Re: Is reallocarray() planned to be standardized?

From	cross@spitfire.i.gajendra.net (Dan Cross)
Newsgroups	comp.lang.c
Subject	Re: Is reallocarray() planned to be standardized?
Date	2026-05-15 02:08 +0000
Organization	PANIX Public Access Internet and UNIX, NYC
Message-ID	<10u5v6i$k88$3@reader1.panix.com> (permalink)
References	<10u5a5v$nagc$1@dont-email.me> <10u5p86$uo0d$7@kst.eternal-september.org>

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In article <10u5p86$uo0d$7@kst.eternal-september.org>,
Keith Thompson  <Keith.S.Thompson+u@gmail.com> wrote:
>kalevi@kolttonen.fi (Kalevi Kolttonen) writes:
>> Is reallocarray() planned to be standardized? Looking
>> at the man page on Fedora 44, it says this function
>> has been in glibc since version 2.26, OpenBSD libc
>> since release 5.6m and FreeBSD libc release 11.0.
>>
>> So is this function becoming part of ISO C? Or SUS?
>
>reallocarray() does not appear in the latest ISO C2y draft.
>
>It does appear in POSIX.  It's in The Open Group Base Specifications
>Issue 8, but not in Issue 7.
>
>(I'm not convinced it's all that useful.)

The main benefit is that it checks for overflow when multiplying
the element size by the length, and returns NULL in that case.

	- Dan C.

