-// XXX! The garbage collector replaces a WEAK with a DEAD_WEAK
-// in-place, which causes problems if the heap is scanned linearly
-// after GC (certain kinds of profiling do this). So when profiling,
-// we set the size of a DEAD_WEAK to 4 non-pointers, rather than its
-// usual 1.
-
-#ifdef PROFILING
-#define DEAD_WEAK_PAYLOAD_WORDS 4
-#else
-#define DEAD_WEAK_PAYLOAD_WORDS 1
-#endif
+// It's important when turning an existing WEAK into a DEAD_WEAK
+// (which is what finalizeWeak# does) that we don't lose the link
+// field and break the linked list of weak pointers. Hence, we give
+// DEAD_WEAK 4 non-pointer fields, the same as WEAK.