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

From: Richard Henderson <rth at redhat dot com>
To: Joe Buck <Joe dot Buck at synopsys dot COM>
Cc: Ian Lance Taylor <ian at airs dot com>, Aldy Hernandez <aldyh at redhat dot com>, gcc at gcc dot gnu dot org, joseph at codesourcery dot com
Date: Thu, 17 Nov 2005 15:18:42 -0800
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> <20051117230042.GP15434@synopsys.com>

On Thu, Nov 17, 2005 at 03:00:42PM -0800, Joe Buck wrote:
> As in the example, these cases will usually arise in macros, where under
> some circumstances some computation will be wasted.

Which is no different from f()+1, for which no one is arguing
that the warning we give is incorrect.  If you've got such
cases, you simply should be asking for this warning, IMO.

r~

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: Joe Buck

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