Index: src/v8natives.js |
diff --git a/src/v8natives.js b/src/v8natives.js |
index b051a044b4c532f835a2bdd16ee96c04d4236eab..778607633382183a66cf2661303e3399513b04f0 100644 |
--- a/src/v8natives.js |
+++ b/src/v8natives.js |
@@ -193,8 +193,8 @@ function ObjectHasOwnProperty(value) { |
// ECMA-262 - 15.2.4.6 |
function ObjectIsPrototypeOf(V) { |
if (!IS_SPEC_OBJECT(V)) return false; |
- CHECK_OBJECT_COERCIBLE(this, "Object.prototype.isPrototypeOf"); |
- return %IsInPrototypeChain(this, V); |
+ var O = TO_OBJECT(this); |
+ return %_HasInPrototypeChain(V, O); |
} |