1 files changed, 17 insertions, 0 deletions

diff --git a/contrib/llvm-project/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp b/contrib/llvm-project/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp
index 2d2b68ceaaa6..e470dfeab98c 100644
--- a/contrib/llvm-project/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp
+++ b/contrib/llvm-project/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp
@@ -17,6 +17,7 @@
 
 #include "PythonDataObjects.h"
 #include "PythonExceptionState.h"
+#include "PythonReadline.h"
 #include "ScriptInterpreterPythonImpl.h"
 
 #include "lldb/API/SBFrame.h"
@@ -207,6 +208,22 @@ public:
 
     InitializePythonHome();
 
+#ifdef LLDB_USE_LIBEDIT_READLINE_COMPAT_MODULE
+    // Python's readline is incompatible with libedit being linked into lldb.
+    // Provide a patched version local to the embedded interpreter.
+    bool ReadlinePatched = false;
+    for (auto *p = PyImport_Inittab; p->name != NULL; p++) {
+      if (strcmp(p->name, "readline") == 0) {
+        p->initfunc = initlldb_readline;
+        break;
+      }
+    }
+    if (!ReadlinePatched) {
+      PyImport_AppendInittab("readline", initlldb_readline);
+      ReadlinePatched = true;
+    }
+#endif
+
     // Register _lldb as a built-in module.
     PyImport_AppendInittab("_lldb", LLDBSwigPyInit);