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| Code Block | ||
|---|---|---|
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class Handle {
public:
Handle();
~Handle() {} // correct.
// ...
private:
std::tr1::shared_ptr<Body>ptr<Body> impl_;
};
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Note that we used a shared_ptr to refer to the Body. Other common smart pointers, including std::auto_ptr, will still produce undefined behavior.
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| Code Block | ||
|---|---|---|
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class B {
// ...
};
B *getMeSomeSortOfB();
// ...
class D; // incomplete declaration
// ...
B *bp = getMeSomeSortOfB();
D *dp = (D *)bp; // old-stlye cast: legal, but inadvisable
dp = reinterpret_cast<Dcast<D *>>(bp); // new-style cast: legal, but inadvisable
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| Wiki Markup |
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\[[Dewhurst 03|AA. C++ References#Dewhurst 04]\] Gotcha 39: Casting Incomplete Types |
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EXP35-C. Ensure that the right hand operand of a shift operation is within range 03. Expressions (EXP) 04. Integers (INT)