Enable --verify-heap in release mode

test/cctest/test-weakmaps.cc

 // Copyright 2011 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 175 matching lines @@
   // Force compacting garbage collection.
   CHECK(FLAG_always_compact);
   HEAP->CollectAllGarbage(Heap::kNoGCFlags);
 }
 
 
 // Test that weak map keys on an evacuation candidate which are reachable by
 // other strong paths are correctly recorded in the slots buffer.
 TEST(Regress2060b) {
   FLAG_always_compact = true;
-#ifdef DEBUG
+#ifdef VERIFY_HEAP
   FLAG_verify_heap = true;
 #endif
+
   LocalContext context;
   v8::HandleScope scope;
   Handle<JSFunction> function =
       FACTORY->NewFunction(FACTORY->function_symbol(), FACTORY->null_value());
 
   // Start second old-space page so that keys land on evacuation candidate.
   Page* first_page = HEAP->old_pointer_space()->anchor()->next_page();
   FACTORY->NewFixedArray(900 * KB / kPointerSize, TENURED);
 
   // Fill up weak map with keys on an evacuation candidate.
   Handle<JSObject> keys[32];
   for (int i = 0; i < 32; i++) {
     keys[i] = FACTORY->NewJSObject(function, TENURED);
     CHECK(!HEAP->InNewSpace(keys[i]->address()));
     CHECK(!first_page->Contains(keys[i]->address()));
   }
   Handle<JSWeakMap> weakmap = AllocateJSWeakMap();
   for (int i = 0; i < 32; i++) {
     PutIntoWeakMap(weakmap, keys[i], Handle<Smi>(Smi::FromInt(i)));
   }
 
   // Force compacting garbage collection. The subsequent collections are used
   // to verify that key references were actually updated.
   CHECK(FLAG_always_compact);
   HEAP->CollectAllGarbage(Heap::kNoGCFlags);
   HEAP->CollectAllGarbage(Heap::kNoGCFlags);
   HEAP->CollectAllGarbage(Heap::kNoGCFlags);
 }