# std::optional<T>::~optional

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< cpp‎ | utility‎ | 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> is also trivially-destructible.

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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