[grep]backport patch from upstream

backport-grep-bug-backref-in-last-of-multiple-patter.patch

@@ -0,0 +1,67 @@
+From b061d24916fb9a14da37a3f2a05cb80dc65cfd38 Mon Sep 17 00:00:00 2001
+From: Paul Eggert <eggert@cs.ucla.edu>
+Date: Mon, 5 Dec 2022 14:16:45 -0800
+Subject: [PATCH] backport: grep: bug backref in last of multiple patterns
+
+---
+ src/dfasearch.c | 25 ++++++++++++-------------
+ tests/backref   |  8 ++++++++
+ 2 files changed, 20 insertions(+), 13 deletions(-)
+
+diff --git a/src/dfasearch.c b/src/dfasearch.c
+index d6afa8d..2d0e861 100644
+--- a/src/dfasearch.c
++++ b/src/dfasearch.c
+@@ -267,20 +267,19 @@ GEAcompile (char *pattern, size_t size, reg_syntax_t syntax_bits,
+   if (compilation_failed)
+     exit (EXIT_TROUBLE);
+ 
+-  if (prev <= patlim)
++  if (patlim < prev)
++    buflen--;
++  else if (pattern < prev)
+     {
+-      if (pattern < prev)
+-        {
+-          ptrdiff_t prevlen = patlim - prev;
+-          buf = xrealloc (buf, buflen + prevlen);
+-          memcpy (buf + buflen, prev, prevlen);
+-          buflen += prevlen;
+-        }
+-      else
+-        {
+-          buf = pattern;
+-          buflen = size;
+-        }
++      ptrdiff_t prevlen = patlim - prev;
++      buf = xrealloc (buf, buflen + prevlen);
++      memcpy (buf + buflen, prev, prevlen);
++      buflen += prevlen;
++    }
++  else
++    {
++      buf = pattern;
++      buflen = size;
+     }
+ 
+   /* In the match_words and match_lines cases, we use a different pattern
+diff --git a/tests/backref b/tests/backref
+index 947981b..5cc3060 100755
+--- a/tests/backref
++++ b/tests/backref
+@@ -43,4 +43,12 @@ if test $? -ne 2 ; then
+         failures=1
+ fi
+ 
++# https://bugs.gnu.org/36148#13
++echo 'Total failed: 2 (1 ignored)' |
++    grep -e '^Total failed: 0$' -e '^Total failed: \([0-9]*\) (\1 ignored)$'
++if test $? -ne 1 ; then
++        echo "Backref: Multiple -e test, test #5 failed"
++        failures=1
++fi
++
+ Exit $failures
+-- 
+2.30.1 (Apple Git-130)
+

grep.spec

@@ -1,6 +1,6 @@
 Name:    grep
 Version: 3.7
-Release: 4
+Release: 5
 Summary: A string search utility
 License: GPLv3+
 URL: http://www.gnu.org/software/grep/
@@ -11,6 +11,7 @@ Source3: grepconf.sh
 
 Patch1: backport-grep-avoid-sticky-problem-with-f-f.patch
 Patch2: backport-grep-s-does-not-suppress-binary-file-matches.patch
+Patch3: backport-grep-bug-backref-in-last-of-multiple-patter.patch
 
 BuildRequires: gcc pcre-devel >= 3.9-10 texinfo gettext libsigsegv-devel automake
 Provides: /bin/egrep /bin/fgrep /bin/grep bundled(gnulib)
@@ -55,8 +56,12 @@ make check
 
 
 %changelog
+* Mon Dec 26 2022 gaoruoshu <gaoruoshu@huawei.com> - 3.7-5
+- backport patch from upstream
+
 * Thu May 19 2022 licihua <licihua@huawei.com> -3.7-4
 - Added coloring aliases to fgrep egrep and grep
+
 * Fri Mar 18 2022 yangzhuangzhuang <yangzhuangzhuang1@h-partners.com> - 3.7-3
 - The -s option no longer suppresses "binary file matches" messages