1 files changed, 6 insertions, 0 deletions

diff --git a/libbb/copy_file.c b/libbb/copy_file.c
index 044bc3c20..c0928a5a8 100644
--- a/libbb/copy_file.c
+++ b/libbb/copy_file.c
@@ -105,12 +105,18 @@ int FAST_FUNC copy_file(const char *source, const char *dest, int flags)
                         return -1;
                 }
         } else {
+#if ENABLE_PLATFORM_POSIX || ENABLE_FEATURE_EXTRA_FILE_DATA
                 if (source_stat.st_dev == dest_stat.st_dev
                  && source_stat.st_ino == dest_stat.st_ino
+# if ENABLE_FEATURE_EXTRA_FILE_DATA
+                 /* ignore invalid inode numbers */
+                 && source_stat.st_ino != 0
+# endif
                 ) {
                         bb_error_msg("'%s' and '%s' are the same file", source, dest);
                         return -1;
                 }
+#endif
                 if (flags & FILEUTILS_NO_OVERWRITE) /* cp -n */
                         return 0;
                 dest_exists = 1;