Harden more runtime functions

src/objects-inl.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // Review notes:
 //
 // - The use of macros in these inline functions may seem superfluous
 // but it is absolutely needed to make sure gcc generates optimal
 // code. gcc is not happy when attempting to inline too deep.
 //
@@ skipping 5107 matching lines @@
   STATIC_ASSERT(holder::offset % kPointerSize == 0);              \
   int holder::name() {                                            \
     int value = READ_INT_FIELD(this, offset);                     \
     ASSERT(kHeapObjectTag == 1);                                  \
     ASSERT((value & kHeapObjectTag) == 0);                        \
     return value >> 1;                                            \
   }                                                               \
   void holder::set_##name(int value) {                            \
     ASSERT(kHeapObjectTag == 1);                                  \
     ASSERT((value & 0xC0000000) == 0xC0000000 ||                  \
-           (value & 0xC0000000) == 0x000000000);                  \
+           (value & 0xC0000000) == 0x0);                          \
     WRITE_INT_FIELD(this,                                         \
                     offset,                                       \
                     (value << 1) & ~kHeapObjectTag);              \
   }
 
 #define PSEUDO_SMI_ACCESSORS_HI(holder, name, offset)             \
   STATIC_ASSERT(holder::offset % kPointerSize == kIntSize);       \
   INT_ACCESSORS(holder, name, offset)
 
 
@@ skipping 1716 matching lines @@
 #undef READ_SHORT_FIELD
 #undef WRITE_SHORT_FIELD
 #undef READ_BYTE_FIELD
 #undef WRITE_BYTE_FIELD
 #undef NOBARRIER_READ_BYTE_FIELD
 #undef NOBARRIER_WRITE_BYTE_FIELD
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_INL_H_