Re: [PATCH] xen/mcelog: Add __nonstring annotations for unterminated strings

From: Jürgen Groß
Date: Tue Mar 11 2025 - 03:36:37 EST


On 10.03.25 23:22, Kees Cook wrote:
When a character array without a terminating NUL character has a static
initializer, GCC 15's -Wunterminated-string-initialization will only
warn if the array lacks the "nonstring" attribute[1]. Mark the arrays
with __nonstring to and correctly identify the char array as "not a C
string" and thereby eliminate the warning.

Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117178 [1]
Cc: Juergen Gross <jgross@xxxxxxxx>
Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>
Cc: Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>
Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx
Signed-off-by: Kees Cook <kees@xxxxxxxxxx>

Acked-by: Juergen Gross <jgross@xxxxxxxx>


Juergen

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