Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
| From | pa@see.signature.invalid (Pierre Asselin) |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: C struct compatibility when they have the same initial members |
| Date | 2015-05-14 01:33 +0000 |
| Organization | PANIX Public Access Internet and UNIX, NYC |
| Message-ID | <mj0u18$t0k$1@reader1.panix.com> (permalink) |
| References | <miv94g$qme$1@dont-email.me> |
James Harris <james.harris.1@gmail.com> wrote:
> [ ... ]
> 2. Define a struct which has just the pointers and embed that at the
> start of each of the other types as in
> struct common {
> struct common *next;
> struct common *prev;
> );
> struct specific1 {
> struct common c;
> <rest of this node type>
> };
> Again, I don't think this will work without casts.
I think it does work without a cast, but you have to name the
intermediate field, e.g. ptr->c.next, ptr->c.prev instead of just
ptr->next, ptr->prev.
--
pa at panix dot com
Back to comp.lang.c | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
C struct compatibility when they have the same initial members "James Harris" <james.harris.1@gmail.com> - 2015-05-13 11:31 +0100
Re: C struct compatibility when they have the same initial members Johann Klammer <klammerj@NOSPAM.a1.net> - 2015-05-13 17:17 +0200
Re: C struct compatibility when they have the same initial members James Kuyper <jameskuyper@verizon.net> - 2015-05-13 12:25 -0400
Re: C struct compatibility when they have the same initial members Ian Collins <ian-news@hotmail.com> - 2015-05-14 14:33 +1200
Re: C struct compatibility when they have the same initial members "James Harris" <james.harris.1@gmail.com> - 2015-05-14 08:04 +0100
Re: C struct compatibility when they have the same initial members James Kuyper <jameskuyper@verizon.net> - 2015-05-15 00:19 -0400
Re: C struct compatibility when they have the same initial members "James Harris" <james.harris.1@gmail.com> - 2015-05-15 21:32 +0100
Re: C struct compatibility when they have the same initial members James Kuyper <jameskuyper@verizon.net> - 2015-05-15 17:11 -0400
Re: C struct compatibility when they have the same initial members Keith Thompson <kst-u@mib.org> - 2015-05-15 15:27 -0700
Re: C struct compatibility when they have the same initial members Barry Schwarz <schwarzb@dqel.com> - 2015-05-13 11:22 -0700
Re: C struct compatibility when they have the same initial members pa@see.signature.invalid (Pierre Asselin) - 2015-05-14 01:33 +0000
Re: C struct compatibility when they have the same initial members "James Harris" <james.harris.1@gmail.com> - 2015-05-14 08:15 +0100
Re: C struct compatibility when they have the same initial members Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-05-14 11:22 +0100
Re: C struct compatibility when they have the same initial members Ben Bacarisse <ben.usenet@bsb.me.uk> - 2015-05-14 11:27 +0100
csiph-web