diff --git a/lldb/source/API/SBDebugger.cpp b/lldb/source/API/SBDebugger.cpp
--- a/lldb/source/API/SBDebugger.cpp
+++ b/lldb/source/API/SBDebugger.cpp
@@ -467,10 +467,8 @@
 
     sb_interpreter.HandleCommand(command, result, false);
 
-    if (GetErrorFileHandle() != nullptr)
-      result.PutError(GetErrorFile());
-    if (GetOutputFileHandle() != nullptr)
-      result.PutOutput(GetOutputFile());
+    result.PutError(m_opaque_sp->GetErrorStream().GetFileSP());
+    result.PutOutput(m_opaque_sp->GetOutputStream().GetFileSP());
 
     if (!m_opaque_sp->GetAsyncExecution()) {
       SBProcess process(GetCommandInterpreter().GetProcess());
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
@@ -329,10 +329,9 @@
           prompt = GetPrompt();
 
         if (prompt && prompt[0]) {
-          FILE *out = GetOutputFILE();
-          if (out) {
-            ::fprintf(out, "%s", prompt);
-            ::fflush(out);
+          if (m_output_sp) {
+            m_output_sp->Printf("%s", prompt);
+            m_output_sp->Flush();
           }
         }
       }
@@ -491,10 +490,11 @@
       // Show line numbers if we are asked to
       std::string line;
       if (m_base_line_number > 0 && GetIsInteractive()) {
-        FILE *out = GetOutputFILE();
-        if (out)
-          ::fprintf(out, "%u%s", m_base_line_number + (uint32_t)lines.GetSize(),
-                    GetPrompt() == nullptr ? " " : "");
+        if (m_output_sp) {
+          m_output_sp->Printf("%u%s",
+                              m_base_line_number + (uint32_t)lines.GetSize(),
+                              GetPrompt() == nullptr ? " " : "");
+        }
       }
 
       m_curr_line_idx = lines.GetSize();
diff --git a/lldb/source/Expression/REPL.cpp b/lldb/source/Expression/REPL.cpp
--- a/lldb/source/Expression/REPL.cpp
+++ b/lldb/source/Expression/REPL.cpp
@@ -423,7 +423,7 @@
               .SetBaseLineNumber(m_code.GetSize() + 1);
         }
         if (extra_line) {
-          fprintf(output_sp->GetFile().GetStream(), "\n");
+          output_sp->Printf("\n");
         }
       }
     }