Disable guessing 'other' cid; this prevents an issue in range analysis. It is not clear if guessing…

runtime/vm/compiler.h

 // Copyright (c) 2012, 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 VM_COMPILER_H_
 #define VM_COMPILER_H_
 
 #include "vm/allocation.h"
 #include "vm/growable_array.h"
 #include "vm/runtime_entry.h"
@@ skipping 72 matching lines @@
   static RawError* CompileAllFunctions(const Class& cls);
 
   // The following global flags are changed by --noopt handler;
   // the flags are changed when generating best unoptimized code (no runtime
   // feedback, no deoptimization).
 
   // Default: false.
   static bool always_optimize() { return always_optimize_; }
   static void set_always_optimize(bool value) { always_optimize_ = value; }
 
-  // Default: true.
-  static bool guess_other_cid() { return guess_other_cid_; }
-  static void set_guess_other_cid(bool value) { guess_other_cid_ = value; }
-
  private:
   static bool always_optimize_;
-  static bool guess_other_cid_;
 };
 
 }  // namespace dart
 
 #endif  // VM_COMPILER_H_