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xen: Replace one-element array with flexible-array member

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One-element arrays are deprecated, and we are replacing them with flexible
array members instead. So, replace one-element array with flexible-array
member in struct xen_page_directory.

This helps with the ongoing efforts to tighten the FORTIFY_SOURCE
routines on memcpy() and help us make progress towards globally
enabling -fstrict-flex-arrays=3 [1].

This results in no differences in binary output.

Link: https://github.com/KSPP/linux/issues/79
Link: https://github.com/KSPP/linux/issues/255
Link: https://gcc.gnu.org/pipermail/gcc-patches/2022-October/602902.html [1]
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/Y9xjN6Wa3VslgXeX@work
Signed-off-by: Juergen Gross <jgross@suse.com>
This commit is contained in:
Gustavo A. R. Silva 2023-02-02 19:28:23 -06:00 committed by Juergen Gross
parent 2062f9fb64
commit 9a0450ada8
1 changed files with 1 additions and 1 deletions
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2
drivers/xen/xen-front-pgdir-shbuf.c
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@ -30,7 +30,7 @@
struct xen_page_directory {
grant_ref_t gref_dir_next_page;
#define XEN_GREF_LIST_END 0
grant_ref_t gref[1]; /* Variable length */
grant_ref_t gref[]; /* Variable length */
};
/**