Associate the correct type to method receivers (instead of Dynamic type).

runtime/vm/unit_test.cc

Index: runtime/vm/unit_test.cc
===================================================================
--- runtime/vm/unit_test.cc	(revision 10199)
+++ runtime/vm/unit_test.cc	(working copy)
@@ -141,9 +141,11 @@
 
 uword AssemblerTest::Assemble() {
   const String& function_name = String::ZoneHandle(Symbols::New(name_));
+  const Class& cls = Class::ZoneHandle(
+       Class::New(function_name, Script::Handle(), Scanner::kDummyTokenIndex));
   Function& function = Function::ZoneHandle(
       Function::New(function_name, RawFunction::kRegularFunction,
-                    true, false, false, false, 0));
+                    true, false, false, false, cls, 0));
   const Code& code = Code::Handle(Code::FinalizeCode(function, assembler_));
   if (FLAG_disassemble) {
     OS::Print("Code for test '%s' {\n", name_);
@@ -165,15 +167,14 @@
     default_parameter_values_(Array::ZoneHandle()) {
   ASSERT(name != NULL);
   const String& function_name = String::ZoneHandle(Symbols::New(name));
+  // Add function to a class and that class to the class dictionary so that
+  // frame walking can be used.
+  const Class& cls = Class::ZoneHandle(
+       Class::New(function_name, Script::Handle(), Scanner::kDummyTokenIndex));
   function_ = Function::New(
       function_name, RawFunction::kRegularFunction,
-      true, false, false, false, 0);
+      true, false, false, false, cls, 0);
   function_.set_result_type(Type::Handle(Type::DynamicType()));
-  // Add function to a class and that class to the class dictionary so that
-  // frame walking can be used.
-  Class& cls = Class::ZoneHandle();
-  const Script& script = Script::Handle();
-  cls = Class::New(function_name, script, Scanner::kDummyTokenIndex);
   const Array& functions = Array::Handle(Array::New(1));
   functions.SetAt(0, function_);
   cls.SetFunctions(functions);