From 3fec9b8bba162fcedca41f9acece797dced1a3dd Mon Sep 17 00:00:00 2001
From: Alexander Shopov <alshopov@users.noreply.github.com>
Date: Thu, 25 Jul 2019 21:05:48 +0200
Subject: [PATCH] Try to eliminate dead stores (#444)

Signed-off-by: Alexander Shopov <ash@kambanaria.org>
original commit: 84a6a6ab36294c73dbdc617d19c42fada42c3a15
---
 LOG             | 2 ++
 c/compress-io.c | 2 +-
 c/new-io.c      | 2 --
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/LOG b/LOG
index 524bc7d48a..1e340c71b6 100644
--- a/LOG
+++ b/LOG
@@ -1389,3 +1389,5 @@
     expeditor.c
 - prevent access before start of array
     scheme.c
+- remove dead stores in files
+    compress-io.c, new-io.c
diff --git a/c/compress-io.c b/c/compress-io.c
index 376cd03876..960dfb85b5 100644
--- a/c/compress-io.c
+++ b/c/compress-io.c
@@ -329,7 +329,7 @@ INT S_glzclose(glzFile glz) {
 #ifdef EINTR
           if (r < 0 && errno == EINTR) continue;
 #endif
-	  if (r == 0) { r = Z_ERRNO; saved_errno = errno; }
+	  if (r == 0) { saved_errno = errno; }
           break;
         }
         (void)LZ4F_freeDecompressionContext(lz4->dctx);
diff --git a/c/new-io.c b/c/new-io.c
index 2a896c19eb..74ed098b1f 100644
--- a/c/new-io.c
+++ b/c/new-io.c
@@ -842,8 +842,6 @@ ptr S_bytevector_compress(ptr dest_bv, iptr d_start, iptr d_count,
         if (!is_valid_lz4_length(s_count))
           return Sstring("source bytevector ~s is too large");
 
-        destLen = (int)d_count;
-
         destLen = LZ4_compress_default((char *)&BVIT(src_bv, s_start), (char *)&BVIT(dest_bv, d_start), (int)s_count, (int)d_count);
 
         if (destLen > 0)