[Lldb-commits] [lldb] [lldb] Fix deadlock when a REPL expression hits a breakpoint (PR #227400)

[Jonas Devlieghere via lldb-commits]

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@@ -451,6 +446,17 @@ void REPL::IOHandlerInputComplete(IOHandler &io_handler, std::string &code) {
           }
         }
 
+        // RunIOHandlerAsync takes the IOHandler stack mutex, and
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JDevlieghere wrote:

The fix moves one RunIOHandlerAsync call out of the locked region, but the underlying inversion is still there: IOHandlerStack::PrintAsync takes the stack mutex and then the shared m_output_mutex, while other code takes them in the opposite order.

https://github.com/llvm/llvm-project/pull/227400