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Groups > comp.lang.c > #148071
| From | Ben Bacarisse <ben.usenet@bsb.me.uk> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: One works, the other doesn't? |
| Date | 2019-11-20 11:14 +0000 |
| Organization | A noiseless patient Spider |
| Message-ID | <87v9re7qbi.fsf@bsb.me.uk> (permalink) |
| References | (3 earlier) <qq0nfg$1hk0$1@gioia.aioe.org> <87imnvj2v6.fsf@bsb.me.uk> <qq1m1g$55b$1@gioia.aioe.org> <87y2wrgrr3.fsf@bsb.me.uk> <qr32g1$psg$1@gioia.aioe.org> |
jak <nospam@please.ty> writes:
> Il 08/11/2019 01:02, Ben Bacarisse ha scritto:
>> jak <nospam@please.ty> writes:
<cut>
>>> typedef struct LIST
>>> {
>>> char *str;
>>> int count;
>>> struct LIST *pMin, *pMaj;
>>> } Lista;
>>>
>>> Lista *BuildList(char *str)
>>> {
>>> Lista *lRet = malloc(sizeof(Lista));
>>> if(lRet != NULL)
>>> {
>>> lRet->str = malloc((strlen(str) + 1) * sizeof(str[0]));
>>
>> You could avoid doing two allocation by using a C99 flexible array
>> member:
>
> I know but unfortunately I can't afford to choose which compiler to
> use and during my work I meet really old compilers, so I tend to
> ignore the new features.
There's a very old trick to do the same thing:
typedef struct LIST
{
int count;
struct LIST *pMin, *pMaj;
char str[1];
} Lista;
Then you over-allocate the struct and store the string in-place, so to
speak. Of course it is technically undefined to access elements of the
str member with indexes > 1, but it was (and is) such a widely-used hack
that I would be surprised if any compiler did not take the possibility
into account.
<cut>
--
Ben.
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One works, the other doesn't? DFS <nospam@dfs.com> - 2019-11-03 17:39 -0500
Re: One works, the other doesn't? Bart <bc@freeuk.com> - 2019-11-04 00:20 +0000
Re: One works, the other doesn't? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2019-11-04 06:53 +0000
Re: One works, the other doesn't? James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-11-04 09:45 -0500
Re: One works, the other doesn't? DFS <nospam@dfs.com> - 2019-11-05 10:34 -0500
Re: One works, the other doesn't? mark.bluemel@gmail.com - 2019-11-05 07:45 -0800
Re: One works, the other doesn't? DFS <nospam@dfs.com> - 2019-11-05 10:53 -0500
Re: One works, the other doesn't? Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2019-11-05 08:04 -0800
Re: One works, the other doesn't? DFS <nospam@dfs.com> - 2019-11-05 11:29 -0500
Re: One works, the other doesn't? David Brown <david.brown@hesbynett.no> - 2019-11-05 23:24 +0100
Re: One works, the other doesn't? Bart <bc@freeuk.com> - 2019-11-05 23:06 +0000
Re: One works, the other doesn't? Ian Collins <ian-news@hotmail.com> - 2019-11-06 12:31 +1300
Re: One works, the other doesn't? Bart <bc@freeuk.com> - 2019-11-05 23:43 +0000
Re: One works, the other doesn't? Ian Collins <ian-news@hotmail.com> - 2019-11-06 12:54 +1300
Re: One works, the other doesn't? Bart <bc@freeuk.com> - 2019-11-06 01:35 +0000
Re: One works, the other doesn't? Ian Collins <ian-news@hotmail.com> - 2019-11-06 15:16 +1300
Re: One works, the other doesn't? Bart <bc@freeuk.com> - 2019-11-06 11:11 +0000
Re: One works, the other doesn't? Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2019-11-06 01:59 -0800
Re: One works, the other doesn't? David Brown <david.brown@hesbynett.no> - 2019-11-06 11:35 +0100
Re: One works, the other doesn't? Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2019-11-06 08:57 -0800
Re: One works, the other doesn't? Ian Collins <ian-news@hotmail.com> - 2019-11-07 07:24 +1300
Re: One works, the other doesn't? David Brown <david.brown@hesbynett.no> - 2019-11-06 22:59 +0100
Re: One works, the other doesn't? Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2019-11-06 14:37 -0800
Re: One works, the other doesn't? David Brown <david.brown@hesbynett.no> - 2019-11-07 00:58 +0100
Re: One works, the other doesn't? Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2019-11-07 02:08 -0800
Re: One works, the other doesn't? David Brown <david.brown@hesbynett.no> - 2019-11-07 15:43 +0100
