From adcae42c2094096606a26976fb5829aa1ce5937b Mon Sep 17 00:00:00 2001
From: caodongxia <315816521@qq.com>
Date: Mon, 31 May 2021 16:43:12 +0800
Subject: [PATCH] create patch

---
 libclamav/upx.c             | 6 +++---
 libclammspack/mspack/cabd.c | 2 +-
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/libclamav/upx.c b/libclamav/upx.c
index 4663861..0e7b2c8 100644
--- a/libclamav/upx.c
+++ b/libclamav/upx.c
@@ -333,7 +333,7 @@ int upx_inflate2b(const char *src, uint32_t ssize, char *dst, uint32_t *dsize, u
                 return -1;
             if (backbytes & 0xff000000)
                 return -1;
-            backbytes <<= 8;
+            backbytes = (int32_t)((uint32_t)(backbytes) << 8);
             backbytes += (unsigned char)(src[scur++]);
             backbytes ^= 0xffffffff;
 
@@ -425,7 +425,7 @@ int upx_inflate2d(const char *src, uint32_t ssize, char *dst, uint32_t *dsize, u
                 return -1;
             if (backbytes & 0xff000000)
                 return -1;
-            backbytes <<= 8;
+            backbytes = (int32_t)((uint32_t)(backbytes) << 8); 
             backbytes += (unsigned char)(src[scur++]);
             backbytes ^= 0xffffffff;
 
@@ -517,7 +517,7 @@ int upx_inflate2e(const char *src, uint32_t ssize, char *dst, uint32_t *dsize, u
                 return -1;
             if (backbytes & 0xff000000)
                 return -1;
-            backbytes <<= 8;
+            backbytes = (int32_t)((uint32_t)(backbytes) << 8);
             backbytes += (unsigned char)(src[scur++]);
             backbytes ^= 0xffffffff;
 
diff --git a/libclammspack/mspack/cabd.c b/libclammspack/mspack/cabd.c
index 75ef277..4dffd6b 100644
--- a/libclammspack/mspack/cabd.c
+++ b/libclammspack/mspack/cabd.c
@@ -1398,7 +1398,7 @@ static unsigned int cabd_checksum(unsigned char *data, unsigned int bytes,
   unsigned int len, ul = 0;
 
   for (len = bytes >> 2; len--; data += 4) {
-    cksum ^= ((data[0]) | (data[1]<<8) | (data[2]<<16) | (data[3]<<24));
+    cksum ^= ((data[0]) | ((unsigned int)(data[1])<<8) | ((unsigned int)(data[2])<<16) | ((unsigned int)(data[3])<<24));
   }
 
   switch (bytes & 3) {
-- 
2.27.0