Bump github.com/containers/storage from 1.32.1 to 1.32.2

Bumps [github.com/containers/storage](https://github.com/containers/storage) from 1.32.1 to 1.32.2.
- [Release notes](https://github.com/containers/storage/releases)
- [Changelog](https://github.com/containers/storage/blob/master/docs/containers-storage-changes.md)
- [Commits](https://github.com/containers/storage/compare/v1.32.1...v1.32.2)

---
updated-dependencies:
- dependency-name: github.com/containers/storage
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/github.com/klauspost/compress/zstd/blockdec.go

@@ -144,7 +144,7 @@ func (b *blockDec) reset(br byteBuffer, windowSize uint64) error {
 		}
 		cSize = 1
 	case blockTypeCompressed:
-		if debug {
+		if debugDecoder {
 			println("Data size on stream:", cSize)
 		}
 		b.RLESize = 0
@@ -153,7 +153,7 @@ func (b *blockDec) reset(br byteBuffer, windowSize uint64) error {
 			maxSize = int(windowSize)
 		}
 		if cSize > maxCompressedBlockSize || uint64(cSize) > b.WindowSize {
-			if debug {
+			if debugDecoder {
 				printf("compressed block too big: csize:%d block: %+v\n", uint64(cSize), b)
 			}
 			return ErrCompressedSizeTooBig
@@ -179,7 +179,7 @@ func (b *blockDec) reset(br byteBuffer, windowSize uint64) error {
 	}
 	b.data, err = br.readBig(cSize, b.dataStorage)
 	if err != nil {
-		if debug {
+		if debugDecoder {
 			println("Reading block:", err, "(", cSize, ")", len(b.data))
 			printf("%T", br)
 		}
@@ -249,7 +249,7 @@ func (b *blockDec) startDecoder() {
 				b:   b.dst,
 				err: err,
 			}
-			if debug {
+			if debugDecoder {
 				println("Decompressed to", len(b.dst), "bytes, error:", err)
 			}
 			b.result <- o
@@ -264,7 +264,7 @@ func (b *blockDec) startDecoder() {
 		default:
 			panic("Invalid block type")
 		}
-		if debug {
+		if debugDecoder {
 			println("blockDec: Finished block")
 		}
 	}
@@ -297,7 +297,7 @@ func (b *blockDec) decodeBuf(hist *history) error {
 		b.dst = hist.b
 		hist.b = nil
 		err := b.decodeCompressed(hist)
-		if debug {
+		if debugDecoder {
 			println("Decompressed to total", len(b.dst), "bytes, hash:", xxhash.Sum64(b.dst), "error:", err)
 		}
 		hist.b = b.dst
@@ -390,7 +390,7 @@ func (b *blockDec) decodeCompressed(hist *history) error {
 			in = in[5:]
 		}
 	}
-	if debug {
+	if debugDecoder {
 		println("literals type:", litType, "litRegenSize:", litRegenSize, "litCompSize:", litCompSize, "sizeFormat:", sizeFormat, "4X:", fourStreams)
 	}
 	var literals []byte
@@ -428,7 +428,7 @@ func (b *blockDec) decodeCompressed(hist *history) error {
 			literals[i] = v
 		}
 		in = in[1:]
-		if debug {
+		if debugDecoder {
 			printf("Found %d RLE compressed literals\n", litRegenSize)
 		}
 	case literalsBlockTreeless:
@@ -439,7 +439,7 @@ func (b *blockDec) decodeCompressed(hist *history) error {
 		// Store compressed literals, so we defer decoding until we get history.
 		literals = in[:litCompSize]
 		in = in[litCompSize:]
-		if debug {
+		if debugDecoder {
 			printf("Found %d compressed literals\n", litCompSize)
 		}
 	case literalsBlockCompressed:
@@ -481,7 +481,7 @@ func (b *blockDec) decodeCompressed(hist *history) error {
 		if len(literals) != litRegenSize {
 			return fmt.Errorf("literal output size mismatch want %d, got %d", litRegenSize, len(literals))
 		}
-		if debug {
+		if debugDecoder {
 			printf("Decompressed %d literals into %d bytes\n", litCompSize, litRegenSize)
 		}
 	}
@@ -532,12 +532,12 @@ func (b *blockDec) decodeCompressed(hist *history) error {
 		br := byteReader{b: in, off: 0}
 		compMode := br.Uint8()
 		br.advance(1)
-		if debug {
+		if debugDecoder {
 			printf("Compression modes: 0b%b", compMode)
 		}
 		for i := uint(0); i < 3; i++ {
 			mode := seqCompMode((compMode >> (6 - i*2)) & 3)
-			if debug {
+			if debugDecoder {
 				println("Table", tableIndex(i), "is", mode)
 			}
 			var seq *sequenceDec
@@ -568,7 +568,7 @@ func (b *blockDec) decodeCompressed(hist *history) error {
 				}
 				dec.setRLE(symb)
 				seq.fse = dec
-				if debug {
+				if debugDecoder {
 					printf("RLE set to %+v, code: %v", symb, v)
 				}
 			case compModeFSE:
@@ -584,7 +584,7 @@ func (b *blockDec) decodeCompressed(hist *history) error {
 					println("Transform table error:", err)
 					return err
 				}
-				if debug {
+				if debugDecoder {
 					println("Read table ok", "symbolLen:", dec.symbolLen)
 				}
 				seq.fse = dec
@@ -652,7 +652,7 @@ func (b *blockDec) decodeCompressed(hist *history) error {
 	if huff != nil {
 		hist.huffTree = huff
 	}
-	if debug {
+	if debugDecoder {
 		println("Final literals:", len(literals), "hash:", xxhash.Sum64(literals), "and", nSeqs, "sequences.")
 	}
 
