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Re: [RFC] PR/24900: computed but not used cast values

From: Aldy Hernandez <aldyh at redhat dot com>
To: Richard Henderson <rth at redhat dot com>, Ian Lance Taylor <ian at airs dot com>, gcc at gcc dot gnu dot org, joseph at codesourcery dot com
Date: Thu, 17 Nov 2005 20:42:19 -0400
Subject: Re: [RFC] PR/24900: computed but not used cast values
References: <20051117213300.GA15008@redhat.com> <m3br0j0w8b.fsf@gossamer.airs.com> <20051117225448.GA21279@redhat.com> <m33blu279z.fsf@gossamer.airs.com> <20051117232434.GC21375@redhat.com>

> A stronger case for changing this would be that gcc version
> n-1 didn't warn.  As discussed elsewhere, some modicum of
> stability in warnings is desirable from the user's perspective.
> I don't know whether or not this applies in this case.

Well, as I mentioned in the PR, macro writers can wrap the whole thing
in a statement expression and avoid the warning.  Can't we suggest this
and keep (almost) everybody happy?

Follow-Ups:
- Re: [RFC] PR/24900: computed but not used cast values
  - From: Richard Henderson

References:
- [RFC] PR/24900: computed but not used cast values
  - From: Aldy Hernandez
- Re: [RFC] PR/24900: computed but not used cast values
  - From: Ian Lance Taylor
- Re: [RFC] PR/24900: computed but not used cast values
  - From: Richard Henderson
- Re: [RFC] PR/24900: computed but not used cast values
  - From: Ian Lance Taylor
- Re: [RFC] PR/24900: computed but not used cast values
  - From: Richard Henderson

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