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From: John Levine <johnl@taugh.com>
Newsgroups: comp.arch
Subject: Re: C and turtles, 80286 protected mode
Date: Wed, 16 Oct 2024 01:08:40 -0000 (UTC)
Organization: Taughannock Networks
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According to MitchAlsup1 <mitchalsup@aol.com>:
>The paragraaph with 3 >'s indicates malloc() cannot be written
>in std. C. It used to be written in std. K&R C. I am not asking
>if it is still in the std libraries, I am asking what happened
>to make it impossible to write malloc() in std. C ?!?

It's easy enough to write malloc() in standard C if your flavor of the
standard includes a way to ask the operating system for heap space.
Back in the old days it was sbrk().  Now it's mmap(MAP_ANON).

But I would be quite surprised if either of those ever made it into
any version of standard C.

-- 
Regards,
John Levine, johnl@taugh.com, Primary Perpetrator of "The Internet for Dummies",
Please consider the environment before reading this e-mail. https://jl.ly