Re: One works, the other doesn't? Robert Wessel <robertwessel2@yahoo.com> - 2019-11-07 16:15 -0600
Re: One works, the other doesn't? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2019-11-10 20:01 +0000
Re: One works, the other doesn't? Ian Collins <ian-news@hotmail.com> - 2019-11-11 15:26 +1300
Re: One works, the other doesn't? David Brown <david.brown@hesbynett.no> - 2019-11-11 12:37 +0100
Re: One works, the other doesn't? Ian Collins <ian-news@hotmail.com> - 2019-11-07 07:21 +1300
Re: One works, the other doesn't? Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2019-11-06 10:39 -0800
Re: One works, the other doesn't? Ian Collins <ian-news@hotmail.com> - 2019-11-07 07:47 +1300
Re: One works, the other doesn't? Ian Collins <ian-news@hotmail.com> - 2019-11-07 08:14 +1300
Re: One works, the other doesn't? Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2019-11-06 12:30 -0800
Re: One works, the other doesn't? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2019-11-08 21:04 -0800
Re: One works, the other doesn't? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2019-11-09 01:37 -0800
Re: One works, the other doesn't? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2019-11-09 01:38 -0800
Re: One works, the other doesn't? Ian Collins <ian-news@hotmail.com> - 2019-11-10 08:32 +1300
Re: One works, the other doesn't? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2019-11-28 16:09 -0800
Re: One works, the other doesn't? David Brown <david.brown@hesbynett.no> - 2019-11-29 11:33 +0100
Re: One works, the other doesn't? Öö Tiib <ootiib@hot.ee> - 2019-11-30 14:20 -0800
Re: One works, the other doesn't? Ian Collins <ian-news@hotmail.com> - 2019-12-01 12:15 +1300
Re: One works, the other doesn't? David Brown <david.brown@hesbynett.no> - 2019-11-06 10:07 +0100
Re: One works, the other doesn't? Bart <bc@freeuk.com> - 2019-11-06 10:58 +0000
Re: One works, the other doesn't? David Brown <david.brown@hesbynett.no> - 2019-11-07 10:05 +0100
Re: One works, the other doesn't? David Brown <david.brown@hesbynett.no> - 2019-11-06 09:52 +0100
Re: One works, the other doesn't? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2019-11-06 00:56 -0800
Re: One works, the other doesn't? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2019-11-06 01:00 -0800
Re: One works, the other doesn't? Bart <bc@freeuk.com> - 2019-11-06 11:32 +0000
Re: One works, the other doesn't? David Brown <david.brown@hesbynett.no> - 2019-11-06 23:11 +0100
Re: One works, the other doesn't? Bart <bc@freeuk.com> - 2019-11-06 23:22 +0000
Re: One works, the other doesn't? David Brown <david.brown@hesbynett.no> - 2019-11-07 01:04 +0100
Re: One works, the other doesn't? Bart <bc@freeuk.com> - 2019-11-07 01:13 +0000
Re: One works, the other doesn't? David Brown <david.brown@hesbynett.no> - 2019-11-07 10:22 +0100
Re: One works, the other doesn't? Bart <bc@freeuk.com> - 2019-11-07 11:51 +0000
Re: One works, the other doesn't? David Brown <david.brown@hesbynett.no> - 2019-11-07 15:58 +0100
Re: One works, the other doesn't? Bart <bc@freeuk.com> - 2019-11-07 16:34 +0000
Re: One works, the other doesn't? DFS <nospam@dfs.com> - 2019-11-07 12:40 -0500
Re: One works, the other doesn't? Bart <bc@freeuk.com> - 2019-11-07 17:57 +0000
Re: One works, the other doesn't? Keith Thompson <kst-u@mib.org> - 2019-11-07 21:14 -0800
Re: One works, the other doesn't? Bart <bc@freeuk.com> - 2019-11-08 09:45 +0000
Re: One works, the other doesn't? Keith Thompson <kst-u@mib.org> - 2019-11-08 09:56 -0800
Re: One works, the other doesn't? Bart <bc@freeuk.com> - 2019-11-08 19:47 +0000
Re: One works, the other doesn't? Ian Collins <ian-news@hotmail.com> - 2019-11-09 09:14 +1300
Re: One works, the other doesn't? Keith Thompson <kst-u@mib.org> - 2019-11-08 19:10 -0800
Re: One works, the other doesn't? Bart <bc@freeuk.com> - 2019-11-09 12:24 +0000
Like an old married couple... (Was: One works, the other doesn't?) gazelle@shell.xmission.com (Kenny McCormack) - 2019-11-08 20:25 +0000
Re: One works, the other doesn't? David Brown <david.brown@hesbynett.no> - 2019-11-07 19:58 +0100
