[Lldb-commits] [lldb] Convert the StackFrameList mutex to a shared mutex. (PR #117252)

[Pavel Labath via lldb-commits]

================
@@ -803,13 +819,12 @@ uint32_t 
StackFrameList::SetSelectedFrame(lldb_private::StackFrame *frame) {
       break;
     }
   }
-
   SetDefaultFileAndLineToSelectedFrame();
-  return *m_selected_frame_idx;
+  result = *m_selected_frame_idx;
----------------
labath wrote:

What's up with the result variable? C++ guarantees that the result will be 
computed before the destructors are run precisely so that code like `return 
protected_object->some_operation()` is safe.

https://github.com/llvm/llvm-project/pull/117252
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