csum-file: fix missing buf pointer update

diff --git a/unpack-objects.c b/unpack-objects.c
index 9da3ac89a85abc71cc1b2ec9159acb119ba23009..a792b92ece0770e5c2305b26d70eb26ee51d26c7 100644 (file)
--- a/unpack-objects.c
+++ b/unpack-objects.c
@@ -61,7 +61,7 @@ static int check_index(void)
        unsigned int nr;
        int i;
 
-       if (index_size < 4*256)
+       if (index_size < 4*256 + 20)
                return error("index file too small");
        nr = 0;
        for (i = 0; i < 256; i++) {
@@ -70,11 +70,15 @@ static int check_index(void)
                        return error("non-monotonic index");
                nr = n;
        }
-       if (index_size != 4*256 + nr * 24) {
-               printf("index_size=%lu, expected %u (%u)\n",
-                      index_size, 4*256 + nr * 24, nr);
+       /*
+        * Total size:
+        *  - 256 index entries 4 bytes each
+        *  - 24-byte entries * nr (20-byte sha1 + 4-byte offset)
+        *  - 20-byte SHA1 of the packfile
+        *  - 20-byte SHA1 file checksum
+        */
+       if (index_size != 4*256 + nr * 24 + 20 + 20)
                return error("wrong index file size");
-       }
 
        nr_entries = nr;
        pack_list = xmalloc(nr * sizeof(struct pack_entry *));