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From: Tim Rentsch <tr.17687@z991.linuxsc.com>
Newsgroups: comp.lang.c
Subject: Re: type of decimal constants in msvc
Date: Mon, 22 Dec 2025 05:05:04 -0800
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Keith Thompson <Keith.S.Thompson+u@gmail.com> writes:

> Thiago Adams <thiago.adams@gmail.com> writes:
>
>> Em 19/12/2025 09:15, Keith Thompson escreveu:
>
> [...]
>
>>> gcc's warning for 18408377700990114895 (which is slightly smaller
>>> than 2**64) is "integer constant is so large that it is unsigned".
>>> This is *incorrect* (and I think it's been reported as a bug), but
>>> the incorrect wording of the warning is not a conformance issue.
>>
>> I am not understating why do you think this is a bug?
>> Because it should not compile?
>
> No, because the message is factually incorrect.

No, it isn't.  The message might be misleading but it isn't wrong.

> The integer constant 18408377700990114895 is not of any unsigned type.

The message doesn't say the constant has an unsigned type.  It says
only that the constant is unsigned.