From c9712699ca7ec8c04afa3cb70afebf4ee146d105 Mon Sep 17 00:00:00 2001
From: Lars Knoll <lars.knoll@qt.io>
Date: Sun, 12 Aug 2018 23:51:14 +0200
Subject: Implement TypedArray.prototype.copyWithin

Change-Id: If0d33cc40e79d0609ad205cfe5a08d2266403867
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
---
 src/qml/jsruntime/qv4arrayobject.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/qml/jsruntime/qv4arrayobject.cpp')

diff --git a/src/qml/jsruntime/qv4arrayobject.cpp b/src/qml/jsruntime/qv4arrayobject.cpp
index 450916fbf7..544be06664 100644
--- a/src/qml/jsruntime/qv4arrayobject.cpp
+++ b/src/qml/jsruntime/qv4arrayobject.cpp
@@ -432,7 +432,7 @@ ReturnedValue ArrayPrototype::method_copyWithin(const FunctionObject *b, const V
 
     double len = instance->getLength();
     double target = argv[0].toInteger();
-    double start = argv[1].toInteger();
+    double start = argc > 1 ? argv[1].toInteger() : 0;
     double end = len;
 
     if (argc > 2 && !argv[2].isUndefined()) {
-- 
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