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To: Songtao Chen <songtao@cisco.com>
Cc: Neil Booth <neil@daikokuya.co.uk>,  gcc-bugs@gcc.gnu.org
Subject: Re: Is this a bug?
From: Zack Weinberg <zack@codesourcery.com>
Date: Mon, 13 Jan 2003 05:17:00 -0000
In-Reply-To: <4.3.2.7.2.20030102173856.01f3e0c0@toque.cisco.com> (Songtao
 Chen's message of "Thu, 02 Jan 2003 17:59:48 -0500")
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Songtao Chen <songtao@cisco.com> writes:

>     i = ++i % 2;
>     i = i++ % 2;

Both of these are invalid C - you can't modify i twice in the same
statement (a slight simplification, which will do).

Write instead

      i = (i+1) % 2;

to get the behavior you wanted.

zw