During February 2026, Qin Wang enhanced memory allocation safety in the facebook/folly repository by updating the SimpleAllocator component. Qin implemented logic in C++ to enforce a minimum allocation size, rounding up any allocation smaller than sizeof(void*), thereby addressing potential memory alignment and safety issues. Comprehensive unit tests were developed to validate correct behavior for 1-byte, 4-byte, and 8-byte allocations, ensuring the allocator’s reliability for small memory requests. Qin also updated in-code documentation in CacheLocality.h to clarify the new rounding policy, demonstrating attention to maintainability and clear developer guidance. The work reflected strong skills in C++ and memory management.