Added preparser strict-mode tests.

src/preparse-data.cc

 // Copyright 2010 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 56 matching lines @@
   preamble_[PreparseDataConstants::kHasErrorOffset] = true;
   function_store_.Reset();
   STATIC_ASSERT(PreparseDataConstants::kMessageStartPos == 0);
   function_store_.Add(start_pos);
   STATIC_ASSERT(PreparseDataConstants::kMessageEndPos == 1);
   function_store_.Add(end_pos);
   STATIC_ASSERT(PreparseDataConstants::kMessageArgCountPos == 2);
   function_store_.Add((arg_opt == NULL) ? 0 : 1);
   STATIC_ASSERT(PreparseDataConstants::kMessageTextPos == 3);
   WriteString(CStrVector(message));
-  if (arg_opt) WriteString(CStrVector(arg_opt));
+  if (arg_opt != NULL) WriteString(CStrVector(arg_opt));
   is_recording_ = false;
 }
 
 
 void FunctionLoggingParserRecorder::WriteString(Vector<const char> str) {
   function_store_.Add(str.length());
   for (int i = 0; i < str.length(); i++) {
     function_store_.Add(str[i]);
   }
 }
@@ skipping 86 matching lines @@
       symbol_store_.Add(static_cast<byte>(number >> i) | 0x80u);
       number &= mask;
     }
     mask >>= 7;
   }
   symbol_store_.Add(static_cast<byte>(number));
 }
 
 
 } }  // namespace v8::internal.