Re: cu coredumps

[Mark Cullen <mark.cullen@xxxxxxxxxxxxx>]

Timour Ezeev wrote:
>  	You got the first case AFAIK, but for the second case you are loosing cp
>  	when you assign it to tmp_cp. The possible solutions are:

Yeah, I didn't quite understand the second case. I was thinking that 
because cp is just a local variable which holds the /dev/cuaa1 part (for 
example) out of name (or atleast I think that's what it's doing), then 
it wouldn't matter too much if I lost what was previously in cp?

>  	1. Create new temp holder (in else) for cp and free() it after
>  	   assignment
>  		or
>  	2. If you dont want to create a new pointer, swap pointers in plase,
>  	   like this
>
>  	(int)tmp_cp ^= (int)cp; (int)cp ^= (int)tmp_cp; (int)tmp_cp ^= (int)cp;
>  	free(tmp_cp);

Pointers and dynamic memory allocation stuff still confuses me a bit, 
which isn't much of a suprise considering I have only had 4 weeks of C 
programming stuff at University, then they moved onto Matlab :(

What does the ^= mean in the above?

>  	or something similar :)
>
>  	Regards,

Thanks for your help!


--
Internet Explorer? Try FireFox at http://www.mozilla.org/products/firefox/
Outlook Express? Try ThunderBird at 
http://www.mozilla.org/products/thunderbird/