From 2e336270c89ce49d405df7863b4e13701504bd2c Mon Sep 17 00:00:00 2001
From: Szymon Walter <walter.szymon.98@gmail.com>
Date: Mon, 19 Mar 2018 17:41:42 +0100
Subject: [PATCH] fix some slicing issues

---
 src/buffer/mod.rs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/buffer/mod.rs b/src/buffer/mod.rs
index 9051e66..6a7d137 100644
--- a/src/buffer/mod.rs
+++ b/src/buffer/mod.rs
@@ -306,11 +306,13 @@ mod file {
             range: Range<usize>,
         ) -> BufferSlice<'a, u8> {
             let index = range.start;
-            let mut vec = Vec::with_capacity(range.end - range.start);
+            let len = range.end - range.start;
+            let mut vec = Vec::with_capacity(len);
+            vec.set_len(len);
             let mut refmut = self.borrow_mut();
             refmut
                 .seek(SeekFrom::Start(index as u64))
-                .and_then(|_| refmut.read_exact(&mut vec[range]))
+                .and_then(|_| refmut.read_exact(&mut vec[..]))
                 .unwrap_or_else(|err| {
                     panic!("could't read from File Buffer: {:?}", err)
                 });