Index: test/mjsunit/fast-prototype.js |
diff --git a/test/mjsunit/fast-prototype.js b/test/mjsunit/fast-prototype.js |
index 55a0faae805341b16804deeef6e53e7a49dfc1cd..98647612f6ddcc5b1ed1d1caa82c81b5ac718d4a 100644 |
--- a/test/mjsunit/fast-prototype.js |
+++ b/test/mjsunit/fast-prototype.js |
@@ -50,6 +50,8 @@ function DoProtoMagic(proto, set__proto__) { |
(new Sub()).__proto__ = proto; |
} else { |
Sub.prototype = proto; |
+ // Need to instantiate Sub to mark .prototype as prototype. |
+ new Sub(); |
} |
} |