diff --git a/ncurses/base/lib_addstr.c b/ncurses/base/lib_addstr.c
index 4e3a040..a1a55cb 100644
--- a/ncurses/base/lib_addstr.c
+++ b/ncurses/base/lib_addstr.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 1998-2006,2007 Free Software Foundation, Inc.              *
+ * Copyright (c) 1998-2010,2011 Free Software Foundation, Inc.              *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -44,7 +44,7 @@
 
 #include <curses.priv.h>
 
-MODULE_ID("$Id: lib_addstr.c,v 1.48 2007/10/13 19:56:57 tom Exp $")
+MODULE_ID("$Id: lib_addstr.c,v 1.52 2011/05/28 23:02:09 tom Exp $")
 
 NCURSES_EXPORT(int)
 waddnstr(WINDOW *win, const char *astr, int n)
@@ -52,7 +52,7 @@
     const char *str = astr;
     int code = ERR;
 
-    T((T_CALLED("waddnstr(%p,%s,%d)"), win, _nc_visbufn(astr, n), n));
+    T((T_CALLED("waddnstr(%p,%s,%d)"), (void *) win, _nc_visbufn(astr, n), n));
 
     if (win && (str != 0)) {
 	TR(TRACE_VIRTPUT | TRACE_ATTRS,
@@ -85,7 +85,7 @@
     int i;
     struct ldat *line;
 
-    T((T_CALLED("waddchnstr(%p,%p,%d)"), win, astr, n));
+    T((T_CALLED("waddchnstr(%p,%p,%d)"), (void *) win, (const void *) astr, n));
 
     if (!win)
 	returnCode(ERR);
@@ -107,7 +107,7 @@
     for (i = 0; i < n && ChCharOf(astr[i]) != '\0'; ++i) {
 	SetChar2(line->text[i + x], astr[i]);
     }
-    CHANGED_RANGE(line, x, x + n - 1);
+    CHANGED_RANGE(line, x, (NCURSES_SIZE_T) (x + n - 1));
 
     _nc_synchook(win);
     returnCode(code);
@@ -119,8 +119,10 @@
 _nc_wchstrlen(const cchar_t *s)
 {
     int result = 0;
-    while (CharOf(s[result]) != L'\0') {
-	result++;
+    if (s != 0) {
+	while (CharOf(s[result]) != L'\0') {
+	    result++;
+	}
     }
     return result;
 }
@@ -135,7 +137,10 @@
     struct ldat *line;
     int i, j, start, len, end;
 
-    T((T_CALLED("wadd_wchnstr(%p,%s,%d)"), win, _nc_viscbuf(astr, n), n));
+    T((T_CALLED("wadd_wchnstr(%p,%s,%d)"),
+       (void *) win,
+       _nc_viscbuf(astr, n),
+       n));
 
     if (!win)
 	returnCode(ERR);
@@ -190,7 +195,7 @@
 		    SetWidecExt(line->text[x + j], j);
 		}
 	    }
-	    x += len;
+	    x = (NCURSES_SIZE_T) (x + len);
 	    end += len - 1;
 	} else {
 	    break;
@@ -217,7 +222,7 @@
 {
     int code = ERR;
 
-    T((T_CALLED("waddnwstr(%p,%s,%d)"), win, _nc_viswbufn(str, n), n));
+    T((T_CALLED("waddnwstr(%p,%s,%d)"), (void *) win, _nc_viswbufn(str, n), n));
 
     if (win && (str != 0)) {
 	TR(TRACE_VIRTPUT | TRACE_ATTRS,