@@ -669,7 +669,7 @@ func (b *blockDec) decodeCompressed(hist *history) error {
 	if err != nil {
 		return err
 	}
-	if debug {
+	if debugDecoder {
 		println("History merged ok")
 	}
 	br := &bitReader{}
@@ -728,7 +728,7 @@ func (b *blockDec) decodeCompressed(hist *history) error {
 	}
 	hist.append(b.dst)
 	hist.recentOffsets = seqs.prevOffset
-	if debug {
+	if debugDecoder {
 		println("Finished block with literals:", len(literals), "and", nSeqs, "sequences.")
 	}
 

vendor/github.com/klauspost/compress/zstd/blockenc.go

@@ -156,7 +156,7 @@ func (h *literalsHeader) setSize(regenLen int) {
 	switch {
 	case inBits < 5:
 		lh |= (uint64(regenLen) << 3) | (1 << 60)
-		if debug {
+		if debugEncoder {
 			got := int(lh>>3) & 0xff
 			if got != regenLen {
 				panic(fmt.Sprint("litRegenSize = ", regenLen, "(want) != ", got, "(got)"))
@@ -184,7 +184,7 @@ func (h *literalsHeader) setSizes(compLen, inLen int, single bool) {
 			lh |= 1 << 2
 		}
 		lh |= (uint64(inLen) << 4) | (uint64(compLen) << (10 + 4)) | (3 << 60)
-		if debug {
+		if debugEncoder {
 			const mmask = (1 << 24) - 1
 			n := (lh >> 4) & mmask
 			if int(n&1023) != inLen {
@@ -312,7 +312,7 @@ func (b *blockEnc) encodeRaw(a []byte) {
 	bh.setType(blockTypeRaw)
 	b.output = bh.appendTo(b.output[:0])
 	b.output = append(b.output, a...)
-	if debug {
+	if debugEncoder {
 		println("Adding RAW block, length", len(a), "last:", b.last)
 	}
 }
@@ -325,7 +325,7 @@ func (b *blockEnc) encodeRawTo(dst, src []byte) []byte {
 	bh.setType(blockTypeRaw)
 	dst = bh.appendTo(dst)
 	dst = append(dst, src...)
-	if debug {
+	if debugEncoder {
 		println("Adding RAW block, length", len(src), "last:", b.last)
 	}
 	return dst
@@ -339,7 +339,7 @@ func (b *blockEnc) encodeLits(lits []byte, raw bool) error {
 
 	// Don't compress extremely small blocks
 	if len(lits) < 8 || (len(lits) < 32 && b.dictLitEnc == nil) || raw {
-		if debug {
+		if debugEncoder {
 			println("Adding RAW block, length", len(lits), "last:", b.last)
 		}
 		bh.setType(blockTypeRaw)
@@ -371,7 +371,7 @@ func (b *blockEnc) encodeLits(lits []byte, raw bool) error {
 
