---

yaml
---
r: 196248
b: refs/heads/tmp
c: 240734c
h: refs/heads/master
v: v3

Author: bcoopers

[refs]

@@ -32,7 +32,7 @@ refs/heads/building: 126db549b038c84269a1e4fe46f051b2c15d6970
 refs/heads/beta: 9854143cba679834bc4ef932858cd5303f015a0e
 refs/heads/windistfix: 7608dbad651f02e837ed05eef3d74a6662a6e928
 refs/tags/1.0.0-alpha: e42bd6d93a1d3433c486200587f8f9e12590a4d7
-refs/heads/tmp: 8d3e55908ae0e51f04c170133c9f9739886b8e2e
+refs/heads/tmp: 240734c31e529557583a0dc8e97abf858b4a375d
 refs/tags/1.0.0-alpha.2: 4c705f6bc559886632d3871b04f58aab093bfa2f
 refs/tags/homu-tmp: 53a183f0274316596bf9405944d4f0468d8c93e4
 refs/heads/gate: 97c84447b65164731087ea82685580cc81424412

branches/tmp/src/libstd/io/mod.rs

@@ -101,18 +101,14 @@ fn append_to_string<F>(buf: &mut String, f: F) -> Result<usize>
 fn read_to_end<R: Read + ?Sized>(r: &mut R, buf: &mut Vec<u8>) -> Result<usize> {
     let start_len = buf.len();
     let mut len = start_len;
-    let min_cap_bump = 16;
+    let mut new_write_size = 16;
     let ret;
     loop {
         if len == buf.len() {
-            if buf.capacity() == buf.len() {
-                // reserve() rounds up our request such that every request
-                // (with maybe the exception of the first request) for the
-                // same amount of space doubles our capacity.
-                buf.reserve(min_cap_bump);
+            if new_write_size < DEFAULT_BUF_SIZE {
+                new_write_size *= 2;
             }
-            let new_area = buf.capacity() - buf.len();
-            buf.extend(iter::repeat(0).take(new_area));
+            buf.extend(iter::repeat(0).take(new_write_size));
         }
 
         match r.read(&mut buf[len..]) {