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compress/flate: use correct table for size estimation

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The incorrect table was used for estimating output size.
This can give suboptimal selection of entropy encoder in rare cases.

Change-Id: I8b358200f2d1f9a3f9b79a44269d7be704e1d2d9
Reviewed-on: https://go-review.googlesource.com/31172
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Klaus Post 2016-10-15 13:06:22 +02:00 committed by Nigel Tao
parent 05471e9ee6
commit c1cd64d0ac
1 changed files with 1 additions and 1 deletions
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2
src/compress/flate/huffman_bit_writer.go
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@ -520,7 +520,7 @@ func (w *huffmanBitWriter) writeBlockDynamic(tokens []token, eof bool, input []b
// the literalEncoding and the offsetEncoding.
w.generateCodegen(numLiterals, numOffsets, w.literalEncoding, w.offsetEncoding)
w.codegenEncoding.generate(w.codegenFreq[:], 7)
size, numCodegens := w.dynamicSize(w.literalEncoding, huffOffset, 0)
size, numCodegens := w.dynamicSize(w.literalEncoding, w.offsetEncoding, 0)
// Store bytes, if we don't get a reasonable improvement.
if ssize, storable := w.storedSize(input); storable && ssize < (size+size>>4) {