diff --git a/lldb/bindings/python/python-typemaps.swig b/lldb/bindings/python/python-typemaps.swig
--- a/lldb/bindings/python/python-typemaps.swig
+++ b/lldb/bindings/python/python-typemaps.swig
@@ -18,7 +18,7 @@
       if (!py_str.IsAllocated()) {
         PyErr_SetString(PyExc_TypeError, "list must contain strings");
         free($1);
-        return nullptr;
+        SWIG_fail;
       }
 
       $1[i] = const_cast<char *>(py_str.GetString().data());
@@ -28,7 +28,7 @@
     $1 = NULL;
   } else {
     PyErr_SetString(PyExc_TypeError, "not a list");
-    return NULL;
+    SWIG_fail;
   }
 }
 
@@ -70,7 +70,7 @@
   PythonObject obj = Retain<PythonObject>($input);
   lldb::tid_t value = unwrapOrSetPythonException(As<unsigned long long>(obj));
   if (PyErr_Occurred())
-    return nullptr;
+    SWIG_fail;
   $1 = value;
 }
 
@@ -79,10 +79,10 @@
   unsigned long long state_type_value =
       unwrapOrSetPythonException(As<unsigned long long>(obj));
   if (PyErr_Occurred())
-    return nullptr;
+    SWIG_fail;
   if (state_type_value > lldb::StateType::kLastStateType) {
     PyErr_SetString(PyExc_ValueError, "Not a valid StateType value");
-    return nullptr;
+    SWIG_fail;
   }
   $1 = static_cast<lldb::StateType>(state_type_value);
 }
@@ -93,12 +93,12 @@
 %typemap(in) (char *dst, size_t dst_len) {
   if (!PyInt_Check($input)) {
     PyErr_SetString(PyExc_ValueError, "Expecting an integer");
-    return NULL;
+    SWIG_fail;
   }
   $2 = PyInt_AsLong($input);
   if ($2 <= 0) {
     PyErr_SetString(PyExc_ValueError, "Positive integer expected");
-    return NULL;
+    SWIG_fail;
   }
   $1 = (char *)malloc($2);
 }
@@ -129,12 +129,12 @@
 %typemap(in) (char *dst_or_null, size_t dst_len) {
   if (!PyInt_Check($input)) {
     PyErr_SetString(PyExc_ValueError, "Expecting an integer");
-    return NULL;
+    SWIG_fail;
   }
   $2 = PyInt_AsLong($input);
   if ($2 <= 0) {
     PyErr_SetString(PyExc_ValueError, "Positive integer expected");
-    return NULL;
+    SWIG_fail;
   }
   $1 = (char *)malloc($2);
 }
@@ -166,7 +166,7 @@
     $2 = bytes.GetSize();
   } else {
     PyErr_SetString(PyExc_ValueError, "Expecting a string");
-    return NULL;
+    SWIG_fail;
   }
 }
 // For SBProcess::WriteMemory, SBTarget::GetInstructions and SBDebugger::DispatchInput.
@@ -186,7 +186,7 @@
     $2 = bytes.GetSize();
   } else {
     PyErr_SetString(PyExc_ValueError, "Expecting a buffer");
-    return NULL;
+    SWIG_fail;
   }
 }
 
@@ -199,11 +199,11 @@
     $2 = PyLong_AsLong($input);
   } else {
     PyErr_SetString(PyExc_ValueError, "Expecting an integer or long object");
-    return NULL;
+    SWIG_fail;
   }
   if ($2 <= 0) {
     PyErr_SetString(PyExc_ValueError, "Positive integer expected");
-    return NULL;
+    SWIG_fail;
   }
   $1 = (void *)malloc($2);
 }
@@ -287,12 +287,12 @@
       if (!SetNumberFromPyObject($1[i], o)) {
         PyErr_SetString(PyExc_TypeError, "list must contain numbers");
         free($1);
-        return NULL;
+        SWIG_fail;
       }
 
       if (PyErr_Occurred()) {
         free($1);
-        return NULL;
+        SWIG_fail;
       }
     }
   } else if ($input == Py_None) {
@@ -300,7 +300,7 @@
     $2 = 0;
   } else {
     PyErr_SetString(PyExc_TypeError, "not a list");
-    return NULL;
+    SWIG_fail;
   }
 }
 
@@ -353,7 +353,7 @@
   if (!($input == Py_None ||
         PyCallable_Check(reinterpret_cast<PyObject *>($input)))) {
     PyErr_SetString(PyExc_TypeError, "Need a callable object or None!");
-    return NULL;
+    SWIG_fail;
   }
 
   // FIXME (filcab): We can't currently check if our callback is already
@@ -377,11 +377,11 @@
   PythonFile py_file(PyRefType::Borrowed, $input);
   if (!py_file) {
     PyErr_SetString(PyExc_TypeError, "not a file");
-    return nullptr;
+    SWIG_fail;
   }
   auto sp = unwrapOrSetPythonException(py_file.ConvertToFile());
   if (!sp)
-    return nullptr;
+    SWIG_fail;
   $1 = sp;
 }
 
@@ -389,12 +389,12 @@
   PythonFile py_file(PyRefType::Borrowed, $input);
   if (!py_file) {
     PyErr_SetString(PyExc_TypeError, "not a file");
-    return nullptr;
+    SWIG_fail;
   }
   auto sp = unwrapOrSetPythonException(
       py_file.ConvertToFileForcingUseOfScriptingIOMethods());
   if (!sp)
-    return nullptr;
+    SWIG_fail;
   $1 = sp;
 }
 
@@ -402,12 +402,12 @@
   PythonFile py_file(PyRefType::Borrowed, $input);
   if (!py_file) {
     PyErr_SetString(PyExc_TypeError, "not a file");
-    return nullptr;
+    SWIG_fail;
   }
   auto sp =
       unwrapOrSetPythonException(py_file.ConvertToFile(/*borrowed=*/true));
   if (!sp)
-    return nullptr;
+    SWIG_fail;
   $1 = sp;
 }
 
@@ -415,12 +415,12 @@
   PythonFile py_file(PyRefType::Borrowed, $input);
   if (!py_file) {
     PyErr_SetString(PyExc_TypeError, "not a file");
-    return nullptr;
+    SWIG_fail;
   }
   auto sp = unwrapOrSetPythonException(
       py_file.ConvertToFileForcingUseOfScriptingIOMethods(/*borrowed=*/true));
   if (!sp)
-    return nullptr;
+    SWIG_fail;
   $1 = sp;
 }
 
@@ -439,7 +439,7 @@
   if (sp) {
     PythonFile pyfile = unwrapOrSetPythonException(PythonFile::FromFile(*sp));
     if (!pyfile.IsValid())
-      return nullptr;
+      SWIG_fail;
     $result = pyfile.release();
   }
   if (!$result) {
@@ -468,7 +468,7 @@
     py_str.release();
   } else {
     PyErr_SetString(PyExc_TypeError, "not a string-like object");
-    return NULL;
+    SWIG_fail;
   }
 }