What exception classes are in the standard C++ library

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心在旅途
心在旅途 2020-12-12 10:06

What are the exception classes that are included in the standard C++ library, and what should they be used for? I know there are a few new C++11 exceptions, but I\'m not su

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  • 2020-12-12 10:52

    See this site

    enter image description here

    Exception               Description
    ===================================
    std::exception          An exception and parent class of all the standard C++ exceptions.
    std::bad_alloc          This can be thrown by new.
    std::bad_cast           This can be thrown by dynamic_cast.
    std::bad_exception      This is useful device to handle unexpected exceptions in a C++ program
    std::bad_typeid         This can be thrown by typeid.
    std::logic_error        An exception that theoretically can be detected by reading the code.
    std::domain_error       This is an exception thrown when a mathematically invalid domain is used
    std::invalid_argument   This is thrown due to invalid arguments.
    std::length_error       This is thrown when a too big std::string is created
    std::out_of_range       This can be thrown by the at method from for example a std::vector and std::bitset<>::operator[]().
    std::runtime_error      An exception that theoretically can not be detected by reading the code.
    std::overflow_error     This is thrown if a mathematical overflow occurs.
    std::range_error        This is occured when you try to store a value which is out of range.
    std::underflow_error    This is thrown if a mathematical underflow occurs.
    
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  • 2020-12-12 11:06
    std::exception <exception> interface (debatable if you should catch this)
        std::bad_alloc <new> failure to allocate storage
            std::bad_array_new_length <new> invalid array length
        std::bad_cast <typeinfo> execution of an invalid dynamic-cast
        std::bad_exception <exception> signifies an incorrect exception was thrown
        std::bad_function_call <functional> thrown by "null" std::function
        std::bad_typeid <typeinfo> using typeinfo on a null pointer
        std::bad_weak_ptr <memory> constructing a shared_ptr from a bad weak_ptr
        std::logic_error <stdexcept> errors detectable before the program executes
            std::domain_error <stdexcept> parameter outside the valid range
            std::future_error <future> violated a std::promise/std::future condition
            std::invalid_argument <stdexcept> invalid argument
            std::length_error <stdexcept> length exceeds its maximum allowable size
            std::out_of_range <stdexcept> argument value not in its expected range
        std::runtime_error <stdexcept> errors detectable when the program executes
            std::overflow_error <stdexcept> arithmetic overflow error.
            std::underflow_error <stdexcept> arithmetic underflow error.
            std::range_error <stdexcept> range errors in internal computations
            std::regex_error <regex> errors from the regular expression library.
            std::system_error <system_error> from operating system or other C API
                std::ios_base::failure <ios> Input or output error
    

    Source: http://en.cppreference.com/w/cpp/error/exception
    In practice, most exceptions are custom exceptions derived from logic_error and runtime_error. Not that these are neglected, but that many exceptions are domain specific.

    Keep in mind that an exception should reflect what went wrong and not who threw it. (No "MyProgramException"s)

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