Why can the program crash here?

Question

Android

If I send it to a regular computer, then it's normal, but if it's on Android, it crashes...

bool Socket::sendAll(void *buffer, int size) {
  if (!isValid()) return 0;
  char *ptr = (char*) buffer;

  int counter = 0;
  while (size > 0)
  {
    int sz = ::send(m_sock, ptr, size, 0);
    usleep(1000);
    if (sz < 1) {
      counter++;
      if (counter > 10000) return false;
      continue;
    }
    ptr += sz;
    size -= sz;
  }

  return true;
}

Answer 1

As a variant of the buffer variable, memory is not always allocated