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gzip: default level with ENABLE_FEATURE_GZIP_LEVELS should be 6

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Fixes an off-by-one that actually resulted in level 7 being used

Signed-off-by: Daniel Edgecumbe <git@esotericnonsense.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Daniel Edgecumbe 2019-09-02 22:03:14 +01:00 committed by Denys Vlasenko
parent 10509a70ee
commit de82f0b764
1 changed files with 1 additions and 1 deletions
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archival/gzip.c
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@ -2222,7 +2222,7 @@ int gzip_main(int argc UNUSED_PARAM, char **argv)
#if ENABLE_FEATURE_GZIP_LEVELS
opt >>= (BBUNPK_OPTSTRLEN IF_FEATURE_GZIP_DECOMPRESS(+ 2) + 1); /* drop cfkvq[dt]n bits */
if (opt == 0)
opt = 1 << 6; /* default: 6 */
opt = 1 << 5; /* default: 6 */
opt = ffs(opt >> 4); /* Maps -1..-4 to [0], -5 to [1] ... -9 to [5] */
max_chain_length = 1 << gzip_level_config[opt].chain_shift;
good_match = gzip_level_config[opt].good;