File: badcast.cc

package info (click to toggle)
c%2B%2B-annotations 7.2.0-1
  • links: PTS
  • area: main
  • in suites: lenny
  • size: 11,484 kB
  • ctags: 2,902
  • sloc: cpp: 15,844; makefile: 2,997; ansic: 165; perl: 90; sh: 29
file content (52 lines) | stat: -rw-r--r-- 923 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
    #include <iostream>

    class Base
    {
        public:
            virtual ~Base();
            virtual char const *toString();
    };
    inline Base::~Base()
    {}
    inline char const *Base::toString()
    {
        return "Base::toString() called";
    }

    class Derived1: public Base
    {};

    class Derived2: public Base
    {};

    void process(Base &b)
    {
        try
        {
            std::cout << dynamic_cast<Derived1 &>(b).toString() << std::endl;
        }
        catch (std::bad_cast)
        {}

        try
        {
            std::cout << dynamic_cast<Derived2 &>(b).toString() << std::endl;
        }
        catch (std::bad_cast)
        {
            std::cout << "Bad cast to Derived2\n";
        }
    }

    int main()
    {
        Derived1 d;

        process(d);
    }
    /*
        Generated output:

        Base::toString() called
        Bad cast to Derived2
    */