diff -r e56c951d8735 -r 96e348cb0442 hotspot/src/share/vm/utilities/ostream.cpp
--- a/hotspot/src/share/vm/utilities/ostream.cpp	Wed Sep 23 22:04:23 2015 +0300
+++ b/hotspot/src/share/vm/utilities/ostream.cpp	Thu Sep 24 12:36:04 2015 +0200
@@ -1440,3 +1440,14 @@
 }
 
 #endif
+
+void logStream::write(const char* s, size_t len) {
+  if (len > 0 && s[len - 1] == '\n') {
+    _current_line.write(s, len - 1);
+    _log_func(_current_line.as_string());
+    _current_line.reset();
+  } else {
+    _current_line.write(s, len);
+    update_position(s, len);
+  }
+}