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Re: [Qemu-devel] [PATCH] replay: Fix build with -Werror=unused-result
From: |
Pavel Dovgalyuk |
Subject: |
Re: [Qemu-devel] [PATCH] replay: Fix build with -Werror=unused-result |
Date: |
Wed, 21 Sep 2016 08:17:24 +0300 |
> From: Felipe Franciosi [mailto:address@hidden
> If compiling with -Werror=unused-result, replay-internal.c won't build
> due to a call to fwrite() where the returned value is ignored. A simple
> cast to (void) is not sufficient on recent GCCs, so this fixes it.
>
> Signed-off-by: Felipe Franciosi <address@hidden>
> ---
> replay/replay-internal.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/replay/replay-internal.c b/replay/replay-internal.c
> index 5835e8d..6978d76 100644
> --- a/replay/replay-internal.c
> +++ b/replay/replay-internal.c
> @@ -65,7 +65,7 @@ void replay_put_array(const uint8_t *buf, size_t size)
> {
> if (replay_file) {
> replay_put_dword(size);
> - fwrite(buf, 1, size, replay_file);
> + (void)(fwrite(buf, 1, size, replay_file)+1);
> }
> }
This looks very weird.
I think it would be better to check the return value and stop
the simulation in case of error.
Pavel Dovgalyuk
- [Qemu-devel] [PATCH] replay: Fix build with -Werror=unused-result, Felipe Franciosi, 2016/09/21
- Re: [Qemu-devel] [PATCH] replay: Fix build with -Werror=unused-result,
Pavel Dovgalyuk <=
- Re: [Qemu-devel] [PATCH] replay: Fix build with -Werror=unused-result, Markus Armbruster, 2016/09/21
- Re: [Qemu-devel] [PATCH] replay: Fix build with -Werror=unused-result, Felipe Franciosi, 2016/09/21
- Re: [Qemu-devel] [PATCH] replay: Fix build with -Werror=unused-result, Pavel Dovgalyuk, 2016/09/21
- Re: [Qemu-devel] [PATCH] replay: Fix build with -Werror=unused-result, Daniel P. Berrange, 2016/09/21
- Re: [Qemu-devel] [PATCH] replay: Fix build with -Werror=unused-result, Felipe Franciosi, 2016/09/21
- Re: [Qemu-devel] [PATCH] replay: Fix build with -Werror=unused-result, Felipe Franciosi, 2016/09/21
- Re: [Qemu-devel] [PATCH] replay: Fix build with -Werror=unused-result, Markus Armbruster, 2016/09/21
- Re: [Qemu-devel] [PATCH] replay: Fix build with -Werror=unused-result, Eric Blake, 2016/09/21
- Re: [Qemu-devel] [PATCH] replay: Fix build with -Werror=unused-result, Felipe Franciosi, 2016/09/21
- Re: [Qemu-devel] [PATCH] replay: Fix build with -Werror=unused-result, Daniel P. Berrange, 2016/09/21