Attempt to fix clang build another time.

runtime/vm/raw_object.h

Index: runtime/vm/raw_object.h
===================================================================
--- runtime/vm/raw_object.h	(revision 43103)
+++ runtime/vm/raw_object.h	(working copy)
@@ -1023,8 +1023,9 @@
   struct PcDescriptorRec {
     uword pc_offset() const { return pc_offset_; }
     void set_pc_offset(uword value) {
-      ASSERT((sizeof(value) == 4) ||
-             static_cast<uint64_t>(value) <= static_cast<uint64_t>(kMaxUint32));
+#if defined(TARGET_ARCH_X64) || defined(TARGET_ARCH_ARM64)

[Ivan Posva, 2015/01/23 18:57:31]

ARCH_IS_64_BIT

Alternatively you could limit the offset to a reasonable amount and have some
bits left over with the added benefit that you can go back to Utils::IsUint(24,
value).

[Florian Schneider, 2015/01/26 10:28:01]

The proper fix would be to rewrite IsUint/IsInt to work on cross-platform.
Unfortunately I can't reproduce the buildbot's error messages: My previous
asserts all compiled fine locally with clang and gcc), so doing this would
involve guesswork about what may compile there.

+      ASSERT(value <= static_cast<uword>(kMaxUint32));
+#endif
       pc_offset_ = value;
     }