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Throwing an exception copy-initializes a temporary object, called the exception object. The temporary is an lvalue and is used to initialize the variable declared in the matching handler.
If the copy constructor for the exception object type throws during the copy initialization, std::terminate() is called, which can result in undefined behavior. For more information on implicitly calling std::terminate(), see ERR50-CPP. Do not call std::terminate(), std::abort(), or std::_Exit().
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| [ISO/IEC 14882-2014] | Subclause 15.1, "Throwing an Exception" |
| [Hinnant 2015] |
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