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Is reallocarray() planned to be standardized? kalevi@kolttonen.fi (Kalevi Kolttonen) - 2026-05-14 20:09 +0000
  Re: Is reallocarray() planned to be standardized? kalevi@kolttonen.fi (Kalevi Kolttonen) - 2026-05-14 21:10 +0000
    Re: Is reallocarray() planned to be standardized? cross@spitfire.i.gajendra.net (Dan Cross) - 2026-05-14 23:35 +0000
      Re: Is reallocarray() planned to be standardized? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-05-14 17:46 -0700
        Re: Is reallocarray() planned to be standardized? cross@spitfire.i.gajendra.net (Dan Cross) - 2026-05-15 02:00 +0000
          Re: Is reallocarray() planned to be standardized? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-05-14 19:22 -0700
            Re: Is reallocarray() planned to be standardized? cross@spitfire.i.gajendra.net (Dan Cross) - 2026-05-15 11:02 +0000
              Re: Is reallocarray() planned to be standardized? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-05-15 14:44 -0700
                Re: Is reallocarray() planned to be standardized? cross@spitfire.i.gajendra.net (Dan Cross) - 2026-05-15 21:50 +0000
                Re: Is reallocarray() planned to be standardized? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-05-15 14:55 -0700
                Re: Is reallocarray() planned to be standardized? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-05-15 15:02 -0700
                Re: Is reallocarray() planned to be standardized? scott@slp53.sl.home (Scott Lurndal) - 2026-05-15 22:12 +0000
                Re: Is reallocarray() planned to be standardized? David Brown <david.brown@hesbynett.no> - 2026-05-16 11:38 +0200
                Re: Is reallocarray() planned to be standardized? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-05-16 13:00 +0200
                Re: Is reallocarray() planned to be standardized? David Brown <david.brown@hesbynett.no> - 2026-05-16 13:58 +0200
                Re: Is reallocarray() planned to be standardized? cross@spitfire.i.gajendra.net (Dan Cross) - 2026-05-16 12:34 +0000
                Re: Is reallocarray() planned to be standardized? David Brown <david.brown@hesbynett.no> - 2026-05-16 16:25 +0200
                Re: Is reallocarray() planned to be standardized? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-05-16 12:32 -0700
                Re: Is reallocarray() planned to be standardized? David Brown <david.brown@hesbynett.no> - 2026-05-17 11:10 +0200
                Re: Is reallocarray() planned to be standardized? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-05-19 14:03 -0700
                Re: Is reallocarray() planned to be standardized? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-05-17 06:36 +0200
                Re: Is reallocarray() planned to be standardized? James Kuyper <jameskuyper@alumni.caltech.edu> - 2026-05-20 00:41 -0400
                Re: Is reallocarray() planned to be standardized? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-05-20 07:11 +0200
                Re: Is reallocarray() planned to be standardized? David Brown <david.brown@hesbynett.no> - 2026-05-20 09:49 +0200
                Re: Is reallocarray() planned to be standardized? cross@spitfire.i.gajendra.net (Dan Cross) - 2026-05-20 15:38 +0000
                Re: Is reallocarray() planned to be standardized? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-05-16 12:25 -0700
                Re: Is reallocarray() planned to be standardized? David Brown <david.brown@hesbynett.no> - 2026-05-17 11:12 +0200
                Re: Is reallocarray() planned to be standardized? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-05-17 02:26 -0700
                Leader Keith has spoken! (Was: Is reallocarray() planned to be standardized?) gazelle@shell.xmission.com (Kenny McCormack) - 2026-05-17 12:54 +0000
                Re: Is reallocarray() planned to be standardized? scott@slp53.sl.home (Scott Lurndal) - 2026-05-17 19:19 +0000
                Re: Is reallocarray() planned to be standardized? David Brown <david.brown@hesbynett.no> - 2026-05-17 21:53 +0200
                Re: Is reallocarray() planned to be standardized? cross@spitfire.i.gajendra.net (Dan Cross) - 2026-05-17 20:30 +0000
                Re: Is reallocarray() planned to be standardized? David Brown <david.brown@hesbynett.no> - 2026-05-18 08:14 +0200
                Re: Is reallocarray() planned to be standardized? kalevi@kolttonen.fi (Kalevi Kolttonen) - 2026-05-17 20:01 +0000
                Re: Is reallocarray() planned to be standardized? David Brown <david.brown@hesbynett.no> - 2026-05-18 09:13 +0200
                Re: Is reallocarray() planned to be standardized? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-05-18 09:51 +0200
                Re: Is reallocarray() planned to be standardized? kalevi@kolttonen.fi (Kalevi Kolttonen) - 2026-05-18 14:34 +0000
                Re: Is reallocarray() planned to be standardized? David Brown <david.brown@hesbynett.no> - 2026-05-18 16:49 +0200
                Re: Is reallocarray() planned to be standardized? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-05-18 16:19 -0700
                Re: Is reallocarray() planned to be standardized? cross@spitfire.i.gajendra.net (Dan Cross) - 2026-05-15 22:32 +0000
            Re: Is reallocarray() planned to be standardized? kalevi@kolttonen.fi (Kalevi Kolttonen) - 2026-05-15 15:23 +0000
              Re: Is reallocarray() planned to be standardized? kalevi@kolttonen.fi (Kalevi Kolttonen) - 2026-05-15 17:28 +0000
              Re: Is reallocarray() planned to be standardized? cross@spitfire.i.gajendra.net (Dan Cross) - 2026-05-15 17:40 +0000
                Re: Is reallocarray() planned to be standardized? kalevi@kolttonen.fi (Kalevi Kolttonen) - 2026-05-15 17:50 +0000
                Re: Is reallocarray() planned to be standardized? cross@spitfire.i.gajendra.net (Dan Cross) - 2026-05-15 18:28 +0000
                Re: Is reallocarray() planned to be standardized? kalevi@kolttonen.fi (Kalevi Kolttonen) - 2026-05-15 21:35 +0000
                Re: Is reallocarray() planned to be standardized? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-05-15 15:05 -0700
                Re: Is reallocarray() planned to be standardized? kalevi@kolttonen.fi (Kalevi Kolttonen) - 2026-05-15 22:35 +0000
                Re: Is reallocarray() planned to be standardized? "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com> - 2026-05-15 17:18 -0700
                Re: Is reallocarray() planned to be standardized? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-05-16 08:07 +0000
                Re: Is reallocarray() planned to be standardized? cross@spitfire.i.gajendra.net (Dan Cross) - 2026-05-16 12:44 +0000
                Re: Is reallocarray() planned to be standardized? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-05-15 23:44 +0200
                Re: Is reallocarray() planned to be standardized? kalevi@kolttonen.fi (Kalevi Kolttonen) - 2026-05-15 21:47 +0000
                Re: Is reallocarray() planned to be standardized? scott@slp53.sl.home (Scott Lurndal) - 2026-05-15 22:10 +0000
                Re: Is reallocarray() planned to be standardized? Janis Papanagnou <janis_papanagnou+ng@hotmail.com> - 2026-05-16 01:13 +0200
                AIX (was Re: Is reallocarray() planned to be standardized?) cross@spitfire.i.gajendra.net (Dan Cross) - 2026-05-15 22:30 +0000
                Re: Is reallocarray() planned to be standardized? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-05-16 08:04 +0000
    Re: Is reallocarray() planned to be standardized? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-05-15 07:07 +0000
      Re: Is reallocarray() planned to be standardized? kalevi@kolttonen.fi (Kalevi Kolttonen) - 2026-05-15 13:58 +0000
        Re: Is reallocarray() planned to be standardized? Lawrence D’Oliveiro <ldo@nz.invalid> - 2026-05-16 00:25 +0000
  Re: Is reallocarray() planned to be standardized? Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2026-05-14 17:26 -0700
    Re: Is reallocarray() planned to be standardized? cross@spitfire.i.gajendra.net (Dan Cross) - 2026-05-15 02:08 +0000
  Re: Is reallocarray() planned to be standardized? Bonita Montero <Bonita.Montero@gmail.com> - 2026-05-16 11:28 +0200

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