Method dup2

extlibs/fmt/src/os.cc:256–263

}

void file::dup2(int fd) {
  int result = 0;
  FMT_RETRY(result, FMT_POSIX_CALL(dup2(fd_, fd)));
  if (result == -1) {
    FMT_THROW(system_error(errno, "cannot duplicate file descriptor {} to {}",
                           fd_, fd));
  }
}

void file::dup2(int fd, error_code& ec) FMT_NOEXCEPT {
  int result = 0;