linux-kernel - [PATCH 03/11] UAPI: virtio_net: Fix use of C++ keywords as structural members

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Date:   Wed, 05 Sep 2018 16:54:55 +0100
From:   David Howells <dhowells@...hat.com>
To:     linux-api@...r.kernel.org, linux-kbuild@...r.kernel.org
Cc:     "Michael S. Tsirkin" <mst@...hat.com>,
        Jason Wang <jasowang@...hat.com>,
        virtualization@...ts.linux-foundation.org,
        linux-kernel@...r.kernel.org, dhowells@...hat.com
Subject: [PATCH 03/11] UAPI: virtio_net: Fix use of C++ keywords as
 structural members

The virtio_net_ctrl_hdr struct uses a C++ keyword as structural members.  Fix
this by inserting an anonymous union that provides an alternative name and
then hide the reserved name in C++.

Signed-off-by: David Howells <dhowells@...hat.com>
cc: "Michael S. Tsirkin" <mst@...hat.com>
cc: Jason Wang <jasowang@...hat.com>
cc: virtualization@...ts.linux-foundation.org
---

 include/uapi/linux/virtio_net.h |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/include/uapi/linux/virtio_net.h b/include/uapi/linux/virtio_net.h
index a3715a3224c1..967142bc0e05 100644
--- a/include/uapi/linux/virtio_net.h
+++ b/include/uapi/linux/virtio_net.h
@@ -150,7 +150,12 @@ struct virtio_net_hdr_mrg_rxbuf {
  * command goes in between.
  */
 struct virtio_net_ctrl_hdr {
-	__u8 class;
+	union {
+#ifndef __cplusplus
+		__u8 class;
+#endif
+		__u8 _class;
+	};
 	__u8 cmd;
 } __attribute__((packed));