--- old/src/share/vm/logging/logStream.hpp	2017-06-21 17:46:05.206783000 +0200
+++ new/src/share/vm/logging/logStream.hpp	2017-06-21 17:46:04.525735300 +0200
@@ -32,6 +32,7 @@
 
 
 class LogStream : public outputStream {
+  friend class LogStreamTest_TestLineBufferAllocation_test_vm_Test; // see test/native/logging/test_logStream.cpp
 
   // Helper class, maintains the line buffer. For small line lengths,
   // we avoid malloc and use a fixed sized member char array. If LogStream
@@ -49,14 +50,14 @@
     const char* ptr() const { return _buf; }
     void append(const char* s, size_t len);
     void reset();
-  }; 
+  };
   LineBuffer  _current_line;
   LogTargetHandle _log_handle;
 
   // Prevent operator new for LogStream.
   static void* operator new (size_t);
   static void* operator new[] (size_t);
-  
+
 public:
   // Constructor to support creation from a LogTarget instance.
   //