diff -r 8fc9f252b2ff src/share/vm/opto/escape.cpp
--- a/src/share/vm/opto/escape.cpp	Fri Apr 22 16:05:00 2016 +0200
+++ b/src/share/vm/opto/escape.cpp	Fri Apr 29 23:06:53 2016 +0300
@@ -1696,6 +1696,20 @@
         // Mark all objects.
         jobj->set_scalar_replaceable(false);
          ptn->set_scalar_replaceable(false);
+        if (PrintEscapeAnalysis) {
+          tty->print_cr("Oops, merging with another object at use:");
+          use->ideal_node()->dump();
+          tty->cr();
+          tty->print_cr("Trying to allocate: ");
+          jobj->ideal_node()->dump();
+          tty->cr();
+          tty->print_cr("Type...");
+          jobj->ideal_node()->as_Allocate()->in(AllocateNode::KlassNode)->dump();
+          tty->cr();
+          tty->print_cr("Alternative edge:");
+          ptn->dump();
+          tty->cr();
+        }
       }
     }
     if (!jobj->scalar_replaceable()) {