Re: psql use of 'volatile'

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Peter Eisentraut <peter_e(at)gmx(dot)net>
Cc: PostgreSQL-development <pgsql-hackers(at)postgreSQL(dot)org>
Subject: Re: psql use of 'volatile'
Date: 2000-06-29 16:37:21
Message-ID: 200006291637.MAA06306@candle.pha.pa.us
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> On Thu, 29 Jun 2000, Bruce Momjian wrote:
>
> > Can someone explain why 'volatile' is used in psql/mainloop.c?
>
> If you remove them then you get tons of warnings about variables possibly
> getting clobbered. The reason is the longjmp business that's going on when
> you press Control-C. (The fact that the variables would get clobbered is
> not critical since they're reinitialized immediately anyway, but who am I
> to argue with the compiler.)

Agreed.

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