--- pg_buffercache_pages.c.orig	Sun Mar 13 04:36:24 2005
+++ pg_buffercache_pages.c	Wed Mar 16 20:57:52 2005
@@ -17,6 +17,11 @@
 
 #define NUM_BUFFERCACHE_PAGES_ELEM	6
 
+#ifdef WIN32
+extern DLLIMPORT BufferDesc		*BufferDescriptors;
+extern DLLIMPORT volatile uint32	InterruptHoldoffCount;
+#endif
+
 
 /*
  * Record structure holding the to be exposed cache data.