Add `Read::initializer`.

This is an API that allows types to indicate that they can be passed
buffers of uninitialized memory which can improve performance.

1 files changed, 0 insertions, 5 deletions

diff --git a/src/libstd/sys/redox/fd.rs b/src/libstd/sys/redox/fd.rs
index b6de68a9dc1..1b37aafef56 100644
--- a/src/libstd/sys/redox/fd.rs
+++ b/src/libstd/sys/redox/fd.rs
@@ -14,7 +14,6 @@ use io::{self, Read};
 use mem;
 use sys::{cvt, syscall};
 use sys_common::AsInner;
-use sys_common::io::read_to_end_uninitialized;
 
 pub struct FileDesc {
     fd: usize,
@@ -78,10 +77,6 @@ impl<'a> Read for &'a FileDesc {
     fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
         (**self).read(buf)
     }
-
-    fn read_to_end(&mut self, buf: &mut Vec<u8>) -> io::Result<usize> {
-        unsafe { read_to_end_uninitialized(self, buf) }
-    }
 }
 
 impl AsInner<usize> for FileDesc {