Bug #1678647: write a newline after printing an exception in any

case, even when converting the value to a string failed.

Misc/NEWS

@@ -12,6 +12,9 @@ What's New in Python 2.6 alpha 1?
 Core and builtins
 -----------------
 
+- Bug #1678647: write a newline after printing an exception in any
+  case, even when converting the value to a string failed.
+
 - The dir() function has been extended to call the __dir__() method on
   its argument, if it exists. If not, it will work like before. This allows
   customizing the output of dir() in the presence of a __getattr__().

Python/pythonrun.c

@@ -1226,8 +1226,8 @@ PyErr_Display(PyObject *exception, PyObject *value, PyObject *tb)
 			  err = PyFile_WriteObject(s, f, Py_PRINT_RAW);
 			Py_XDECREF(s);
 		}
-		if (err == 0)
-			err = PyFile_WriteString("\n", f);
+		/* try to write a newline in any case */
+		err += PyFile_WriteString("\n", f);
 	}
 	Py_DECREF(value);
 	/* If an error happened here, don't show it.