Alnida worked on the facebook/zstd repository, focusing on improving the robustness of memory allocation in C. During this period, Alnida addressed a critical bug by introducing a NULL pointer check after the custom allocator invocation in the ZSTD_customCalloc function. This change prevents potential NULL dereference and application crashes when the allocator fails, thereby strengthening error handling and enhancing the stability of the memory management path. Utilizing skills in C programming and software development, Alnida’s contribution improved the reliability of the codebase. The work demonstrated careful attention to defensive programming and a solid understanding of low-level memory management concerns.