Considering C99 for Curl(daniel.haxx.se)

    snprintf(dest, sizeof dest, source);   // BAD code do not repeat

    snprintf(dest, sizeof dest, "%s", source);

    char *stecpy(char *d, const char *s, const char *e)
    {
      if (e) e--;
      while (d < e && *s)
        *d++ = *s++;
      if (d)
        *d = '\0';
      return d;
    }

    main() {
      char buf[64];
      char *ptr, *end = buf+sizeof(buf) ;
    
      ptr = stecpy(buf, "hello", end);
      ptr = stecpy(ptr, " world", end);
    }

  void foo(size_t n) { int a[n][n]; }

  void bar(size_t n, void *p) { int (*pa)[n][n] = p; }