Experimental lexer: unbreak lexer_shell.

src/lexer/lexer-shell.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 474 matching lines @@
     v8::Handle<v8::ObjectTemplate> global = v8::ObjectTemplate::New();
     v8::Local<v8::Context> context = v8::Context::New(isolate, NULL, global);
     ASSERT(!context.IsEmpty());
     {
       v8::Context::Scope scope(context);
       Isolate* internal_isolate = Isolate::Current();
       double baseline_total = 0, experimental_total = 0;
       for (size_t i = 0; i < fnames.size(); i++) {
         std::pair<TimeDelta, TimeDelta> times;
         bool can_truncate = eos_test;
-        for (int truncate_by = 0; can_truncate; ++truncate_by) {
+        int truncate_by = 0;
+        do {
           times = ProcessFile(fnames[i].c_str(),
                               encoding,
                               internal_isolate,
                               run_baseline,
                               run_experimental,
                               print_tokens,
                               check_tokens,
                               break_after_illegal,
                               repeat,
                               harmony_settings,
                               truncate_by,
                               &can_truncate);
           baseline_total += times.first.InMillisecondsF();
           experimental_total += times.second.InMillisecondsF();
-        }
+          ++truncate_by;
+        } while (can_truncate);
       }
       if (run_baseline) {
         printf("Baseline%s(RunTime): %.f ms\n", benchmark.c_str(),
                baseline_total);
       }
       if (run_experimental) {
         if (benchmark.empty()) benchmark = "Experimental";
         printf("%s(RunTime): %.f ms\n", benchmark.c_str(),
                experimental_total);
       }
     }
   }
   v8::V8::Dispose();
   return 0;
 }