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zstd: Trigger BCE by switching on lengths #716

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merged 2 commits into from
Dec 19, 2022
Merged

zstd: Trigger BCE by switching on lengths #716

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5c43571
zstd: Trigger BCE by switching on lengths
greatroar Dec 18, 2022
73ebf80
Merge branch 'master' into zstd-bce
klauspost Dec 19, 2022
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4 changes: 2 additions & 2 deletions zstd/decodeheader.go
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Original file line number Diff line number Diff line change
Expand Up @@ -152,7 +152,7 @@ func (h *Header) Decode(in []byte) error {
}
b, in = in[:size], in[size:]
h.HeaderSize += int(size)
switch size {
switch len(b) {
case 1:
h.DictionaryID = uint32(b[0])
case 2:
Expand Down Expand Up @@ -182,7 +182,7 @@ func (h *Header) Decode(in []byte) error {
}
b, in = in[:fcsSize], in[fcsSize:]
h.HeaderSize += int(fcsSize)
switch fcsSize {
switch len(b) {
case 1:
h.FrameContentSize = uint64(b[0])
case 2:
Expand Down
4 changes: 2 additions & 2 deletions zstd/framedec.go
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Original file line number Diff line number Diff line change
Expand Up @@ -167,7 +167,7 @@ func (d *frameDec) reset(br byteBuffer) error {
return err
}
var id uint32
switch size {
switch len(b) {
case 1:
id = uint32(b[0])
case 2:
Expand Down Expand Up @@ -204,7 +204,7 @@ func (d *frameDec) reset(br byteBuffer) error {
println("Reading Frame content", err)
return err
}
switch fcsSize {
switch len(b) {
case 1:
d.FrameContentSize = uint64(b[0])
case 2:
Expand Down