diff --git a/lldb/source/Commands/CommandObjectGUI.cpp b/lldb/source/Commands/CommandObjectGUI.cpp
--- a/lldb/source/Commands/CommandObjectGUI.cpp
+++ b/lldb/source/Commands/CommandObjectGUI.cpp
@@ -29,7 +29,9 @@
     Debugger &debugger = GetDebugger();
 
     File &input = debugger.GetInputFile();
-    if (input.GetIsRealTerminal() && input.GetIsInteractive()) {
+    File &output = debugger.GetOutputFile();
+    if (input.GetStream() && output.GetStream() && input.GetIsRealTerminal() &&
+        input.GetIsInteractive()) {
       IOHandlerSP io_handler_sp(new IOHandlerCursesGUI(debugger));
       if (io_handler_sp)
         debugger.PushIOHandler(io_handler_sp);
diff --git a/lldb/source/Core/IOHandler.cpp b/lldb/source/Core/IOHandler.cpp
--- a/lldb/source/Core/IOHandler.cpp
+++ b/lldb/source/Core/IOHandler.cpp
@@ -266,7 +266,8 @@
 #ifndef LLDB_DISABLE_LIBEDIT
   bool use_editline = false;
 
-  use_editline = m_input_sp && m_input_sp->GetIsRealTerminal();
+  use_editline = GetInputFILE() && GetOutputFILE() && GetErrorFILE() &&
+                 m_input_sp && m_input_sp->GetIsRealTerminal();
 
   if (use_editline) {
     m_editline_up.reset(new Editline(editline_name, GetInputFILE(),