rollup merge of #19902: alexcrichton/second-pass-mem

This commit stabilizes the `mem` and `default` modules of std.

4 files changed, 8 insertions, 0 deletions

diff --git a/src/libstd/collections/hash/map.rs b/src/libstd/collections/hash/map.rs
index d22e7b2f764..08f5544effb 100644
--- a/src/libstd/collections/hash/map.rs
+++ b/src/libstd/collections/hash/map.rs
@@ -1288,7 +1288,9 @@ impl<K: Eq + Hash<S> + Show, V: Show, S, H: Hasher<S>> Show for HashMap<K, V, H>
     }
 }
 
+#[stable]
 impl<K: Eq + Hash<S>, V, S, H: Hasher<S> + Default> Default for HashMap<K, V, H> {
+    #[stable]
     fn default() -> HashMap<K, V, H> {
         HashMap::with_hasher(Default::default())
     }
diff --git a/src/libstd/collections/hash/set.rs b/src/libstd/collections/hash/set.rs
index c4356d91064..e00c62cbe2d 100644
--- a/src/libstd/collections/hash/set.rs
+++ b/src/libstd/collections/hash/set.rs
@@ -608,7 +608,9 @@ impl<T: Eq + Hash<S>, S, H: Hasher<S> + Default> Extend<T> for HashSet<T, H> {
     }
 }
 
+#[stable]
 impl<T: Eq + Hash<S>, S, H: Hasher<S> + Default> Default for HashSet<T, H> {
+    #[stable]
     fn default() -> HashSet<T, H> {
         HashSet::with_hasher(Default::default())
     }
diff --git a/src/libstd/hash.rs b/src/libstd/hash.rs
index a63abec96d5..52e3c718b2d 100644
--- a/src/libstd/hash.rs
+++ b/src/libstd/hash.rs
@@ -95,7 +95,9 @@ impl Hasher<sip::SipState> for RandomSipHasher {
     }
 }
 
+#[stable]
 impl Default for RandomSipHasher {
+    #[stable]
     #[inline]
     fn default() -> RandomSipHasher {
         RandomSipHasher::new()
diff --git a/src/libstd/io/mod.rs b/src/libstd/io/mod.rs
index 6fc9d0bd172..6a6d467e86c 100644
--- a/src/libstd/io/mod.rs
+++ b/src/libstd/io/mod.rs
@@ -1911,7 +1911,9 @@ bitflags! {
 }
 
 
+#[stable]
 impl Default for FilePermission {
+    #[stable]
     #[inline]
     fn default() -> FilePermission { FilePermission::empty() }
 }