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Re: [PATCH v2] xen/xenbus: fix W=1 build warning in xenbus_va_dev_error function
- To: jiang.peng9@xxxxxxxxxx
- From: Jürgen Groß <jgross@xxxxxxxx>
- Date: Fri, 20 Jun 2025 11:50:08 +0200
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- Cc: sstabellini@xxxxxxxxxx, oleksandr_tyshchenko@xxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, xu.xin16@xxxxxxxxxx, yang.yang29@xxxxxxxxxx
- Delivery-date: Fri, 20 Jun 2025 09:50:13 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 20.06.25 02:41, jiang.peng9@xxxxxxxxxx wrote:
From: Peng Jiang <jiang.peng9@xxxxxxxxxx>
This patch fixes a W=1 format-string warning reported by GCC 12.3.0
by annotating xenbus_switch_fatal() and xenbus_va_dev_error()
with the __printf attribute. The attribute enables compile-time
validation of printf-style format strings in these functions.
The original warning trace:
drivers/xen/xenbus/xenbus_client.c:304:9: warning: function
'xenbus_va_dev_error' might be
a candidate for 'gnu_printf' format attribute [-Wsuggest-attribute=format]
Signed-off-by: Peng Jiang <jiang.peng9@xxxxxxxxxx>
Reviewed-by: Juergen Gross <jgross@xxxxxxxx>
Juergen
PS: Next time please don't send another version of a patch as a reply,
but as a new email thread.
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