From 5bf0e513b9bea5d332dcd6d4dfb62620e05e489c Mon Sep 17 00:00:00 2001
From: Sergio Benitez <sb@sergio.bz>
Date: Wed, 29 Mar 2017 01:36:34 -0700
Subject: [PATCH 1/3] Add from_vec method for efficient creation from a Vec.

---
 lib.rs | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

diff --git a/lib.rs b/lib.rs
index e9ba620..9d03ee1 100644
--- a/lib.rs
+++ b/lib.rs
@@ -207,6 +207,31 @@ impl<A: Array> SmallVec<A> {
         }
     }
 
+    /// Construct a new `SmallVec` from a `Vec<A::Item>` without copying
+    /// elements.
+    ///
+    /// ```rust
+    /// use smallvec::SmallVec;
+    ///
+    /// let vec = vec![1, 2, 3, 4, 5];
+    /// let small_vec: SmallVec<[_; 3]> = SmallVec::from_vec(vec);
+    ///
+    /// assert_eq!(&*small_vec, &[1, 2, 3, 4, 5]);
+    /// ```
+    #[inline]
+    pub fn from_vec(mut vec: Vec<A::Item>) -> SmallVec<A> {
+        let (ptr, cap, len) = (vec.as_mut_ptr(), vec.capacity(), vec.len());
+        mem::forget(vec);
+
+        SmallVec {
+            len: len,
+            data: SmallVecData::Heap {
+                ptr: ptr,
+                capacity: cap
+            }
+        }
+    }
+
     /// Sets the length of a vector.
     ///
     /// This will explicitly set the size of the vector, without actually

From bd892e83fdb36bab65923880e320008a0f1a1152 Mon Sep 17 00:00:00 2001
From: Sergio Benitez <sb@sergio.bz>
Date: Wed, 29 Mar 2017 01:37:00 -0700
Subject: [PATCH 2/3] Bump to 0.3.3.

---
 Cargo.toml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Cargo.toml b/Cargo.toml
index e1bbd05..2a64c04 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "smallvec"
-version = "0.3.2"
+version = "0.3.3"
 authors = ["Simon Sapin <simon.sapin@exyr.org>"]
 license = "MPL-2.0"
 repository = "https://github.com/servo/rust-smallvec"

From 0bf014131b4e7af8df5b256f58cda3ded51f1c42 Mon Sep 17 00:00:00 2001
From: Sergio Benitez <sb@sergio.bz>
Date: Wed, 29 Mar 2017 03:14:25 -0700
Subject: [PATCH 3/3] Add tests for from_vec.

---
 lib.rs | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/lib.rs b/lib.rs
index 9d03ee1..f03108a 100644
--- a/lib.rs
+++ b/lib.rs
@@ -1388,4 +1388,37 @@ pub mod tests {
         let vec = SmallVec::<[u8; 2]>::from_iter(0..3);
         assert_eq!(vec.into_vec(), vec![0, 1, 2]);
     }
+
+    #[test]
+    fn test_from_vec() {
+        let vec = vec![];
+        let small_vec: SmallVec<[u8; 3]> = SmallVec::from_vec(vec);
+        assert_eq!(&*small_vec, &[]);
+        drop(small_vec);
+
+        let vec = vec![];
+        let small_vec: SmallVec<[u8; 1]> = SmallVec::from_vec(vec);
+        assert_eq!(&*small_vec, &[]);
+        drop(small_vec);
+
+        let vec = vec![1];
+        let small_vec: SmallVec<[u8; 3]> = SmallVec::from_vec(vec);
+        assert_eq!(&*small_vec, &[1]);
+        drop(small_vec);
+
+        let vec = vec![1, 2, 3];
+        let small_vec: SmallVec<[u8; 3]> = SmallVec::from_vec(vec);
+        assert_eq!(&*small_vec, &[1, 2, 3]);
+        drop(small_vec);
+
+        let vec = vec![1, 2, 3, 4, 5];
+        let small_vec: SmallVec<[u8; 3]> = SmallVec::from_vec(vec);
+        assert_eq!(&*small_vec, &[1, 2, 3, 4, 5]);
+        drop(small_vec);
+
+        let vec = vec![1, 2, 3, 4, 5];
+        let small_vec: SmallVec<[u8; 1]> = SmallVec::from_vec(vec);
+        assert_eq!(&*small_vec, &[1, 2, 3, 4, 5]);
+        drop(small_vec);
+    }
 }