msvcrt: Align struct _stati64's st_size on an 8 byte boundary.

dlls/msvcrt/msvcrt.h

@@ -366,7 +366,7 @@ struct MSVCRT__stati64 {
   short          st_uid;
   short          st_gid;
   MSVCRT__dev_t  st_rdev;
-  __int64        st_size;
+  __int64 DECLSPEC_ALIGN(8) st_size;
   MSVCRT_time_t  st_atime;
   MSVCRT_time_t  st_mtime;
   MSVCRT_time_t  st_ctime;

include/msvcrt/sys/stat.h

@@ -46,6 +46,16 @@ typedef int _off_t;
 #define _OFF_T_DEFINED
 #endif
 
+#ifndef DECLSPEC_ALIGN
+# if defined(_MSC_VER) && (_MSC_VER >= 1300) && !defined(MIDL_PASS)
+#  define DECLSPEC_ALIGN(x) __declspec(align(x))
+# elif defined(__GNUC__)
+#  define DECLSPEC_ALIGN(x) __attribute__((aligned(x)))
+# else
+#  define DECLSPEC_ALIGN(x)
+# endif
+#endif
+
 #define _S_IEXEC  0x0040
 #define _S_IWRITE 0x0080
 #define _S_IREAD  0x0100
@@ -99,7 +109,7 @@ struct _stati64 {
   short          st_uid;
   short          st_gid;
   _dev_t st_rdev;
-  __int64        st_size;
+  __int64 DECLSPEC_ALIGN(8) st_size;
   time_t st_atime;
   time_t st_mtime;
   time_t st_ctime;

include/msvcrt/wchar.h

@@ -43,6 +43,16 @@ typedef unsigned short wchar_t;
 #define _WIN64
 #endif
 
+#ifndef DECLSPEC_ALIGN
+# if defined(_MSC_VER) && (_MSC_VER >= 1300) && !defined(MIDL_PASS)
+#  define DECLSPEC_ALIGN(x) __declspec(align(x))
+# elif defined(__GNUC__)
+#  define DECLSPEC_ALIGN(x) __attribute__((aligned(x)))
+# else
+#  define DECLSPEC_ALIGN(x)
+# endif
+#endif
+
 typedef int mbstate_t;
 
 #ifndef _SIZE_T_DEFINED
@@ -181,7 +191,7 @@ struct _stati64 {
   short          st_uid;
   short          st_gid;
   _dev_t st_rdev;
-  __int64        st_size;
+  __int64 DECLSPEC_ALIGN(8) st_size;
   time_t st_atime;
   time_t st_mtime;
   time_t st_ctime;