net: don't return io.EOF from zero byte reads on Plan 9

Updates #15735. Fixes #15741. Change-Id: Ic4ad7e948e8c3ab5feffef89d7a37417f82722a1 Reviewed-on: https://go-review.googlesource.com/23199 Run-TryBot: Mikio Hara <[email protected]> TryBot-Result: Gobot Gobot <[email protected]> Reviewed-by: Brad Fitzpatrick <[email protected]>
golang · May 19, 2016 · 8d428ed · 8d428ed
1 parent 5bcdd63
commit 8d428ed
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/net/fd_plan9.go b/src/net/fd_plan9.go
@@ -76,6 +76,9 @@ func (fd *netFD) Read(b []byte) (n int, err error) {
 		return 0, err
 	}
 	defer fd.readUnlock()
+	if len(b) == 0 {
+		return 0, nil
+	}
 	n, err = fd.data.Read(b)
 	if isHangup(err) {
 		err = io.EOF