1 files changed, 19 insertions, 8 deletions

diff --git a/lldb/source/Core/Debugger.cpp b/lldb/source/Core/Debugger.cpp
index 9c56905a2ba..7f180c1575a 100644
--- a/lldb/source/Core/Debugger.cpp
+++ b/lldb/source/Core/Debugger.cpp
@@ -767,8 +767,8 @@ Debugger::Debugger(lldb::LogOutputCallback log_callback, void *baton)
       m_source_manager_up(), m_source_file_cache(),
       m_command_interpreter_up(
           llvm::make_unique<CommandInterpreter>(*this, false)),
-      m_input_reader_stack(), m_instance_name(), m_loaded_plugins(),
-      m_event_handler_thread(), m_io_handler_thread(),
+      m_script_interpreter_sp(), m_input_reader_stack(), m_instance_name(),
+      m_loaded_plugins(), m_event_handler_thread(), m_io_handler_thread(),
       m_sync_broadcaster(nullptr, "lldb.debugger.sync"),
       m_forward_listener_sp(), m_clear_once() {
   char instance_cstr[256];
@@ -905,12 +905,10 @@ void Debugger::SetOutputFileHandle(FILE *fh, bool tranfer_ownership) {
   if (!out_file.IsValid())
     out_file.SetStream(stdout, false);
 
-  // do not create the ScriptInterpreter just for setting the output file
-  // handle as the constructor will know how to do the right thing on its own
-  const bool can_create = false;
-  ScriptInterpreter *script_interpreter =
-      GetCommandInterpreter().GetScriptInterpreter(can_create);
-  if (script_interpreter)
+  // Do not create the ScriptInterpreter just for setting the output file
+  // handle as the constructor will know how to do the right thing on its own.
+  if (ScriptInterpreter *script_interpreter =
+          GetScriptInterpreter(/*can_create=*/false))
     script_interpreter->ResetOutputFileHandle(fh);
 }
 
@@ -1288,6 +1286,19 @@ bool Debugger::EnableLog(llvm::StringRef channel,
                                error_stream);
 }
 
+ScriptInterpreter *Debugger::GetScriptInterpreter(bool can_create) {
+  std::lock_guard<std::recursive_mutex> locker(m_script_interpreter_mutex);
+
+  if (!m_script_interpreter_sp) {
+    if (!can_create)
+      return nullptr;
+    m_script_interpreter_sp = PluginManager::GetScriptInterpreterForLanguage(
+        GetScriptLanguage(), *this);
+  }
+
+  return m_script_interpreter_sp.get();
+}
+
 SourceManager &Debugger::GetSourceManager() {
   if (!m_source_manager_up)
     m_source_manager_up = llvm::make_unique<SourceManager>(shared_from_this());