19 lines
681 B
Diff
19 lines
681 B
Diff
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From upstream: https://busybox.net/downloads/fixes-1.25.0/
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Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
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--- busybox-1.25.0/archival/gzip.c
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+++ busybox-1.25.0-gzip/archival/gzip.c
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@@ -2220,10 +2220,7 @@ int gzip_main(int argc UNUSED_PARAM, cha
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opt >>= ENABLE_GUNZIP ? 7 : 5; /* drop cfv[dt]qn bits */
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if (opt == 0)
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opt = 1 << 6; /* default: 6 */
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- /* Map 1..3 to 4 */
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- if (opt & 0x7)
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- opt |= 1 << 4;
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- opt = ffs(opt >> 3);
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+ opt = ffs(opt >> 4); /* Maps -1..-4 to [0], -5 to [1] ... -9 to [5] */
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max_chain_length = 1 << gzip_level_config[opt].chain_shift;
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good_match = gzip_level_config[opt].good;
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max_lazy_match = gzip_level_config[opt].lazy2 * 2;
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