Jacek Caban : include: Use __builtin_offsetof on Clang.

[Alexandre Julliard]

Module: wine
Branch: oldstable
Commit: d1d979bf914f9d9d348bf1f2da32471944729fe2
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=d1d979bf914f9d9d348bf1f2da32471944729fe2

Author: Jacek Caban <jacek at codeweavers.com>
Date:   Thu Oct  7 16:27:22 2021 +0200

include: Use __builtin_offsetof on Clang.

Fixes a number of warning on MSVC target.

Signed-off-by: Jacek Caban <jacek at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>
(cherry picked from commit de9982f069e576b6aaebd96383af263584eedb03)
Signed-off-by: Michael Stefaniuc <mstefani at winehq.org>

---

 include/msvcrt/stddef.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/msvcrt/stddef.h b/include/msvcrt/stddef.h
index 8d946e5aedf..b3fdaf0c052 100644
--- a/include/msvcrt/stddef.h
+++ b/include/msvcrt/stddef.h
@@ -20,7 +20,7 @@
 
 #include <corecrt.h>
 
-#ifdef __GNUC__
+#if defined(__GNUC__) || defined(__clang__)
 #define offsetof(s,m)       __builtin_offsetof(s,m)
 #elif defined(_WIN64)
 #define offsetof(s,m)       (size_t)((ptrdiff_t)&(((s*)NULL)->m))