Worked on stability hardening within the JetBrainsRuntime repository, focusing on the -Xshare:dump workflow to address a JVM crash scenario. Implemented a targeted fix in C++ by adding a null check for _resolved_indy_entries in ConstantPoolCache::resolved_indy_entries_length, preventing a potential SIGSEGV during class data sharing operations. This defensive coding approach improved memory safety and reduced production risk for users upgrading to version 21.0.5 and later. Demonstrated strong debugging skills and a deep understanding of JVM internals, ensuring more reliable runtime behavior and safer upgrade paths for downstream users relying on performance optimization and robust class sharing features.