Issue #13415: Help to locate curses.h when _curses module is linked to ncursesw
diff --git a/Lib/test/test_curses.py b/Lib/test/test_curses.py
index b416403..ce09855 100644
--- a/Lib/test/test_curses.py
+++ b/Lib/test/test_curses.py
@@ -268,7 +268,10 @@
     if not hasattr(curses, 'unget_wch'):
         return
     for ch in ('a', '\xe9', '\u20ac', '\U0010FFFF'):
-        curses.unget_wch(ch)
+        try:
+            curses.unget_wch(ch)
+        except Exception as err:
+            raise Exception("unget_wch(%a) failed: %s" % (ch, err))
         read = stdscr.get_wch()
         read = chr(read)
         if read != ch: