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From: Thomas Koenig <tkoenig@netcologne.de>
Newsgroups: comp.arch
Subject: Re: Segments
Date: Wed, 15 Jan 2025 22:39:57 -0000 (UTC)
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Keith Thompson <Keith.S.Thompson+u@gmail.com> schrieb:
> Thomas Koenig <tkoenig@netcologne.de> writes:
>> Keith Thompson <Keith.S.Thompson+u@gmail.com> schrieb:
>>> Thomas Koenig <tkoenig@netcologne.de> writes:
>>> [...]
>>>> CHERY targets C, which on the one hand, I understand (there's a
>>>> ton of C code out there), but trying to retrofit a safe memory
>>>> model onto C seems a bit awkward - it might have been better to
>>>> target a language which has arrays in the first place, unlike C.
>>> [...]
>>>
>>> C does have arrays.
>>
>> Sort of - they decay into pointers at first sight.
>
> In most but not all contexts.  For example, `sizeof arr` yields the size
> of the array, not the size of a pointer.

Jep.

>> But what I should have written was "multi-dimensional arrays",
>> with a reasonable way of handling them.
>
> In C, multidimensional arrays are nothing more or less than arrays of
> arrays.  You can also build data structures using pointers that are
> accessed using the same a[i][j] syntax as is used for a multidimensional
> array.  And yes, they can be difficult to work with.

A pointer forest is also Not Good (TM) for efficiency...