1 files changed, 35 insertions, 0 deletions
diff --git a/src/libstd/io/impls.rs b/src/libstd/io/impls.rs
index b7f82e65299..1fb9f12dd90 100644
--- a/src/libstd/io/impls.rs
+++ b/src/libstd/io/impls.rs
@@ -21,6 +21,11 @@ impl<R: Read + ?Sized> Read for &mut R {
     }
 
     #[inline]
+    fn can_read_vectored(&self) -> bool {
+        (**self).can_read_vectored()
+    }
+
+    #[inline]
     unsafe fn initializer(&self) -> Initializer {
         (**self).initializer()
     }
@@ -53,6 +58,11 @@ impl<W: Write + ?Sized> Write for &mut W {
     }
 
     #[inline]
+    fn can_write_vectored(&self) -> bool {
+        (**self).can_write_vectored()
+    }
+
+    #[inline]
     fn flush(&mut self) -> io::Result<()> {
         (**self).flush()
     }
@@ -110,6 +120,11 @@ impl<R: Read + ?Sized> Read for Box<R> {
     }
 
     #[inline]
+    fn can_read_vectored(&self) -> bool {
+        (**self).can_read_vectored()
+    }
+
+    #[inline]
     unsafe fn initializer(&self) -> Initializer {
         (**self).initializer()
     }
@@ -142,6 +157,11 @@ impl<W: Write + ?Sized> Write for Box<W> {
     }
 
     #[inline]
+    fn can_write_vectored(&self) -> bool {
+        (**self).can_write_vectored()
+    }
+
+    #[inline]
     fn flush(&mut self) -> io::Result<()> {
         (**self).flush()
     }
@@ -241,6 +261,11 @@ impl Read for &[u8] {
     }
 
     #[inline]
+    fn can_read_vectored(&self) -> bool {
+        true
+    }
+
+    #[inline]
     unsafe fn initializer(&self) -> Initializer {
         Initializer::nop()
     }
@@ -317,6 +342,11 @@ impl Write for &mut [u8] {
     }
 
     #[inline]
+    fn can_write_vectored(&self) -> bool {
+        true
+    }
+
+    #[inline]
     fn write_all(&mut self, data: &[u8]) -> io::Result<()> {
         if self.write(data)? == data.len() {
             Ok(())
@@ -352,6 +382,11 @@ impl Write for Vec<u8> {
     }
 
     #[inline]
+    fn can_write_vectored(&self) -> bool {
+        true
+    }
+
+    #[inline]
     fn write_all(&mut self, buf: &[u8]) -> io::Result<()> {
         self.extend_from_slice(buf);
         Ok(())