Re: const_cast question

From: Bill Seurer (seurer_at_us.ibm.com)
Date: 05/05/04 

Date: Wed, 05 May 2004 07:29:57 -0500

George Privalov wrote:

> Bill Seurer <seurer@us.ibm.com> wrote in message news:<c7801c$1e8q$1@news.rchland.ibm.com>...
>
>>People want their code to be as fast as possible so they throw in all
>>the "tricks" they have learned (or just heard of) to make it faster even
>>if their code breaks the "contract" that those tricks require. It's
>>fairly obviously for something like this but a lot trickier other times.
>> I see this quite frequently with the aliasing rules and optimization
>>in my compiler work.
>
>
> I can not come up with one example when casting away constness should
> improve the code's performance.

No, no. The other way round. They stick in const thinking it makes the
code faster and then break it by casting away const because the stuff
really wasn't const to begin with.

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