#include "stdio_impl.h" static size_t do_read(FILE *f, unsigned char *buf, size_t len) { return __string_read(f, buf, len); } int vsscanf(const char *restrict s, const char *restrict fmt, va_list ap) { FILE f = { .buf = (void *)s, .cookie = (void *)s, .read = do_read, .lock = -1 }; return vfscanf(&f, fmt, ap); } weak_alias(vsscanf,__isoc99_vsscanf);