Fix bug #49263 (Offset error when unserializing self-references in SplObjectStorage)

2 files changed, 55 insertions, 1 deletions

diff --git a/ext/spl/spl_observer.c b/ext/spl/spl_observer.c
index b3f2e5531e..1ec3771862 100755
--- a/ext/spl/spl_observer.c
+++ b/ext/spl/spl_observer.c
@@ -625,7 +625,7 @@ SPL_METHOD(SplObjectStorage, unserialize)
 	++p;
 
 	ALLOC_INIT_ZVAL(pcount);
-	if (!php_var_unserialize(&pcount, &p, s + buf_len, &var_hash TSRMLS_CC) || Z_TYPE_P(pcount) != IS_LONG) {
+	if (!php_var_unserialize(&pcount, &p, s + buf_len, NULL TSRMLS_CC) || Z_TYPE_P(pcount) != IS_LONG) {
 		zval_ptr_dtor(&pcount);
 		goto outexcept;
 	}
diff --git a/ext/spl/tests/bug49263.phpt b/ext/spl/tests/bug49263.phpt
new file mode 100644
index 0000000000..394fe9c4e7
--- /dev/null
+++ b/ext/spl/tests/bug49263.phpt
@@ -0,0 +1,54 @@
+--TEST--
+SPL: SplObjectStorage serialization references
+--SKIPIF--
+<?php if (!extension_loaded("spl")) print "skip"; ?>
+--FILE--
+<?php
+$o1 = new stdClass;
+$o2 = new stdClass;
+
+$s = new splObjectStorage();
+
+$s->attach($o1, array('prev' => 2, 'next' => $o2));
+$s->attach($o2, array('prev' => $o1));
+
+$ss = serialize($s);
+unset($s,$o1,$o2);
+echo $ss."\n";
+var_dump(unserialize($ss));
+?>
+===DONE===
+--EXPECTF--
+C:16:"SplObjectStorage":113:{x:i:2;O:8:"stdClass":0:{},a:2:{U:4:"prev";i:2;U:4:"next";O:8:"stdClass":0:{}};r:4;,a:1:{U:4:"prev";r:1;};m:a:0:{}}
+object(SplObjectStorage)#2 (1) {
+  [u"storage":u"SplObjectStorage":private]=>
+  array(2) {
+    ["%s"]=>
+    array(2) {
+      ["obj"]=>
+      object(stdClass)#1 (0) {
+      }
+      ["inf"]=>
+      array(2) {
+        [u"prev"]=>
+        int(2)
+        [u"next"]=>
+        object(stdClass)#3 (0) {
+        }
+      }
+    }
+    ["%s"]=>
+    array(2) {
+      ["obj"]=>
+      object(stdClass)#3 (0) {
+      }
+      ["inf"]=>
+      array(1) {
+        [u"prev"]=>
+        object(stdClass)#1 (0) {
+        }
+      }
+    }
+  }
+}
+===DONE===