static size_t svu_validate_uv(pTHX_ SV *sv, const char *desc) {
#define svu_validate_uv(S, D) svu_validate_uv(aTHX_ (S), (D))
IV i;
static size_t svu_validate_uv(pTHX_ SV *sv, const char *desc) {
#define svu_validate_uv(S, D) svu_validate_uv(aTHX_ (S), (D))
IV i;