Do not expose value on darwin platforms as method

Author: Douman

src/unix/bsd/apple/mod.rs

@@ -50,7 +50,19 @@ impl siginfo_t {
     }
 
     pub unsafe fn si_value(&self) -> ::sigval {
-        self.si_value
+        #[repr(C)]
+        pub struct siginfo_timer {
+            _si_signo: ::c_int,
+            _si_errno: ::c_int,
+            _si_code: ::c_int,
+            _si_pid: ::pid_t,
+            _si_uid: ::uid_t,
+            _si_status: ::c_int,
+            _si_addr: *mut ::c_void,
+            si_value: ::sigval,
+        }
+
+        (*(self as *const siginfo_t as *const siginfo_timer)).si_value
     }
 }
 
@@ -154,9 +166,9 @@ s! {
         pub si_uid: ::uid_t,
         pub si_status: ::c_int,
         pub si_addr: *mut ::c_void,
-        pub si_value: ::sigval,
-        pub si_band: ::c_long,
-        _pad: [usize; 7],
+        //Requires it to be union for tests
+        //pub si_value: ::sigval,
+        _pad: [usize; 9],
     }
 
     pub struct sigaction {