 	switch err {
 	case huff0.ErrIncompressible:
-		if debug {
+		if debugEncoder {
 			println("Adding RAW block, length", len(lits), "last:", b.last)
 		}
 		bh.setType(blockTypeRaw)
@@ -379,7 +379,7 @@ func (b *blockEnc) encodeLits(lits []byte, raw bool) error {
 		b.output = append(b.output, lits...)
 		return nil
 	case huff0.ErrUseRLE:
-		if debug {
+		if debugEncoder {
 			println("Adding RLE block, length", len(lits))
 		}
 		bh.setType(blockTypeRLE)
@@ -396,12 +396,12 @@ func (b *blockEnc) encodeLits(lits []byte, raw bool) error {
 	bh.setType(blockTypeCompressed)
 	var lh literalsHeader
 	if reUsed {
-		if debug {
+		if debugEncoder {
 			println("Reused tree, compressed to", len(out))
 		}
 		lh.setType(literalsBlockTreeless)
 	} else {
-		if debug {
+		if debugEncoder {
 			println("New tree, compressed to", len(out), "tree size:", len(b.litEnc.OutTable))
 		}
 		lh.setType(literalsBlockCompressed)
@@ -517,7 +517,7 @@ func (b *blockEnc) encode(org []byte, raw, rawAllLits bool) error {
 		lh.setSize(len(b.literals))
 		b.output = lh.appendTo(b.output)
 		b.output = append(b.output, b.literals...)
-		if debug {
+		if debugEncoder {
 			println("Adding literals RAW, length", len(b.literals))
 		}
 	case huff0.ErrUseRLE:
@@ -525,22 +525,22 @@ func (b *blockEnc) encode(org []byte, raw, rawAllLits bool) error {
 		lh.setSize(len(b.literals))
 		b.output = lh.appendTo(b.output)
 		b.output = append(b.output, b.literals[0])
-		if debug {
+		if debugEncoder {
 			println("Adding literals RLE")
 		}
 	case nil:
 		// Compressed litLen...
 		if reUsed {
-			if debug {
+			if debugEncoder {
 				println("reused tree")
 			}
 			lh.setType(literalsBlockTreeless)
 		} else {
-			if debug {
+			if debugEncoder {
 				println("new tree, size:", len(b.litEnc.OutTable))
 			}
 			lh.setType(literalsBlockCompressed)
-			if debug {
+			if debugEncoder {
 				_, _, err := huff0.ReadTable(out, nil)
 				if err != nil {
 					panic(err)
@@ -548,18 +548,18 @@ func (b *blockEnc) encode(org []byte, raw, rawAllLits bool) error {
 			}
 		}
 		lh.setSizes(len(out), len(b.literals), single)
-		if debug {
+		if debugEncoder {
 			printf("Compressed %d literals to %d bytes", len(b.literals), len(out))
 			println("Adding literal header:", lh)
 		}
 		b.output = lh.appendTo(b.output)
 		b.output = append(b.output, out...)
 		b.litEnc.Reuse = huff0.ReusePolicyAllow
-		if debug {
+		if debugEncoder {
 			println("Adding literals compressed")
 		}
 	default:
-		if debug {
+		if debugEncoder {
 			println("Adding literals ERROR:", err)
 		}
 		return err
@@ -577,7 +577,7 @@ func (b *blockEnc) encode(org []byte, raw, rawAllLits bool) error {
 		n := len(b.sequences) - 0x7f00
 		b.output = append(b.output, 255, uint8(n), uint8(n>>8))
 	}
-	if debug {
+	if debugEncoder {
 		println("Encoding", len(b.sequences), "sequences")
 	}
 	b.genCodes()
@@ -611,17 +611,17 @@ func (b *blockEnc) encode(org []byte, raw, rawAllLits bool) error {
 		nSize = nSize + (nSize+2*8*16)>>4
 		switch {
 		case predefSize <= prevSize && predefSize <= nSize || forcePreDef:
-			if debug {
+			if debugEncoder {
 				println("Using predefined", predefSize>>3, "<=", nSize>>3)
 			}
 			return preDef, compModePredefined
 		case prevSize <= nSize:
-			if debug {
+			if debugEncoder {
 				println("Using previous", prevSize>>3, "<=", nSize>>3)
 			}
 			return prev, compModeRepeat
 		default:
-			if debug {
+			if debugEncoder {
 				println("Using new, predef", predefSize>>3, ". previous:", prevSize>>3, ">", nSize>>3, "header max:", cur.maxHeaderSize()>>3, "bytes")
 				println("tl:", cur.actualTableLog, "symbolLen:", cur.symbolLen, "norm:", cur.norm[:cur.symbolLen], "hist", cur.count[:cur.symbolLen])
 			}
@@ -634,7 +634,7 @@ func (b *blockEnc) encode(org []byte, raw, rawAllLits bool) error {
 	if llEnc.useRLE {
 		mode |= uint8(compModeRLE) << 6
 		llEnc.setRLE(b.sequences[0].llCode)
-		if debug {
+		if debugEncoder {
 			println("llEnc.useRLE")
 		}
 	} else {
@@ -645,7 +645,7 @@ func (b *blockEnc) encode(org []byte, raw, rawAllLits bool) error {
 	if ofEnc.useRLE {
 		mode |= uint8(compModeRLE) << 4
 		ofEnc.setRLE(b.sequences[0].ofCode)
-		if debug {
+		if debugEncoder {
 			println("ofEnc.useRLE")
 		}
 	} else {
@@ -657,7 +657,7 @@ func (b *blockEnc) encode(org []byte, raw, rawAllLits bool) error {
 	if mlEnc.useRLE {
 		mode |= uint8(compModeRLE) << 2
 		mlEnc.setRLE(b.sequences[0].mlCode)
-		if debug {
+		if debugEncoder {
 			println("mlEnc.useRLE, code: ", b.sequences[0].mlCode, "value", b.sequences[0].matchLen)
 		}
 	} else {
@@ -666,7 +666,7 @@ func (b *blockEnc) encode(org []byte, raw, rawAllLits bool) error {
 		mode |= uint8(m) << 2
 	}
 	b.output = append(b.output, mode)
-	if debug {
+	if debugEncoder {
 		printf("Compression modes: 0b%b", mode)
 	}
 	b.output, err = llEnc.writeCount(b.output)
@@ -786,7 +786,7 @@ func (b *blockEnc) encode(org []byte, raw, rawAllLits bool) error {
 
 	// Size is output minus block header.
 	bh.setSize(uint32(len(b.output)-bhOffset) - 3)
-	if debug {
+	if debugEncoder {
 		println("Rewriting block header", bh)
 	}
 	_ = bh.appendTo(b.output[bhOffset:bhOffset])

vendor/github.com/klauspost/compress/zstd/bytebuf.go

@@ -91,7 +91,7 @@ func (r *readerWrapper) readSmall(n int) ([]byte, error) {
 		if err == io.EOF {
 			return nil, io.ErrUnexpectedEOF
 		}
-		if debug {
+		if debugDecoder {
 			println("readSmall: got", n2, "want", n, "err", err)
 		}
 		return nil, err

vendor/github.com/klauspost/compress/zstd/decoder.go

@@ -113,9 +113,6 @@ func NewReader(r io.Reader, opts ...DOption) (*Decoder, error) {
 // Returns the number of bytes written and any error that occurred.
 // When the stream is done, io.EOF will be returned.
 func (d *Decoder) Read(p []byte) (int, error) {
-	if d.stream == nil {
-		return 0, ErrDecoderNilInput
-	}
 	var n int
 	for {
 		if len(d.current.b) > 0 {
@@ -138,7 +135,7 @@ func (d *Decoder) Read(p []byte) (int, error) {
 		}
 	}
 	if len(d.current.b) > 0 {
-		if debug {
+		if debugDecoder {
 			println("returning", n, "still bytes left:", len(d.current.b))
 		}
 		// Only return error at end of block
@@ -147,7 +144,7 @@ func (d *Decoder) Read(p []byte) (int, error) {
 	if d.current.err != nil {
 		d.drainOutput()
 	}
-	if debug {
+	if debugDecoder {
 		println("returning", n, d.current.err, len(d.decoders))
 	}
 	return n, d.current.err
@@ -167,20 +164,17 @@ func (d *Decoder) Reset(r io.Reader) error {
 
 	if r == nil {
 		d.current.err = ErrDecoderNilInput
+		if len(d.current.b) > 0 {
+			d.current.b = d.current.b[:0]
+		}
 		d.current.flushed = true
 		return nil
 	}
 
