From: Gustavo A. R. Silva Date: Tue, 27 Oct 2020 18:50:19 +0000 (-0500) Subject: printk: ringbuffer: Replace zero-length array with flexible-array member X-Git-Tag: v5.10-rc2~12^2 X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=a38283da05d321fa1fce38ea3cf41c9f1dbd1f21;p=tomoyo%2Ftomoyo-test1.git printk: ringbuffer: Replace zero-length array with flexible-array member 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 --- diff --git a/kernel/printk/printk_ringbuffer.c b/kernel/printk/printk_ringbuffer.c index 24a960a89aa8..6b1525685277 100644 --- a/kernel/printk/printk_ringbuffer.c +++ b/kernel/printk/printk_ringbuffer.c @@ -345,7 +345,7 @@ DESC_ID((id) - DESCS_COUNT(desc_ring)) */ struct prb_data_block { unsigned long id; - char data[0]; + char data[]; }; /*