silence a minor msan warning

2 files changed, 3 insertions, 1 deletions

diff --git a/lib/lz4.c b/lib/lz4.c
index e6b70bc..ff141be 100644
--- a/lib/lz4.c
+++ b/lib/lz4.c
@@ -1168,6 +1168,7 @@ FORCE_INLINE int LZ4_decompress_generic(
         offset = LZ4_readLE16(ip); ip+=2;
         match = op - offset;
         if ((checkOffset) && (unlikely(match < lowLimit))) goto _output_error;   /* Error : offset outside buffers */
+        LZ4_write32(op, offset);   /* costs ~1%; silence an msan warning when offset==0 */
 
         /* get matchlength */
         length = token & ML_MASK;
diff --git a/programs/lz4io.c b/programs/lz4io.c
index 00576c2..5a366a4 100644
--- a/programs/lz4io.c
+++ b/programs/lz4io.c
@@ -824,7 +824,8 @@ static unsigned long long LZ4IO_decompressLZ4F(dRess_t ress, FILE* srcFile, FILE
 
             /* Write Block */
             if (decodedBytes) {
-                if (!g_testMode) storedSkips = LZ4IO_fwriteSparse(dstFile, ress.dstBuffer, decodedBytes, storedSkips);
+                if (!g_testMode)
+                    storedSkips = LZ4IO_fwriteSparse(dstFile, ress.dstBuffer, decodedBytes, storedSkips);
                 filesize += decodedBytes;
                 DISPLAYUPDATE(2, "\rDecompressed : %u MB  ", (unsigned)(filesize>>20));
             }