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Programming > C > Re: problem wit...
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Re: problem with realloc

by vippstar@[EMAIL PROTECTED] May 3, 2008 at 05:00 PM

On May 4, 2:53 am, Igal <igal.al...@[EMAIL PROTECTED]
> wrote:
> > If `bp2' doesn't point to a pointer returned by realloc, malloc or
> > calloc, realloc() will produce undefined results (unless `bp2's value
> > is NULL)
> > But I *see* what you are trying to do, here's the actual logic:
> > size_t n = 0;
> > back:
> > if(fread(&bp2[n], sizeof bp2[0], 1, fp) != 1) { /* handle error or EOF
> > */ }
> > n++;
> > bp2 = realloc(bp2, n+1 * sizeof bp2[0]);
> > if(bp2 == NULL) { /* ... */ }
> > goto back;
>
> thanks, this helped a lot. i just didn't know i can use bp2 just as
> normal array.

Depends, in this case you can.
Read section 6 of the FAQ <http://c-faq.com/>
which explains arrays/
pointers and then read the rest of the FAQ.
 




 11 Posts in Topic:
problem with realloc
Igal <igal.alkon@[EMAI  2008-05-03 09:21:19 
Re: problem with realloc
vippstar@[EMAIL PROTECTED  2008-05-03 09:33:17 
Re: problem with realloc
Barry Schwarz <schwarz  2008-05-03 21:51:53 
Re: problem with realloc
<brya103@[EMAIL PROTEC  2008-05-03 13:13:32 
Re: problem with realloc
Joe Wright <joewwright  2008-05-03 13:29:04 
Re: problem with realloc
Ulrich Eckhardt <dooms  2008-05-03 19:39:27 
Re: problem with realloc
Igal <igal.alkon@[EMAI  2008-05-03 16:53:18 
Re: problem with realloc
vippstar@[EMAIL PROTECTED  2008-05-03 17:00:05 
Re: problem with realloc
vippstar@[EMAIL PROTECTED  2008-05-04 04:42:39 
Re: problem with realloc
Ulrich Eckhardt <dooms  2008-05-13 15:10:48 
Re: problem with realloc
santosh <santosh.k83@[  2008-05-16 00:22:45 

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tan12V112 Wed Jul 9 0:52:59 CDT 2008.