---

yaml
---
r: 104509
b: refs/heads/try
c: ac64db9
h: refs/heads/master
i:
  104507: c9d0bde
v: v3

Author: huonw

[refs]

@@ -2,7 +2,7 @@
 refs/heads/master: 62f1d68439dcfd509eaca29887afa97f22938373
 refs/heads/snap-stage1: e33de59e47c5076a89eadeb38f4934f58a3618a6
 refs/heads/snap-stage3: 6e7f170fedd3c526a643c0b2d13863acd982be02
-refs/heads/try: 16e635cdfbb6b041886d1bccd28fa5e7e34c9f47
+refs/heads/try: ac64db94bf1d009a43e7f3729434417bd2e59662
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b
 refs/heads/try2: 147ecfdd8221e4a4d4e090486829a06da1e0ca3c

branches/try/src/libstd/vec_ng.rs

@@ -18,6 +18,7 @@ use container::Container;
 use iter::{DoubleEndedIterator, FromIterator, Iterator};
 use libc::{free, c_void};
 use mem::{size_of, move_val_init};
+use num;
 use num::CheckedMul;
 use ops::Drop;
 use option::{None, Option, Some};
@@ -136,6 +137,12 @@ impl<T> Vec<T> {
         self.cap
     }
 
+    pub fn reserve(&mut self, capacity: uint) {
+        if capacity >= self.len {
+            self.reserve_exact(num::next_power_of_two(capacity))
+        }
+    }
+
     pub fn reserve_exact(&mut self, capacity: uint) {
         if capacity >= self.len {
             let size = capacity.checked_mul(&size_of::<T>()).expect("capacity overflow");
@@ -296,7 +303,7 @@ impl<T> Vec<T> {
         let len = self.len();
         assert!(index <= len);
         // space for the new element
-        self.reserve_exact(len + 1);
+        self.reserve(len + 1);
 
         unsafe { // infallible
             // The spot to put the new value