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int &getCopyCounter() {
static int copyCounter = 0;
return copyCounter;
}
class CopyTrackedBaseClass {
public:
CopyTrackedBaseClass(int x) : x(x) {}
CopyTrackedBaseClass(const CopyTrackedBaseClass &other) : x(other.x) {
++getCopyCounter();
}
int operator [](int y) const {
return y + x;
}
private:
int x;
};
class CopyTrackedDerivedClass: public CopyTrackedBaseClass {
public:
CopyTrackedDerivedClass(int x) : CopyTrackedBaseClass(x) {}
};
class NonEmptyBase {
public:
int getY() const {
return y;
}
private:
int y = 11;
};
class CopyTrackedDerivedDerivedClass: public NonEmptyBase, public CopyTrackedDerivedClass {
public:
CopyTrackedDerivedDerivedClass(int x) : CopyTrackedDerivedClass(x) {}
};
class SubscriptReturnsRef {
public:
const int &operator [](int y) const {
return x[y];
}
int &operator [](int y) {
return x[y];
}
private:
int x[10] = {0};
};
class DerivedSubscriptReturnsRef: public SubscriptReturnsRef {
public:
inline DerivedSubscriptReturnsRef() : SubscriptReturnsRef() {}
};
class NonConstSubscriptReturnsRef {
public:
int &operator [](int y) {
return x[y];
}
private:
int x[10] = {0};
};
class DerivedNonConstSubscriptReturnsRef: public NonConstSubscriptReturnsRef {
public:
inline DerivedNonConstSubscriptReturnsRef() : NonConstSubscriptReturnsRef() {}
};
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