--- rxvt-unicode/src/rxvtutil.h	2014/11/10 12:14:48	1.61
+++ rxvt-unicode/src/rxvtutil.h	2019/06/25 03:35:01	1.64
@@ -1,10 +1,12 @@
 #ifndef RXVT_UTIL_H
 #define RXVT_UTIL_H
 
-#include <new>
 #include <stdlib.h>
 #include <string.h>
+
+#define ECB_NO_THREADS 1
 #include "ecb.h"
+
 #include "estl.h"
 
 #include "emman.h"
@@ -25,8 +27,6 @@
 template<typename T, typename U, typename V> static inline T    clamp    (T  v, U a, V b) { return v < (T)a ? a : v >(T)b ? b : v; }
 template<typename T, typename U, typename V> static inline void clamp_it (T &v, U a, V b) {    v = v < (T)a ? a : v >(T)b ? b : v; }
 
-template<typename T> static inline T squared_diff (T a, T b) { return (a - b) * (a - b); }
-
 // linear interpolation
 template<typename T, typename U, typename P>
 static inline T
@@ -63,10 +63,6 @@
   void operator delete (void *p, size_t s);
 };
 
-// alas new/delete cannot be specified as inline in C++11 (see 17.6.4.6)
-void *operator new (size_t s) throw (std::bad_alloc);
-void operator delete (void *p) throw ();
-
 struct stringvec : simplevec<char *>
 {
   ~stringvec ()