Worked on the tree-sitter/tree-sitter repository to enhance the safety of WebAssembly language parsing by implementing robust memory read validation. Addressed a critical bug by introducing new C structures and functions that manage and verify memory reads, ensuring all accesses during language loading are bounds-checked and safe. This technical approach focused on hardening the Wasm memory model integration, reducing the risk of crashes from unsafe memory operations. Leveraged expertise in C programming, WebAssembly, and memory management to improve the reliability of the parser, directly benefiting multi-language projects that depend on tree-sitter for secure and stable language module loading.