OP_ADDPRINC
assert(opcode != OP_ADDPRINC && opcode != OP_MODPRINC);
assert(opcode == OP_ADDPRINC || opcode == OP_MODPRINC);
if (opcode == OP_ADDPRINC && h->vt.addprinc != NULL) {
!stub_auth_restrict(handle, OP_ADDPRINC, arg->rec.principal,
!stub_auth_restrict(handle, OP_ADDPRINC, arg->rec.principal, &arg->rec,