From: Jeff King <peff@peff.net>
To: Jonathan Tan <jonathantanmy@google.com>
Cc: git@vger.kernel.org, "Junio C Hamano" <gitster@pobox.com>,
"Martin Ågren" <martin.agren@gmail.com>,
"Stefan Beller" <sbeller@google.com>,
"Ramsay Jones" <ramsay@ramsayjones.plus.com>
Subject: Re: [PATCH v2 10/10] add UNLEAK annotation for reducing leak false positives
Date: Tue, 19 Sep 2017 17:03:01 -0400 [thread overview]
Message-ID: <20170919210300.cbrdjqor6xuwd7bs@sigill.intra.peff.net> (raw)
In-Reply-To: <20170919134552.7845f021@twelve2.svl.corp.google.com>
On Tue, Sep 19, 2017 at 01:45:52PM -0700, Jonathan Tan wrote:
> The following comments are assuming that we're going to standardize on
> UNLEAK(var); (with the semicolon).
Yeah, I assumed we would. We don't have to, since this really is sort-of
magical, but I think the code looks better with it.
> On Fri, 8 Sep 2017 02:38:41 -0400
> Jeff King <peff@peff.net> wrote:
>
> > +#ifdef SUPPRESS_ANNOTATED_LEAKS
> > +extern void unleak_memory(const void *ptr, size_t len);
> > +#define UNLEAK(var) unleak_memory(&(var), sizeof(var));
>
> I would feel better if the semicolon was omitted. I don't think it
> matters in this particular case, though.
You end up with a double semi-colon. Some linters might complain.
> > +#else
> > +#define UNLEAK(var)
>
> I think this should be defined to be something (for example, "do {}
> while (0)"), at least so that we have compiler errors when UNLEAK(var)
> is used incorrectly (for example, without the semicolon) when
> SUPPRESS_ANNOTATED_LEAKS is not defined.
Seems reasonable.
I think both are worth doing, but the patch is already in next so we
need to do it on top. Do you want to prepare a patch?
-Peff
next prev parent reply other threads:[~2017-09-19 21:03 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-05 13:01 [PATCH 0/10] towards clean leak-checker output Jeff King
2017-09-05 13:03 ` [PATCH 01/10] test-lib: --valgrind should not override --verbose-log Jeff King
2017-09-05 13:04 ` [PATCH 02/10] test-lib: set LSAN_OPTIONS to abort by default Jeff King
2017-09-05 13:04 ` [PATCH 03/10] add: free leaked pathspec after add_files_to_cache() Jeff King
2017-09-05 13:04 ` [PATCH 04/10] update-index: fix cache entry leak in add_one_file() Jeff King
2017-09-05 13:04 ` [PATCH 05/10] config: plug user_config leak Jeff King
2017-09-05 13:04 ` [PATCH 06/10] reset: make tree counting less confusing Jeff King
2017-09-05 13:04 ` [PATCH 07/10] reset: free allocated tree buffers Jeff King
2017-09-05 13:04 ` [PATCH 08/10] repository: free fields before overwriting them Jeff King
2017-09-05 13:05 ` [PATCH 09/10] set_git_dir: handle feeding gitdir to itself Jeff King
2017-09-07 19:06 ` Brandon Williams
2017-09-05 13:05 ` [PATCH 10/10] add UNLEAK annotation for reducing leak false positives Jeff King
2017-09-05 22:05 ` Stefan Beller
2017-09-07 9:17 ` Jeff King
2017-09-07 20:38 ` Stefan Beller
2017-09-12 14:34 ` Kaartic Sivaraam
2017-09-12 15:05 ` Jeff King
2017-09-13 7:13 ` Kaartic Sivaraam
2017-09-06 17:16 ` Martin Ågren
2017-09-07 9:00 ` Jeff King
2017-09-12 13:41 ` Kaartic Sivaraam
2017-09-12 15:29 ` Jeff King
2017-09-13 6:44 ` Kaartic Sivaraam
2017-09-05 17:50 ` [PATCH 0/10] towards clean leak-checker output Martin Ågren
2017-09-05 19:02 ` Jeff King
2017-09-05 20:41 ` Martin Ågren
2017-09-06 12:39 ` Jeff King
2017-09-06 1:42 ` Junio C Hamano
2017-09-06 12:28 ` [PATCH 0/2] simplifying !RUNTIME_PREFIX Jeff King
2017-09-06 12:30 ` [PATCH 1/2] system_path: move RUNTIME_PREFIX to a sub-function Jeff King
2017-09-06 13:23 ` Johannes Schindelin
2017-09-06 13:27 ` Jeff King
2017-09-06 12:32 ` [PATCH 2/2] git_extract_argv0_path: do nothing without RUNTIME_PREFIX Jeff King
2017-09-08 6:38 ` [PATCH v2 10/10] add UNLEAK annotation for reducing leak false positives Jeff King
2017-09-19 20:45 ` Jonathan Tan
2017-09-19 21:03 ` Jeff King [this message]
2017-09-19 21:34 ` [PATCH for jk/leak-checkers] git-compat-util: make UNLEAK less error-prone Jonathan Tan
2017-09-19 21:46 ` Jeff King
2017-09-19 22:10 ` [PATCH for jk/leak-checkers v2] " Jonathan Tan
2017-09-20 1:45 ` [PATCH v2 10/10] add UNLEAK annotation for reducing leak false positives Junio C Hamano
2017-09-20 2:28 ` Jeff King
2017-09-20 5:12 ` Junio C Hamano
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