Index: ada/tracebak.c
===================================================================
--- ada/tracebak.c      (revision 195803)
+++ ada/tracebak.c      (working copy)
@@ -415,7 +415,7 @@ struct layout

 #if defined (__WIN32)
 #include <windows.h>
-#define IS_BAD_PTR(ptr) (IsBadCodePtr((void *)ptr))
+#define IS_BAD_PTR(ptr) (IsBadCodePtr((FARPROC)ptr))
 #elif defined (sun)
 #define IS_BAD_PTR(ptr) ((unsigned long)ptr == -1UL)
 #else