Re: One works, the other doesn't? Bart <bc@freeuk.com> - 2019-11-07 19:31 +0000
Re: One works, the other doesn't? Ian Collins <ian-news@hotmail.com> - 2019-11-08 08:56 +1300
Re: One works, the other doesn't? Bart <bc@freeuk.com> - 2019-11-07 20:06 +0000
Re: One works, the other doesn't? Ian Collins <ian-news@hotmail.com> - 2019-11-08 09:21 +1300
Re: One works, the other doesn't? Bart <bc@freeuk.com> - 2019-11-07 21:20 +0000
Re: One works, the other doesn't? Ian Collins <ian-news@hotmail.com> - 2019-11-08 10:28 +1300
Re: One works, the other doesn't? Bart <bc@freeuk.com> - 2019-11-07 22:35 +0000
Re: One works, the other doesn't? Ian Collins <ian-news@hotmail.com> - 2019-11-09 09:22 +1300
Re: One works, the other doesn't? jadill33@gmail.com - 2019-11-07 08:37 -0800
Re: One works, the other doesn't? Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2019-11-07 08:52 -0800
Re: One works, the other doesn't? jadill33@gmail.com - 2019-11-07 09:52 -0800
Re: One works, the other doesn't? David Brown <david.brown@hesbynett.no> - 2019-11-07 20:04 +0100
Re: One works, the other doesn't? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2019-11-08 19:50 -0800
Re: One works, the other doesn't? Bonita Montero <Bonita.Montero@gmail.com> - 2019-11-05 18:05 +0100
Re: One works, the other doesn't? Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2019-11-05 09:28 -0800
Re: One works, the other doesn't? Bonita Montero <Bonita.Montero@gmail.com> - 2019-11-05 19:02 +0100
Re: One works, the other doesn't? David Brown <david.brown@hesbynett.no> - 2019-11-05 23:21 +0100
Re: One works, the other doesn't? Bonita Montero <Bonita.Montero@gmail.com> - 2019-11-06 18:36 +0100
Re: One works, the other doesn't? James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-11-05 12:51 -0500
Re: One works, the other doesn't? DFS <nospam@dfs.com> - 2019-11-05 18:35 -0500
Re: One works, the other doesn't? Barry Schwarz <schwarzb@delq.com> - 2019-11-05 17:53 -0800
Re: One works, the other doesn't? James Kuyper <jameskuyper@alumni.caltech.edu> - 2019-11-06 09:33 -0500
Re: One works, the other doesn't? Barry Schwarz <schwarzb@delq.com> - 2019-11-05 13:36 -0800
Re: One works, the other doesn't? jak <nospam@please.ty> - 2019-11-07 10:17 +0100
Re: One works, the other doesn't? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2019-11-07 12:19 +0000
Re: One works, the other doesn't? jak <nospam@please.ty> - 2019-11-07 18:59 +0100
Re: One works, the other doesn't? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2019-11-08 00:02 +0000
Re: One works, the other doesn't? jak <nospam@please.ty> - 2019-11-20 10:54 +0100
Re: One works, the other doesn't? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2019-11-20 11:14 +0000
Re: One works, the other doesn't? jak <nospam@please.ty> - 2019-11-20 13:22 +0100
Re: One works, the other doesn't? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2019-11-28 15:54 -0800
Re: One works, the other doesn't? Keith Thompson <kst-u@mib.org> - 2019-11-20 08:42 -0800
Re: One works, the other doesn't? Manfred <noname@add.invalid> - 2019-11-21 18:56 +0100
Re: One works, the other doesn't? Ben Bacarisse <ben.usenet@bsb.me.uk> - 2019-11-22 01:07 +0000
Re: One works, the other doesn't? Manfred <noname@add.invalid> - 2019-11-22 15:27 +0100
Re: One works, the other doesn't? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2019-11-28 15:47 -0800
Re: One works, the other doesn't? DFS <nospam@dfs.com> - 2019-11-07 18:41 -0500
Re: One works, the other doesn't? Bonita Montero <Bonita.Montero@gmail.com> - 2019-11-05 17:39 +0100
Re: One works, the other doesn't? DFS <nospam@dfs.com> - 2019-11-05 11:47 -0500
Re: One works, the other doesn't? Bonita Montero <Bonita.Montero@gmail.com> - 2019-11-05 17:54 +0100
Re: One works, the other doesn't? luser droog <luser.droog@gmail.com> - 2019-11-05 09:00 -0800
Re: One works, the other doesn't? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2019-11-08 21:02 -0800
Re: One works, the other doesn't? DFS <nospam@dfs.com> - 2019-11-09 02:09 -0500
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