-	if d.stream == nil {
-		d.stream = make(chan decodeStream, 1)
-		d.streamWg.Add(1)
-		go d.startStreamDecoder(d.stream)
-	}
-
-	// If bytes buffer and < 1MB, do sync decoding anyway.
-	if bb, ok := r.(byter); ok && bb.Len() < 1<<20 {
+	// If bytes buffer and < 5MB, do sync decoding anyway.
+	if bb, ok := r.(byter); ok && bb.Len() < 5<<20 {
 		bb2 := bb
-		if debug {
+		if debugDecoder {
 			println("*bytes.Buffer detected, doing sync decode, len:", bb.Len())
 		}
 		b := bb2.Bytes()
@@ -196,12 +190,18 @@ func (d *Decoder) Reset(r io.Reader) error {
 		d.current.b = dst
 		d.current.err = err
 		d.current.flushed = true
-		if debug {
+		if debugDecoder {
 			println("sync decode to", len(dst), "bytes, err:", err)
 		}
 		return nil
 	}
 
+	if d.stream == nil {
+		d.stream = make(chan decodeStream, 1)
+		d.streamWg.Add(1)
+		go d.startStreamDecoder(d.stream)
+	}
+
 	// Remove current block.
 	d.current.decodeOutput = decodeOutput{}
 	d.current.err = nil
@@ -225,7 +225,7 @@ func (d *Decoder) drainOutput() {
 		d.current.cancel = nil
 	}
 	if d.current.d != nil {
-		if debug {
+		if debugDecoder {
 			printf("re-adding current decoder %p, decoders: %d", d.current.d, len(d.decoders))
 		}
 		d.decoders <- d.current.d
@@ -238,7 +238,7 @@ func (d *Decoder) drainOutput() {
 	}
 	for v := range d.current.output {
 		if v.d != nil {
-			if debug {
+			if debugDecoder {
 				printf("re-adding decoder %p", v.d)
 			}
 			d.decoders <- v.d
@@ -255,9 +255,6 @@ func (d *Decoder) drainOutput() {
 // The return value n is the number of bytes written.
 // Any error encountered during the write is also returned.
 func (d *Decoder) WriteTo(w io.Writer) (int64, error) {
-	if d.stream == nil {
-		return 0, ErrDecoderNilInput
-	}
 	var n int64
 	for {
 		if len(d.current.b) > 0 {
@@ -297,7 +294,7 @@ func (d *Decoder) DecodeAll(input, dst []byte) ([]byte, error) {
 	block := <-d.decoders
 	frame := block.localFrame
 	defer func() {
-		if debug {
+		if debugDecoder {
 			printf("re-adding decoder: %p", block)
 		}
 		frame.rawInput = nil
@@ -310,7 +307,7 @@ func (d *Decoder) DecodeAll(input, dst []byte) ([]byte, error) {
 		frame.history.reset()
 		err := frame.reset(&frame.bBuf)
 		if err == io.EOF {
-			if debug {
+			if debugDecoder {
 				println("frame reset return EOF")
 			}
 			return dst, nil
@@ -355,7 +352,7 @@ func (d *Decoder) DecodeAll(input, dst []byte) ([]byte, error) {
 			return dst, err
 		}
 		if len(frame.bBuf) == 0 {
-			if debug {
+			if debugDecoder {
 				println("frame dbuf empty")
 			}
 			break
@@ -371,7 +368,7 @@ func (d *Decoder) DecodeAll(input, dst []byte) ([]byte, error) {
 // if no data was available without blocking.
 func (d *Decoder) nextBlock(blocking bool) (ok bool) {
 	if d.current.d != nil {
-		if debug {
+		if debugDecoder {
 			printf("re-adding current decoder %p", d.current.d)
 		}
 		d.decoders <- d.current.d
@@ -391,7 +388,7 @@ func (d *Decoder) nextBlock(blocking bool) (ok bool) {
 			return false
 		}
 	}
-	if debug {
+	if debugDecoder {
 		println("got", len(d.current.b), "bytes, error:", d.current.err)
 	}
 	return true
@@ -485,7 +482,7 @@ func (d *Decoder) startStreamDecoder(inStream chan decodeStream) {
 	defer d.streamWg.Done()
 	frame := newFrameDec(d.o)
 	for stream := range inStream {
-		if debug {
+		if debugDecoder {
 			println("got new stream")
 		}
 		br := readerWrapper{r: stream.r}
@@ -493,7 +490,7 @@ func (d *Decoder) startStreamDecoder(inStream chan decodeStream) {
 		for {
 			frame.history.reset()
 			err := frame.reset(&br)
-			if debug && err != nil {
+			if debugDecoder && err != nil {
 				println("Frame decoder returned", err)
 			}
 			if err == nil && frame.DictionaryID != nil {
@@ -510,7 +507,7 @@ func (d *Decoder) startStreamDecoder(inStream chan decodeStream) {
 				}
 				break
 			}
-			if debug {
+			if debugDecoder {
 				println("starting frame decoder")
 			}
 

vendor/github.com/klauspost/compress/zstd/dict.go

@@ -82,7 +82,7 @@ func loadDict(b []byte) (*dict, error) {
 			println("Transform table error:", err)
 			return err
 		}
-		if debug {
+		if debugDecoder || debugEncoder {
 			println("Read table ok", "symbolLen:", dec.symbolLen)
 		}
 		// Set decoders as predefined so they aren't reused.

