Coding With Joseph

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C++ Quiz #30

Default Copy Double Free

easyRule of Three

This code compiles but crashes at runtime. What is the issue?

📄 Code

1#include <iostream>
2using namespace std;
3 
4class IntHolder {
5public:
6    int* value;
7    IntHolder(int v) {
8        value = new int(v);
9    }
10    ~IntHolder() {
11        delete value;
12    }
13};
14 
15int main() {
16    IntHolder a(10);
17    IntHolder b = a;  // copy
18    return 0;
19}