Fix and improve t7004 (git-tag tests)

diff --git a/sha1_file.c b/sha1_file.c
index 83a06a7aed84715db191b703e529d3501df0a8f2..f007874cbb034ec9efa7f73c42831e0037d452fa 100644 (file)
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -521,13 +521,15 @@ static int check_packed_git_idx(const char *path,  struct packed_git *p)
                        munmap(idx_map, idx_size);
                        return error("wrong index v2 file size in %s", path);
                }
-               if (idx_size != min_size) {
-                       /* make sure we can deal with large pack offsets */
-                       off_t x = 0x7fffffffUL, y = 0xffffffffUL;
-                       if (x > (x + 1) || y > (y + 1)) {
-                               munmap(idx_map, idx_size);
-                               return error("pack too large for current definition of off_t in %s", path);
-                       }
+               if (idx_size != min_size &&
+                   /*
+                    * make sure we can deal with large pack offsets.
+                    * 31-bit signed offset won't be enough, neither
+                    * 32-bit unsigned one will be.
+                    */
+                   (sizeof(off_t) <= 4)) {
+                       munmap(idx_map, idx_size);
+                       return error("pack too large for current definition of off_t in %s", path);
                }
        }