Re: #include optimization

From: CBFalconer (cbfalconer_at_yahoo.com)
Date: 09/30/04 

Date: Thu, 30 Sep 2004 10:41:29 GMT

Peter van Merkerk wrote:
> CBFalconer wrote:
>>
>... snip ...
>>
>> Actually it is a job that can be attacked and checked piecemeal.
>> Remove the (presumably) useless includes in one file by commenting
>> out (thus retaining line numbers) and compile it to an object
>> file. Do a binary compare against the original object file. If
>> identical, all is well.
>
> Even if binary compare shows that there are differences all may be well
> too. I learned this the hard way; compiling the same code twice with a
> certain compiler yielded different binaries. Apparently the compiler
> wrote the build date or something like that into the binary. When debug
> information is stored in object files this test may also fail for the
> wrong reasons.

Why did you snip the last sentence or two from my paragraph, which
mentioned precisely this problem? 

-- 
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