Re: Can I Trust Pointer Arithmetic In Re-Allocated Memory?

From: Barry Schwarz <schwarzb@xxxxxxxxx>
Date: Fri, 11 Aug 2006 17:24:23 -0700

On Fri, 11 Aug 2006 06:09:21 GMT, "Bill Reid"
<hormelfree@xxxxxxxxxxxxxxxx> wrote:

Barry Schwarz <schwarzb@xxxxxxxxx> wrote in message
news:k93od21vgd6n6fhrg6tooem3r5j06ejrq4@xxxxxxxxxx

On Fri, 11 Aug 2006 03:54:19 GMT, "Bill Reid"
<hormelfree@xxxxxxxxxxxxxxxx> wrote:

snip

You memory is
allocated from address to address+size-1. Furthermore, calculating
the value address+size is always allowed but you may not dereference
this address.

...you wouldn't want to dereference an address, right.

It's a very common thing to do. How else do you get the value at that
address? All subscripts involve an implied dereference.

Remove del for email
.

Follow-Ups:
- Re: Can I Trust Pointer Arithmetic In Re-Allocated Memory?
  - From: Bill Reid

References:
- Can I Trust Pointer Arithmetic In Re-Allocated Memory?
  - From: Bill Reid
- Re: Can I Trust Pointer Arithmetic In Re-Allocated Memory?
  - From: Barry Schwarz
- Re: Can I Trust Pointer Arithmetic In Re-Allocated Memory?
  - From: Bill Reid

Prev by Date: Re: Newbie question - displaying trivia questions at random
Next by Date: Re: Friendly warning - BACK UP TODAY!
Previous by thread: Re: Can I Trust Pointer Arithmetic In Re-Allocated Memory?
Next by thread: Re: Can I Trust Pointer Arithmetic In Re-Allocated Memory?
Index(es):
- Date
- Thread

Relevant Pages

Re: Can I Trust Pointer Arithmetic In Re-Allocated Memory?
... Barry Schwarz wrote in message ... Furthermore, calculating ... ...you wouldn't want to dereference an address, ... dereference of that address is that you're one element past the ...
(comp.lang.c)
Re: amazingly, debian server keeps crashing
... > we're having trouble finding evidence anywhere ... > dereference at virtual address 0000008c ... I agree with TreeBoy that this could very well be a memory problem. ...
(Debian-User)
Re: Discovering variable types...
... >> Somthing as simple as this doesn't even work. ... > dereference that byte. ... Ok I'm a few drinks down the road, but am I counting the brackets off ...
(comp.lang.pascal.delphi.misc)
Re: passing global variable by reference?
... sub tree_walk { ... that you have a pointer like object and once it's set you ... only need to dereference it when used via $$. ...
(comp.lang.perl.modules)
Re: Can I Trust Pointer Arithmetic In Re-Allocated Memory?
... You memory is ... Furthermore, calculating ... ...you wouldn't want to dereference an address, ... All subscripts involve an implied dereference. ...
(comp.lang.c)