Re: How many wide characters may mbstowcs store?

From	Tim Rentsch <tr.17687@z991.linuxsc.com>
Newsgroups	comp.lang.c
Subject	Re: How many wide characters may mbstowcs store?
Date	2020-06-28 06:32 -0700
Organization	A noiseless patient Spider
Message-ID	<864kqviae5.fsf@linuxsc.com> (permalink)
References	<r9bd16$nbt$1@solani.org> <rd3uc8$sqv$1@dont-email.me>

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Andrey Tarasevich <andreytarasevich@hotmail.com> writes:

> On 5/11/2020 4:30 AM, Philipp Klaus Krause wrote:
>
>> For wcstombs, the wording seems clear to state that it will stop at a
>> terminating 0, but for the mbstowcs it seems unclear to me.
>
> The issue is fairly similar to the one described here
>
> https://trust-in-soft.com/blog/2015/12/21/memcmp-requires-pointers-to-fully-valid-buffers/
>
> The question is whether `memcmp` is allowed to read beyond the first
> differing byte, while still within the specified buffer size.

The question is similar.  The answer isn't.

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Re: How many wide characters may mbstowcs store? Andrey Tarasevich <andreytarasevich@hotmail.com> - 2020-06-25 21:42 -0700
  Re: How many wide characters may mbstowcs store? Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-06-28 06:32 -0700

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