From 949a274817085cb0117430056c5b22ec8f051878 Mon Sep 17 00:00:00 2001
From: sunhe <sunheehnus@gmail.com>
Date: Sat, 22 Oct 2016 01:54:46 +0800
Subject: [PATCH] bitops.c/bitfieldCommand: update higest_write_offset with
 check

---
 src/bitops.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/bitops.c b/src/bitops.c
index 302e811d2..46eee22c3 100644
--- a/src/bitops.c
+++ b/src/bitops.c
@@ -907,7 +907,7 @@ void bitfieldCommand(client *c) {
     struct bitfieldOp *ops = NULL; /* Array of ops to execute at end. */
     int owtype = BFOVERFLOW_WRAP; /* Overflow type. */
     int readonly = 1;
-    long higest_write_offset = 0;
+    size_t higest_write_offset = 0;
 
     for (j = 2; j < c->argc; j++) {
         int remargs = c->argc-j-1; /* Remaining args other than current. */
@@ -957,7 +957,8 @@ void bitfieldCommand(client *c) {
 
         if (opcode != BITFIELDOP_GET) {
             readonly = 0;
-            higest_write_offset = bitoffset + bits - 1;
+            if (higest_write_offset < bitoffset + bits - 1)
+                higest_write_offset = bitoffset + bits - 1;
             /* INCRBY and SET require another argument. */
             if (getLongLongFromObjectOrReply(c,c->argv[j+3],&i64,NULL) != C_OK){
                 zfree(ops);