Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.lang.c > #63711

Re: recalloc

From Ben Bacarisse <ben.usenet@bsb.me.uk>
Newsgroups comp.lang.c
Subject Re: recalloc
Date 2015-06-21 10:00 +0100
Organization A noiseless patient Spider
Message-ID <87d20pl9ll.fsf@bsb.me.uk> (permalink)
References <mm5lnh$tna$1@dont-email.me> <1136742c-83c7-4e85-8373-15fa26757914@googlegroups.com>

Show all headers | View raw

luser droog <luser.droog@gmail.com> writes:

> On Sunday, June 21, 2015 at 1:32:45 AM UTC-5, jacobnavia wrote:
>> calloc zeroes the new memory. But there is no way to re-alllocate the 
>> memory block WITH zeroes in the new portion, if the new size is bigger.
>> 
>> lcc-win introduces recalloc, with the same signature as realloc but 
>> zeroing the new memory.
>
> That seems like a really good idea. But what about
> also accepting a void* to a fill element, size bytes of which are
> copied into each "word".
> This would offer a solution to the all-bits-zero-is-not-NULL
> problem.

But Jacob, being the library author for a system where NULL has all bits
zero, has no all-bits-zero-is-not-NULL problem!  Complicating the
interface to a non-standard function in order to cope with a situation
that does not occur is pointless.

-- 
Ben.

Back to comp.lang.c | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

recalloc jacobnavia <jacob@jacob.remcomp.fr> - 2015-06-21 08:32 +0200
  Re: recalloc luser droog <luser.droog@gmail.com> - 2015-06-20 23:43 -0700
    Re: recalloc Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-06-21 10:00 +0100
      Re: recalloc luser droog <luser.droog@gmail.com> - 2015-06-21 09:57 -0700
  Re: recalloc Richard Heathfield <rjh@cpax.org.uk> - 2015-06-21 07:51 +0100
    Re: recalloc jacobnavia <jacob@jacob.remcomp.fr> - 2015-06-21 09:22 +0200
      Re: recalloc Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-06-21 09:49 +0100
        Re: recalloc jacobnavia <jacob@jacob.remcomp.fr> - 2015-06-21 12:00 +0200
          Re: recalloc Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-06-21 12:46 +0100
          Re: recalloc James Kuyper <jameskuyper@verizon.net> - 2015-06-21 12:25 -0400
            Re: recalloc David Kleinecke <dkleinecke@gmail.com> - 2015-06-22 08:27 -0700
          Re: recalloc James Kuyper <jameskuyper@verizon.net> - 2015-06-21 12:30 -0400
          Re: recalloc Keith Thompson <kst-u@mib.org> - 2015-06-21 13:00 -0700
    Re: recalloc Keith Thompson <kst-u@mib.org> - 2015-06-21 12:44 -0700
  Re: recalloc jacobnavia <jacob@jacob.remcomp.fr> - 2015-06-21 10:30 +0200
  Re: recalloc Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-06-21 10:14 -0700
    Re: recalloc Richard Heathfield <rjh@cpax.org.uk> - 2015-06-21 19:28 +0100
    Re: recalloc Bartc <bc@freeuk.com> - 2015-06-21 20:10 +0100
      Re: recalloc Keith Thompson <kst-u@mib.org> - 2015-06-21 12:46 -0700
      Re: recalloc Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-06-21 13:41 -0700
        Re: recalloc Richard Heathfield <rjh@cpax.org.uk> - 2015-06-22 00:02 +0100
    Re: recalloc jacobnavia <jacob@jacob.remcomp.fr> - 2015-06-21 22:59 +0200
      Re: recalloc Malcolm McLean <malcolm.mclean5@btinternet.com> - 2015-06-21 14:18 -0700
  Re: recalloc Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-11 04:50 -0700
    Re: recalloc jacobnavia <jacob@jacob.remcomp.fr> - 2015-07-11 16:18 +0200
      Re: recalloc Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-11 13:51 -0700
        Re: recalloc jacobnavia <jacob@jacob.remcomp.fr> - 2015-07-12 15:51 +0200
          Re: recalloc Tim Rentsch <txr@alumni.caltech.edu> - 2015-07-15 03:57 -0700

csiph-web