--- origsrc/lib/root-dev-ino.h	2022-04-08 05:22:17.000000000 -0600
+++ src/lib/root-dev-ino.h	2022-05-08 00:59:46.346838200 -0600
@@ -21,19 +21,26 @@
 # include "dev-ino.h"
 # include "same-inode.h"
 
-struct dev_ino *
-get_root_dev_ino (struct dev_ino *root_d_i) _GL_ATTRIBUTE_NONNULL ();
+struct root_dev_ino
+{
+  struct dev_ino single_slash;
+  struct dev_ino double_slash;
+};
+
+struct root_dev_ino *
+get_root_dev_ino (struct root_dev_ino *root_d_i) _GL_ATTRIBUTE_NONNULL ();
 
 /* These macros are common to the programs that support the
    --preserve-root and --no-preserve-root options.  */
 
 # define ROOT_DEV_INO_CHECK(Root_dev_ino, Dir_statbuf) \
-    (Root_dev_ino && SAME_INODE (*Dir_statbuf, *Root_dev_ino))
+  (Root_dev_ino && (SAME_INODE (*Dir_statbuf, (Root_dev_ino)->single_slash) \
+                    || SAME_INODE (*Dir_statbuf, (Root_dev_ino)->double_slash)))
 
 # define ROOT_DEV_INO_WARN(Dirname)					\
   do									\
     {									\
-      if (STREQ (Dirname, "/"))						\
+      if (STREQ (Dirname, "/") || STREQ (Dirname, "//"))		\
         error (0, 0, _("it is dangerous to operate recursively on %s"),	\
                quoteaf (Dirname));					\
       else								\