Re: Reduced Translation Limit in C2x N2912 Working Draft

[Keith Thompson]

arnab chatterjee <arnabchatte...@gmail.com> writes:
> In section 5.4.2.1 (Translation limits) of the latest C2x working
> draft (https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2912.pdf) it
> says that the minimum upper limit on the number of bytes in an object
> is only 32767 (for hosted environments). However, since C89 this limit
> has always been 65535 (even for previous working drafts of C2x).
>
> Any reason/thoughts behind this silent change (or could this just be a
> typo in the N2912 draft)?

Correction: The limit in C90 was 32767 bytes, changed to 65535 in C99.

It appears to be a deliberate change.

The N2731 draft (2021-10-18) kept the limit of 65535 bytes. N2912
(2022-07-08) changed it to 32767.

This change appears to be in response to "N2808: allow 16-bit ptrdiff_t
again", <https://www.open-std.org/jtc1/sc22/wg14/www/docs/n2808.htm>.

--
Keith Thompson (The_Other_Keith) Keith.S.T...@gmail.com
Working, but not speaking, for Philips
void Void(void) { Void(); } /* The recursive call of the void */

[arnab chatterjee]

Thanks for the clarification.