From: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
To: Ramsay Jones <ramsay@ramsayjones.plus.com>
Cc: linux-sparse@vger.kernel.org, Jacob Keller <jacob.e.keller@intel.com>
Subject: Re: [PATCH 00/16] support __packed struct
Date: Mon, 28 Dec 2020 22:33:38 +0100 [thread overview]
Message-ID: <20201228213338.e5tspbe3od27lo4x@ltop.local> (raw)
In-Reply-To: <6a00eea2-7371-de84-05fc-1375603ed7eb@ramsayjones.plus.com>
On Mon, Dec 28, 2020 at 05:18:50PM +0000, Ramsay Jones wrote:
>
>
> On 26/12/2020 17:51, Luc Van Oostenryck wrote:
> > During parsing, Sparse recognizes the attribute 'packed' but this
> > attribute is otherwise ignored for several reasons:
> > 1) the attribute in 'struct __attr { ... }' is wrongly handled as
> > belonging to the whole declaration but it should belong to the type,
> > 2) the attribute in 'struct <name> { ... } __attr;' is simply ignored,
> > 3) the layout of packed bitfields need special care.
> >
> > This series contains 2 parts:
> > 1) handling of type attributes
> > 2) correct layout of packed structs, including packed bitfields.
> >
> >
> > This series is also available for review and testing at:
> > git://git.kernel.org/pub/scm/devel/sparse/sparse-dev.git packed-v2
>
> I left a couple of minor comments, but (apart from patch #16) this
> otherwise LGTM.
>
> Patch #16 also looks good, but I would need to study it a bit more
> than I have time available to be totally happy. It does not seem
> to be handling the 'lowering' of 'odd bit-sized' symbols created in
> the previous patch (to answer my own question), so I would have to
> apply the patches (or fetch the above branch) to study some more.
Well, patch #16 doesn't contain the lowering, it kinda just enables
the last bits to support (without out-of-bound access) packed structures
including packed bitfields.
> Hope you had a good holiday.
Thank you. In truth, it was strange and quiet, very quiet.
I wish you all the best for 2021!
-- Luc
next prev parent reply other threads:[~2020-12-28 23:13 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-26 17:51 [PATCH 00/16] support __packed struct Luc Van Oostenryck
2020-12-26 17:51 ` [PATCH v2 01/16] add testcases for dubious enum values Luc Van Oostenryck
2020-12-26 17:51 ` [PATCH v2 02/16] add testcases for exotic " Luc Van Oostenryck
2020-12-28 16:10 ` Ramsay Jones
2020-12-28 20:00 ` Luc Van Oostenryck
2020-12-26 17:51 ` [PATCH v2 03/16] add testcases for enum attributes Luc Van Oostenryck
2020-12-26 17:51 ` [PATCH v2 04/16] add testcases for type attributes Luc Van Oostenryck
2020-12-28 16:13 ` Ramsay Jones
2020-12-28 19:59 ` Luc Van Oostenryck
2020-12-26 17:51 ` [PATCH v2 05/16] add testcases for packed structures Luc Van Oostenryck
2020-12-28 16:17 ` Ramsay Jones
2020-12-28 20:01 ` Luc Van Oostenryck
2020-12-26 17:51 ` [PATCH v2 06/16] add testcases for packed bitfields Luc Van Oostenryck
2020-12-28 16:28 ` Ramsay Jones
2020-12-28 20:05 ` Luc Van Oostenryck
2020-12-26 17:51 ` [PATCH v2 07/16] apply_ctype: use self-explanatory argument name Luc Van Oostenryck
2020-12-26 17:51 ` [PATCH v2 08/16] apply_ctype: reverse the order of arguments Luc Van Oostenryck
2020-12-28 16:47 ` Ramsay Jones
2020-12-28 20:37 ` Luc Van Oostenryck
2020-12-26 17:51 ` [PATCH v2 09/16] apply_ctype: move up its declaration Luc Van Oostenryck
2020-12-26 17:51 ` [PATCH v2 10/16] struct-attr: prepare to handle attributes at the end of struct definitions (1) Luc Van Oostenryck
2020-12-28 16:54 ` Ramsay Jones
2020-12-28 20:49 ` Luc Van Oostenryck
2020-12-26 17:51 ` [PATCH v2 11/16] struct-attr: prepare to handle attributes at the end of struct definitions (2) Luc Van Oostenryck
2020-12-26 17:51 ` [PATCH v2 12/16] struct-attr: prepare to handle attributes at the end of struct definitions (3) Luc Van Oostenryck
2020-12-26 17:51 ` [PATCH v2 13/16] struct-attr: fix type attribute like 'struct __attr { ... }' Luc Van Oostenryck
2020-12-26 17:51 ` [PATCH v2 14/16] struct-attr: fix: do not ignore struct/union/enum type attributes Luc Van Oostenryck
2020-12-26 17:51 ` [PATCH v2 15/16] packed: no out-of-bound access of packed bitfields Luc Van Oostenryck
2020-12-28 17:10 ` Ramsay Jones
2020-12-28 21:12 ` Luc Van Oostenryck
2020-12-26 17:51 ` [PATCH v2 16/16] packed: add support for __packed struct Luc Van Oostenryck
2020-12-28 17:18 ` [PATCH 00/16] support " Ramsay Jones
2020-12-28 21:33 ` Luc Van Oostenryck [this message]
2021-01-05 17:56 ` Jacob Keller
2021-01-05 20:39 ` Luc Van Oostenryck
2021-01-05 22:07 ` Jacob Keller
2021-01-05 17:55 ` Jacob Keller
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