char32_t
extern size_t mbrtoc32(char32_t *_RESTRICT_KYWD, const char *_RESTRICT_KYWD,
extern size_t c32rtomb(char *_RESTRICT_KYWD, char32_t,
char32_t c32;
c32rtomb(char *restrict str, char32_t c32, mbstate_t *restrict ps)
mbrtoc32(char32_t *restrict pc32, const char *restrict str, size_t len,
char32_t out;
char32_t out;
char32_t out;
char32_t out, exp = L'\0';
char32_t out = 0x12345, exp = 0x12345;
char32_t out = 0x123456, exp = 0x123456;
static const char32_t uchar_value = 0x5149;
char32_t out;