c_void stabilized since 1.30.0?

[tesuji]

I compile this snippet with Rust 1.1.0 : https://rust.godbolt.org/z/L3Ks20

pub type HANDLE = *mut ::std::ffi::c_void;

The snippet cannot be compiled. The compiler outputs:

<source>:1:24: 1:42 error: use of undeclared type name `std::ffi::c_void`
<source>:1 pub type HANDLE = *mut ::std::ffi::c_void;
                                      ^~~~~~~~~~~~~~~~~~

After searching a little bit, I know that #53910 moved std::os::raw::c_void to the as is.
But when reading std doc, people may assume that they could use this reexport
since Rust 1.1.0.

What could we do to improve this situation?

[tesuji]

Or we could state that people could use std::os::raw::c_void in older Rust versions.

[mati865]

Duplicate of #63694?

[tesuji]

Indeed. Let's close it then.