The recent developments in the research area of WebAssembly (Wasm) and database systems highlight a significant focus on enhancing performance, reliability, and code optimization. In the realm of Wasm, innovative approaches are being developed to improve runtime performance testing and ensure the fidelity of cross-compiled code. Techniques such as distinguishability-guided test program generation and differential testing frameworks are proving effective in identifying performance issues and semantic discrepancies in Wasm runtimes and compilers. On the database front, the emphasis is on ensuring data integrity and uncovering bugs in emerging database systems through enhanced differential testing methods. These advancements not only address current challenges but also pave the way for more robust and efficient systems.

Noteworthy papers include:

• A novel test program generation approach for Wasm runtime performance testing, which has successfully identified new performance issues.
• A study on the challenges of cross-compiling legacy code into Wasm, introducing a framework that has uncovered bugs in the Emscripten compiler toolchain.
• An adaptation of differential testing combined with large language models to find missed code size optimizations in compilers, demonstrating simplicity and extensibility across different programming languages.
• Enhanced differential testing for emerging database systems, implemented in a tool that has detected numerous unknown bugs, showcasing its practicality and effectiveness.