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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: Suspicious warning in W64 build
Date: Thu, 07 Sep 2017 21:58:54 +0300
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To: Richard Copley <rcopley@gmail.com>
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> From: Richard Copley <rcopley@gmail.com>
> Date: Thu, 7 Sep 2017 18:52:35 +0100
> Cc: Eli Zaretskii <eliz@gnu.org>, Emacs Development <emacs-devel@gnu.org>
> 
> 18446744065119617024 is 1<<64.
> The other number is (1<<64) - (1<<33) - (1<<2).

Yes, I know.  I just don't understand why GCC things that

   nglyphs * sizeof (WORD) * 2

can have a value in this range.  The type of nglyphs is 'int', and
sizeof(WORD) gives 2.  So the range should be between 0 (or 4) and 4
times INT_MAX, which is nowhere near the values GCC displays.