Work around change in glibc

m4-1.4.18-glibc-change-work-around.patch

@@ -0,0 +1,115 @@
+diff -up m4-1.4.18/lib/fflush.c.orig m4-1.4.18/lib/fflush.c
+--- m4-1.4.18/lib/fflush.c.orig	2018-05-02 12:35:59.536851666 +0200
++++ m4-1.4.18/lib/fflush.c	2018-05-02 12:37:02.768958606 +0200
+@@ -33,7 +33,7 @@
+ #undef fflush
+ 
+ 
+-#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+ 
+ /* Clear the stream's ungetc buffer, preserving the value of ftello (fp).  */
+ static void
+@@ -72,7 +72,7 @@ clear_ungetc_buffer (FILE *fp)
+ 
+ #endif
+ 
+-#if ! (defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */)
++#if ! (defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */)
+ 
+ # if (defined __sferror || defined __DragonFly__ || defined __ANDROID__) && defined __SNPT
+ /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Android */
+@@ -148,7 +148,7 @@ rpl_fflush (FILE *stream)
+   if (stream == NULL || ! freading (stream))
+     return fflush (stream);
+ 
+-#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+ 
+   clear_ungetc_buffer_preserving_position (stream);
+ 
+diff -up m4-1.4.18/lib/fpending.c.orig m4-1.4.18/lib/fpending.c
+--- m4-1.4.18/lib/fpending.c.orig	2018-05-02 12:35:32.305806774 +0200
++++ m4-1.4.18/lib/fpending.c	2018-05-02 12:35:44.944827347 +0200
+@@ -32,7 +32,7 @@ __fpending (FILE *fp)
+   /* 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_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+   return fp->_IO_write_ptr - fp->_IO_write_base;
+ #elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
+   /* FreeBSD, NetBSD, OpenBSD, DragonFly, Mac OS X, Cygwin, Android */
+diff -up m4-1.4.18/lib/fpurge.c.orig m4-1.4.18/lib/fpurge.c
+--- m4-1.4.18/lib/fpurge.c.orig	2018-05-02 12:38:13.586078669 +0200
++++ m4-1.4.18/lib/fpurge.c	2018-05-02 12:38:38.785121867 +0200
+@@ -62,7 +62,7 @@ fpurge (FILE *fp)
+   /* 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_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++# if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+   fp->_IO_read_end = fp->_IO_read_ptr;
+   fp->_IO_write_ptr = fp->_IO_write_base;
+   /* Avoid memory leak when there is an active ungetc buffer.  */
+diff -up m4-1.4.18/lib/freadahead.c.orig m4-1.4.18/lib/freadahead.c
+--- m4-1.4.18/lib/freadahead.c.orig	2016-12-31 14:54:41.000000000 +0100
++++ m4-1.4.18/lib/freadahead.c	2018-05-02 11:43:19.570336724 +0200
+@@ -25,7 +25,7 @@
+ size_t
+ freadahead (FILE *fp)
+ {
+-#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+   if (fp->_IO_write_ptr > fp->_IO_write_base)
+     return 0;
+   return (fp->_IO_read_end - fp->_IO_read_ptr)
+diff -up m4-1.4.18/lib/freading.c.orig m4-1.4.18/lib/freading.c
+--- m4-1.4.18/lib/freading.c.orig	2018-05-02 12:37:33.970011368 +0200
++++ m4-1.4.18/lib/freading.c	2018-05-02 12:37:59.393054359 +0200
+@@ -31,7 +31,7 @@ freading (FILE *fp)
+   /* 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_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++# if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+   return ((fp->_flags & _IO_NO_WRITES) != 0
+           || ((fp->_flags & (_IO_NO_READS | _IO_CURRENTLY_PUTTING)) == 0
+               && fp->_IO_read_base != NULL));
+diff -up m4-1.4.18/lib/fseeko.c.orig m4-1.4.18/lib/fseeko.c
+--- m4-1.4.18/lib/fseeko.c.orig	2018-05-02 11:44:17.947460233 +0200
++++ m4-1.4.18/lib/fseeko.c	2018-05-02 12:39:49.537216897 +0200
+@@ -47,7 +47,7 @@ fseeko (FILE *fp, off_t offset, int when
+ #endif
+ 
+   /* These tests are based on fpurge.c.  */
+-#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+   if (fp->_IO_read_end == fp->_IO_read_ptr
+       && fp->_IO_write_ptr == fp->_IO_write_base
+       && fp->_IO_save_base == NULL)
+@@ -123,7 +123,7 @@ fseeko (FILE *fp, off_t offset, int when
+           return -1;
+         }
+ 
+-#if defined _IO_ftrylockfile || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
++#if defined _IO_EOF_SEEN || __GNU_LIBRARY__ == 1 /* GNU libc, BeOS, Haiku, Linux libc5 */
+       fp->_flags &= ~_IO_EOF_SEEN;
+       fp->_offset = pos;
+ #elif defined __sferror || defined __DragonFly__ || defined __ANDROID__
+diff -up m4-1.4.18/lib/stdio-impl.h.orig m4-1.4.18/lib/stdio-impl.h
+--- m4-1.4.18/lib/stdio-impl.h.orig	2016-12-31 14:54:42.000000000 +0100
++++ m4-1.4.18/lib/stdio-impl.h	2018-05-02 11:43:19.570336724 +0200
+@@ -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.  */
+ 

m4.spec

@@ -1,10 +1,12 @@
 Summary: The GNU macro processor
 Name: m4
 Version: 1.4.18
-Release: 7%{?dist}
+Release: 8%{?dist}
 License: GPLv3+
 Source0: http://ftp.gnu.org/gnu/m4/m4-%{version}.tar.xz
 Source1: http://ftp.gnu.org/gnu/m4/m4-%{version}.tar.xz.sig
+# Patch0: update to glibc libio.h removal, rhbz#1573342
+Patch0: m4-1.4.18-glibc-change-work-around.patch
 URL: http://www.gnu.org/software/m4/
 Requires(post): /sbin/install-info
 Requires(preun): /sbin/install-info
@@ -28,6 +30,7 @@ Install m4 if you need a macro processor.
 
 %prep
 %setup -q
+%patch0 -p1 -b .glibc-change-work-around
 chmod 644 COPYING
 
 %build
@@ -62,6 +65,10 @@ if [ "$1" = 0 ]; then
 fi
 
 %changelog
+* Wed May 02 2018 Vitezslav Crhonek <vcrhonek@redhat.com> - 1.4.18-8
+- Work around change in glibc
+  Resolves: #1573342
+
 * Thu Feb 22 2018 Vitezslav Crhonek <vcrhonek@redhat.com> - 1.4.18-7
 - Add BuildRequires gcc
 - Remove Group tag