linux-kernel - [PATCH] um: include sys/types.h instead of stddef.h for size

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Date:   Wed, 13 Jul 2022 12:00:29 +0200
From:   "Jason A. Donenfeld" <Jason@...c4.com>
To:     Johannes Berg <johannes@...solutions.net>,
        linux-um@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     "Jason A. Donenfeld" <Jason@...c4.com>
Subject: [PATCH] um: include sys/types.h instead of stddef.h for size_t

Usually size_t comes from sys/types.h, not stddef.h. This code likely
worked only because something else in its usage chain was pulling in
sys/types.h.

Cc: Johannes Berg <johannes@...solutions.net>
Signed-off-by: Jason A. Donenfeld <Jason@...c4.com>
---
 arch/um/include/shared/user.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/um/include/shared/user.h b/arch/um/include/shared/user.h
index dd4badffdeb3..a0a8f0d19a85 100644
--- a/arch/um/include/shared/user.h
+++ b/arch/um/include/shared/user.h
@@ -13,21 +13,21 @@
  * fancier, type-safe, definition.  Using that one would require
  * copying too much infrastructure for my taste, so userspace files
  * get less checking than kernel files.
  */
 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
 
 /* This is to get size_t */
 #ifndef __UM_HOST__
 #include <linux/types.h>
 #else
-#include <stddef.h>
+#include <sys/types.h>
 #endif
 
 extern void panic(const char *fmt, ...)
 	__attribute__ ((format (printf, 1, 2)));
 
 /* Requires preincluding include/linux/kern_levels.h */
 #define UM_KERN_EMERG	KERN_EMERG
 #define UM_KERN_ALERT	KERN_ALERT
 #define UM_KERN_CRIT	KERN_CRIT
 #define UM_KERN_ERR	KERN_ERR
-- 
2.35.1