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allow OwningPtr to be copy constructed if null, which is required to
make them be a valuetype in a DenseMap. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148688 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -25,12 +25,15 @@ namespace llvm {
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/// pointee object can be taken away from OwningPtr by using the take method.
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template<class T>
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class OwningPtr {
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OwningPtr(OwningPtr const &); // DO NOT IMPLEMENT
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OwningPtr &operator=(OwningPtr const &); // DO NOT IMPLEMENT
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OwningPtr &operator=(const OwningPtr &); // DO NOT IMPLEMENT
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T *Ptr;
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public:
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explicit OwningPtr(T *P = 0) : Ptr(P) {}
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OwningPtr(const OwningPtr &RHS) : Ptr(0) {
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assert(RHS.Ptr == 0 && "Only null OwningPtr's are copyable!");
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}
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~OwningPtr() {
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delete Ptr;
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}
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