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diff -r -U3 coreutils-6.12/lib/freadahead.c coreutils-6.12-patched/lib/freadahead.c
--- coreutils-6.12/lib/freadahead.c 2008-05-14 06:53:25.000000000 -0600
+++ coreutils-6.12-patched/lib/freadahead.c 2019-08-01 17:50:52.731658318 -0600
@@ -24,7 +24,7 @@
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-6.12/lib/freadptr.c coreutils-6.12-patched/lib/freadptr.c
--- coreutils-6.12/lib/freadptr.c 2008-05-14 06:53:25.000000000 -0600
+++ coreutils-6.12-patched/lib/freadptr.c 2019-08-01 17:51:06.867856472 -0600
@@ -29,7 +29,7 @@
size_t size;
/* Keep this code in sync with freadahead! */
-#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 NULL;
size = fp->_IO_read_end - fp->_IO_read_ptr;
diff -r -U3 coreutils-6.12/lib/freadseek.c coreutils-6.12-patched/lib/freadseek.c
--- coreutils-6.12/lib/freadseek.c 2008-05-14 06:53:25.000000000 -0600
+++ coreutils-6.12-patched/lib/freadseek.c 2019-08-01 17:51:21.264058094 -0600
@@ -34,7 +34,7 @@
freadptrinc (FILE *fp, size_t increment)
{
/* Keep this code in sync with freadptr! */
-#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->_IO_read_ptr += increment;
#elif defined __sferror || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
fp_->_p += increment;
diff -r -U3 coreutils-6.12/lib/fseterr.c coreutils-6.12-patched/lib/fseterr.c
--- coreutils-6.12/lib/fseterr.c 2008-05-14 06:53:25.000000000 -0600
+++ coreutils-6.12-patched/lib/fseterr.c 2019-08-01 17:51:36.668273645 -0600
@@ -29,7 +29,7 @@
/* 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 || defined __DragonFly__ /* FreeBSD, NetBSD, OpenBSD, DragonFly, MacOS X, Cygwin */
fp_->_flags |= __SERR;
diff -r -U3 coreutils-6.12/lib/stdio-impl.h coreutils-6.12-patched/lib/stdio-impl.h
--- coreutils-6.12/lib/stdio-impl.h 2008-05-14 06:53:25.000000000 -0600
+++ coreutils-6.12-patched/lib/stdio-impl.h 2019-08-01 17:49:51.518798189 -0600
@@ -18,6 +18,12 @@
the same implementation of stdio extension API, except that some fields
have different naming conventions, or their access requires some casts. */
+/* 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
/* BSD stdio derived implementations. */
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