- Fix compilation errors. Apparently clang != clang everywhere.

runtime/vm/gc_marker.cc

 // Copyright (c) 2011, 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/gc_marker.h"
 
 #include <map>
 #include <utility>
 
 #include "vm/allocation.h"
@@ skipping 362 matching lines @@
     // Key is white.  Delay the weak property.
     visitor->DelayWeakProperty(raw_weak);
   } else {
     // Key is gray or black.  Make the weak property black.
     raw_weak->VisitPointers(visitor);
   }
 }
 
 
 void GCMarker::ProcessWeakTables(PageSpace* page_space) {
-  for (Heap::WeakSelector sel = static_cast<Heap::WeakSelector>(0);
+  for (int sel = 0;
        sel < Heap::kNumWeakSelectors;
        sel++) {
-    WeakTable* table = heap_->GetWeakTable(Heap::kOld, sel);
+    WeakTable* table = heap_->GetWeakTable(
+        Heap::kOld, static_cast<Heap::WeakSelector>(sel));
     intptr_t size = table->size();
     for (intptr_t i = 0; i < size; i++) {
       if (table->IsValidEntryAt(i)) {
         RawObject* raw_obj = table->ObjectAt(i);
         ASSERT(raw_obj->IsHeapObject());
         if (!raw_obj->IsMarked()) {
           table->InvalidateAt(i);
         }
       }
     }
@@ skipping 11 matching lines @@
   DrainMarkingStack(isolate, &mark);
   IterateWeakReferences(isolate, &mark);
   MarkingWeakVisitor mark_weak;
   IterateWeakRoots(isolate, &mark_weak, invoke_api_callbacks);
   mark.Finalize();
   ProcessWeakTables(page_space);
   Epilogue(isolate, invoke_api_callbacks);
 }
 
 }  // namespace dart