diff options
| -rw-r--r-- | archival/libarchive/decompress_unlzma.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/archival/libarchive/decompress_unlzma.c b/archival/libarchive/decompress_unlzma.c index c8622f97b..90a428583 100644 --- a/archival/libarchive/decompress_unlzma.c +++ b/archival/libarchive/decompress_unlzma.c @@ -278,9 +278,10 @@ unpack_lzma_stream(transformer_state_t *xstate) if (state >= LZMA_NUM_LIT_STATES) { int match_byte; - uint32_t pos = buffer_pos - rep0; + uint32_t pos; - while (pos >= header.dict_size) + pos = buffer_pos - rep0; + if ((int32_t)pos < 0) pos += header.dict_size; match_byte = buffer[pos]; do { @@ -336,9 +337,11 @@ unpack_lzma_stream(transformer_state_t *xstate) ); if (!rc_is_bit_1(rc, prob2)) { #if ENABLE_FEATURE_LZMA_FAST - uint32_t pos = buffer_pos - rep0; + uint32_t pos; state = state < LZMA_NUM_LIT_STATES ? 9 : 11; - while (pos >= header.dict_size) + + pos = buffer_pos - rep0; + if ((int32_t)pos < 0) pos += header.dict_size; previous_byte = buffer[pos]; goto one_byte1; @@ -432,7 +435,7 @@ unpack_lzma_stream(transformer_state_t *xstate) IF_NOT_FEATURE_LZMA_FAST(string:) do { uint32_t pos = buffer_pos - rep0; - while (pos >= header.dict_size) + if ((int32_t)pos < 0) pos += header.dict_size; previous_byte = buffer[pos]; IF_NOT_FEATURE_LZMA_FAST(one_byte2:) |