checkHeap: just return on SMP, we can't do heap sanity checking
because we can't zero slop words safely.
+#if defined(SMP)
+ // heap sanity checking doesn't work with SMP, because we can't
+ // zero the slop (see Updates.h).
+ return;
+#endif
+
for (; bd != NULL; bd = bd->link) {
p = bd->start;
while (p < bd->free) {
for (; bd != NULL; bd = bd->link) {
p = bd->start;
while (p < bd->free) {