How do I mark a struct variable volatile? about cbindgen

[flaviojs]

Temporary workaround for C:

lib.rs

/// cbindgen:no-export
#[repr(transparent)]
#[derive(Debug, Copy, Clone)]
pub struct Volatile<T>(pub T);
impl<T> Volatile<T> {
    pub fn get(&self) -> T {
        unsafe { std::ptr::read_volatile(std::ptr::addr_of!(self.0)) }
    }
    pub fn set(&mut self, x: T) {
        unsafe { std::ptr::write_volatile(std::ptr::addr_of_mut!(self.0), x) }
    }
}

#[repr(C)]
pub struct S {
    pub vi: Volatile<std::ffi::c_int>,
    pub vpi: Volatile<*mut std::ffi::c_int>,
}

#[no_mangle]
pub extern "C" fn _export(_: S) {}

cbindgen.toml

after_includes = """
// volatile types (cbindgen does not emit the C volatile type qualifier)
typedef volatile int Volatile_c_int;
typedef int *volatile Volatile_____c_int;
"""