Enum `c_void`

enum c_void

Equivalent to C's void type when used as a [pointer].

In essence, *const c_void is equivalent to C's const void* and *mut c_void is equivalent to C's void*. That said, this is not the same as C's void return type, which is Rust's () type.

To model pointers to opaque types in FFI, until extern type is stabilized, it is recommended to use a newtype wrapper around an empty byte array. See the Nomicon for details.

One could use std::os::raw::c_void if they want to support old Rust compiler down to 1.1.0. After Rust 1.30.0, it was re-exported by this definition. For more information, please read RFC 2521.

Implementations

`impl Debug for c_void`

fn fmt(self: &Self, f: &mut fmt::Formatter<'_>) -> fmt::Result

`impl Freeze for c_void`

`impl RefUnwindSafe for c_void`

`impl Send for c_void`

`impl Sync for c_void`

`impl Unpin for c_void`

`impl UnwindSafe for c_void`

`impl<T> Any for c_void`

fn type_id(self: &Self) -> TypeId

`impl<T> Borrow for c_void`

fn borrow(self: &Self) -> &T

`impl<T> BorrowMut for c_void`

fn borrow_mut(self: &mut Self) -> &mut T

`impl<T> From for c_void`

fn from(t: T) -> T: Returns the argument unchanged.

`impl<T, U> Into for c_void`

fn into(self: Self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of [From]<T> for U chooses to do.

`impl<T, U> TryFrom for c_void`

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

`impl<T, U> TryInto for c_void`

fn try_into(self: Self) -> Result<U, <U as TryFrom<T>>::Error>