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If you’ve worked on any non-trivial C++ project, you’ve likely encountered process coredumps. A coredump is a mechanism where the operating system records the current memory state of a program when it encounters a severe error during execution.

There are many reasons why a C++ process might coredump, including:

Illegal Memory Access: This includes dereferencing null pointers, accessing freed memory, array bounds violations, etc. Stack Overflow: Caused by infinite recursion or large arrays allocated on the stack Segmentation Fault: Attempting to write to read-only memory or accessing unmapped memory regions Uncaught Exceptions: Program termination due to unhandled exceptions When encountering a coredump, we typically need to examine the core file for problem analysis and debugging. Analyzing core files can be challenging as it requires a deep understanding of C++’s memory model, exception handling mechanisms, and system calls.

Rather than focusing on core file analysis methods, this article will present several real-world cases to help developers proactively avoid these errors in their code.