1 files changed, 7 insertions, 5 deletions
diff --git a/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp b/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp
index 553ee7e..16c3226 100644
--- a/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp
+++ b/lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp
@@ -2037,19 +2037,19 @@ lldb::ValueObjectSP ScriptInterpreterPythonImpl::GetChildAtIndex(
   return ret_val;
 }
 
-int ScriptInterpreterPythonImpl::GetIndexOfChildWithName(
+llvm::Expected<int> ScriptInterpreterPythonImpl::GetIndexOfChildWithName(
     const StructuredData::ObjectSP &implementor_sp, const char *child_name) {
   if (!implementor_sp)
-    return UINT32_MAX;
+    return llvm::createStringError("Type has no child named '%s'", child_name);
 
   StructuredData::Generic *generic = implementor_sp->GetAsGeneric();
   if (!generic)
-    return UINT32_MAX;
+    return llvm::createStringError("Type has no child named '%s'", child_name);
   auto *implementor = static_cast<PyObject *>(generic->GetValue());
   if (!implementor)
-    return UINT32_MAX;
+    return llvm::createStringError("Type has no child named '%s'", child_name);
 
-  int ret_val = UINT32_MAX;
+  int ret_val = INT32_MAX;
 
   {
     Locker py_lock(this,
@@ -2058,6 +2058,8 @@ int ScriptInterpreterPythonImpl::GetIndexOfChildWithName(
                                                                  child_name);
   }
 
+  if (ret_val == INT32_MAX)
+    return llvm::createStringError("Type has no child named '%s'", child_name);
   return ret_val;
 }