pcre2: Fixing an issue using empty character sets in jit

(cherry picked from commit 601f6ef39eca661789da35b5aaaa9947bfb14c24)

backport-Fixing-an-issue-using-empty-character-sets-in-jit.patch

@@ -0,0 +1,74 @@
+From 994536c96fa571bcfd9232001e73b78c6afb9e67 Mon Sep 17 00:00:00 2001
+From: Zoltan Herczeg <hzmester@freemail.hu>
+Date: Thu, 21 Mar 2024 07:33:17 +0000
+Subject: [PATCH] Fixing an issue using empty character sets in jit
+
+Conflict:adapt context
+Reference:https://github.com/PCRE2Project/pcre2/commit/994536c96fa571bcfd9232001e73b78c6afb9e67
+
+---
+ src/pcre2_jit_compile.c | 23 ++++++++++++++++-------
+ src/pcre2_jit_test.c    |  1 +
+ 2 files changed, 17 insertions(+), 7 deletions(-)
+
+diff --git a/src/pcre2_jit_compile.c b/src/pcre2_jit_compile.c
+index afff36a..c19723b 100644
+--- a/src/pcre2_jit_compile.c
++++ b/src/pcre2_jit_compile.c
+@@ -6186,25 +6186,34 @@ if (max < 1)
+ /* Convert last_count to priority. */
+ for (i = 0; i < max; i++)
+   {
+-  SLJIT_ASSERT(chars[i].count > 0 && chars[i].last_count <= chars[i].count);
++  SLJIT_ASSERT(chars[i].last_count <= chars[i].count);
+ 
+-  if (chars[i].count == 1)
++  switch (chars[i].count)
+     {
++    case 0:
++    chars[i].count = 255;
++    chars[i].last_count = 0;
++    break;
++
++    case 1:
+     chars[i].last_count = (chars[i].last_count == 1) ? 7 : 5;
+     /* Simplifies algorithms later. */
+     chars[i].chars[1] = chars[i].chars[0];
+-    }
+-  else if (chars[i].count == 2)
+-    {
++    break;
++
++    case 2:
+     SLJIT_ASSERT(chars[i].chars[0] != chars[i].chars[1]);
+ 
+     if (is_powerof2(chars[i].chars[0] ^ chars[i].chars[1]))
+       chars[i].last_count = (chars[i].last_count == 2) ? 6 : 4;
+     else
+       chars[i].last_count = (chars[i].last_count == 2) ? 3 : 2;
+-    }
+-  else
++    break;
++
++    default:
+     chars[i].last_count = (chars[i].count == 255) ? 0 : 1;
++    break;
++    }
+   }
+ 
+ #ifdef JIT_HAS_FAST_FORWARD_CHAR_PAIR_SIMD
+diff --git a/src/pcre2_jit_test.c b/src/pcre2_jit_test.c
+index f051bd2..6d95bb9 100644
+--- a/src/pcre2_jit_test.c
++++ b/src/pcre2_jit_test.c
+@@ -396,6 +396,7 @@ static struct regression_test_case regression_test_cases[] = {
+ 	{ MU, A, 0, 0, "[\\x{10001}-\\x{10fffe}]+", "#\xc3\xa9\xe2\xb1\xa5\xf0\x90\x80\x80\xf0\x90\x80\x81\xf4\x8f\xbf\xbe\xf4\x8f\xbf\xbf" },
+ 	{ MU, A, 0, 0, "[^\\x{10001}-\\x{10fffe}]+", "\xf0\x90\x80\x81#\xc3\xa9\xe2\xb1\xa5\xf0\x90\x80\x80\xf4\x8f\xbf\xbf\xf4\x8f\xbf\xbe" },
+ 	{ CMU, A, 0, 0 | F_NOMATCH, "^[\\x{0100}-\\x{017f}]", " " },
++	{ M, A, 0, 0 | F_NOMATCH, "[^\\S\\W]{6}", "abcdefghijk" },
+ 
+ 	/* Unicode properties. */
+ 	{ MUP, A, 0, 0, "[1-5\xc3\xa9\\w]", "\xc3\xa1_" },
+-- 
+2.23.0
+

pcre2.spec

@@ -1,6 +1,6 @@
 Name:        pcre2
 Version:     10.42
-Release:     6
+Release:     7
 Summary:     Perl Compatible Regular Expressions
 License:     BSD
 URL:         http://www.pcre.org/
@@ -28,6 +28,7 @@ Patch6016:     backport-Fix-accept-and-endanchored-interaction-in-JIT.patch
 Patch6017:     backport-Fix-backreferences-with-unset-backref-and-non-greedy.patch
 Patch6018:     backport-Sanity-checks-for-ctype-functions-342.patch
 Patch6019:     backport-Fix-incorrect-class-character-matches-in-JIT.patch
+Patch6020:     backport-Fixing-an-issue-using-empty-character-sets-in-jit.patch
 
 BuildRequires:  autoconf libtool automake coreutils gcc make readline-devel
 Obsoletes:      pcre2-utf16 pcre2-utf32 pcre2-tools
@@ -145,6 +146,9 @@ make check
 %{_pkgdocdir}/html/
 
 %changelog
+* Tue May 07 2024 xujing <xujing125@huawei.com> - 10.42-7
+- DESC:Fixing an issue using empty character sets in jit
+
 * Wed Mar 06 2024 xujing <xujing125@huawei.com> - 10.42-6
 - DESC:exclude ChangeLog to avoid x86_64 conflict with i686