EB_NULL
for (; ebp->eb_tag != EB_NULL; ebp++)
for (; ebp->eb_tag != EB_NULL; ebp++)
for (; ebp->eb_tag != EB_NULL; ebp++)
for (; ebp->eb_tag != EB_NULL; ebp++)
ebp->eb_tag = EB_NULL, ebp->eb_un.eb_val = 0;
ebp->eb_tag = EB_NULL, ebp->eb_un.eb_val = 0;
EBV(bv, EB_NULL, 0);
EBV64(bv, EB_NULL, 0);