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Re: [avr-gcc-list] OT Generic C question


From: varsha
Subject: Re: [avr-gcc-list] OT Generic C question
Date: Tue, 20 Sep 2005 17:42:05 +0530

ya variable  i should have increamentd to 1 ...
but i guess u r not using incremented value of i in your program,
so compiler thinks that it is of no use and doesn't do anything with the
variable...you shoud try defining i variable ...then it will not optimise
the code...
and will show you the incremented value...



----- Original Message -----
From: "Trampas" <address@hidden>
To: <address@hidden>
Sent: Tuesday, September 20, 2005 4:11 PM
Subject: [avr-gcc-list] OT Generic C question


> I was helping a friend debug some code, he is new to C,  using the Keil
> version of GCC for ARM. Anyway I found the following:
>
> int i;
>
> i=0;
> i=i++;
> //i was still zero that
>
> That is i=i++ never incremented i, now I would have thought the line would
> be the same as:
>
> i=i;
> i=i+1;
>
> So you guys are the smartest people I know when it comes to C so I thought
I
> would ask you guys if this is a compiler bug or is my understanding of C
> just been shaken.
>
> Regards,
> Trampas
>
>
>
>
>
> _______________________________________________
> AVR-GCC-list mailing list
> address@hidden
> http://lists.nongnu.org/mailman/listinfo/avr-gcc-list


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