Audio clip name longer than 4 characters interrupts client

Question

Trying to use JACK-AUDIO-CONNECTION-KIT from Rust ( documentation ), I ran into problems when calling

jack_client_t* jack_client_open (   const char *    client_name,
                                    jack_options_t  options,
                                    jack_status_t *     status,
                                    ... )   

In Rust, I use

#[link(name = "jack")]
extern "C" {
    pub fn jack_client_open(name: *const libc::c_char,
                        options: JackOptions,
                        status: &JackStatus)
                        -> *mut JackClientT;
}

( full code )

When I use namewith four characters, it works, for example

let name = CString::new("yass").unwrap().as_ptr();

but if I use 5 or more characters, this will not work. The JACK docs associated with the above say that a name can be no more than int jack_client_name_size()characters long, which in my case is 64. Why is this happening?

Answer 1

let name = CString::new("yass").unwrap().as_ptr(); , ... , . . let name = CString::new("yass").unwrap();, name.as_ptr(). . CStr::as_ptr RFC.

.