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-rw-r--r--sha1_file.c16
1 files changed, 9 insertions, 7 deletions
diff --git a/sha1_file.c b/sha1_file.c
index 83a06a7..f007874 100644
--- 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);
}
}