--- rxvt-unicode/src/rxvt.h	2012/05/17 10:48:56	1.477
+++ rxvt-unicode/src/rxvt.h	2012/05/17 22:00:57	1.478
@@ -833,6 +833,9 @@
 struct compose_char
 {
   unicode_t c1, c2; // any chars != NOCHAR are valid
+  #if __cplusplus >= 201103L
+  compose_char () = default;
+  #endif
   compose_char (unicode_t c1, unicode_t c2)
   : c1(c1), c2(c2)
   { }