From: Dmitry Volyntsev <xeioex@nginx.com>
Date: Tue, 20 Jun 2017 14:12:44 +0000 (+0300)
Subject: Fixed Object.prototype.isPrototypeOf() without arguments.
X-Git-Tag: 0.1.11~7
X-Git-Url: http://www.kaiwu.me/postgresql/commit/?a=commitdiff_plain;h=38cbb8b0deea85f3590178b0c8640ac37ec4de7a;p=njs.git

Fixed Object.prototype.isPrototypeOf() without arguments.
---

diff --git a/njs/njs_object.c b/njs/njs_object.c
index dcad7939..caf7bb41 100644
--- a/njs/njs_object.c
+++ b/njs/njs_object.c
@@ -1413,7 +1413,7 @@ njs_object_prototype_is_prototype_of(njs_vm_t *vm, njs_value_t *args,
 
     retval = &njs_string_false;
 
-    if (njs_is_object(&args[0]) && njs_is_object(&args[1])) {
+    if (nargs > 1 && njs_is_object(&args[0]) && njs_is_object(&args[1])) {
         proto = args[0].data.u.object;
         object = args[1].data.u.object;
 
diff --git a/njs/test/njs_unit_test.c b/njs/test/njs_unit_test.c
index 7055c9cd..6a0960a9 100644
--- a/njs/test/njs_unit_test.c
+++ b/njs/test/njs_unit_test.c
@@ -6030,6 +6030,9 @@ static njs_unit_test_t  njs_test[] =
                  "o.isPrototypeOf()"),
       nxt_string("false") },
 
+    { nxt_string("Object.valueOf.isPrototypeOf()"),
+      nxt_string("false") },
+
     { nxt_string("var p = {}; var o = Object.create(p);"
                  "o.isPrototypeOf(1)"),
       nxt_string("false") },