HCK_FLAGS
DB_CKSUMFLAGS(mp) &= ~HCK_FLAGS;
DB_CKSUMFLAGS(mp) &= ~HCK_FLAGS;
DB_CKSUMFLAGS(mp) &= ~HCK_FLAGS;
DB_CKSUMFLAGS(mp) &= ~HCK_FLAGS;
hck_flags & HCK_FLAGS);
flags = DB_CKSUMFLAGS(mp) & HCK_FLAGS;
ASSERT3U(flags & (HCK_FLAGS), !=, 0);