标准C++库中有哪些异常类

问题描述 投票:0回答:2

标准 C++ 库中包含哪些异常类,它们的用途是什么?我知道有一些新的 C++11 异常,但我不确定它们是什么或它们在哪里。

c++ exception c++11 stl
2个回答
167
投票
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

来源:http://en.cppreference.com/w/cpp/error/exception
实际上,大多数异常都是源自

logic_error
runtime_error
的自定义异常。并不是说这些被忽略了,而是许多例外是特定于领域的。

请记住,异常应该反映出了什么问题,而不是是谁抛出了它。 (没有“MyProgramException”)


54
投票
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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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