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printk: ringbuffer: Replace zero-length array with flexible-array member

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There is a regular need in the kernel to provide a way to declare having a
dynamically sized set of trailing elements in a structure. Kernel code should
always use “flexible array members”[1] for these cases. The older style of
one-element or zero-length arrays should no longer be used[2].

[1] https://en.wikipedia.org/wiki/Flexible_array_member
[2] https://www.kernel.org/doc/html/v5.9/process/deprecated.html#zero-length-and-one-element-arrays

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
This commit is contained in:
Gustavo A. R. Silva 2020-10-27 13:50:19 -05:00
parent 7206d58a3a
commit a38283da05
1 changed files with 1 additions and 1 deletions
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kernel/printk/printk_ringbuffer.c
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@ -345,7 +345,7 @@ DESC_ID((id) - DESCS_COUNT(desc_ring))
*/ */
struct prb_data_block { struct prb_data_block {
unsigned long id; unsigned long id;
char data[0]; char data[];
}; };
/* /*