[PATCH 2/3] include: Define CONTAINING_RECORD using FIELD_OFFSET

[Amine Khaldi]

This prevents the undefined behavior (null pointer dereference)
diagnostics (clang with ubsan checks for example).

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

diff --git a/include/winnt.h b/include/winnt.h
index a3b996a..3765705 100644
--- a/include/winnt.h
+++ b/include/winnt.h
@@ -754,7 +754,7 @@ typedef struct _MEMORY_BASIC_INFORMATION
 #endif
 
 #define CONTAINING_RECORD(address, type, field) \
-  ((type *)((PCHAR)(address) - (PCHAR)(&((type *)0)->field)))
+  ((type *)((PCHAR)(address) - FIELD_OFFSET(type, field)))
 
 /* Types */
 
--
1.8.0