Update LLDB snapshot to upstream r241361

Notable upstream commits (upstream revision in parens):

- Add a JSON producer to LLDB (228636)
- Don't crash on bad DWARF expression (228729)
- Add support of DWARFv3 DW_OP_form_tls_address (231342)
- Assembly profiler for MIPS64 (232619)
- Handle FreeBSD/arm64 core files (233273)
- Read/Write register for MIPS64 (233685)
- Rework LLDB system initialization (233758)
- SysV ABI for aarch64 (236098)
- MIPS software single stepping (236696)
- FreeBSD/arm live debugging support (237303)
- Assembly profiler for mips32 (237420)
- Parse function name from DWARF DW_AT_abstract_origin (238307)
- Improve LLDB prompt handling (238313)
- Add real time signals support to FreeBSDSignals (238316)
- Fix race in IOHandlerProcessSTDIO (238423)
- MIPS64 Branch instruction emulation for SW single stepping (238820)
- Improve OSType initialization in elf object file's arch_spec (239148)
- Emulation of MIPS64 floating-point branch instructions (239996)
- ABI Plugin for MIPS32 (239997)
- ABI Plugin for MIPS64 (240123)
- MIPS32 branch emulation and single stepping (240373)
- Improve instruction emulation based stack unwinding on ARM (240533)
- Add branch emulation to aarch64 instruction emulator (240769)

1 files changed, 16 insertions, 6 deletions

diff --git a/contrib/llvm/tools/lldb/source/Commands/CommandObjectGUI.cpp b/contrib/llvm/tools/lldb/source/Commands/CommandObjectGUI.cpp
index 3d05335..0991c7e 100644
--- a/contrib/llvm/tools/lldb/source/Commands/CommandObjectGUI.cpp
+++ b/contrib/llvm/tools/lldb/source/Commands/CommandObjectGUI.cpp
@@ -7,8 +7,6 @@
 //
 //===----------------------------------------------------------------------===//
 
-#include "lldb/lldb-python.h"
-
 #include "CommandObjectGUI.h"
 
 // C Includes
@@ -42,10 +40,22 @@ CommandObjectGUI::DoExecute (Args& args, CommandReturnObject &result)
     if (args.GetArgumentCount() == 0)
     {
         Debugger &debugger = m_interpreter.GetDebugger();
-        IOHandlerSP io_handler_sp (new IOHandlerCursesGUI (debugger));
-        if (io_handler_sp)
-            debugger.PushIOHandler(io_handler_sp);
-        result.SetStatus (eReturnStatusSuccessFinishResult);
+
+        lldb::StreamFileSP input_sp = debugger.GetInputFile();
+        if (input_sp &&
+            input_sp->GetFile().GetIsRealTerminal() &&
+            input_sp->GetFile().GetIsInteractive())
+        {
+            IOHandlerSP io_handler_sp (new IOHandlerCursesGUI (debugger));
+            if (io_handler_sp)
+                debugger.PushIOHandler(io_handler_sp);
+            result.SetStatus (eReturnStatusSuccessFinishResult);
+        }
+        else
+        {
+            result.AppendError("the gui command requires an interactive terminal.");
+            result.SetStatus (eReturnStatusFailed);
+        }
     }
     else
     {