Add diagnostic to find 005 instability.

Signed-off-by: Keith Rothman <537074+litghost@users.noreply.github.com>

fuzzers/005-tilegrid/add_tdb.py

@@ -37,6 +37,7 @@ def load_db(fn):
         parts = l.split(' ')
         tagstr = parts[0]
         addrlist = parts[1:]
+        assert not any(s == '<const0>' for s in addrlist), (fn, l)
         check_frames(tagstr, addrlist)
         # Take the first address in the list
         frame, wordidx, bitidx = parse_addr(addrlist[0])