Worked on the wasmtime repository to address a critical memory safety issue in the StringPool cloning logic, focusing on stability and correctness for system-level Rust applications. Delivered a targeted bug fix that ensures cloned map keys reference their own string storage, preventing dangling references and runtime instantiation failures when the original Linker is dropped. The solution involved careful adjustments to StringPool::try_clone(), validated through continuous integration and Miri testing to maintain compatibility with the 43.0 release. Demonstrated expertise in Rust, system programming, and testing by resolving a long-standing soundness bug, thereby improving reliability for downstream users and deployments.