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Re: proposed documentation change to bitmap.h

From: Richard Henderson <rth at redhat dot com>
To: Daniel Berlin <dberlin at dberlin dot org>
Cc: Diego Novillo <dnovillo at redhat dot com>, Ken Zadeck <zadeck at naturalbridge dot com>, "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
Date: Wed, 27 Oct 2004 12:11:17 -0700
Subject: Re: proposed documentation change to bitmap.h
References: <417E7C64.1040703@naturalbridge.com> <1098809484.10239.26.camel@localhost.localdomain> <Pine.LNX.4.60.0410261301530.23544@dberlin.org>

On Tue, Oct 26, 2004 at 01:02:25PM -0400, Daniel Berlin wrote:
> Easily yes.
> Cheaply, i'm not so sure.

Certainly.  Add a "modified" bit to the bitmap structure.
Clear it before beginning iteration.  Set it in anything
that changes the bitmap.  ICE in the iteration loop if it
becomes set.

Should be --enable-checking, for certain.

r~

Follow-Ups:
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  - From: Daniel Berlin

References:
- proposed documentation change to bitmap.h
  - From: Kenneth Zadeck
- Re: proposed documentation change to bitmap.h
  - From: Diego Novillo
- Re: proposed documentation change to bitmap.h
  - From: Daniel Berlin

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