Function libR_sys::R_ExecWithCleanup

pub unsafe extern "C" fn R_ExecWithCleanup(
    fun: Option<unsafe extern "C" fn(arg1: *mut c_void) -> SEXP>, 
    data: *mut c_void, 
    cleanfun: Option<unsafe extern "C" fn(arg1: *mut c_void)>, 
    cleandata: *mut c_void
) -> SEXP