From: Richard Earnshaw <rearnsha@arm.com>
To: Nathan Sidwell <nathan@cs.bris.ac.uk>
Cc: rearnsha@sun52.arm.com
Subject: Re: suggest parentheses around assignment used as truth value
Date: Fri, 03 Jul 1998 06:15:00 -0000 [thread overview]
Message-ID: <199807030923.KAA25571@sun52.NIS.cambridge> (raw)
In-Reply-To: <359C95DD.40B0@cs.bris.ac.uk>
>
> It's rather hard to double the parentheses in error, and the form does
> visually stand out.
>
It's very easy to double the parentheses in error. You just have to have
the erroneous code inside a macro.
Somewhat simple I know, but:
#define COMPARE(X,Y) ((X)=(Y)) /* Should be == */
...
if (COMPARE(p,q)) {...} /* Should get a warning, but doesn't */
Richard.
next prev parent reply other threads:[~1998-07-03 6:15 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
1998-06-30 19:49 Marc Rouaix
1998-07-01 2:51 ` Andreas Schwab
1998-07-01 9:20 ` Richard Earnshaw
1998-07-01 21:20 ` Bill Currie
1998-07-02 7:08 ` Richard Earnshaw
1998-07-03 3:31 ` Nathan Sidwell
1998-07-03 6:15 ` Richard Earnshaw [this message]
1998-07-01 3:42 ` Branko Cibej
1998-07-02 7:08 ` Carlo Wood
1998-07-03 14:48 ` Kamil Iskra
1998-07-01 4:00 Brad M. Garcia
1998-07-01 20:20 ` Tim Hollebeek
1998-07-02 1:39 ` Harvey J. Stein
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