`basic_result(const failure_type<T> &)`

Implicit error-from-failure-type-sugar copy constructor used to disambiguate the construction of the error type.
Note that if `T = void`

, `error_type`

will be default constructed. Calls `void on_result_copy_construction(T *, U &&) noexcept`

with `this`

and `const failure_type<T> &`

.

*Requires*: `predicate::enable_compatible_conversion<void, T, void>`

is true, or `T`

is `void`

.

*Complexity*: Same as for the `error_type`

constructor which accepts `T`

, or the `error_type`

default constructor if `T`

is `void`

. Constexpr, triviality and noexcept of underlying operations is propagated.