Fix 32-bit build.

runtime/vm/precompiler.cc

 // Copyright (c) 2015, 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/precompiler.h"
 
 #include "vm/compiler.h"
 #include "vm/isolate.h"
 #include "vm/longjump.h"
 #include "vm/object.h"
@@ skipping 480 matching lines @@
 
 
 void Precompiler::AddClass(const Class& cls) {
   if (cls.is_allocated()) return;
 
   class_count_++;
   cls.set_is_allocated();
   changed_ = true;
 
   if (FLAG_trace_precompiler) {
-    OS::Print("Allocation %ld %s\n", class_count_, cls.ToCString());
+    OS::Print("Allocation %" Pd " %s\n", class_count_, cls.ToCString());
   }
 
   const Class& superclass = Class::Handle(cls.SuperClass());
   if (!superclass.IsNull()) {
     AddClass(superclass);
   }
 }
 
 
 void Precompiler::CheckForNewDynamicFunctions() {
@@ skipping 73 matching lines @@
             function = function.ImplicitClosureFunction();
             AddFunction(function);
           }
         }
       }
     }
   }
 }
 
 }  // namespace dart