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From: Richard Henderson <richard.henderson@linaro.org>
To: Eric Blake <eblake@redhat.com>,
	Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org
Subject: Re: [PATCH 01/11] nbd/server: Remove unused variable
Date: Tue, 13 Jul 2021 06:54:31 -0700	[thread overview]
Message-ID: <d431966e-de56-02f5-bec8-5fa3a7091b19@linaro.org> (raw)
In-Reply-To: <20210713131438.hx2gp6v2jc2qvba3@redhat.com>

On 7/13/21 6:14 AM, Eric Blake wrote:
> Hmm; in glib 2.68.2 (on Fedora 34), g_autofree does NOT include an
> attribute unused.  Thus, does this silence the compiler?  (Even cooler
> would be making the comment a link to an actual bug in the clang
> database, but I couldn't quickly find one)
> 
> diff --git i/nbd/server.c w/nbd/server.c
> index b60ebc3ab6ac..393cbd81c57a 100644
> --- i/nbd/server.c
> +++ w/nbd/server.c
> @@ -973,7 +973,8 @@ static int nbd_negotiate_meta_queries(NBDClient *client,
>   {
>       int ret;
>       g_autofree char *export_name = NULL;
> -    g_autofree bool *bitmaps = NULL;
> +    /* G_GNUC_UNUSED needed to work around a clang bug */
> +    g_autofree G_GNUC_UNUSED bool *bitmaps = NULL;

That works.  I found

   https://bugs.llvm.org/show_bug.cgi?id=3888

and gave it a nudge.


r~


  reply	other threads:[~2021-07-13 14:24 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-12 21:55 [PATCH 00/11] Fixes for clang-13 plus tcg/ppc Richard Henderson
2021-07-12 21:55 ` [PATCH 01/11] nbd/server: Remove unused variable Richard Henderson
2021-07-13  9:27   ` Vladimir Sementsov-Ogievskiy
2021-07-13 13:01     ` Eric Blake
2021-07-13 13:14       ` Eric Blake
2021-07-13 13:54         ` Richard Henderson [this message]
2021-07-12 21:55 ` [PATCH 02/11] accel/tcg: Remove unused variable in cpu_exec Richard Henderson
2021-07-13 16:27   ` Philippe Mathieu-Daudé
2021-07-12 21:55 ` [PATCH 03/11] util/selfmap: Discard mapping on error Richard Henderson
2021-07-13 16:06   ` Eric Blake
2021-07-13 17:10     ` Richard Henderson
2021-07-12 21:55 ` [PATCH 04/11] net/checksum: Remove unused variable in net_checksum_add_iov Richard Henderson
2021-07-12 21:55 ` [PATCH 05/11] hw/audio/adlib: Remove unused variable in adlib_callback Richard Henderson
2021-07-13 16:31   ` Philippe Mathieu-Daudé
2021-07-12 21:55 ` [PATCH 06/11] hw/ppc/spapr_events: Remove unused variable from check_exception Richard Henderson
2021-07-13  0:05   ` David Gibson
2021-07-12 21:55 ` [PATCH 07/11] hw/pci-hist/pnv_phb4: Fix typo in pnv_phb4_ioda_write Richard Henderson
2021-07-13  0:06   ` David Gibson
2021-07-12 21:55 ` [PATCH 08/11] linux-user/syscall: Remove unused variable from execve Richard Henderson
2021-07-13 13:57   ` Laurent Vivier
2021-07-12 21:55 ` [PATCH 09/11] tests/unit: Remove unused variable from test_io Richard Henderson
2021-07-13 16:30   ` Philippe Mathieu-Daudé
2021-07-12 21:55 ` [PATCH 10/11] tcg/ppc: Replace TCG_TARGET_CALL_DARWIN with _CALL_DARWIN Richard Henderson
2021-07-12 21:55 ` [PATCH 11/11] tcg/ppc: Ensure _CALL_SYSV is set for 32-bit ELF Richard Henderson
2021-08-14  5:27 ` [PATCH 00/11] Fixes for clang-13 plus tcg/ppc Brad Smith

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