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Subject: [PATCH 04/11] UAPI: bcache: Fix use of embedded flexible array
From:   David Howells <dhowells@redhat.com>
To:     linux-api@vger.kernel.org, linux-kbuild@vger.kernel.org
Cc:     Coly Li <colyli@suse.de>,
        Kent Overstreet <kent.overstreet@gmail.com>,
        linux-bcache@vger.kernel.org, linux-kernel@vger.kernel.org,
        dhowells@redhat.com
Date:   Wed, 05 Sep 2018 16:55:03 +0100
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The bkey struct defined by bcache is embedded in the jset struct.  However,
this is illegal in C++ as there's a "flexible array" at the end of the
struct.  Change this to be a 0-length struct instead.

Signed-off-by: David Howells <dhowells@redhat.com>
cc: Coly Li <colyli@suse.de>
cc: Kent Overstreet <kent.overstreet@gmail.com>
cc: linux-bcache@vger.kernel.org
---

 include/uapi/linux/bcache.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/uapi/linux/bcache.h b/include/uapi/linux/bcache.h
index 5d4f58e059fd..11863e903bff 100644
--- a/include/uapi/linux/bcache.h
+++ b/include/uapi/linux/bcache.h
@@ -23,7 +23,7 @@ static inline void SET_##name(type *k, __u64 v)			\
 struct bkey {
 	__u64	high;
 	__u64	low;
-	__u64	ptr[];
+	__u64	ptr[0];
 };
 
 #define KEY_FIELD(name, field, offset, size)				\