DMARC-Filter: OpenDMARC Filter v1.4.2 delorie.com 651565QO3202888
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To: cygwin AT cygwin DOT 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")
References: <a9676834-0368-4a8a-88b0-da5e9483b536 AT towo DOT net>
 <874ikpawdk DOT fsf AT Gerda DOT invalid>
 <8ff2ab8d-dfdc-459c-96f3-ed4a4f451440 AT towo DOT net>
 <0140C1F4-CA22-46DE-AE21-69C5427C59B5 AT unified-streaming DOT com>
 <e94174b7-ea9b-45ca-bfd3-7979ce988920 AT towo DOT net>
 <e362b49c-521c-4cd5-8963-c17d5770619b AT SystematicSW DOT ab DOT ca>
 <fbbeb91a-4c5a-dbe6-1bb3-206cf14a73bc AT wisemo DOT com>
 <4f885156-7772-43d7-ab72-c88f0a7d1e52 AT towo DOT net>
 <112594ad-3c25-4dad-b1bc-071b4951ed98 AT towo DOT net>
 <97f0f3c6-9f2c-429c-aa8e-875b7806b275 AT towo DOT net>
 <8733z9jpfj DOT fsf AT Gerda DOT invalid>
 <b70d8366-8970-4cdc-a693-6d826fe76277 AT towo DOT net>
 <b8c1571a-1956-4316-a6a9-32176b6c7c80 AT towo DOT net>
 <87pl2bab08 DOT fsf AT Gerda DOT invalid>
 <2a39e204-bd8b-4511-bd34-703899600e9e AT towo DOT net>
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 <21ca1d38-7b82-49af-b954-b83141237843 AT towo DOT net>
Date: Mon, 01 Jun 2026 07:04:59 +0200
Message-ID: <8733z626mc.fsf@>
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From: ASSI via Cygwin <cygwin AT cygwin DOT com>
Reply-To: ASSI <Stromeko AT nexgo DOT 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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