diff options
Diffstat (limited to 'src/liblzma/lz/lz_decoder.h')
| -rw-r--r-- | src/liblzma/lz/lz_decoder.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/liblzma/lz/lz_decoder.h b/src/liblzma/lz/lz_decoder.h index a8a585cd..1acf9831 100644 --- a/src/liblzma/lz/lz_decoder.h +++ b/src/liblzma/lz/lz_decoder.h @@ -31,6 +31,11 @@ : (lz).dict[(lz).pos - (distance) - 1 + (lz).end]) +/// Test if dictionary is empty. +#define lz_is_empty(lz) \ + ((lz).pos == 0 && !(lz).is_full) + + #define LZMA_LZ_DECODER_INIT \ (lzma_lz_decoder){ .dict = NULL, .size = 0, .match_max_len = 0 } @@ -109,7 +114,6 @@ extern lzma_ret lzma_lz_decoder_reset(lzma_lz_decoder *lz, lzma_coder *restrict coder, const uint8_t *restrict in, size_t *restrict in_pos, size_t in_size, bool has_safe_buffer), - lzma_vli uncompressed_size, size_t history_size, size_t match_max_len); extern lzma_ret lzma_lz_decode(lzma_coder *coder, lzma_allocator *allocator, @@ -155,12 +159,12 @@ lzma_lz_out_repeat(lzma_lz_decoder *lz, size_t distance, size_t length) // in which e.g. the data of the previously decoded file(s) // would be leaked (or whatever happens to be in unused // part of the dictionary buffer). - if (distance >= lz->pos && !lz->is_full) + if (unlikely(distance >= lz->pos && !lz->is_full)) return false; // It also doesn't make sense to copy data farer than // the dictionary size. - if (distance >= lz->requested_size) + if (unlikely(distance >= lz->requested_size)) return false; // The caller must have checked these! |