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liblzma: Silence harmless Valgrind errors.

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Thanks to Torsten Rupp for reporting this. I had
forgotten to run Valgrind before the 5.2.0 release.
This commit is contained in:
Lasse Collin 2015-01-26 20:39:28 +02:00
parent a9b45badfe
commit fec88d41e6
1 changed files with 6 additions and 0 deletions
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6
src/liblzma/lz/lz_encoder.c
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@ -110,6 +110,12 @@ fill_window(lzma_coder *coder, const lzma_allocator *allocator,
coder->mf.write_pos = write_pos; coder->mf.write_pos = write_pos;
// Silence Valgrind. lzma_memcmplen() can read extra bytes
// and Valgrind will give warnings if those bytes are uninitialized
// because Valgrind cannot see that the values of the uninitialized
// bytes are eventually ignored.
memzero(coder->mf.buffer + write_pos, LZMA_MEMCMPLEN_EXTRA);
// If end of stream has been reached or flushing completed, we allow // If end of stream has been reached or flushing completed, we allow
// the encoder to process all the input (that is, read_pos is allowed // the encoder to process all the input (that is, read_pos is allowed
// to reach write_pos). Otherwise we keep keep_size_after bytes // to reach write_pos). Otherwise we keep keep_size_after bytes