tr1/std  difference, see header

Index: src/utils/instrumentation.h
--- src/utils/instrumentation.h.orig
+++ src/utils/instrumentation.h
@@ -118,7 +118,7 @@ void instrumentation_reset();
 
 inline void
 instrumentation_initialize() {
-  instrumentation_values.assign(int64_t());
+  fill_with_value(instrumentation_values, int64_t());
 }
 
 inline void