From 86f7dbc4cb8bf8f9abbd6a4721bc748d000d2eb4 Mon Sep 17 00:00:00 2001
From: "dependabot-preview[bot]"
 <27856297+dependabot-preview[bot]@users.noreply.github.com>
Date: Tue, 5 May 2020 08:57:55 +0000
Subject: Bump github.com/containers/storage from 1.19.0 to 1.19.1

Bumps [github.com/containers/storage](https://github.com/containers/storage) from 1.19.0 to 1.19.1.
- [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/v1.19.0...v1.19.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
---
 vendor/github.com/klauspost/compress/zstd/blockdec.go | 19 +++++++++++++++----
 vendor/github.com/klauspost/compress/zstd/framedec.go | 10 +++++++---
 2 files changed, 22 insertions(+), 7 deletions(-)

(limited to 'vendor/github.com/klauspost/compress/zstd')

diff --git a/vendor/github.com/klauspost/compress/zstd/blockdec.go b/vendor/github.com/klauspost/compress/zstd/blockdec.go
index 63062ffa6..c2f855e75 100644
--- a/vendor/github.com/klauspost/compress/zstd/blockdec.go
+++ b/vendor/github.com/klauspost/compress/zstd/blockdec.go
@@ -131,17 +131,25 @@ func (b *blockDec) reset(br byteBuffer, windowSize uint64) error {
 	b.Type = blockType((bh >> 1) & 3)
 	// find size.
 	cSize := int(bh >> 3)
+	maxSize := maxBlockSize
 	switch b.Type {
 	case blockTypeReserved:
 		return ErrReservedBlockType
 	case blockTypeRLE:
 		b.RLESize = uint32(cSize)
+		if b.lowMem {
+			maxSize = cSize
+		}
 		cSize = 1
 	case blockTypeCompressed:
 		if debug {
 			println("Data size on stream:", cSize)
 		}
 		b.RLESize = 0
+		maxSize = maxCompressedBlockSize
+		if windowSize < maxCompressedBlockSize && b.lowMem {
+			maxSize = int(windowSize)
+		}
 		if cSize > maxCompressedBlockSize || uint64(cSize) > b.WindowSize {
 			if debug {
 				printf("compressed block too big: csize:%d block: %+v\n", uint64(cSize), b)
@@ -160,8 +168,8 @@ func (b *blockDec) reset(br byteBuffer, windowSize uint64) error {
 			b.dataStorage = make([]byte, 0, maxBlockSize)
 		}
 	}
-	if cap(b.dst) <= maxBlockSize {
-		b.dst = make([]byte, 0, maxBlockSize+1)
+	if cap(b.dst) <= maxSize {
+		b.dst = make([]byte, 0, maxSize+1)
 	}
 	var err error
 	b.data, err = br.readBig(cSize, b.dataStorage)
@@ -679,8 +687,11 @@ func (b *blockDec) decodeCompressed(hist *history) error {
 		println("initializing sequences:", err)
 		return err
 	}
-
-	err = seqs.decode(nSeqs, br, hist.b)
+	hbytes := hist.b
+	if len(hbytes) > hist.windowSize {
+		hbytes = hbytes[len(hbytes)-hist.windowSize:]
+	}
+	err = seqs.decode(nSeqs, br, hbytes)
 	if err != nil {
 		return err
 	}
diff --git a/vendor/github.com/klauspost/compress/zstd/framedec.go b/vendor/github.com/klauspost/compress/zstd/framedec.go
index e38f34a9b..780880ebe 100644
--- a/vendor/github.com/klauspost/compress/zstd/framedec.go
+++ b/vendor/github.com/klauspost/compress/zstd/framedec.go
@@ -233,7 +233,11 @@ func (d *frameDec) reset(br byteBuffer) error {
 		return ErrWindowSizeTooSmall
 	}
 	d.history.windowSize = int(d.WindowSize)
-	d.history.maxSize = d.history.windowSize + maxBlockSize
+	if d.o.lowMem && d.history.windowSize < maxBlockSize {
+		d.history.maxSize = d.history.windowSize * 2
+	} else {
+		d.history.maxSize = d.history.windowSize + maxBlockSize
+	}
 	// history contains input - maybe we do something
 	d.rawInput = br
 	return nil
@@ -320,8 +324,8 @@ func (d *frameDec) checkCRC() error {
 
 func (d *frameDec) initAsync() {
 	if !d.o.lowMem && !d.SingleSegment {
-		// set max extra size history to 20MB.
-		d.history.maxSize = d.history.windowSize + maxBlockSize*10
+		// set max extra size history to 10MB.
+		d.history.maxSize = d.history.windowSize + maxBlockSize*5
 	}
 	// re-alloc if more than one extra block size.
 	if d.o.lowMem && cap(d.history.b) > d.history.maxSize+maxBlockSize {
-- 
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