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Re: Arithmetic range error

From: Robert Pluim
Subject: Re: Arithmetic range error
Date: Fri, 08 Feb 2019 14:34:29 +0100

Eli Zaretskii <address@hidden> writes:

>> From: Robert Pluim <address@hidden>
>> Date: Fri, 08 Feb 2019 14:15:15 +0100
>> Cc: address@hidden
>> > most-positive-fixnum:
>> > 536870911
>> >
>> And that shows that Iʼd forgotten about the tag bits in emacs
>> integers. 'floor' is trying to convert 1549541220, which is greater
>> than your most-positive-fixnum.
>> You can either switch to a 64 bit platform, or try rebuilding emacs
>> with '--wide-int', which will attempt to use 62 bit integers (or
>> switch to the unreleased emacs-27, which has essentially unbounded
>> integers).
> All true, but we still didn't drop support for 32-bit platforms
> without wide-int (and don't plan to do so any time soon), so we should
> fix this for those platforms' sake.

The problem comes from org's desire to have the ctime as a single
integer. Reverting the commit that changed org to use 'floor' will
just result in truncation (but people might not care about that, since
weʼd be dropping the high bits of the timestamp). Ideally org would
handle the list form of timestamps, but thatʼs something for org
developers to decide.


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