Make sure that ICData always contains valid data (non-null values).

runtime/vm/flow_graph_compiler_x64.cc

 // Copyright (c) 2013, 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 "vm/globals.h"  // Needed here to get TARGET_ARCH_X64.
 #if defined(TARGET_ARCH_X64)
 
 #include "vm/flow_graph_compiler.h"
 
 #include "lib/error.h"
@@ skipping 992 matching lines @@
       __ cmpq(RCX, RBX);
       __ j(EQUAL, &all_arguments_processed, Assembler::kNearJump);
     }
   }
 
   __ Bind(&wrong_num_arguments);
   if (function.IsClosureFunction()) {
     // Invoke noSuchMethod function passing "call" as the original name.
     const int kNumArgsChecked = 1;
     const ICData& ic_data = ICData::ZoneHandle(
-        ICData::New(function, Symbols::Call(), Object::null_array(),
+        ICData::New(function, Symbols::Call(), Object::empty_array(),
                     Isolate::kNoDeoptId, kNumArgsChecked));
     __ LoadObject(RBX, ic_data);
     __ LeaveFrame();  // The arguments are still on the stack.
     __ jmp(&StubCode::CallNoSuchMethodFunctionLabel());
     // The noSuchMethod call may return to the caller, but not here.
     __ int3();
   } else if (check_correct_named_args) {
     __ Stop("Wrong arguments");
   }
 
@@ skipping 133 matching lines @@
       __ Bind(&wrong_num_arguments);
       if (function.IsClosureFunction()) {
         // Invoke noSuchMethod function passing the original function name.
         // For closure functions, use "call" as the original name.
         const String& name =
             String::Handle(function.IsClosureFunction()
                              ? Symbols::Call().raw()
                              : function.name());
         const int kNumArgsChecked = 1;
         const ICData& ic_data = ICData::ZoneHandle(
-            ICData::New(function, name, Object::null_array(),
+            ICData::New(function, name, Object::empty_array(),
                         Isolate::kNoDeoptId, kNumArgsChecked));
         __ LoadObject(RBX, ic_data);
         __ LeaveFrame();  // The arguments are still on the stack.
         __ jmp(&StubCode::CallNoSuchMethodFunctionLabel());
         // The noSuchMethod call may return to the caller, but not here.
         __ int3();
       } else {
         __ Stop("Wrong number of arguments");
       }
       __ Bind(&correct_num_arguments);
@@ skipping 708 matching lines @@
   __ movups(reg, Address(RSP, 0));
   __ addq(RSP, Immediate(kFpuRegisterSize));
 }
 
 
 #undef __
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_X64