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std::mask_array<T>::mask_array

(1) 
private:
mask_array();
 (until C++11) 
public:
mask_array() = delete;
 (since C++11) 
public:
mask_array( const mask_array& other );
 (2)
1) The default constructor is declared private and not defined(until C++11)explicitly defined as deleted(since C++11): mask_array is not DefaultConstructible.
2) Constructs a mask_array from another mask_array other.

Parameters

other - mask_array to initialize with

Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR Applied to Behavior as published Correct behavior
LWG 253 C++98 the copy constructor was private made public

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