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To: cygwin@cygwin.com
Subject: Re: wcwidth broken with gcc 16
In-Reply-To: <21ca1d38-7b82-49af-b954-b83141237843@towo.net> (Thomas Wolff via
 Cygwin's message of "Mon, 1 Jun 2026 04:11:52 +0200")
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 <e362b49c-521c-4cd5-8963-c17d5770619b@SystematicSW.ab.ca>
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Date: Mon, 01 Jun 2026 07:04:59 +0200
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From: ASSI via Cygwin <cygwin@cygwin.com>
Reply-To: ASSI <Stromeko@nexgo.de>
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Thomas Wolff via Cygwin writes:
> You explain what I had already conceded before, that I had overlooked
> the prototype and the intended functionality did not work:
>   printf("%d\n", wcwidth(0x13000));  // should be 1
>   printf("%d\n", wcwidth(0x1F500));  // should be 2
>
> So why not establish that functionality with an easy tweak that does
> not interfere with anything?

Which part of "you must not change a standard public API" is unclear to
you?  Especially when it would make things binary incompatible?
WCHAR_MAX is 0xffffu on Cygwin, so the above is illegal input to
wcwidth and it never worked.


Regards,
Achim.
-- 
+<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+

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