Consider the following code:
#include <iostream>
class MyClass
{
const int value;
public:
explicit MyClass() :
value(10)
{
}
MyClass(int val) :
value(val)
{
}
int GetValue()
{
return value;
}
};
int main()
{
MyClass a, b(20);
std::cout << "a.value = " << a.GetValue() << " b.value = " << b.GetValue() << std::endl;
b = a;
std::cout << "a.value = " << a.GetValue() << " b.value = " << b.GetValue() << std::endl;
return 0;
}
When built with Composer 2013 SP1 Update 4 on Windows, I get:
a.value = 10 b.value = 20
a.value = 10 b.value = 10
Two questions:
1. Why does this compile? Neither g++ nor MSVC will compile it because of the const member, which cannot be overwritten in the default assignment operator.
2. Why does assignment modify the const value?
