Commit b942a520 authored Sep 26, 2022 by Gustavo A. R. Silva

bcache: Replace zero-length arrays with DECLARE_FLEX_ARRAY() helper

Zero-length arrays are deprecated and we are moving towards adopting
C99 flexible-array members, instead. So, replace zero-length arrays
declarations in anonymous union with the new DECLARE_FLEX_ARRAY()
helper macro.

This helper allows for flexible-array members in unions.

Link: https://github.com/KSPP/linux/issues/193
Link: https://github.com/KSPP/linux/issues/213
Link: https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html


Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>

parent 06919d22

drivers/md/bcache/bcache_ondisk.h

+4 −4

Original line number	Diff line number	Diff line
		@@ -359,8 +359,8 @@ struct jset {
		__u64 prio_bucket[MAX_CACHES_PER_SET];

		union {
		struct bkey start[0];
		__u64 d[0];
		DECLARE_FLEX_ARRAY(struct bkey, start);
		DECLARE_FLEX_ARRAY(__u64, d);
		};
		};

		@@ -424,8 +424,8 @@ struct bset {
		__u32 keys;

		union {
		struct bkey start[0];
		__u64 d[0];
		DECLARE_FLEX_ARRAY(struct bkey, start);
		DECLARE_FLEX_ARRAY(__u64, d);
		};
		};