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From: Jonathan Wakely <jwakely.gcc@gmail.com>
Date: Wed, 12 Aug 2020 12:59:18 +0100
Message-ID: <CAH6eHdQftTt=99b1ukrRfoFRvssOJwP-=E--pPGUZpom4kdgMA@mail.gmail.com>
Subject: Re: Is realloc(3) permitted to fail when shrinking a block?
To: =?UTF-8?B?5a2Z5LiW6b6ZIHN1bnNoaWxvbmc=?= <sunshilong369@gmail.com>
Cc: Dan Kegel <dank@kegel.com>, gcc-help <gcc-help@gcc.gnu.org>
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On Wed, 12 Aug 2020 at 12:23, =E5=AD=99=E4=B8=96=E9=BE=99 sunshilong <sunsh=
ilong369@gmail.com> wrote:
>
> >This mailing list is about GCC, not general C programming. The realloc
> >function is not part of GCC.
> Sorry, I didn't notice it.
> I took it granted that libc is part of the GCC since there is a folder
> named "libstdc++" in the Github of GCC(i.e.
> https://github.com/gcc-mirror/gcc/tree/master/libstdc%2B%2B-v3).
>
> One more question arises, why there is no library for libc whereas
> libstdc++ is provided by GCC?

Because every unix-like OS already has its own libc, because C and
UNIX were developed hand-in-hand.

Traditionally they didn't have a C++ library, so a C++ compiler has to
provide the C++ library.