C++ Constructor initialization list strangeness
- by Andy
I have always been a good boy when writing my classes, prefixing all member variables with m_:
class Test {
int m_int1;
int m_int2;
public:
Test(int int1, int int2) : m_int1(int int1), m_int2(int int2) {}
};
void main() {
Test t(10, 20); // Just an example
}
However, recently I forgot to do that and ended up writing:
class Test {
int int1;
int int2;
public:
// Very questionable, but of course I meant to assign ::int1 to this->int1!
Test(int int1, int int2) : int1(int1), int2(int2) {}
};
Believe it or not, the code compiled with no errors/warnings and the assignments took place correctly! It was only when doing the final check before checking in my code when I realised what I had done.
My question is: why did my code compile? Is something like that allowed in the C++ standard, or is it simply a case of the compiler being clever? In case you were wondering, I was using Visual Studio 2008
Thank you.
