--- old/src/share/vm/gc/parallel/adjoiningGenerations.cpp	2017-06-30 19:59:36.162274800 +0200
+++ new/src/share/vm/gc/parallel/adjoiningGenerations.cpp	2017-06-30 19:59:35.522448400 +0200
@@ -28,6 +28,7 @@
 #include "gc/parallel/generationSizer.hpp"
 #include "gc/parallel/parallelScavengeHeap.hpp"
 #include "logging/log.hpp"
+#include "logging/logStream.hpp"
 #include "memory/resourceArea.hpp"
 #include "utilities/ostream.hpp"
 
@@ -128,7 +129,8 @@
   log.debug("  Requested change: " SIZE_FORMAT_HEX "  Attempted change: " SIZE_FORMAT_HEX,
                         expand_in_bytes, change_in_bytes);
   ResourceMark rm;
-  ParallelScavengeHeap::heap()->print_on(log.debug_stream());
+  LogStream ls(log.debug());
+  ParallelScavengeHeap::heap()->print_on(&ls);
   log.debug("  PS%sGen max size: " SIZE_FORMAT "K", old ? "Old" : "Young", max_size/K);
 }
 
@@ -139,7 +141,8 @@
   }
   log.debug("After expansion of %s gen with boundary move", old ? "old" : "young");
   ResourceMark rm;
-  ParallelScavengeHeap::heap()->print_on(log.debug_stream());
+  LogStream ls(log.debug());
+  ParallelScavengeHeap::heap()->print_on(&ls);
   log.debug("  PS%sGen max size: " SIZE_FORMAT "K", old ? "Old" : "Young", max_size/K);
 }