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From: Keith Thompson <Keith.S.Thompson+u@gmail.com>
Newsgroups: comp.lang.c
Subject: Re: avoiding strdup()
Date: Sat, 09 Mar 2024 16:37:19 -0800
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vallor <vallor@cultnix.org> writes:
[...]
> Meanwhile, saw someone in another group write:
>
> char * something;
> something = strdup("writable string etc.");
> if( something == NULL ) { etc. }
>
> But that won't work if --std=c99, does work for g99 and c2x.
> The (Linux) man page says:
> /* Since glibc 2.12: */ _POSIX_C_SOURCE >= 200809L
>
> I asked Google about it being a POSIX extension
> added at that late date, and it gave me an answer
> about the C standard:
>
> "C9X London meeting update"
> https://groups.google.com/g/comp.std.c/c/pMaEU_8Rb7w
>  _ _ _ _ _
> 2. strsep and strdup are not being added. strsep() is out because
> not enough people wanted it to vote it in; strdup() lost on the
> grounds that it would be the *ONLY* function other than *alloc()
> in the entire library whose return could be sanely passed to free(),
> and this is surprising.
>  _ _ _ _ _
>
> Also: <https://stackoverflow.com/questions/32944390/what-is-the-rationale-
> for-not-including-strdup-in-the-c-standard>
>
> Anyway, pointed out that they can just use an initializer, something
> about which I was clued in by a friendly person in this very group.

strdup() and strndup() are being added to the C23 standard.

-- 
Keith Thompson (The_Other_Keith) Keith.S.Thompson+u@gmail.com
Working, but not speaking, for Medtronic
void Void(void) { Void(); } /* The recursive call of the void */