[MAS-discuss] Server stability (or: how to kill MAS server in 21 microseconds:-)

[Kyku <ky...@os...>]

Hi all,

Suppose the following scenario:
1) open the MAS server in one terminal
2) open command line client in another, connect to the server.
3) pressing Ctrl-C in the client.

In my case, server starts consuming 100% CPU, then prints:
mas: PANIC: unexpected harmful signal ...

mas: system execution failed.
Following is the set of recorded exceptions.
NB: The raised panic may have induced completely inconsistent information:

-------------------------------------------------------------------------------
Class / Object      Routine                Nature of exception           
Effect
-------------------------------------------------------------------------------
MA_SERVER           root's creation        unexpected harmful signal:
<08351488>                                 Eiffel run-time panic.        Bye
-------------------------------------------------------------------------------
MA_SERVER           root's creation
<08351488>                                 Routine failure.              Bye
-------------------------------------------------------------------------------
MA_SERVER           root's creation
<08351488>                                 Routine failure.              Bye
-------------------------------------------------------------------------------
MA_SERVER           root's creation
<08351488>                                 Routine failure.              Bye
-------------------------------------------------------------------------------

mas: dumping core to generate debugging information...
fish: Job 0, 'sudo ./mas -f, 22917 /usr/local/stow/mas/lib/data/*.txt' 
terminated by signal SIGABRT (Abort)

Now, when the MAS is consuming 100% CPU, I can hit Ctrl-c in the server 
terminal, which starts printing:
Caught signal in main menu:
Broken pipe (13) - continuing ...

Could you please help me with this. Frankly, I consider it a bug - a 
server should withstand malicious/bad input from its clients.




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