diff options
Diffstat (limited to 'vendor/github.com/klauspost/compress/huff0/huff0.go')
| -rw-r--r-- | vendor/github.com/klauspost/compress/huff0/huff0.go | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/vendor/github.com/klauspost/compress/huff0/huff0.go b/vendor/github.com/klauspost/compress/huff0/huff0.go index 6bc23bbf0..53249df05 100644 --- a/vendor/github.com/klauspost/compress/huff0/huff0.go +++ b/vendor/github.com/klauspost/compress/huff0/huff0.go @@ -83,7 +83,7 @@ type Scratch struct { MaxSymbolValue uint8 // TableLog will attempt to override the tablelog for the next block. - // Must be <= 11. + // Must be <= 11 and >= 5. TableLog uint8 // Reuse will specify the reuse policy @@ -105,6 +105,7 @@ type Scratch struct { maxCount int // count of the most probable symbol clearCount bool // clear count actualTableLog uint8 // Selected tablelog. + prevTableLog uint8 // Tablelog for previous table prevTable cTable // Table used for previous compression. cTable cTable // compression table dt dTable // decompression table @@ -127,8 +128,8 @@ func (s *Scratch) prepare(in []byte) (*Scratch, error) { if s.TableLog == 0 { s.TableLog = tableLogDefault } - if s.TableLog > tableLogMax { - return nil, fmt.Errorf("tableLog (%d) > maxTableLog (%d)", s.TableLog, tableLogMax) + if s.TableLog > tableLogMax || s.TableLog < minTablelog { + return nil, fmt.Errorf(" invalid tableLog %d (%d -> %d)", s.TableLog, minTablelog, tableLogMax) } if s.MaxDecodedSize <= 0 || s.MaxDecodedSize > BlockSizeMax { s.MaxDecodedSize = BlockSizeMax |