Use io::Error::new_const everywhere to avoid allocations.

1 files changed, 2 insertions, 2 deletions

diff --git a/library/std/src/io/impls.rs b/library/std/src/io/impls.rs
index 9870cfc4c95..6891bd8a664 100644
--- a/library/std/src/io/impls.rs
+++ b/library/std/src/io/impls.rs
@@ -263,7 +263,7 @@ impl Read for &[u8] {
     #[inline]
     fn read_exact(&mut self, buf: &mut [u8]) -> io::Result<()> {
         if buf.len() > self.len() {
-            return Err(Error::new(ErrorKind::UnexpectedEof, "failed to fill whole buffer"));
+            return Err(Error::new_const(ErrorKind::UnexpectedEof, &"failed to fill whole buffer"));
         }
         let (a, b) = self.split_at(buf.len());
 
@@ -345,7 +345,7 @@ impl Write for &mut [u8] {
         if self.write(data)? == data.len() {
             Ok(())
         } else {
-            Err(Error::new(ErrorKind::WriteZero, "failed to write whole buffer"))
+            Err(Error::new_const(ErrorKind::WriteZero, &"failed to write whole buffer"))
         }
     }