1 //===-- sbvalue-cast.cpp ----------------------------------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 #ifdef DO_VIRTUAL_INHERITANCE
9 #define VIRTUAL virtual
10 #else
11 #define VIRTUAL
12 #endif
13 
14 #include <stdio.h>
15 
16 class Base
17 {
18 public:
19     Base(int val) : m_base_val (val) {}
20     virtual ~Base() {}
21 
22     virtual void
23     forcast(int input) {
24         int future_val = m_base_val + input * 1;
25         printf("Forcasting %d\n", future_val);
26     }
27 
28 protected:
29     int m_base_val;
30 };
31 
32 class DerivedA : public VIRTUAL Base
33 {
34 public:
35     DerivedA(int val) : Base(val*2), m_a_val(val) {
36         printf("DerivedA::ctor()->\n");
37         printf("m_base_val=%d\n", m_base_val);
38         printf("m_a_val=%d\n", m_a_val);
39     }
40     virtual ~DerivedA() {}
41 
42 private:
43     int m_a_val;
44 };
45 
46 class DerivedB : public VIRTUAL Base
47 {
48 public:
49     DerivedB(int val) : Base(val), m_b_val(val*3) {
50         printf("DerivedB::ctor()->\n");
51         printf("m_base_val=%d\n", m_base_val);
52         printf("m_b_val=%d\n", m_b_val);
53     }
54     virtual ~DerivedB() {}
55 
56     virtual void
57     forcast(int input) {
58         int future_val = m_b_val + input * 2;
59         printf("Forcasting %d\n", future_val);
60     }
61 
62 private:
63     int m_b_val;
64 };
65 
66 int
67 main(int argc, char **argv)
68 {
69 	DerivedA* dA = new DerivedA(10);
70 	DerivedB* dB = new DerivedB(12);
71 	Base *array[2] = {dA, dB};
72     Base *teller = NULL;
73     for (int i = 0; i < 2; ++i) {
74         teller = array[i];
75         teller->forcast(i); // Set breakpoint here.
76     }
77 
78     return 0;
79 }
80