std::optional<T>::~optional

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std::optional
~optional();
 (since C++17)
(constexpr since C++20)

If the object contains a value and the type T is not trivially destructible (see std::is_trivially_destructible), destroys the contained value by calling its destructor, as if by value().T::~T()

Otherwise, does nothing.

Notes

If T is trivially-destructible, then this destructor is also trivial, so std::optional<T>

Feature-test macro Value Std Feature
__cpp_lib_optional 202106L (C++20)
(DR20)		 Fully constexpr

Defect reports

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

DR Applied to Behavior as published Correct behavior
P2231R1 C++20 the destructor was not constexpr while non-trivial destructors can be constexpr in C++20 made constexpr
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