Introduce a flag --limit-ints-to-64-bits in the VM in order to investigate the

runtime/vm/exceptions.h

 // 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.
 
 #ifndef RUNTIME_VM_EXCEPTIONS_H_
 #define RUNTIME_VM_EXCEPTIONS_H_
 
 #include "vm/allocation.h"
 #include "vm/token_position.h"
 
@@ skipping 28 matching lines @@
   static RawInstance* NewInstance(const char* class_name);
   static void CreateAndThrowTypeError(TokenPosition location,
                                       const AbstractType& src_type,
                                       const AbstractType& dst_type,
                                       const String& dst_name,
                                       const String& bound_error_msg);
 
   enum ExceptionType {
     kNone,
     kRange,
+    kRangeMsg,
     kArgument,
     kArgumentValue,
     kNoSuchMethod,
     kFormat,
     kUnsupported,
     kStackOverflow,
     kOutOfMemory,
     kNullThrown,
     kIsolateSpawn,
     kAssertion,
     kCast,
     kType,
     kFallThrough,
     kAbstractClassInstantiation,
     kCyclicInitializationError,
     kCompileTimeError,
   };
 
   static void ThrowByType(ExceptionType type, const Array& arguments);
   // Uses the preallocated out of memory exception to avoid calling
   // into Dart code or allocating any code.
   static void ThrowOOM();
   static void ThrowStackOverflow();
   static void ThrowArgumentError(const Instance& arg);
   static void ThrowRangeError(const char* argument_name,
                               const Integer& argument_value,
                               intptr_t expected_from,
                               intptr_t expected_to);
+  static void ThrowRangeErrorMsg(const char* msg);
   static void ThrowCompileTimeError(const LanguageError& error);
 
   // Returns a RawInstance if the exception is successfully created,
   // otherwise returns a RawError.
   static RawObject* Create(ExceptionType type, const Array& arguments);
 
   static void JumpToFrame(Thread* thread,
                           uword program_counter,
                           uword stack_pointer,
                           uword frame_pointer,
                           bool clear_deopt_at_target);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(Exceptions);
 };
 
 // The index into the ExceptionHandlers table corresponds to
 // the try_index of the handler.
 struct ExceptionHandlerInfo {
   uint32_t handler_pc_offset;  // PC offset value of handler.
   int16_t outer_try_index;     // Try block index of enclosing try block.
   int8_t needs_stacktrace;     // True if a stacktrace is needed.
   int8_t has_catch_all;        // Catches all exceptions.
 };
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_EXCEPTIONS_H_