[VM, Precompiler] PoC Obfuscator

runtime/vm/class_finalizer.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/class_finalizer.h"
 
 #include "vm/flags.h"
 #include "vm/hash_table.h"
 #include "vm/heap.h"
 #include "vm/isolate.h"
@@ skipping 3447 matching lines @@
   va_list args;
   va_start(args, format);
   const Script& script = Script::Handle(cls.script());
   Report::MessageV(Report::kError, script, token_pos, Report::AtLocation,
                    format, args);
   va_end(args);
   UNREACHABLE();
 }
 
 void ClassFinalizer::VerifyImplicitFieldOffsets() {
+  return;

[rmacnak, 2017/08/23 01:16:50]

if (isolate->flags->obfuscate) return;

[Vyacheslav Egorov (Google), 2017/08/23 15:54:52]

Done.

 #ifdef DEBUG
   Thread* thread = Thread::Current();
   Isolate* isolate = thread->isolate();
   Zone* zone = thread->zone();
   const ClassTable& class_table = *(isolate->class_table());
   Class& cls = Class::Handle(zone);
   Array& fields_array = Array::Handle(zone);
   Field& field = Field::Handle(zone);
   String& name = String::Handle(zone);
   String& expected_name = String::Handle(zone);
@@ skipping 314 matching lines @@
   ProgramVisitor::VisitFunctions(&function_visitor);
 
   class ClearCodeClassVisitor : public ClassVisitor {
     void Visit(const Class& cls) { cls.DisableAllocationStub(); }
   };
   ClearCodeClassVisitor class_visitor;
   ProgramVisitor::VisitClasses(&class_visitor);
 }
 
 }  // namespace dart