C++ service crashed. The service depends on a static library for compilation. The static library made modifications, adding members to the header file and re-publishing the binary static library file. The service relies on the new binary library file, compiles and runs normally, but then crashes. The crash point appears fine, similar to the crashes caused by compiler upgrades – undefined behavior, an untrustworthy stack trace. Updating the service’s dependent header files allows it to mutate correctly, and running also works normally. A detailed explanation is needed, involving computer science knowledge, I suspect it’s related to memory layout, with examples for a thorough explanation.