpt | 9 +++++++++
 2 files changed, 12 insertions(+)
 create mode 100644 ext/spl/tests/bug46031.phpt

diff --git a/ext/spl/spl_iterators.c b/ext/spl/spl_iterators.c
index ce27ee7d7b..e6bfea8450 100755
--- a/ext/spl/spl_iterators.c
+++ b/ext/spl/spl_iterators.c
@@ -1499,6 +1499,9 @@ static inline void spl_dual_it_rewind(spl_dual_it_object *intern TSRMLS_DC)
 
 static inline int spl_dual_it_valid(spl_dual_it_object *intern TSRMLS_DC)
 {
+	if (!intern->inner.iterator) {
+		return FAILURE;
+	}
 	/* FAILURE / SUCCESS */
 	return intern->inner.iterator->funcs->valid(intern->inner.iterator TSRMLS_CC);
 }
diff --git a/ext/spl/tests/bug46031.phpt b/ext/spl/tests/bug46031.phpt
new file mode 100644
index 0000000000..9261ff0fe6
--- /dev/null
+++ b/ext/spl/tests/bug46031.phpt
@@ -0,0 +1,9 @@
+--TEST--
+Bug #46031 (Segfault in AppendIterator::next)
+--FILE--
+<?php
+$x = new AppendIterator();
+var_dump($x->next());
+?>
+--EXPECT--
+NULL
-- 
2.50.1