From: Paul Eggert <eggert@cs.ucla.edu>
To: Eli Zaretskii <eliz@gnu.org>, Dima Kogan <dima@secretsauce.net>
Cc: 21999@debbugs.gnu.org, deng@randomsample.de
Subject: bug#21999: 25.0.50; Binary with --enable-checking immediately aborts with '0<=size'
Date: Tue, 24 Nov 2015 23:52:57 -0800 [thread overview]
Message-ID: <565568D9.2010005@cs.ucla.edu> (raw)
In-Reply-To: <83bnajz88k.fsf@gnu.org>
Eli Zaretskii wrote:
> After all, the size field of the pseudo-vector object is not
> really a size, but a bunch of bitfields, so I'm not sure testing it in
> its entirety makes sense. Paul?
The point of the eassume is that it improves code quality in the common case
where the size field is actually a size, since the compiler can generate better
code when it knows that sizes are nonnegative. Also, it should improve checking
a bit, in case someone trashes a size field.
Looks like this is more trouble than it's worth, and we should get rid of that
eassume, at least in emacs-25. Or have you fixed it?
next prev parent reply other threads:[~2015-11-25 7:52 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-23 19:52 bug#21999: 25.0.50; Binary with --enable-checking immediately aborts with '0<=size' David Engster
2015-11-23 20:22 ` Eli Zaretskii
2015-11-23 21:05 ` David Engster
2015-11-24 9:55 ` Dima Kogan
2015-11-24 16:12 ` Eli Zaretskii
2015-11-24 16:32 ` David Engster
2020-08-15 6:05 ` Stefan Kangas
2015-11-25 7:52 ` Paul Eggert [this message]
2015-11-25 17:34 ` Eli Zaretskii
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