io: remove manual SectionReader.Size in SectionReader.ReadAt

Change-Id: Ib3e8953dbdefa2b78c31b1bcbf0909bce248e423
Reviewed-on: https://go-review.googlesource.com/c/go/+/500475
Reviewed-by: Robert Griesemer <gri@google.com>
Reviewed-by: qiulaidongfeng <2645477756@qq.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Robert Griesemer <gri@golang.org>
TryBot-Result: Gopher Robot <gobot@golang.org>
Run-TryBot: Ian Lance Taylor <iant@google.com>

diff --git a/src/io/io.go b/src/io/io.go
index 01f36e0ce133b7fe7083858b712fc90343133dfe..ce269a7b9f568dcc012ca0bac3f8cdccd91e90d8 100644 (file)
--- a/src/io/io.go
+++ b/src/io/io.go
@@ -540,7 +540,7 @@ func (s *SectionReader) Seek(offset int64, whence int) (int64, error) {
 }
 
 func (s *SectionReader) ReadAt(p []byte, off int64) (n int, err error) {
-       if off < 0 || off >= s.limit-s.base {
+       if off < 0 || off >= s.Size() {
                return 0, EOF
        }
        off += s.base