unsupported_sign_update
ATTRIBUTE_WARN_UNUSED_RET int unsupported_sign_update(struct ec_sign_context * ctx,
.sign_update = unsupported_sign_update,
.sign_update = unsupported_sign_update,
.sign_update = unsupported_sign_update,
.sign_update = unsupported_sign_update,
(sig->sign_update == unsupported_sign_update) ||