vendor/github.com/klauspost/compress/zstd/enc_best.go

@@ -132,7 +132,7 @@ func (e *bestFastEncoder) Encode(blk *blockEnc, src []byte) {
 	}
 	_ = addLiterals
 
-	if debug {
+	if debugEncoder {
 		println("recent offsets:", blk.recentOffsets)
 	}
 
@@ -274,7 +274,7 @@ encodeLoop:
 
 			nextEmit = s
 			if s >= sLimit {
-				if debug {
+				if debugEncoder {
 					println("repeat ended", s, best.length)
 
 				}
@@ -412,7 +412,7 @@ encodeLoop:
 	blk.recentOffsets[0] = uint32(offset1)
 	blk.recentOffsets[1] = uint32(offset2)
 	blk.recentOffsets[2] = uint32(offset3)
-	if debug {
+	if debugEncoder {
 		println("returning, recent offsets:", blk.recentOffsets, "extra literals:", blk.extraLits)
 	}
 }

vendor/github.com/klauspost/compress/zstd/enc_better.go

@@ -138,7 +138,7 @@ func (e *betterFastEncoder) Encode(blk *blockEnc, src []byte) {
 		blk.literals = append(blk.literals, src[nextEmit:until]...)
 		s.litLen = uint32(until - nextEmit)
 	}
-	if debug {
+	if debugEncoder {
 		println("recent offsets:", blk.recentOffsets)
 	}
 
@@ -204,7 +204,7 @@ encodeLoop:
 
 					nextEmit = s
 					if s >= sLimit {
-						if debug {
+						if debugEncoder {
 							println("repeat ended", s, lenght)
 
 						}
@@ -264,7 +264,7 @@ encodeLoop:
 					s += lenght + repOff2
 					nextEmit = s
 					if s >= sLimit {
-						if debug {
+						if debugEncoder {
 							println("repeat ended", s, lenght)
 
 						}
@@ -553,7 +553,7 @@ encodeLoop:
 	}
 	blk.recentOffsets[0] = uint32(offset1)
 	blk.recentOffsets[1] = uint32(offset2)
-	if debug {
+	if debugEncoder {
 		println("returning, recent offsets:", blk.recentOffsets, "extra literals:", blk.extraLits)
 	}
 }
@@ -656,7 +656,7 @@ func (e *betterFastEncoderDict) Encode(blk *blockEnc, src []byte) {
 		blk.literals = append(blk.literals, src[nextEmit:until]...)
 		s.litLen = uint32(until - nextEmit)
 	}
-	if debug {
+	if debugEncoder {
 		println("recent offsets:", blk.recentOffsets)
 	}
 
@@ -724,7 +724,7 @@ encodeLoop:
 
 					nextEmit = s
 					if s >= sLimit {
-						if debug {
+						if debugEncoder {
 							println("repeat ended", s, lenght)
 
 						}
@@ -787,7 +787,7 @@ encodeLoop:
 					s += lenght + repOff2
 					nextEmit = s
 					if s >= sLimit {
-						if debug {
+						if debugEncoder {
 							println("repeat ended", s, lenght)
 
 						}
@@ -1084,7 +1084,7 @@ encodeLoop:
 	}
 	blk.recentOffsets[0] = uint32(offset1)
 	blk.recentOffsets[1] = uint32(offset2)
-	if debug {
+	if debugEncoder {
 		println("returning, recent offsets:", blk.recentOffsets, "extra literals:", blk.extraLits)
 	}
 }

vendor/github.com/klauspost/compress/zstd/enc_dfast.go

@@ -109,7 +109,7 @@ func (e *doubleFastEncoder) Encode(blk *blockEnc, src []byte) {
 		blk.literals = append(blk.literals, src[nextEmit:until]...)
 		s.litLen = uint32(until - nextEmit)
 	}
-	if debug {
+	if debugEncoder {
 		println("recent offsets:", blk.recentOffsets)
 	}
 
@@ -170,7 +170,7 @@ encodeLoop:
 					s += lenght + repOff
 					nextEmit = s
 					if s >= sLimit {
-						if debug {
+						if debugEncoder {
 							println("repeat ended", s, lenght)
 
 						}
@@ -368,7 +368,7 @@ encodeLoop:
 	}
 	blk.recentOffsets[0] = uint32(offset1)
 	blk.recentOffsets[1] = uint32(offset2)
-	if debug {
+	if debugEncoder {
 		println("returning, recent offsets:", blk.recentOffsets, "extra literals:", blk.extraLits)
 	}
 }
@@ -427,7 +427,7 @@ func (e *doubleFastEncoder) EncodeNoHist(blk *blockEnc, src []byte) {
 		blk.literals = append(blk.literals, src[nextEmit:until]...)
 		s.litLen = uint32(until - nextEmit)
 	}
-	if debug {
+	if debugEncoder {
 		println("recent offsets:", blk.recentOffsets)
 	}
 
@@ -483,7 +483,7 @@ encodeLoop:
 					s += length + repOff
 					nextEmit = s
 					if s >= sLimit {
-						if debug {
+						if debugEncoder {
 							println("repeat ended", s, length)
 
 						}
@@ -677,7 +677,7 @@ encodeLoop:
 		blk.literals = append(blk.literals, src[nextEmit:]...)
 		blk.extraLits = len(src) - int(nextEmit)
 	}
-	if debug {
+	if debugEncoder {
 		println("returning, recent offsets:", blk.recentOffsets, "extra literals:", blk.extraLits)
 	}
 
