GNU bug report logs - #32463
27.0.50; (logior -1) => 4611686018427387903

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Package: emacs;

Reported by: Katsumi Yamaoka <yamaoka <at> jpl.org>

Date: Fri, 17 Aug 2018 03:31:02 UTC

Severity: normal

Found in version 27.0.50

Done: Glenn Morris <rgm <at> gnu.org>

Bug is archived. No further changes may be made.

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Message #119 received at 32463 <at> debbugs.gnu.org (full text, mbox):

From: Tom Tromey <tom <at> tromey.com>
To: Paul Eggert <eggert <at> cs.ucla.edu>
Cc: Andy Moreton <andrewjmoreton <at> gmail.com>, 32463 <at> debbugs.gnu.org
Subject: Re: bug#32463: 27.0.50; (logior -1) => 4611686018427387903
Date: Wed, 22 Aug 2018 10:56:56 -0600

>>>>> "Paul" == Paul Eggert <eggert <at> cs.ucla.edu> writes:

Paul> My bigger concern is memory management, along with integer overflow in
Paul> size or bitcount calculation. Copies are made of bignums when not
Paul> needed

One idea is to change make_number to take ownership of the passed-in mpz_t.
I didn't do this because it makes the API confusing to use (I put in a
comment to this effect) but perhaps efficiency outweighs this; and
anyway the function could be renamed to make this more clear.

Tom
This bug report was last modified 6 years and 320 days ago.

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