Disable generating of code cache if the debugger is loaded

src/compiler.cc

Index: src/compiler.cc
diff --git a/src/compiler.cc b/src/compiler.cc
index 546ac887421ab2e10f251ec038d98f049dc37755..6a8ca7cb3f550a32a46b5bac265d08c78a31dab4 100644
--- a/src/compiler.cc
+++ b/src/compiler.cc
@@ -1261,19 +1261,20 @@ Handle<SharedFunctionInfo> Compiler::CompileScript(
     int column_offset, bool is_shared_cross_origin, Handle<Context> context,
     v8::Extension* extension, ScriptData** cached_data,
     ScriptCompiler::CompileOptions compile_options, NativesFlag natives) {
+  Isolate* isolate = source->GetIsolate();
   if (compile_options == ScriptCompiler::kNoCompileOptions) {
     cached_data = NULL;
   } else if (compile_options == ScriptCompiler::kProduceParserCache ||
              compile_options == ScriptCompiler::kProduceCodeCache) {
     DCHECK(cached_data && !*cached_data);
     DCHECK(extension == NULL);
+    DCHECK(!isolate->debug()->is_loaded());
   } else {
     DCHECK(compile_options == ScriptCompiler::kConsumeParserCache ||
            compile_options == ScriptCompiler::kConsumeCodeCache);
     DCHECK(cached_data && *cached_data);
     DCHECK(extension == NULL);
   }
-  Isolate* isolate = source->GetIsolate();
   int source_length = source->length();
   isolate->counters()->total_load_size()->Increment(source_length);
   isolate->counters()->total_compile_size()->Increment(source_length);