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List: linux-wireless
Subject: Re: [PATCH v2 3/5] treewide: Replace 0-element memcpy() destinations with flexible arrays
From: Keith Packard <keithp () keithp ! com>
Date: 2021-08-26 5:24:18
Message-ID: 87r1egpym5.fsf () keithp ! com
[Download RAW message or body]
Kees Cook <keescook@chromium.org> writes:
> In some cases, use of the flex_array() helper is needed when a flexible
> array is part of a union.
The code below seems to show that the helper is also needed when the
flexible array is the only member of a struct? Or is this just an
extension of the 'part of a union' clause?
> @@ -160,7 +160,7 @@ struct bmi_cmd {
>
> union bmi_resp {
> struct {
> - u8 payload[0];
> + DECLARE_FLEX_ARRAY(u8, payload);
> } read_mem;
> struct {
> __le32 result;
--
-keith
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