From: Dmitry Stogov <dmitry@php.net>
Date: Mon, 6 Dec 2004 11:53:30 +0000 (+0000)
Subject: Fixed bug #30922 (reflective functions crash PHP when interfaces extend themselves)
X-Git-Tag: RELEASE_0_2~569
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=7c83c4e41873c355b5bb0bf73a26208413d3475a;p=php

Fixed bug #30922 (reflective functions crash PHP when interfaces extend themselves)
---

diff --git a/Zend/tests/bug30922.phpt b/Zend/tests/bug30922.phpt
new file mode 100644
index 0000000000..24d79171be
--- /dev/null
+++ b/Zend/tests/bug30922.phpt
@@ -0,0 +1,13 @@
+--TEST--
+Bug #30922 (reflective functions crash PHP when interfaces extend themselves)
+--FILE--
+<?php
+interface RecurisiveFooFar extends RecurisiveFooFar {}
+class A implements RecurisiveFooFar {}
+
+$a = new A();
+var_dump($a instanceOf A);
+echo "ok\n";
+?>
+--EXPECTF--
+Fatal error: Interface RecurisiveFooFar cannot not implement itself in %sbug30922.php on line %d
diff --git a/Zend/zend_compile.c b/Zend/zend_compile.c
index af5ac78f23..e229091ca4 100644
--- a/Zend/zend_compile.c
+++ b/Zend/zend_compile.c
@@ -1997,6 +1997,9 @@ static inline void do_implement_interface(zend_class_entry *ce, zend_class_entry
 	if (!(ce->ce_flags & ZEND_ACC_INTERFACE) && iface->interface_gets_implemented && iface->interface_gets_implemented(iface, ce TSRMLS_CC) == FAILURE) {
 		zend_error(E_CORE_ERROR, "Class %s could not implement interface %s", ce->name, iface->name);
 	}
+	if (ce == iface) {
+		zend_error(E_ERROR, "Interface %s cannot not implement itself", ce->name);
+	}
 }