---

yaml
---
r: 149531
b: refs/heads/try2
c: ac64db9
h: refs/heads/master
i:
  149529: 2830227
  149527: 98c27cd
v: v3

Author: huonw

[refs]

@@ -5,7 +5,7 @@ refs/heads/snap-stage3: 78a7676898d9f80ab540c6df5d4c9ce35bb50463
 refs/heads/try: 519addf6277dbafccbb4159db4b710c37eaa2ec5
 refs/tags/release-0.1: 1f5c5126e96c79d22cb7862f75304136e204f105
 refs/heads/ndm: f3868061cd7988080c30d6d5bf352a5a5fe2460b
-refs/heads/try2: 16e635cdfbb6b041886d1bccd28fa5e7e34c9f47
+refs/heads/try2: ac64db94bf1d009a43e7f3729434417bd2e59662
 refs/heads/dist-snap: ba4081a5a8573875fed17545846f6f6902c8ba8d
 refs/tags/release-0.2: c870d2dffb391e14efb05aa27898f1f6333a9596
 refs/tags/release-0.3: b5f0d0f648d9a6153664837026ba1be43d3e2503

branches/try2/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