@@ -767,7 +767,7 @@ func (e *doubleFastEncoderDict) Encode(blk *blockEnc, src []byte) {
 		blk.literals = append(blk.literals, src[nextEmit:until]...)
 		s.litLen = uint32(until - nextEmit)
 	}
-	if debug {
+	if debugEncoder {
 		println("recent offsets:", blk.recentOffsets)
 	}
 
@@ -830,7 +830,7 @@ encodeLoop:
 					s += lenght + repOff
 					nextEmit = s
 					if s >= sLimit {
-						if debug {
+						if debugEncoder {
 							println("repeat ended", s, lenght)
 
 						}
@@ -1039,7 +1039,7 @@ encodeLoop:
 	}
 	blk.recentOffsets[0] = uint32(offset1)
 	blk.recentOffsets[1] = uint32(offset2)
-	if debug {
+	if debugEncoder {
 		println("returning, recent offsets:", blk.recentOffsets, "extra literals:", blk.extraLits)
 	}
 	// If we encoded more than 64K mark all dirty.

vendor/github.com/klauspost/compress/zstd/enc_fast.go

@@ -103,7 +103,7 @@ func (e *fastEncoder) Encode(blk *blockEnc, src []byte) {
 		blk.literals = append(blk.literals, src[nextEmit:until]...)
 		s.litLen = uint32(until - nextEmit)
 	}
-	if debug {
+	if debugEncoder {
 		println("recent offsets:", blk.recentOffsets)
 	}
 
@@ -178,7 +178,7 @@ encodeLoop:
 				s += length + 2
 				nextEmit = s
 				if s >= sLimit {
-					if debug {
+					if debugEncoder {
 						println("repeat ended", s, length)
 
 					}
@@ -330,7 +330,7 @@ encodeLoop:
 	}
 	blk.recentOffsets[0] = uint32(offset1)
 	blk.recentOffsets[1] = uint32(offset2)
-	if debug {
+	if debugEncoder {
 		println("returning, recent offsets:", blk.recentOffsets, "extra literals:", blk.extraLits)
 	}
 }
@@ -343,7 +343,7 @@ func (e *fastEncoder) EncodeNoHist(blk *blockEnc, src []byte) {
 		inputMargin            = 8
 		minNonLiteralBlockSize = 1 + 1 + inputMargin
 	)
-	if debug {
+	if debugEncoder {
 		if len(src) > maxBlockSize {
 			panic("src too big")
 		}
@@ -391,7 +391,7 @@ func (e *fastEncoder) EncodeNoHist(blk *blockEnc, src []byte) {
 		blk.literals = append(blk.literals, src[nextEmit:until]...)
 		s.litLen = uint32(until - nextEmit)
 	}
-	if debug {
+	if debugEncoder {
 		println("recent offsets:", blk.recentOffsets)
 	}
 
@@ -462,7 +462,7 @@ encodeLoop:
 				s += length + 2
 				nextEmit = s
 				if s >= sLimit {
-					if debug {
+					if debugEncoder {
 						println("repeat ended", s, length)
 
 					}
@@ -616,7 +616,7 @@ encodeLoop:
 		blk.literals = append(blk.literals, src[nextEmit:]...)
 		blk.extraLits = len(src) - int(nextEmit)
 	}
-	if debug {
+	if debugEncoder {
 		println("returning, recent offsets:", blk.recentOffsets, "extra literals:", blk.extraLits)
 	}
 	// We do not store history, so we must offset e.cur to avoid false matches for next user.
@@ -696,7 +696,7 @@ func (e *fastEncoderDict) Encode(blk *blockEnc, src []byte) {
 		blk.literals = append(blk.literals, src[nextEmit:until]...)
 		s.litLen = uint32(until - nextEmit)
 	}
-	if debug {
+	if debugEncoder {
 		println("recent offsets:", blk.recentOffsets)
 	}
 
@@ -773,7 +773,7 @@ encodeLoop:
 				s += length + 2
 				nextEmit = s
 				if s >= sLimit {
-					if debug {
+					if debugEncoder {
 						println("repeat ended", s, length)
 
 					}
@@ -926,7 +926,7 @@ encodeLoop:
 	}
 	blk.recentOffsets[0] = uint32(offset1)
 	blk.recentOffsets[1] = uint32(offset2)
-	if debug {
+	if debugEncoder {
 		println("returning, recent offsets:", blk.recentOffsets, "extra literals:", blk.extraLits)
 	}
 }

vendor/github.com/klauspost/compress/zstd/encoder.go

@@ -245,7 +245,7 @@ func (e *Encoder) nextBlock(final bool) error {
 	s.filling, s.current, s.previous = s.previous[:0], s.filling, s.current
 	s.wg.Add(1)
 	go func(src []byte) {
-		if debug {
+		if debugEncoder {
 			println("Adding block,", len(src), "bytes, final:", final)
 		}
 		defer func() {
@@ -290,7 +290,7 @@ func (e *Encoder) nextBlock(final bool) error {
 			}
 			switch err {
 			case errIncompressible:
-				if debug {
+				if debugEncoder {
 					println("Storing incompressible block as raw")
 				}
 				blk.encodeRaw(src)
@@ -313,7 +313,7 @@ func (e *Encoder) nextBlock(final bool) error {
 //
 // The Copy function uses ReaderFrom if available.
 func (e *Encoder) ReadFrom(r io.Reader) (n int64, err error) {
-	if debug {
+	if debugEncoder {
 		println("Using ReadFrom")
 	}
 
