--- lwlib/lwlib-Xaw.c
+++ lwlib/lwlib-Xaw.c
@@ -601,11 +601,11 @@
 xaw_create_scrollbar (instance)
      widget_instance *instance;
 {
+  Widget scrollbar = (Widget)0;
 #if 0
   Arg av[20];
   int ac = 0;
   Dimension width;
-  Widget scrollbar;
 
   XtVaGetValues (instance->parent, XtNwidth, &width, NULL);
   
@@ -632,8 +632,8 @@
   XtAddCallback (scrollbar, "scrollProc", xaw_scrollbar_scroll,
 		 (XtPointer) instance);
 
-  return scrollbar;
 #endif
+  return scrollbar;
 }
 
 static Widget
--- src/keyboard.c
+++ src/keyboard.c
@@ -1317,6 +1317,7 @@
      Lisp_Object arg;
 {
   cancel_hourglass ();
+  return Qnil;
 }
 #endif
 
--- src/syntax.c
+++ src/syntax.c
@@ -2409,6 +2409,7 @@
 			 Fcons (make_number (from), Qnil))));
 
   /* NOTREACHED */
+  return Qnil;
 }
 
 DEFUN ("scan-lists", Fscan_lists, Sscan_lists, 3, 3, 0,
--- src/xmenu.c
+++ src/xmenu.c
@@ -695,8 +695,8 @@
   Lisp_Object keymap, tem;
   int xpos = 0, ypos = 0;
   Lisp_Object title;
-  char *error_name;
-  Lisp_Object selection;
+  char *error_name = (char*)0;
+  Lisp_Object selection = (Lisp_Object)0;
   struct frame *f = NULL;
   Lisp_Object x, y, window;
   int keymaps = 0;
@@ -972,8 +972,8 @@
 #else
   {
     Lisp_Object title;
-    char *error_name;
-    Lisp_Object selection;
+    char *error_name = (char*)0;
+    Lisp_Object selection = (Lisp_Object)0;
 
     /* Decode the dialog items from what was specified.  */
     title = Fcar (contents);