diff options
Diffstat (limited to 'src/liblzma/lzma/lzma_encoder.c')
| -rw-r--r-- | src/liblzma/lzma/lzma_encoder.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/liblzma/lzma/lzma_encoder.c b/src/liblzma/lzma/lzma_encoder.c index 79bb8f9b..cf7637d2 100644 --- a/src/liblzma/lzma/lzma_encoder.c +++ b/src/liblzma/lzma/lzma_encoder.c @@ -274,6 +274,8 @@ encode_symbol(lzma_coder *coder, lzma_mf *mf, static bool encode_init(lzma_coder *coder, lzma_mf *mf) { + assert(mf_position(mf) == 0); + if (mf->read_pos == mf->read_limit) { if (mf->action == LZMA_RUN) return false; // We cannot do anything. @@ -594,7 +596,12 @@ lzma_lzma_encoder_create(lzma_coder **coder_ptr, lzma_allocator *allocator, return LZMA_OPTIONS_ERROR; } - coder->is_initialized = false; + // We don't need to write the first byte as literal if there is + // a non-empty preset dictionary. encode_init() wouldn't even work + // if there is a non-empty preset dictionary, because encode_init() + // assumes that position is zero and previous byte is also zero. + coder->is_initialized = options->preset_dict != NULL + && options->preset_dict_size > 0; coder->is_flushed = false; set_lz_options(lz_options, options); |