Throwing a wrench into it.

Understanding destructors and exception safety in C++

This is a foundational C++ language question that tests whether you understand the interaction between object lifecycle and exception handling. It's the kind of question interviewers ask to separate candidates who have read the standard from those who have only written code.

The question touches on a core constraint of C++ exception handling: what happens when cleanup code needs to run in the presence of errors. A solid answer requires you to reason about the consequences for stack unwinding, resource management, and program stability. This matters in any C++ codebase, but especially in systems where reliability is critical.

• Exception safety guarantees (strong, basic, nothrow)
• Stack unwinding and noexcept semantics
• Resource acquisition and cleanup patterns
• The relationship between destructors and RAII