Propagating exceptions from destructors with std::exception_ptr

A few weeks ago, I wrote about what happens when a destructor actually throws and why it is a dangerous idea. One of the readers commented that he was once in a situation where he had to propagate an exception from a destructor. But as a…

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A few weeks ago, I wrote about what happens when a destructor actually throws and why it is a dangerous idea. One of the readers commented that he was once in a situation where he had to propagate an exception from a destructor. But as a destructor cannot safely throw and it also cannot return any value, he needed a better solution.

And that solution was std::exception_ptr .

Let’s look into what this type is and how it can be used.

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