Both std::terminate() and std::abort() are used to abnormally terminate a C++ program, but they have some differences:
std::terminate():
- Invoked when an exception is not caught and propagates out of
main(), or when an exception is thrown from a destructor during stack unwinding. - Can be customized by setting a terminate handler using
std::set_terminate(). - The default terminate handler calls
std::abort().
std::abort():
- Immediately terminates the program without invoking any cleanup or destructors.
- Sends an abnormal termination signal (SIGABRT) to the host environment.
- Cannot be customized.
In summary, std::terminate() provides a customization point before terminating the program, while std::abort() immediately terminates without any opportunity for cleanup or customization.
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This Question is from the Lesson:
std::terminate and the noexcept specifier
This lesson explores the std::terminate function and noexcept specifier, with particular focus on their interactions with move semantics.
