From f18793b096e69c7acfce66cded483ba9fc01762a Mon Sep 17 00:00:00 2001 From: Stefan Hajnoczi Date: Thu, 14 Jun 2018 17:44:31 +0100 Subject: compiler: add a sizeof_field() macro Determining the size of a field is useful when you don't have a struct variable handy. Open-coding this is ugly. This patch adds the sizeof_field() macro, which is similar to typeof_field(). Existing instances are updated to use the macro. Signed-off-by: Stefan Hajnoczi Reviewed-by: John Snow Message-id: 20180614164431.29305-1-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi --- hw/net/virtio-net.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'hw/net/virtio-net.c') diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 90502fca7c..f154756e85 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -46,7 +46,7 @@ * 'container'. */ #define endof(container, field) \ - (offsetof(container, field) + sizeof(((container *)0)->field)) + (offsetof(container, field) + sizeof_field(container, field)) typedef struct VirtIOFeature { uint64_t flags; -- cgit 1.4.1