diff options
Diffstat (limited to 'libgo/go/io/io.go')
| -rw-r--r-- | libgo/go/io/io.go | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/libgo/go/io/io.go b/libgo/go/io/io.go index 2010770e6a4..9cc3086c19b 100644 --- a/libgo/go/io/io.go +++ b/libgo/go/io/io.go @@ -368,6 +368,9 @@ func Copy(dst Writer, src Reader) (written int64, err error) { // provided buffer (if one is required) rather than allocating a // temporary one. If buf is nil, one is allocated; otherwise if it has // zero length, CopyBuffer panics. +// +// If either src implements WriterTo or dst implements ReaderFrom, +// buf will not be used to perform the copy. func CopyBuffer(dst Writer, src Reader, buf []byte) (written int64, err error) { if buf != nil && len(buf) == 0 { panic("empty buffer in io.CopyBuffer") |