From 05a814279b12beaf80aa636667199a80824d5f62 Mon Sep 17 00:00:00 2001
From: Tamir Duberstein <tamird@gmail.com>
Date: Wed, 5 Aug 2015 17:50:18 -0400
Subject: [PATCH] Better FFI discipline

---
 src/libstd/rand/os.rs             | 4 +---
 src/libstd/rt/unwind/seh64_gnu.rs | 4 ++--
 2 files changed, 3 insertions(+), 5 deletions(-)

diff --git a/src/libstd/rand/os.rs b/src/libstd/rand/os.rs
index 9ae9455848e..bd31fe08421 100644
--- a/src/libstd/rand/os.rs
+++ b/src/libstd/rand/os.rs
@@ -205,9 +205,7 @@ pub struct OsRng {
         _dummy: (),
     }
 
-    // Fake definition; this is actually a struct, but we don't use the
-    // contents here.
-    type SecRandom = c_void;
+    enum SecRandom {}
 
     #[allow(non_upper_case_globals)]
     const kSecRandomDefault: *const SecRandom = 0 as *const SecRandom;
diff --git a/src/libstd/rt/unwind/seh64_gnu.rs b/src/libstd/rt/unwind/seh64_gnu.rs
index 6a061a55fc2..847ba47ff72 100644
--- a/src/libstd/rt/unwind/seh64_gnu.rs
+++ b/src/libstd/rt/unwind/seh64_gnu.rs
@@ -60,8 +60,8 @@ pub struct EXCEPTION_RECORD {
     ExceptionInformation: [ULONG_PTR; 15],
 }
 
-pub type CONTEXT = c_void;
-pub type UNWIND_HISTORY_TABLE = c_void;
+pub enum CONTEXT {}
+pub enum UNWIND_HISTORY_TABLE {}
 
 #[repr(C)]
 pub struct RUNTIME_FUNCTION {
-- 
2.44.0