#include <stdlib.h>
#include <wchar.h>
#include "libc.h"

wchar_t* wcsdup(const wchar_t* s) {
  size_t l = wcslen(s);
  wchar_t* d = malloc((l + 1) * sizeof(wchar_t));
  if (!d)
    return NULL;
  return wmemcpy(d, s, l + 1);
}