Fix more co19 crashes. Introduce GET_NATIVE_ARGUMENT that throws an illegal argument exception if...

runtime/lib/error.cc

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "lib/error.h"
 
 #include "vm/bootstrap_natives.h"
 #include "vm/exceptions.h"
 #include "vm/object_store.h"
 #include "vm/runtime_entry.h"
@@ skipping 138 matching lines @@
   // Throw TypeError instance.
   Exceptions::Throw(type_error);
   UNREACHABLE();
 }
 
 
 // Allocate and throw a new FallThroughError.
 // Arg0: index of the case clause token into which we fall through.
 // Return value: none, throws an exception.
 DEFINE_NATIVE_ENTRY(FallThroughError_throwNew, 1) {
-  intptr_t fallthrough_pos = Smi::CheckedHandle(arguments->At(0)).Value();
+  GET_NATIVE_ARGUMENT(Smi, smi_pos, arguments->At(0));
+  intptr_t fallthrough_pos = smi_pos.Value();
 
   // Allocate a new instance of type FallThroughError.
   const Instance& fallthrough_error =
       Instance::Handle(NewInstance("FallThroughError"));
   ASSERT(!fallthrough_error.IsNull());
 
   // Initialize 'url' and 'line' fields.
   DartFrameIterator iterator;
   iterator.NextFrame();  // Skip native call.
   const Script& script = Script::Handle(GetCallerScript(&iterator));
@@ skipping 108 matching lines @@
         dst_type_name = element_type.Name();
       }
       const String& dst_name = String::Handle(String::New(buf));
       ThrowTypeError(location, src_type_name, dst_type_name, dst_name);
       UNREACHABLE();
     }
   }
 }
 
 }  // namespace dart