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| author | Lasse Collin <lasse.collin@tukaani.org> | 2021-01-14 20:57:11 +0200 |
|---|---|---|
| committer | Lasse Collin <lasse.collin@tukaani.org> | 2021-01-14 20:57:11 +0200 |
| commit | 421b0aa352da244075db10205cf33712f91b9835 (patch) | |
| tree | d2d159edec80d5eff0be9140b5fb3b00e7e41994 /src | |
| parent | liblzma: Add EROFS LZMA encoder and decoder. (diff) | |
| download | xz-421b0aa352da244075db10205cf33712f91b9835.tar.xz | |
liblzma: Fix missing normalization in rc_encode_dummy().
Without this fix it could attempt to create too much output.
Diffstat (limited to 'src')
| -rw-r--r-- | src/liblzma/rangecoder/range_encoder.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/liblzma/rangecoder/range_encoder.h b/src/liblzma/rangecoder/range_encoder.h index 1bcfd7a5..5e2afafe 100644 --- a/src/liblzma/rangecoder/range_encoder.h +++ b/src/liblzma/rangecoder/range_encoder.h @@ -274,7 +274,7 @@ rc_encode_dummy(const lzma_range_encoder *rc, size_t out_size) size_t pos = rc->pos; - while (pos < rc->count) { + while (true) { // Normalize if (range < RC_TOP_VALUE) { if (rc_shift_low_dummy(&low, &cache_size, &cache, @@ -284,6 +284,11 @@ rc_encode_dummy(const lzma_range_encoder *rc, size_t out_size) range <<= RC_SHIFT_BITS; } + // This check is here because the normalization above must + // be done before flushing the last bytes. + if (pos == rc->count) + break; + // Encode a bit switch (rc->symbols[pos]) { case RC_BIT_0: { |