Re: 80286 protected mode

On Wed, 16 Oct 2024 15:38:47 GMT, scott@slp53.sl.home (Scott Lurndal)
wrote:
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mitchalsup@aol.com (MitchAlsup1) writes:
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On Tue, 15 Oct 2024 22:05:56 +0000, Scott Lurndal wrote:
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mitchalsup@aol.com (MitchAlsup1) writes:

malloc() used to be standard K&R C--what dropped it from the
standard ??

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It still is part of the ISO C standard.

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The paragraaph with 3 >'s indicates malloc() cannot be written in
standard C.  It used to be written in standard K&R C.

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K&R may have been 'de facto' standard C, but not 'de jure'.
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Unix V6 malloc used the 'brk' system call to allocate space
for the heap.   Later versions used 'sbrk'.
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Those are both kernel system calls.

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Yes, but malloc() subdivides an already provided space.

Because that space can be treated as a single array of char,