Use an explicit cast when a value gets stored in a smaller var.

[rsync/rsync.git] / checksum.c

diff --git a/checksum.c b/checksum.c
index c8b6cdf..9b62023 100644 (file)
--- a/checksum.c
+++ b/checksum.c
@@ -95,11 +95,11 @@ void get_checksum2(char *buf, int32 len, char *sum)
 
 void file_checksum(char *fname,char *sum,OFF_T size)
 {
-       OFF_T i;
        struct map_struct *buf;
-       int fd;
-       OFF_T len = size;
+       OFF_T i, len = size;
        struct mdfour m;
+       int32 remainder;
+       int fd;
 
        memset(sum,0,MD4_SUM_LENGTH);
 
@@ -120,8 +120,9 @@ void file_checksum(char *fname,char *sum,OFF_T size)
         * by failing to call mdfour_tail() for block sizes that
         * are multiples of 64.  This is fixed by calling mdfour_update()
         * even when there are no more bytes. */
-       if (len - i > 0 || protocol_version >= 27)
-               mdfour_update(&m, (uchar *)map_ptr(buf, i, len-i), len-i);
+       remainder = (int32)(len - i);
+       if (remainder > 0 || protocol_version >= 27)
+               mdfour_update(&m, (uchar *)map_ptr(buf, i, remainder), remainder);
 
        mdfour_result(&m, (uchar *)sum);