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Re: Is this a bug?

From: Songtao Chen <songtao at cisco dot com>
To: Zack Weinberg <zack at codesourcery dot com>, Neil Booth <neil at daikokuya dot co dot uk>
Cc: gcc-bugs at gcc dot gnu dot org
Date: Mon, 06 Jan 2003 09:41:41 -0500
Subject: Re: Is this a bug?
References: <4.3.2.7.2.20030102173856.01f3e0c0@toque.cisco.com><4.3.2.7.2.20030102163940.02192b80@toque.cisco.com><4.3.2.7.2.20030102162123.020738d8@toque.cisco.com><4.3.2.7.2.20030102162123.020738d8@toque.cisco.com><4.3.2.7.2.20030102163940.02192b80@toque.cisco.com><4.3.2.7.2.20030102173856.01f3e0c0@toque.cisco.com>

Hi Zack and Neil,

Thank you very much for the explanation.

Songtao

At 11:09 PM 1/4/2003 -0800, Zack Weinberg wrote:

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

References:
- Re: Is this a bug?
  - From: Songtao Chen
- Re: Is this a bug?
  - From: Songtao Chen
- Is this a bug?
  - From: Songtao Chen
- Re: Is this a bug?
  - From: Zack Weinberg

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