From b2c9a8747703923585598790ba89ba2a364297f4 Mon Sep 17 00:00:00 2001
From: Yury Melnichek <melnichek@gmail.com>
Date: Wed, 18 May 2011 15:23:24 +0200
Subject: [PATCH] Use Swap() in buffer_vector when growing from the static
 array to the dynamic vector.

---
 base/buffer_vector.hpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/base/buffer_vector.hpp b/base/buffer_vector.hpp
index 718b32e2ee..d58da28463 100644
--- a/base/buffer_vector.hpp
+++ b/base/buffer_vector.hpp
@@ -177,8 +177,11 @@ public:
 private:
   void SwitchToDynamic()
   {
+    ASSERT_NOT_EQUAL(m_size, USE_DYNAMIC, ());
+    ASSERT_EQUAL(m_dynamic.size(), 0, ());
+    m_dynamic.insert(m_dynamic.end(), m_size, T());
     for (size_t i = 0; i < m_size; ++i)
-      m_dynamic.push_back(m_static[i]);
+      Swap(m_static[i], m_dynamic[i]);
     m_size = USE_DYNAMIC;
   }
 };