Index: gui_w32.c
===================================================================
RCS file: /cvsroot/vim/vim7/src/gui_w32.c,v
retrieving revision 1.45
diff -u -r1.45 gui_w32.c
--- gui_w32.c	6 May 2007 13:23:02 -0000	1.45
+++ gui_w32.c	8 May 2007 10:48:15 -0000
@@ -232,6 +232,7 @@
     LPARAM     lParam;
 } NMTTDISPINFO_NEW;
 
+#ifndef __GNUC__
 #ifndef LPNMTTDISPINFO
 typedef struct tagNMTTDISPINFOA {
     NMHDR	hdr;
@@ -252,6 +253,7 @@
     LPARAM	lParam;
 } NMTTDISPINFOW, *LPNMTTDISPINFOW;
 #endif
+#endif
 
 #include <poppack.h>