From 5e91ac10b65a4c20915868d3af3c06f1d3d3cada Mon Sep 17 00:00:00 2001
From: Jason Toffaletti <jason@topsy.com>
Date: Tue, 8 Oct 2013 08:09:13 -0700
Subject: minor

---
 src/libstd/rt/mpmc_bounded_queue.rs | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

(limited to 'src/libstd/rt')

diff --git a/src/libstd/rt/mpmc_bounded_queue.rs b/src/libstd/rt/mpmc_bounded_queue.rs
index c0c7d281136..ea5d1050c18 100644
--- a/src/libstd/rt/mpmc_bounded_queue.rs
+++ b/src/libstd/rt/mpmc_bounded_queue.rs
@@ -57,8 +57,12 @@ struct Queue<T> {
 impl<T: Send> State<T> {
     fn with_capacity(capacity: uint) -> State<T> {
         let capacity = if capacity < 2 || (capacity & (capacity - 1)) != 0 {
-            // use next power of 2 as capacity
-            2f64.pow(&((capacity as f64).log2().floor()+1f64)) as uint
+            if capacity < 2 {
+                2u
+            } else {
+                // use next power of 2 as capacity
+                2f64.pow(&((capacity as f64).log2().ceil())) as uint
+            }
         } else {
             capacity
         };
-- 
cgit 1.4.1-3-g733a5