Index: include/log4cxx/stream.h
===================================================================
--- include/log4cxx/stream.h	(revision 397269)
+++ include/log4cxx/stream.h	(working copy)
@@ -151,7 +151,13 @@
   ::log4cxx::logstream& lhs,
   const char* rhs);
 
+#if LOG4CXX_LOGCHAR_IS_WCHAR
 LOG4CXX_EXPORT ::log4cxx::logstream& operator<<(
+  ::log4cxx::logstream& lhs,
+  const std::string& rhs);
+#endif
+
+LOG4CXX_EXPORT ::log4cxx::logstream& operator<<(
    ::log4cxx::logstream& lhs,
    const ::log4cxx::LogString& rhs);
 
Index: src/logstream.cpp
===================================================================
--- src/logstream.cpp	(revision 397269)
+++ src/logstream.cpp	(working copy)
@@ -37,6 +37,17 @@
 }
 #endif
 
+#if LOG4CXX_LOGCHAR_IS_WCHAR
+log4cxx::logstream& operator<<(
+  ::log4cxx::logstream& lhs,
+  const std::string& rhs) {
+  LOG4CXX_DECODE_CHAR(tmp, rhs);
+  LOG4CXX_ENCODE_WCHAR(msg, tmp);
+  lhs.getStream() << msg;
+  return lhs;
+}
+#endif
+
 #if LOG4CXX_HAS_WCHAR_T
 log4cxx::logstream& operator<<(
   ::log4cxx::logstream& lhs,