[VM] Make us compile with debug-optimization-level=0 again

runtime/vm/service.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/service.h"
 
 #include "include/dart_api.h"
 #include "include/dart_native_api.h"
 #include "platform/globals.h"
 
@@ skipping 2541 matching lines @@
 static const MethodParameter* reload_sources_params[] = {
     RUNNABLE_ISOLATE_PARAMETER,
     new BoolParameter("force", false),
     new BoolParameter("pause", false),
     new StringParameter("rootLibUri", false),
     new StringParameter("packagesUri", false),
     NULL,
 };
 
 static bool ReloadSources(Thread* thread, JSONStream* js) {
+#if !defined(DART_PRECOMPILED_RUNTIME)
   Isolate* isolate = thread->isolate();
   if (!isolate->compilation_allowed()) {
     js->PrintError(kFeatureDisabled,
                    "Cannot reload source when running a precompiled program.");
     return true;
   }
   Dart_LibraryTagHandler handler = isolate->library_tag_handler();
   if (handler == NULL) {
     js->PrintError(kFeatureDisabled,
                    "A library tag handler must be installed.");
@@ skipping 17 matching lines @@
   }
   const bool force_reload =
       BoolParameter::Parse(js->LookupParam("force"), false);
 
   isolate->ReloadSources(js, force_reload, js->LookupParam("rootLibUri"),
                          js->LookupParam("packagesUri"));
 
   Service::CheckForPause(isolate, js);
 
   return true;
+#else   // !defined(DART_PRECOMPILED_RUNTIME)
+  js->PrintError(kFeatureDisabled,
+                 "This isolate cannot reload sources right now.");
+  return true;
+#endif  // !defined(DART_PRECOMPILED_RUNTIME)
 }
 
 void Service::CheckForPause(Isolate* isolate, JSONStream* stream) {
   // Should we pause?
   isolate->set_should_pause_post_service_request(
       BoolParameter::Parse(stream->LookupParam("pause"), false));
 }
 
 RawError* Service::MaybePause(Isolate* isolate, const Error& error) {
   // Don't pause twice.
@@ skipping 1591 matching lines @@
     if (strcmp(method_name, method.name) == 0) {
       return &method;
     }
   }
   return NULL;
 }
 
 #endif  // !PRODUCT
 
 }  // namespace dart