Ensure that executable pages are properly guarded.

test/cctest/test-heap.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 
 #include <stdlib.h>
 
 #include "v8.h"
 
 #include "execution.h"
 #include "factory.h"
 #include "macro-assembler.h"
 #include "global-handles.h"
@@ skipping 802 matching lines @@
   objs[next_objs_index++] = FACTORY->NewJSArray(10);
   objs[next_objs_index++] = FACTORY->NewJSArray(10, FAST_ELEMENTS, TENURED);
 
   // Allocate a small string to OLD_DATA_SPACE and NEW_SPACE
   objs[next_objs_index++] =
       FACTORY->NewStringFromAscii(CStrVector("abcdefghij"));
   objs[next_objs_index++] =
       FACTORY->NewStringFromAscii(CStrVector("abcdefghij"), TENURED);
 
   // Allocate a large string (for large object space).
-  int large_size = HEAP->MaxObjectSizeInPagedSpace() + 1;
+  int large_size = Page::kMaxNonCodeHeapObjectSize + 1;
   char* str = new char[large_size];
   for (int i = 0; i < large_size - 1; ++i) str[i] = 'a';
   str[large_size - 1] = '\0';
   objs[next_objs_index++] =
       FACTORY->NewStringFromAscii(CStrVector(str), TENURED);
   delete[] str;
 
   // Add a Map object to look for.
   objs[next_objs_index++] = Handle<Map>(HeapObject::cast(*objs[0])->map());
 
@@ skipping 756 matching lines @@
   // clearing correctly records slots in prototype transition array.
   i::FLAG_always_compact = true;
   Handle<Map> map(baseObject->map());
   CHECK(!space->LastPage()->Contains(map->prototype_transitions()->address()));
   CHECK(space->LastPage()->Contains(prototype->address()));
   baseObject->SetPrototype(*prototype, false)->ToObjectChecked();
   CHECK(map->GetPrototypeTransition(*prototype)->IsMap());
   HEAP->CollectAllGarbage(Heap::kNoGCFlags);
   CHECK(map->GetPrototypeTransition(*prototype)->IsMap());
 }