based on microsoft's description,the direct convert from FILETIME struct to __int64 is unsafe.

via http://technet.microsoft.com/en-us/library/ms724284(v=vs.85).aspx

"Do not cast a pointer to a FILETIME structure to either a
ULARGE_INTEGER* or __int64* value because it can cause alignment faults on 64-bit Windows."

win32/time.c

@@ -1,4 +1,3 @@
-
 /*****************************************************************************
  *                                                                           *
  * DH_TIME.C                                                                 *
@@ -37,10 +36,21 @@ int getfilesystemtime(struct timeval *time_Info)
 {
 FILETIME ft;
 __int64 ff;
+ULARGE_INTEGER convFromft;
 
     GetSystemTimeAsFileTime(&ft);   /* 100 ns blocks since 01-Jan-1641 */
                                     /* resolution seems to be 0.01 sec */ 
-    ff = *(__int64*)(&ft);
+    /* ff = *(__int64*)(&ft); */
+    /*
+            Do not cast a pointer to a FILETIME structure to either a 
+            ULARGE_INTEGER* or __int64* value because it can cause alignment faults on 64-bit Windows.
+            
+            via  http://technet.microsoft.com/en-us/library/ms724284(v=vs.85).aspx
+     */
+    convFromft.HighPart = ft.dwHighDateTime;
+    convFromft.LowPart = ft.dwLowDateTime;
+    ff = convFromft.QuadPart;
+    
     time_Info->tv_sec = (int)(ff/(__int64)10000000-(__int64)11644473600);
     time_Info->tv_usec = (int)(ff % 10000000)/10;
     return 0;