Index: modules/rostests/rosautotest/CWineTest.cpp
===================================================================
--- modules/rostests/rosautotest/CWineTest.cpp	(revision 66851)
+++ modules/rostests/rosautotest/CWineTest.cpp	(working copy)
@@ -276,7 +276,6 @@
     stringstream ss, ssFinish;
     DWORD StartTime;
     float TotalTime;
-    string tailString;
     CPipe Pipe;
     char Buffer[1024];
 
@@ -295,7 +294,7 @@
         {
             /* Output text through StringOut, even while the test is still running */
             Buffer[BytesAvailable] = 0;
-            tailString = StringOut(tailString.append(string(Buffer)), false);
+            StringOut(string(Buffer));
 
             if(Configuration.DoSubmit())
                 TestInfo->Log += Buffer;
@@ -305,17 +304,10 @@
     }
     catch(CTestException& e)
     {
-        if(!tailString.empty())
-            StringOut(tailString);
-        tailString.clear();
         StringOut(e.GetMessage());
         TestInfo->Log += e.GetMessage();
     }
 
-    /* Print what's left */
-    if(!tailString.empty())
-        StringOut(tailString);
-
     TotalTime = ((float)GetTickCount() - StartTime)/1000;
     ssFinish << "Test " << TestInfo->Test << " completed in ";
     ssFinish << setprecision(2) << fixed << TotalTime << " seconds." << endl;
Index: modules/rostests/rosautotest/precomp.h
===================================================================
--- modules/rostests/rosautotest/precomp.h	(revision 66851)
+++ modules/rostests/rosautotest/precomp.h	(working copy)
@@ -69,7 +69,7 @@
 string EscapeString(const string& Input);
 string GetINIValue(PCWCH AppName, PCWCH KeyName, PCWCH FileName);
 bool IsNumber(const char* Input);
-string StringOut(const string& String, bool forcePrint = true);
+void StringOut(const string& InputString);
 string UnicodeToAscii(PCWSTR UnicodeString);
 string UnicodeToAscii(const wstring& UnicodeString);
 
Index: modules/rostests/rosautotest/tools.cpp
===================================================================
--- modules/rostests/rosautotest/tools.cpp	(revision 66851)
+++ modules/rostests/rosautotest/tools.cpp	(working copy)
@@ -87,85 +87,42 @@
 
 /**
  * Outputs a string through the standard output and the debug output.
- * The string may have LF or CRLF line endings.
+ * The input string may have LF or CRLF line endings.
  *
- * @param String
+ * @param InputString
  * The std::string to output
  */
-string
-StringOut(const string& String, bool forcePrint)
+void
+StringOut(const string& InputString)
 {
-    char DbgString[DBGPRINT_BUFSIZE + 1];
-    size_t i, start = 0, last_newline = 0, size = 0, curr_pos = 0;
-    string NewString;
+    const char* pInput = InputString.c_str();
+    char* OutputString = new char[InputString.size() + 1];
+    char* pOutput = OutputString;
 
     /* Unify the line endings (the piped output of the tests may use CRLF) */
-    for(i = 0; i < String.size(); i++)
+    while (*pInput)
     {
-        /* If this is a CRLF line-ending, only copy a \n to the new string and skip the next character */
-        if(String[i] == '\r' && String[i + 1] == '\n')
+        if (*pInput == '\r' && *(pInput + 1) == '\n')
         {
-            NewString += '\n';
-            ++i;
+            *pOutput = '\n';
+            ++pInput;
         }
         else
         {
-            /* Otherwise copy the string */
-            NewString += String[i];
+            *pOutput = *pInput;
         }
 
-        curr_pos = NewString.size();
-
-        /* Try to print whole lines but obey the 512 bytes chunk size limit*/
-        if(NewString[curr_pos - 1] == '\n' || (curr_pos - start) == DBGPRINT_BUFSIZE)
-        {
-            if((curr_pos - start) >= DBGPRINT_BUFSIZE)
-            {
-                /* No newlines so far, or the string just fits */
-                if(last_newline <= start || ((curr_pos - start == DBGPRINT_BUFSIZE) && NewString[curr_pos - 1] == '\n'))
-                {
-                    size = curr_pos - start;
-                    memcpy(DbgString, NewString.c_str() + start, size);
-                    start = curr_pos;
-                }
-                else
-                {
-                    size = last_newline - start;
-                    memcpy(DbgString, NewString.c_str() + start, size);
-                    start = last_newline;
-                }
-
-                DbgString[size] = 0;
-                OutputDebugStringA(DbgString);
-            }
-
-            last_newline = curr_pos;
-        }
+        ++pInput;
+        ++pOutput;
     }
 
-    size = curr_pos - start;
+    *pOutput = 0;
+    OutputDebugStringA(OutputString);
 
-    /* Only print if forced to or if the rest is a whole line */
-    if(forcePrint == true || NewString[curr_pos - 1] == '\n')
-    {
-        /* Output the whole string */
-        if(Configuration.DoPrint())
-            cout << NewString;
+    if (Configuration.DoPrint())
+        cout << OutputString << flush;
 
-        memcpy(DbgString, NewString.c_str() + start, size);
-        DbgString[size] = 0;
-        OutputDebugStringA(DbgString);
-
-        NewString.clear();
-        return NewString;
-    }
-
-    /* Output full lines only */
-    if(Configuration.DoPrint())
-        cout << NewString.substr(0, start);
-
-    /* Return the remaining chunk */
-    return NewString.substr(start, size);
+    delete[] OutputString;
 }
 
 /**