[Bug 1862619] Re: "-serial telnet::xxxx, server" causes "Device 'serial0' is in use"

[bpotato <1862619@bugs.launchpad.net>]

I would observe that it would be much better if the order of the -serial
arguments did not matter so much.  I know gcc has the same sort of
madness (for instance), but it sure isn't intuitive.

But in my case, when you do the -serial things out of order, you end up with a segfault.
That can't be the intended behavior.

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https://bugs.launchpad.net/bugs/1862619

Title:
  "-serial telnet::xxxx,server" causes "Device 'serial0' is in use"

Status in QEMU:
  New

Bug description:
  I start qemu version 4.2.50 in a first terminal :

  $ sudo ./qemu-system-hppa -boot d -serial telnet::4441,server -drive
  if=scsi,bus=0,index=6,file=./hpux.img,format=raw -serial mon:stdio -D
  /tmp/foo -nographic -m 512 -d nochain -cdrom
  ./HPUX_9.05_Installation_Disc_S700.iso -D /tmp/foo -net
  nic,model=tulip  -net tap

  qemu-system-hppa: -serial telnet::4441,server: info: QEMU waiting for
  connection on: disconnected:telnet:0.0.0.0:4441,server

  In another terminal, I launch "telnet localhost 4441"

  And in the qemu window I have the following error:

  Unexpected error in qemu_chr_fe_init() at chardev/char-fe.c:220:
  qemu-system-hppa: Device 'serial0' is in use

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