Re: LYNX-DEV signal handling

[T.E.Dickey]

(too many)
> Many places in the code have sequences similar to this:
> 
>     (void) signal(SIGHUP, SIG_DFL);
>     (void) signal(SIGTERM, SIG_DFL);
> #ifndef VMS
>     (void) signal(SIGINT, SIG_DFL);
> #endif /* !VMS */
> #ifdef SIGTSTP
>     if (no_suspend)
>       (void) signal(SIGTSTP, SIG_DFL);
> #endif /* SIGTSTP */
>     exit(-1);
I'd prefer _not_ using exit(-1), since it's not POSIX. (Use only EXIT_SUCCESS
or EXIT_FAILURE).
 
> Under all Unix systems with which I am familiar, this sequence should be
> unnecessary.  If a process is exiting, it is committed to doing so; no
> special signal processing should be necessary.
some (?) implementors are doing buffer allocation in exit(); there is the
possibility that this will fail (or the process may get hung).  I have a hunch
that this code addresses a problem on some system where it happened to bite
someone.

-- 
Thomas E. Dickey
address@hidden
http://www.clark.net/pub/dickey
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