From: Andreas Schwab <schwab@suse.de>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: emacs-devel@gnu.org
Subject: Re: What's the specification for sxhash?
Date: Thu, 06 Jun 2019 16:45:49 +0200 [thread overview]
Message-ID: <mvm1s066aci.fsf@suse.de> (raw)
In-Reply-To: <jwvblzag9pf.fsf-monnier+emacs@gnu.org> (Stefan Monnier's message of "Thu, 06 Jun 2019 08:52:47 -0400")
On Jun 06 2019, Stefan Monnier <monnier@iro.umontreal.ca> wrote:
> In practice they're fairly stable across sessions, but they depend for
> example on the size of fixnums, so they're different in a 32bit build of
> Emacs and a 64bit build of Emacs. And we don't guarantee that they
> don't change from one version to another.
For some types the hash uses the address of the object, so it is likely
to differ even between runs of the same binary.
Andreas.
--
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE 1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."
next prev parent reply other threads:[~2019-06-06 14:45 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-06 7:55 What's the specification for sxhash? Philippe Schnoebelen
2019-06-06 12:52 ` Stefan Monnier
2019-06-06 14:45 ` Andreas Schwab [this message]
2019-06-06 15:04 ` Philippe Schnoebelen
2019-06-06 15:14 ` Andreas Schwab
2019-06-06 15:30 ` Stefan Monnier
2019-06-07 6:43 ` Philippe Schnoebelen
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