liblzma: Silence harmless Valgrind errors.
Thanks to Torsten Rupp for reporting this. I had
forgotten to run Valgrind before the 5.2.0 release.
diff --git a/src/liblzma/lz/lz_encoder.c b/src/liblzma/lz/lz_encoder.c
index 2033844..01dfc06 100644
--- a/src/liblzma/lz/lz_encoder.c
+++ b/src/liblzma/lz/lz_encoder.c
@@ -110,6 +110,12 @@
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
// the encoder to process all the input (that is, read_pos is allowed
// to reach write_pos). Otherwise we keep keep_size_after bytes
