Segfault when connecting named pipe

[alexcrichton]

I believe that when executing overlapped operations on Windows a requirements is that the address of the OVERLAPPED passed in does not change, but I believe that during pipe creation the overlapped passed in does indeed change addresses, which I think can cause segfaults.

[retep998]

The simple fix for this is to box the OVERLAPPED before passing the pointer to Windows and then keep it in that box until the operation is complete.

[blackbeam]

🤦‍♂️