forked from mirrors/tar-split
archive/tar: make Reader.Read errors persistent
If the stream is in an inconsistent state, it does not make sense that Reader.Read can be called and possibly succeed. Change-Id: I9d1c5a1300b2c2b45232188aa7999e350809dcf2 Reviewed-on: https://go-review.googlesource.com/15177 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
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@ -871,9 +871,13 @@ func (tr *Reader) numBytes() int64 {
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// It returns 0, io.EOF when it reaches the end of that entry,
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// until Next is called to advance to the next entry.
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func (tr *Reader) Read(b []byte) (n int, err error) {
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if tr.err != nil {
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return 0, tr.err
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}
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if tr.curr == nil {
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return 0, io.EOF
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}
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n, err = tr.curr.Read(b)
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if err != nil && err != io.EOF {
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tr.err = err
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