{"ast_node_type":"other","tokens":[{"end":16,"kind":"keyword","start":0,"text":"#[cfg(unix)]"}]}
    #[cfg(unix)]
    fn calloc(nobj: size_t, size: size_t) -> *mut c_void;
    fn posix_memalign(memptr: *mut *mut c_void, align: size_t, size: size_t) -> c_int;