Add attributions so printf like functions can have their arguments checked.

runtime/vm/allocation.cc

Index: runtime/vm/allocation.cc
diff --git a/runtime/vm/allocation.cc b/runtime/vm/allocation.cc
index e0779042701650b34b1d6bd52bf41462931eeb0b..0e97ed07b0dfe50aed16ab4ca1ca7f710a887cf8 100644
--- a/runtime/vm/allocation.cc
+++ b/runtime/vm/allocation.cc
@@ -19,7 +19,7 @@ void* ZoneAllocated::operator new(uword size) {
   ASSERT(isolate != NULL);
   ASSERT(isolate->current_zone() != NULL);
   if (size > static_cast<uword>(kIntptrMax)) {
-    FATAL1("ZoneAllocated object has unexpectedly large size %uld", size);
+    FATAL1("ZoneAllocated object has unexpectedly large size %"Pu"", size);
   }
   return reinterpret_cast<void*>(isolate->current_zone()->AllocUnsafe(size));
 }