How does C++11 improve exception handling performance?

How does C++11 improve exception handling performance?

C++11 introduced several features that enhance exception handling, such as the noexcept specifier, which allows the compiler to optimize code better by knowing which functions won't throw exceptions.

Can you explain the noexcept specifier in more detail?

Sure! The noexcept specifier indicates that a function is not expected to throw exceptions. This allows the compiler to generate more efficient code, as it can make certain optimizations knowing that no unwinding of the stack will be necessary.

What are the benefits of using noexcept?

Using noexcept can lead to performance improvements, as it reduces the overhead of exception handling. It also helps in writing safer code by clearly indicating which functions are not supposed to throw.

Are there any downsides to using noexcept?

Yes, if a noexcept function does throw an exception, it results in a call to std::terminate, which can lead to program termination. Therefore, it should be used carefully.