diff options
Diffstat (limited to 'src/bufio/bufio.go')
| -rw-r--r-- | src/bufio/bufio.go | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/src/bufio/bufio.go b/src/bufio/bufio.go index d589701e19..5244ce2e0c 100644 --- a/src/bufio/bufio.go +++ b/src/bufio/bufio.go @@ -519,9 +519,11 @@ func (b *Reader) WriteTo(w io.Writer) (n int64, err error) { b.lastByte = -1 b.lastRuneSize = -1 - n, err = b.writeBuf(w) - if err != nil { - return + if b.r < b.w { + n, err = b.writeBuf(w) + if err != nil { + return + } } if r, ok := b.rd.(io.WriterTo); ok { |