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Message-ID: <hm3lxgfzjhxigj5no5csubdo6kolvdjwyhpveirbzptcdbmcag@tqunw2rllae4>
Date: Tue, 1 Jul 2025 21:27:24 -0700
From: Dmitry Torokhov <dmitry.torokhov@...il.com>
To: linux-kernel@...r.kernel.org
Cc: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH] lib/vsprintf: include stdarg.h from sprintf.h to provide
 va_list

Declarations in sprintf.h use va_list so it needs to include stdarg.h,
otherwise we may be getting warnings like this:

./include/linux/sprintf.h:11:54: error: type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int [-Wimplicit-int]
   11 | __printf(2, 0) int vsprintf(char *buf, const char *, va_list);
      |                                                      ^
      |                                                      int

Fixes: 39ced19b9e60 ("lib/vsprintf: split out sprintf() and friends")
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
---

Can I take it through my tree if acked?

 include/linux/sprintf.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/sprintf.h b/include/linux/sprintf.h
index 51cab2def9ec..9ec0033f4106 100644
--- a/include/linux/sprintf.h
+++ b/include/linux/sprintf.h
@@ -3,6 +3,7 @@
 #define _LINUX_KERNEL_SPRINTF_H_
 
 #include <linux/compiler_attributes.h>
+#include <linux/stdarg.h>
 #include <linux/types.h>
 
 int num_to_str(char *buf, int size, unsigned long long num, unsigned int width);
-- 
2.50.0.727.gbf7dc18ff4-goog


-- 
Dmitry

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