diff options
| -rw-r--r-- | src/liblzma/common/alone_decoder.c | 29 |
1 files changed, 14 insertions, 15 deletions
diff --git a/src/liblzma/common/alone_decoder.c b/src/liblzma/common/alone_decoder.c index 32d44311..6845537f 100644 --- a/src/liblzma/common/alone_decoder.c +++ b/src/liblzma/common/alone_decoder.c @@ -104,28 +104,27 @@ alone_decode(lzma_coder *coder, case SEQ_UNCOMPRESSED_SIZE: coder->uncompressed_size |= (lzma_vli)(in[*in_pos]) << (coder->pos * 8); - - if (++coder->pos == 8) { - // Another hack to ditch false positives: Assume that - // if the uncompressed size is known, it must be less - // than 256 GiB. Again, if someone complains, this - // will be reconsidered. - if (coder->uncompressed_size != LZMA_VLI_UNKNOWN - && coder->uncompressed_size - >= (LZMA_VLI_C(1) << 38)) - return LZMA_FORMAT_ERROR; - - coder->pos = 0; - coder->sequence = SEQ_CODER_INIT; - } - ++*in_pos; + if (++coder->pos < 8) + break; + + // Another hack to ditch false positives: Assume that + // if the uncompressed size is known, it must be less + // than 256 GiB. Again, if someone complains, this + // will be reconsidered. + if (coder->uncompressed_size != LZMA_VLI_UNKNOWN + && coder->uncompressed_size + >= (LZMA_VLI_C(1) << 38)) + return LZMA_FORMAT_ERROR; // Calculate the memory usage so that it is ready // for SEQ_CODER_INIT. coder->memusage = lzma_lzma_decoder_memusage(&coder->options) + LZMA_MEMUSAGE_BASE; + coder->pos = 0; + coder->sequence = SEQ_CODER_INIT; + // Fall through case SEQ_CODER_INIT: { |