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Type Alias std::os::raw::c_void
pub type c_void = 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.
Aliased Type
enum c_void {
// some variants omitted
}
Variants
© 2010 The Rust Project Developers
Licensed under the Apache License, Version 2.0 or the MIT license, at your option.
https://doc.rust-lang.org/std/os/raw/type.c_void.html