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Re: [Emacs-diffs] master dfed333: Remove fixnum restriction on some disp


From: Stefan Monnier
Subject: Re: [Emacs-diffs] master dfed333: Remove fixnum restriction on some display vars
Date: Fri, 24 May 2019 10:32:30 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

>> Rather than convert to bignum, we should either crash or signal
>> a `hallelujah` error, depending on whether you think this is due to
>> a bug or too a supranatural power.
> Crashing would be too strong, as one could then crash Emacs simply via (setq
> tab-width (1+ most-positive-fixnum)).

My comment was specifically about buffer-display-count (which counts
a number of distinct heap objects).  I haven't looked closely at the
other cases, but this one jumped at me as a prime example where a fixnum
is safe.


        Stefan




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