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| author | Alexey Tourbin <alexey.tourbin@gmail.com> | 2017-04-29 12:52:51 (GMT) |
|---|---|---|
| committer | Alexey Tourbin <alexey.tourbin@gmail.com> | 2017-04-29 13:33:15 (GMT) |
| commit | 6cf1f7d758c23d6033d388eabbbb50380c364d2e (patch) | |
| tree | 45d6f739827a141cb2df0a59380627f5a7d79aa7 | |
| parent | a41df535f709fcb6ccba079dd4d630c4ec4f7151 (diff) | |
| download | lz4-6cf1f7d758c23d6033d388eabbbb50380c364d2e.zip lz4-6cf1f7d758c23d6033d388eabbbb50380c364d2e.tar.gz lz4-6cf1f7d758c23d6033d388eabbbb50380c364d2e.tar.bz2 | |
lz4hc.c: clamp compression levels > 12
I noticed that, while 'lz4 -12' works fine, 'lz4 -13' does not compress
at all.
$ cat </etc/passwd |wc -c
2565
$ lz4 -12 </etc/passwd |wc -c
1456
$ lz4 -13 </etc/passwd |wc -c
2584
Perhaps the best way to fix this is to clamp the compression level
in the LZ4HC_compress_generic routine.
| -rw-r--r-- | lib/lz4hc.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/lz4hc.c b/lib/lz4hc.c index ac15d20..16fe029 100644 --- a/lib/lz4hc.c +++ b/lib/lz4hc.c @@ -555,6 +555,8 @@ static int LZ4HC_compress_generic ( ctx->searchNum = LZ4HC_getSearchNum(cLevel); return LZ4HC_compress_optimal(ctx, src, dst, *srcSizePtr, dstCapacity, limit, 128, 0); default: + cLevel = 12; + /* pass-through */ case 12: ctx->searchNum = LZ4HC_getSearchNum(cLevel); return LZ4HC_compress_optimal(ctx, src, dst, *srcSizePtr, dstCapacity, limit, LZ4_OPT_NUM, 1); |