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From: Kaz Kylheku <433-929-6894@kylheku.com>
Newsgroups: comp.lang.c
Subject: Re: avoiding strdup()
Date: Sun, 10 Mar 2024 17:12:42 -0000 (UTC)
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On 2024-03-10, Michael S <already5chosen@yahoo.com> wrote:
> On Sat, 09 Mar 2024 16:37:19 -0800
> Keith Thompson <Keith.S.Thompson+u@gmail.com> wrote:
>> strdup() and strndup() are being added to the C23 standard.
>> 
>
> What is justification?

strdup is required by POSIX already and thus widely implemented.
Many programmers who are not into standards already assume it's in C.

For decades, portable programs have been doing things like this:

#if HAVE_STRDUP
#define xstrdup(s) strdup(s)
#else
char *xstrdup(const char *); // own definition
#endif

> What strdup() can do better, for any chosen value of better, than
> strlen()+malloc()+memcpy() ?

Not take up space in every application for a common library routine.

-- 
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