Throw a type error if defaultValue doesn't lead to a primitive type

As specified in 8.12.8, we need to throw a type error if calling
[[defaultValue]] on an object doesn't convert to a primitive
type.

Change-Id: I6b5db91a36a21c6037998efb15646d00d49b5d4c
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/qmljs_runtime.cpp b/qmljs_runtime.cpp
index 4c200b251f..55258fd06d 100644
--- a/qmljs_runtime.cpp
+++ b/qmljs_runtime.cpp
@@ -509,6 +509,7 @@ Value __qmljs_object_default_value(ExecutionContext *ctx, Value object, int type
             return r;
     }
 
+    ctx->throwTypeError();
     return Value::undefinedValue();
 }