Only enable dot printing in debug mode

test/cctest/test-regexp.cc

 // Copyright 2006-2008 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 319 matching lines @@
 static void Execute(const char* input,
                     const char* str,
                     bool dot_output = false) {
   v8::HandleScope scope;
   unibrow::Utf8InputBuffer<> buffer(input, strlen(input));
   ZoneScope zone_scope(DELETE_ON_EXIT);
   RegExpParseResult result;
   if (!v8::internal::ParseRegExp(&buffer, &result))
     return;
   RegExpNode* node = RegExpEngine::Compile(&result);
+  USE(node);
+#ifdef DEBUG
   if (dot_output) {
     RegExpEngine::DotPrint(input, node);
     exit(0);
   }
+#endif // DEBUG
 }
 
 
 TEST(Execution) {
   V8::Initialize(NULL);
   Execute(".*?(?:a[bc]d|e[fg]h)", "xxxabbegh");
   Execute(".*?(?:a[bc]d|e[fg]h)", "xxxabbefh");
   Execute(".*?(?:a[bc]d|e[fg]h)", "xxxabbefd");
 }
 
@@ skipping 248 matching lines @@
 
   Handle<String> f5 =
       Factory::NewStringFromAscii(CStrVector("walking\nbarefoot"));
   CHECK(!Re2kInterpreter::Match(*array, *f5, captures, 0));
 }
 
 
 TEST(Graph) {
   Execute("(a|b|c|\\w|\\s)", "", true);
 }