fix unexpand/expand crash on invalid multibyte characters

Resolves: RHEL-152110

coreutils-i18n.patch

@@ -10,7 +10,7 @@ Subject: [PATCH] coreutils-i18n.patch
  lib/mbchar.c                |  23 ++
  lib/mbchar.h                | 373 +++++++++++++++++
  lib/mbfile.c                |  20 +
- lib/mbfile.h                | 267 ++++++++++++
+ lib/mbfile.h                | 261 ++++++++++++
  m4/mbchar.m4                |  13 +
  m4/mbfile.m4                |  14 +
  src/cut.c                   | 508 +++++++++++++++++++++--
@@ -34,7 +34,7 @@ Subject: [PATCH] coreutils-i18n.patch
  tests/sort/sort-merge.pl    |  42 ++
  tests/sort/sort.pl          |  40 +-
  tests/unexpand/mb.sh        | 173 ++++++++
- 30 files changed, 3606 insertions(+), 196 deletions(-)
+ 30 files changed, 3600 insertions(+), 196 deletions(-)
  create mode 100644 lib/mbchar.c
  create mode 100644 lib/mbchar.h
  create mode 100644 lib/mbfile.c
@@ -538,10 +538,10 @@ index 0000000..8d2957b
 +#include "mbfile.h"
 diff --git a/lib/mbfile.h b/lib/mbfile.h
 new file mode 100644
-index 0000000..ad61c19
+index 0000000..1ea1358
 --- /dev/null
 +++ b/lib/mbfile.h
-@@ -0,0 +1,267 @@
+@@ -0,0 +1,261 @@
 +/* Multibyte character I/O: macros for multi-byte encodings.
 +   Copyright (C) 2001, 2005, 2009-2023 Free Software Foundation, Inc.
 +
@@ -641,11 +641,7 @@ index 0000000..ad61c19
 +
 +  /* If mbf->state is not in an initial state, some more 32-bit wide character
 +     may be hiding in the state.  We need to call mbrtoc32 again.  */
-+  #if GNULIB_MBRTOC32_REGULAR
-+  assert (mbsinit (&mbf->state));
-+  #else
 +  if (mbsinit (&mbf->state))
-+  #endif
 +    {
 +      /* Before using mbrtoc32, we need at least one byte.  */
 +      if (new_bufcount == 0)
@@ -727,7 +723,6 @@ index 0000000..ad61c19
 +        }
 +      else
 +        {
-+          #if !GNULIB_MBRTOC32_REGULAR
 +          if (bytes == (size_t) -3)
 +            {
 +              /* The previous multibyte sequence produced an additional 32-bit
@@ -736,7 +731,6 @@ index 0000000..ad61c19
 +              bytes = 0;
 +            }
 +          else
-+          #endif
 +            {
 +              bytes = mbf->bufcount + bytes;
 +              mbf->bufcount = new_bufcount;

coreutils.spec

@@ -1,7 +1,7 @@
 Summary: A set of basic GNU tools commonly used in shell scripts
 Name:    coreutils
 Version: 9.5
-Release: 8%{?dist}
+Release: 9%{?dist}
 # some used parts of gnulib are under various variants of LGPL
 License: GPL-3.0-or-later AND GFDL-1.3-no-invariants-or-later AND LGPL-2.1-or-later AND LGPL-3.0-or-later
 Url:     https://www.gnu.org/software/coreutils/
@@ -273,6 +273,9 @@ rm -f $RPM_BUILD_ROOT%{_infodir}/dir
 %license COPYING
 
 %changelog
+* Thu Mar 19 2026 Lukáš Zaoral <lzaoral@redhat.com> - 9.5-9
+- fix unexpand/expand crash on invalid multibyte characters (RHEL-152110)
+
 * Thu Mar 19 2026 Lukáš Zaoral <lzaoral@redhat.com> - 9.5-8
 - fix df/direct.sh and unexpand/mb.sh tests (RHEL-151532)