{"ast_node_type":"function","tokens":[{"end":92,"kind":"keyword","start":0,"text":"pub"}]}
        pub fn sigaction(signum: i32, act: *const sigaction, oldact: *mut sigaction) -> i32;
    extern "C" {
        pub fn mmap(addr: *mut (), len: usize, prot: i32, flags: i32, fd: i32, offset: i64) -> *mut ();