Fix ecma_get_property_descriptor_from_property for accessor properties with [[Get]] / [[Set]] set to undefined value

JerryScript-DCO-1.0-Signed-off-by: Kristof Kosztyo kkosztyo.u-szeged@partner.samsung.com

jerry-core/ecma/base/ecma-helpers.cpp

@@ -1293,25 +1293,18 @@ ecma_get_property_descriptor_from_property (ecma_property_t *prop_p) /**< proper
   else if (prop_p->type == ECMA_PROPERTY_NAMEDACCESSOR)
   {
     prop_desc.get_p = ecma_get_named_accessor_property_getter (prop_p);
+    prop_desc.is_get_defined = true;
     if (prop_desc.get_p != NULL)
     {
-      prop_desc.is_get_defined = true;
       ecma_ref_object (prop_desc.get_p);
     }
-    else
-    {
-      prop_desc.is_get_defined = false;
-    }
+
     prop_desc.set_p = ecma_get_named_accessor_property_setter (prop_p);
+    prop_desc.is_set_defined = true;
     if (prop_desc.set_p != NULL)
     {
-      prop_desc.is_set_defined = true;
       ecma_ref_object (prop_desc.set_p);
     }
-    else
-    {
-      prop_desc.is_set_defined = false;
-    }
   }
 
   return prop_desc;

tests/jerry/object-defineproperty.js

@@ -37,4 +37,21 @@ try {
     var desc = Object.getOwnPropertyDescriptor (obj, "prop");
     assert (desc.value === 2010);
     assert (typeof (desc.get) === 'undefined');
-}
+}
+
+obj = {};
+var setter = function () {};
+
+Object.defineProperty(obj, "prop", {
+    set: setter,
+    configurable: true
+});
+
+var desc1 = Object.getOwnPropertyDescriptor(obj, "prop");
+
+Object.defineProperty(obj, "prop", {
+    set: undefined
+});
+
+var desc2 = Object.getOwnPropertyDescriptor(obj, "prop");
+assert (desc1.set === setter && desc2.set === undefined);