@@ -336,20 +336,20 @@ func (e *Encoder) ReadFrom(r io.Reader) (n int64, err error) {
 		switch err {
 		case io.EOF:
 			e.state.filling = e.state.filling[:len(e.state.filling)-len(src)]
-			if debug {
+			if debugEncoder {
 				println("ReadFrom: got EOF final block:", len(e.state.filling))
 			}
 			return n, nil
 		case nil:
 		default:
-			if debug {
+			if debugEncoder {
 				println("ReadFrom: got error:", err)
 			}
 			e.state.err = err
 			return n, err
 		}
 		if len(src) > 0 {
-			if debug {
+			if debugEncoder {
 				println("ReadFrom: got space left in source:", len(src))
 			}
 			continue
@@ -512,7 +512,7 @@ func (e *Encoder) EncodeAll(src, dst []byte) []byte {
 
 		switch err {
 		case errIncompressible:
-			if debug {
+			if debugEncoder {
 				println("Storing incompressible block as raw")
 			}
 			dst = blk.encodeRawTo(dst, src)
@@ -548,7 +548,7 @@ func (e *Encoder) EncodeAll(src, dst []byte) []byte {
 
 			switch err {
 			case errIncompressible:
-				if debug {
+				if debugEncoder {
 					println("Storing incompressible block as raw")
 				}
 				dst = blk.encodeRawTo(dst, todo)

vendor/github.com/klauspost/compress/zstd/framedec.go

@@ -78,20 +78,33 @@ func newFrameDec(o decoderOptions) *frameDec {
 func (d *frameDec) reset(br byteBuffer) error {
 	d.HasCheckSum = false
 	d.WindowSize = 0
-	var b []byte
+	var signature [4]byte
 	for {
 		var err error
-		b, err = br.readSmall(4)
+		// Check if we can read more...
+		b, err := br.readSmall(1)
 		switch err {
 		case io.EOF, io.ErrUnexpectedEOF:
 			return io.EOF
 		default:
 			return err
 		case nil:
+			signature[0] = b[0]
 		}
-		if !bytes.Equal(b[1:4], skippableFrameMagic) || b[0]&0xf0 != 0x50 {
-			if debug {
-				println("Not skippable", hex.EncodeToString(b), hex.EncodeToString(skippableFrameMagic))
+		// Read the rest, don't allow io.ErrUnexpectedEOF
+		b, err = br.readSmall(3)
+		switch err {
+		case io.EOF:
+			return io.EOF
+		default:
+			return err
+		case nil:
+			copy(signature[1:], b)
+		}
+
+		if !bytes.Equal(signature[1:4], skippableFrameMagic) || signature[0]&0xf0 != 0x50 {
+			if debugDecoder {
+				println("Not skippable", hex.EncodeToString(signature[:]), hex.EncodeToString(skippableFrameMagic))
 			}
 			// Break if not skippable frame.
 			break
@@ -99,28 +112,34 @@ func (d *frameDec) reset(br byteBuffer) error {
 		// Read size to skip
 		b, err = br.readSmall(4)
 		if err != nil {
-			println("Reading Frame Size", err)
+			if debugDecoder {
+				println("Reading Frame Size", err)
+			}
 			return err
 		}
 		n := uint32(b[0]) | (uint32(b[1]) << 8) | (uint32(b[2]) << 16) | (uint32(b[3]) << 24)
 		println("Skipping frame with", n, "bytes.")
 		err = br.skipN(int(n))
 		if err != nil {
-			if debug {
+			if debugDecoder {
 				println("Reading discarded frame", err)
 			}
 			return err
 		}
 	}
-	if !bytes.Equal(b, frameMagic) {
-		println("Got magic numbers: ", b, "want:", frameMagic)
+	if !bytes.Equal(signature[:], frameMagic) {
+		if debugDecoder {
+			println("Got magic numbers: ", signature, "want:", frameMagic)
+		}
 		return ErrMagicMismatch
 	}
 
 	// Read Frame_Header_Descriptor
 	fhd, err := br.readByte()
 	if err != nil {
-		println("Reading Frame_Header_Descriptor", err)
+		if debugDecoder {
+			println("Reading Frame_Header_Descriptor", err)
+		}
 		return err
 	}
 	d.SingleSegment = fhd&(1<<5) != 0
@@ -135,7 +154,9 @@ func (d *frameDec) reset(br byteBuffer) error {
 	if !d.SingleSegment {
 		wd, err := br.readByte()
 		if err != nil {
-			println("Reading Window_Descriptor", err)
+			if debugDecoder {
+				println("Reading Window_Descriptor", err)
+			}
 			return err
 		}
 		printf("raw: %x, mantissa: %d, exponent: %d\n", wd, wd&7, wd>>3)
@@ -153,7 +174,7 @@ func (d *frameDec) reset(br byteBuffer) error {
 			size = 4
 		}
 
