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-rw-r--r--io/ftw.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/io/ftw.c b/io/ftw.c
index f7e336541d..a89055e8c7 100644
--- a/io/ftw.c
+++ b/io/ftw.c
@@ -101,8 +101,14 @@ static int
object_compare (const void *p1, const void *p2)
{
/* We don't need a sophisticated and useful comparison. We are only
- interested in equality. */
- return memcmp (p1, p2, sizeof (struct known_object));
+ interested in equality. However, we must be careful not to
+ accidentally compare `holes' in the structure. */
+ const struct known_object *kp1 = p1, *kp2 = p2;
+ int cmp1;
+ cmp1 = memcmp(&kp1->dev, &kp2->dev, sizeof(kp1->dev));
+ if (cmp1 != 0)
+ return cmp1;
+ return memcmp (&kp1->ino, &kp2->ino, sizeof (kp1->ino));
}