VDC_OP_ERRCHK_CONFLICT
flags &= ~VDC_OP_ERRCHK_CONFLICT;
(ldep->flags & VDC_OP_ERRCHK_CONFLICT)))) {
#define VDC_OP_ERRCHK (VDC_OP_ERRCHK_BACKEND | VDC_OP_ERRCHK_CONFLICT)