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Fixing move constructor of Final_act to take non-const r-value reference and move properly from other Final_act object so that correctness is not dependent on copy elison.

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john-lynch 2015-09-28 23:40:25 -05:00
parent 065f4880c3
commit 422e7164d5
1 changed files with 6 additions and 5 deletions
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11
include/gsl.h
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@ -50,16 +50,17 @@ template <class F>
class Final_act
{
public:
explicit Final_act(F f) : f_(std::move(f)) {}
Final_act(const Final_act&& other) : f_(other.f_) {}
explicit Final_act(F f) : f_(std::move(f)), invoke_(true) {}
Final_act(Final_act&& other) : f_(std::move(other.f_)), invoke_(true) { other._invoke = false; }
Final_act(const Final_act&) = delete;
Final_act& operator=(const Final_act&) = delete;
~Final_act() { f_(); }
~Final_act() { if (invoke_) f_(); }
private:
F f_;
bool invoke_;
};
// finally() - convenience function to generate a Final_act