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From: "Warren W. Gay VE3WWG" <ve3wwg@home.com>
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Subject: Re: avl tree - booch components
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Date: Fri, 14 Sep 2001 16:47:24 GMT
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Date: 2001-09-14T16:47:24+00:00
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Simon Wright wrote:

> "Warren W. Gay VE3WWG" <ve3wwg@home.com> writes:
>>Jeffrey Carter wrote:
>>
>>>Unless the constant is never referenced, and your compiler optimizes it
>>>away.
>>>
>>That has never been my experience under GNAT, and never my
>>experience under C/C++.
> 
> With foo.cc containing
> 
>   static const char rcsid[] = "hello world";
>   int main()
>   {
>     return 0;
>   }
> 
> I get
> 
>   orm[410]$ c++ -v
>   Reading specs from /usr/lib/gcc-lib/i386-slackware-linux/egcs-2.91.66/specs
>   gcc version egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)
>   orm[411]$ c++ -O2 foo.cc
>   orm[412]$ strings a.out | grep hello
>   orm[413]$ c++ foo.cc
>   orm[414]$ strings a.out | grep hello
>   hello world
> 
> (but gcc retains the string even with -O2)


Ouch! You're right. This doesn't happen under HPUX with their C++

compiler, but obviously gcc is behaving differently.
-- 
Warren W. Gay VE3WWG
http://members.home.net/ve3wwg