io: remove manual SectionReader.Size in SectionReader.ReadAt

Jorropo · gopherbot · commit 460dc37c885b · 2023-08-05T23:26:21.000Z
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
@@ -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

Original file line number	Diff line number	Diff line change
`@@ -540,7 +540,7 @@ func (s *SectionReader) Seek(offset int64, whence int) (int64, error) {`
`540`	`540`	`}`
`541`	`541`
`542`	`542`	`func (s *SectionReader) ReadAt(p []byte, off int64) (n int, err error) {`
`543`		`- if off < 0 \|\| off >= s.limit-s.base {`
	`543`	`+ if off < 0 \|\| off >= s.Size() {`
`544`	`544`	`return 0, EOF`
`545`	`545`	`}`
`546`	`546`	`off += s.base`