From: Junio C Hamano <gitster@pobox.com>
To: Michael Haggerty <mhagger@alum.mit.edu>
Cc: Jeff King <peff@peff.net>, Thomas Rast <tr@thomasrast.ch>,
"brian m. carlson" <sandals@crustytoothpaste.net>,
git@vger.kernel.org, Jens Lehmann <Jens.Lehmann@web.de>,
John Keeping <john@keeping.me.uk>,
Guillaume Gelin <contact@ramnes.eu>
Subject: Re: [PATCH] mv: prevent mismatched data when ignoring errors.
Date: Tue, 18 Mar 2014 15:31:26 -0700 [thread overview]
Message-ID: <xmqqtxav5ebl.fsf@gitster.dls.corp.google.com> (raw)
In-Reply-To: <53270FC2.2030701@alum.mit.edu> (Michael Haggerty's message of "Mon, 17 Mar 2014 16:07:46 +0100")
Michael Haggerty <mhagger@alum.mit.edu> writes:
> I had recently been thinking along the same lines. In many of the
> potential callers that I noticed, ALLOC_GROW() was used immediately
> before making space in the array for a new element. So I suggest
> something more like
>
> +#define MOVE_DOWN(array, nr, at, count) \
> + memmove((array) + (at) + (count), \
> + (array) + (at), \
> + sizeof((array)[0]) * ((nr) - (at)))
> +#define ALLOC_INSERT_GAP(array, nr, at, count, alloc) \
> + do { \
> + ALLOC_GROW((array), (nr) + (count), (alloc)); \
> + MOVE_DOWN((array), (nr), (at), (count)); \
> + } while (0)
>
> Also, count==1 is so frequent that this special case might deserve its
> own macro pair.
Yeah, probably.
> I'm not inspired by these macro names, though.
Me neither, about ups and downs.
Peff's suggestion to name these around the concept of "gap" sounded
sensible.
next prev parent reply other threads:[~2014-03-18 22:31 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-08 16:23 git 1.9.0 segfault Guillaume Gelin
2014-03-08 16:46 ` brian m. carlson
2014-03-08 18:12 ` John Keeping
2014-03-08 18:35 ` [PATCH] builtin/mv: fix out of bounds write John Keeping
2014-03-08 19:15 ` brian m. carlson
2014-03-08 19:29 ` [PATCH v2] " John Keeping
2014-03-08 19:21 ` [PATCH] mv: prevent mismatched data when ignoring errors brian m. carlson
2014-03-11 1:56 ` Jeff King
2014-03-11 2:00 ` brian m. carlson
2014-03-11 21:45 ` Junio C Hamano
2014-03-12 23:21 ` brian m. carlson
2014-03-15 16:05 ` Thomas Rast
2014-03-16 2:00 ` Jeff King
2014-03-16 21:20 ` Junio C Hamano
2014-03-17 6:33 ` Junio C Hamano
2014-03-17 15:07 ` Michael Haggerty
2014-03-17 19:06 ` Eric Sunshine
2014-03-17 22:04 ` Jeff King
2014-03-18 22:31 ` Junio C Hamano [this message]
2014-03-15 18:56 ` [PATCH v2] " brian m. carlson
2014-03-16 2:00 ` Jeff King
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