-		b, err = br.readSmall(int(size))
+		b, err := br.readSmall(int(size))
 		if err != nil {
 			println("Reading Dictionary_ID", err)
 			return err
@@ -167,7 +188,7 @@ func (d *frameDec) reset(br byteBuffer) error {
 		case 4:
 			id = uint32(b[0]) | (uint32(b[1]) << 8) | (uint32(b[2]) << 16) | (uint32(b[3]) << 24)
 		}
-		if debug {
+		if debugDecoder {
 			println("Dict size", size, "ID:", id)
 		}
 		if id > 0 {
@@ -191,7 +212,7 @@ func (d *frameDec) reset(br byteBuffer) error {
 	}
 	d.FrameContentSize = 0
 	if fcsSize > 0 {
-		b, err = br.readSmall(fcsSize)
+		b, err := br.readSmall(fcsSize)
 		if err != nil {
 			println("Reading Frame content", err)
 			return err
@@ -209,7 +230,7 @@ func (d *frameDec) reset(br byteBuffer) error {
 			d2 := uint32(b[4]) | (uint32(b[5]) << 8) | (uint32(b[6]) << 16) | (uint32(b[7]) << 24)
 			d.FrameContentSize = uint64(d1) | (uint64(d2) << 32)
 		}
-		if debug {
+		if debugDecoder {
 			println("field size bits:", v, "fcsSize:", fcsSize, "FrameContentSize:", d.FrameContentSize, hex.EncodeToString(b[:fcsSize]), "singleseg:", d.SingleSegment, "window:", d.WindowSize)
 		}
 	}
@@ -252,7 +273,7 @@ func (d *frameDec) reset(br byteBuffer) error {
 
 // next will start decoding the next block from stream.
 func (d *frameDec) next(block *blockDec) error {
-	if debug {
+	if debugDecoder {
 		printf("decoding new block %p:%p", block, block.data)
 	}
 	err := block.reset(d.rawInput, d.WindowSize)
@@ -263,7 +284,7 @@ func (d *frameDec) next(block *blockDec) error {
 		return err
 	}
 	block.input <- struct{}{}
-	if debug {
+	if debugDecoder {
 		println("next block:", block)
 	}
 	d.asyncRunningMu.Lock()
@@ -318,12 +339,12 @@ func (d *frameDec) checkCRC() error {
 	}
 
 	if !bytes.Equal(tmp[:], want) {
-		if debug {
+		if debugDecoder {
 			println("CRC Check Failed:", tmp[:], "!=", want)
 		}
 		return ErrCRCMismatch
 	}
-	if debug {
+	if debugDecoder {
 		println("CRC ok", tmp[:])
 	}
 	return nil
@@ -344,7 +365,7 @@ func (d *frameDec) initAsync() {
 	if cap(d.decoding) < d.o.concurrent {
 		d.decoding = make(chan *blockDec, d.o.concurrent)
 	}
-	if debug {
+	if debugDecoder {
 		h := d.history
 		printf("history init. len: %d, cap: %d", len(h.b), cap(h.b))
 	}
@@ -392,7 +413,7 @@ func (d *frameDec) startDecoder(output chan decodeOutput) {
 			output <- r
 			return
 		}
-		if debug {
+		if debugDecoder {
 			println("got result, from ", d.offset, "to", d.offset+int64(len(r.b)))
 			d.offset += int64(len(r.b))
 		}
@@ -400,7 +421,7 @@ func (d *frameDec) startDecoder(output chan decodeOutput) {
 			// Send history to next block
 			select {
 			case next = <-d.decoding:
-				if debug {
+				if debugDecoder {
 					println("Sending ", len(d.history.b), "bytes as history")
 				}
 				next.history <- &d.history
@@ -438,7 +459,7 @@ func (d *frameDec) startDecoder(output chan decodeOutput) {
 		output <- r
 		if next == nil {
 			// There was no decoder available, we wait for one now that we have sent to the writer.
-			if debug {
+			if debugDecoder {
 				println("Sending ", len(d.history.b), " bytes as history")
 			}
 			next = <-d.decoding
@@ -462,7 +483,7 @@ func (d *frameDec) runDecoder(dst []byte, dec *blockDec) ([]byte, error) {
 		if err != nil {
 			break
 		}
-		if debug {
+		if debugDecoder {
 			println("next block:", dec)
 		}
 		err = dec.decodeBuf(&d.history)

vendor/github.com/klauspost/compress/zstd/fse_encoder.go

@@ -229,7 +229,7 @@ func (s *fseEncoder) setRLE(val byte) {
 		deltaFindState: 0,
 		deltaNbBits:    0,
 	}
-	if debug {
+	if debugEncoder {
 		println("setRLE: val", val, "symbolTT", s.ct.symbolTT[val])
 	}
 	s.rleVal = val

vendor/github.com/klauspost/compress/zstd/snappy.go

@@ -203,7 +203,7 @@ func (r *SnappyConverter) Convert(in io.Reader, w io.Writer) (int64, error) {
 			written += int64(n)
 			continue
 		case chunkTypeUncompressedData:
-			if debug {
+			if debugEncoder {
 				println("Uncompressed, chunklen", chunkLen)
 			}
 			// Section 4.3. Uncompressed data (chunk type 0x01).
@@ -246,7 +246,7 @@ func (r *SnappyConverter) Convert(in io.Reader, w io.Writer) (int64, error) {
 			continue
 
 		case chunkTypeStreamIdentifier:
-			if debug {
+			if debugEncoder {
 				println("stream id", chunkLen, len(snappyMagicBody))
 			}
 			// Section 4.1. Stream identifier (chunk type 0xff).

vendor/github.com/klauspost/compress/zstd/zstd.go

@@ -15,6 +15,12 @@ import (
 // enable debug printing
 const debug = false
 
+// enable encoding debug printing
+const debugEncoder = debug
+
+// enable decoding debug printing
+const debugDecoder = debug
+
 // Enable extra assertions.
 const debugAsserts = debug || false
 
@@ -82,13 +88,13 @@ var (
 )
 
 func println(a ...interface{}) {
-	if debug {
+	if debug || debugDecoder || debugEncoder {
 		log.Println(a...)
 	}
 }
 
 func printf(format string, a ...interface{}) {
-	if debug {
+	if debug || debugDecoder || debugEncoder {
 		log.Printf(format, a...)
 	}
 }