diff -r -U3 coreutils-6.11/lib/freadahead.c coreutils-6.11-patched/lib/freadahead.c
--- coreutils-6.11/lib/freadahead.c	2008-04-17 03:59:17.000000000 -0600
+++ coreutils-6.11-patched/lib/freadahead.c	2019-08-01 20:20:12.712193242 -0600
@@ -19,10 +19,17 @@
 /* Specification.  */
 #include "freadahead.h"
 
+/* Glibc 2.28 made _IO_IN_BACKUP private.  For now, work around this
+ *    problem by defining it ourselves.  FIXME: Do not rely on glibc
+ *       internals.  */
+#if !defined _IO_IN_BACKUP && defined _IO_EOF_SEEN
+# define _IO_IN_BACKUP 0x100
+#endif
+
 size_t
 freadahead (FILE *fp)
 {
-#if defined _IO_ferror_unlocked || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Linux libc5 */
+#if defined _IO_EOF_SEEN || defined _IO_ferror_unlocked || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Linux libc5 */
   if (fp->_IO_write_ptr > fp->_IO_write_base)
     return 0;
   return (fp->_IO_read_end - fp->_IO_read_ptr)
diff -r -U3 coreutils-6.11/lib/fseterr.c coreutils-6.11-patched/lib/fseterr.c
--- coreutils-6.11/lib/fseterr.c	2008-04-17 03:59:17.000000000 -0600
+++ coreutils-6.11-patched/lib/fseterr.c	2019-08-01 20:20:37.868480486 -0600
@@ -27,7 +27,7 @@
   /* Most systems provide FILE as a struct and the necessary bitmask in
      <stdio.h>, because they need it for implementing getc() and putc() as
      fast macros.  */
-#if defined _IO_ferror_unlocked || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Linux libc5 */
+#if defined _IO_EOF_SEEN || defined _IO_ferror_unlocked || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Linux libc5 */
   fp->_flags |= _IO_ERR_SEEN;
 #elif defined __sferror             /* FreeBSD, NetBSD, OpenBSD, MacOS X, Cygwin */
   fp->_flags |= __SERR;