1 files changed, 15 insertions, 0 deletions
diff --git a/src/qml/jsruntime/qv4value_p.h b/src/qml/jsruntime/qv4value_p.h
index e59ab9af0b..816b8fb11b 100644
--- a/src/qml/jsruntime/qv4value_p.h
+++ b/src/qml/jsruntime/qv4value_p.h
@@ -453,6 +453,7 @@ public:
     }
 
     inline uint asArrayIndex() const;
+    inline bool asArrayIndex(uint &idx) const;
 #ifndef V4_BOOTSTRAP
     uint asArrayLength(bool *ok) const;
 #endif
@@ -531,6 +532,20 @@ inline uint Value::asArrayIndex() const
         return UINT_MAX;
     return idx;
 }
+
+inline bool Value::asArrayIndex(uint &idx) const
+{
+    if (!isDouble()) {
+        if (isInteger() && int_32() >= 0) {
+            idx = (uint)int_32();
+            return true;
+        }
+        return false;
+    }
+    double d = doubleValue();
+    idx = (uint)d;
+    return (idx == d);
+}
 #endif
 
 inline