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--- ./lib/stdio-impl.h.orig 2012-11-06 05:42:58.000000000 -0600
+++ ./lib/stdio-impl.h 2018-09-18 18:43:39.324058680 -0500
@@ -92,3 +92,10 @@
# endif
#endif
+
+/* 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
--- ./lib/freadahead.c.orig 2012-11-06 05:42:58.000000000 -0600
+++ ./lib/freadahead.c 2018-09-18 18:43:39.319058680 -0500
@@ -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 || __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)
--- ./lib/freadseek.c.orig 2012-11-06 05:42:58.000000000 -0600
+++ ./lib/freadseek.c 2018-09-18 18:43:39.322058680 -0500
@@ -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 || __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;
--- ./lib/fseterr.c.orig 2012-11-06 05:42:58.000000000 -0600
+++ ./lib/fseterr.c 2018-09-18 18:43:39.323058680 -0500
@@ -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 || __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;
--- ./lib/freadptr.c.orig 2012-11-06 05:42:58.000000000 -0600
+++ ./lib/freadptr.c 2018-09-18 18:43:39.321058680 -0500
@@ -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 || __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;
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