buffered-reader: Fix BufferedReaderGeneric::data_hard.

  - Calling BufferedReaderGeneric::data_hard with amount greater than
    0 on an empty file should return an error, not an empty buffer.

1 files changed, 5 insertions, 1 deletions

diff --git a/buffered-reader/src/generic.rs b/buffered-reader/src/generic.rs
index b6fe7aa2..ed187eff 100644
--- a/buffered-reader/src/generic.rs
+++ b/buffered-reader/src/generic.rs
@@ -177,7 +177,11 @@ impl<T: io::Read, C> BufferedReaderGeneric<T, C> {
                 }
             },
             None if self.saw_eof => {
-                return Ok(&b""[..]);
+                if hard && amount > 0 {
+                    Err(Error::new(ErrorKind::UnexpectedEof, "EOF"))
+                } else {
+                    Ok(&b""[..])
+                }
             },
             None => {
                 unreachable!();