From: Stefan Monnier <monnier@iro.umontreal.ca>
To: emacs-devel@gnu.org
Subject: Re: Checking for loss of information on integer conversion
Date: Sun, 18 Feb 2018 17:41:10 -0500 [thread overview]
Message-ID: <jwvsh9y6i4s.fsf-monnier+gmane.emacs.devel@gnu.org> (raw)
In-Reply-To: 87woza7wwi.fsf@trurl.irif.fr
>> Another possibility would be for Emacs to signal an error when reading any
>> integer that does not fit in fixnum bounds.
> Please do that.
That would be a regression. On 32bit systems, there are various
circumstances where we need to read a 32bit ID (i.e. one that
doesn't fit within our 30bit fixnums), as well as situations where we
read something like a file size which may also fail to fit.
On 64bit systems (and 32bit systems built with wide-ints),
I don't see such a clear need to convert a large integer into a float,
so on those systems I think it's OK to just signal an error.
Stefan "still living in the 32bit world"
next prev parent reply other threads:[~2018-02-18 22:41 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-18 1:27 Checking for loss of information on integer conversion Paul Eggert
[not found] ` <83y3jq9q4m.fsf@gnu.org>
2018-02-18 20:04 ` Paul Eggert
2018-02-18 20:24 ` Eli Zaretskii
2018-02-18 21:52 ` bug#30408: " Drew Adams
2018-02-18 22:31 ` Juliusz Chroboczek
2018-02-18 22:41 ` Stefan Monnier [this message]
2018-02-18 23:46 ` Juliusz Chroboczek
2018-02-19 1:47 ` Stefan Monnier
2018-02-19 2:22 ` Paul Eggert
2018-02-19 3:20 ` Drew Adams
2018-02-19 15:05 ` Richard Stallman
2018-02-22 16:31 ` Juliusz Chroboczek
2018-02-22 17:01 ` Eli Zaretskii
2018-02-22 19:31 ` Stefan Monnier
2018-02-23 9:49 ` Richard Stallman
2018-02-19 6:03 ` John Wiegley
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