Changing string length field type from int to SMI. It will make it be a regu...

test/cctest/test-serialize.cc

Index: test/cctest/test-serialize.cc
===================================================================
--- test/cctest/test-serialize.cc	(revision 4579)
+++ test/cctest/test-serialize.cc	(working copy)
@@ -573,7 +573,8 @@
         FixedArray::kHeaderSize + kSmallFixedArrayLength * kPointerSize;
     const int kSmallStringLength = 16;
     const int kSmallStringSize =
-        SeqAsciiString::kHeaderSize + kSmallStringLength;
+        (SeqAsciiString::kHeaderSize + kSmallStringLength +
+        kObjectAlignmentMask) & ~kObjectAlignmentMask;
     const int kMapSize = Map::kSize;
 
     Object* new_last = NULL;