From:	Prashant Ramachandra <rprash AT wilco-int DOT com>
To:	"'djgpp AT delorie DOT com'" <djgpp AT delorie DOT com>
Message-ID:	<5BF60CD649EDD411A04600B0D049F53AFFA913@hydmail02.hyd.wilco-int.com>
Subject:	[OT] About const int
Date:	Wed, 18 Jul 2001 21:41:11 +0530
MIME-Version:	1.0
X-Mailer:	Internet Mail Service (5.5.2650.21)
Reply-To:	djgpp AT delorie DOT com

I have a question that's probably got nothing to with DJGPP, so please
forgive me for this off-topic post.

I tried the program below and interestingly, it gives me...

"Constant is 10. It is actually 1"

Shouldn't gcc not make the assumption that the value of j *is* 10 and
instead reference itfrom memory instead.

> Program:
> 
> #include <iostream.h>
> 
> class Test {
> public:
>   static const int i;
> 
>   void run () { cout << i << endl; }
>   Test () { }
> };
> 
> const int Test::i = 7;
> 
> const int j = 10;
> 
> int main ()
> {
>   Test t1;
>   Test t2;
> 
>   int *k = (int *)&j;
>   *k = 1;
>   cout << "Constant is " << j << ". It is actually " << *k << endl;
>   t1.run ();
>   t2.run ();
> }
> 
Thanks a lot for any explanations.

Regards,
Prashant
--
Prashant TR <tr AT midpec DOT com>  Web: http://www.midpec.com/

"Those who do not understand Unix are condemned to reinvent it, poorly."
     -- Henry Spencer


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