params: 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-rc1/process/deprecated.html#zero-length-and-one-element-arrays

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>

diff --git a/kernel/params.c b/kernel/params.c
index 3835fb82c64bda060af746930350e3d40529a86a..164d79330849a0a3c213b2802ac41b02eb96f5a6 100644 (file)
--- a/kernel/params.c
+++ b/kernel/params.c
@@ -530,7 +530,7 @@ struct module_param_attrs
 {
        unsigned int num;
        struct attribute_group grp;
-       struct param_attribute attrs[0];
+       struct param_attribute attrs[];
 };
 
 #ifdef CONFIG_SYSFS