It would be good to get some build farm coverage of this so we don't have to rely on manual testing. I wonder if it's a good idea to just define REALLOCATE_BITMAPSETS when #ifdef CLOBBER_FREED_MEMORY... or if we should ask on the buildfarm-members list if someone wouldn't mind defining it?
+1 to have build farm coverage of REALLOCATE_BITMAPSETS. This flag seems quite useful.