llvm-project

c1e7e450 - Thread Safety Analysis: Support passing scoped locks between functions with appropriate annotations (#110523)

Thread Safety Analysis: Support passing scoped locks between functions with appropriate annotations (#110523) This is helpful when multiple functions operate on the same capabilities, but we still want to use scoped lockable types for readability and exception safety. - Introduce support for thread safety annotations on function parameters marked with the 'scoped_lockable' attribute. - Add semantic checks for annotated function parameters, ensuring correct usage. - Enhance the analysis to recognize and handle parameters annotated for thread safety, extending the scope of analysis to track these across function boundries. - Verify that the underlying mutexes of function arguments match the expectations set by the annotations. Limitation: This does not work when the attribute arguments are class members, because attributes on function parameters are parsed differently from attributes on functions.