bug#8162: 23.3; Crash with invalid default-process-coding-system value

[Eli Zaretskii]

> Date: Thu, 03 Mar 2011 19:20:15 +0900
> From: YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp>
> Cc: 
> 
> Steps to reproduce:
> 
>   1. $ emacs -Q
>   2. M-x shell RET
>   3. M-: (setq default-process-coding-system '(dummy . utf-8-unix)) RET
>   4. C-u M-x shell RET RET
>   5. RET (in the *shell*<2> buffer)
> 
> Result:
> 
>   Crash with SIGSEGV at process.c:5737

Don't you see an error message regarding an invalid coding-system,
before you type the last RET (which causes the crash)?

set-process-coding-system signals an error when it sees the `dummy'
part, but comint.el does nothing about that.  It should kill the shell
buffer it just created, IMO.