KMC_IDENTIFIER
int identifier = ((c->cache_flags & KMC_IDENTIFIER) != 0);
if (!(cp->cache_cflags & KMC_IDENTIFIER))
ASSERT(!(cflags & KMC_IDENTIFIER)); /* consumer should not set this */
cflags |= KMC_IDENTIFIER;
ASSERT(!(cp->cache_cflags & KMC_IDENTIFIER));