Fix a mismatch if \K was involved in a recursion

pcre2-10.36-Fix-K-within-recursion-bug-in-interpreter.patch

@@ -0,0 +1,61 @@
+From 1ef05f50d623582e8493ab49cfe0c243eed175c9 Mon Sep 17 00:00:00 2001
+From: ph10 <ph10@6239d852-aaf2-0410-a92c-79f79f948069>
+Date: Thu, 18 Feb 2021 09:46:08 +0000
+Subject: [PATCH] Fix \K within recursion bug in interpreter.
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+git-svn-id: svn://vcs.exim.org/pcre2/code/trunk@1301 6239d852-aaf2-0410-a92c-79f79f948069
+Petr Písař: Ported to 10.36.
+---
+ src/pcre2_match.c    | 4 +++-
+ testdata/testinput1  | 3 +++
+ testdata/testoutput1 | 4 ++++
+
+diff --git a/src/pcre2_match.c b/src/pcre2_match.c
+index e3f78c2..7d9cad0 100644
+--- a/src/pcre2_match.c
++++ b/src/pcre2_match.c
+@@ -818,10 +818,12 @@ fprintf(stderr, "++ op=%d\n", *Fecode);
+ 
+       /* N is now the frame of the recursion; the previous frame is at the
+       OP_RECURSE position. Go back there, copying the current subject position
+-      and mark, and move on past the OP_RECURSE. */
++      and mark, and the start_match position (\K might have changed it), and
++      then move on past the OP_RECURSE. */
+ 
+       P->eptr = Feptr;
+       P->mark = Fmark;
++      P->start_match = Fstart_match; 
+       F = P;
+       Fecode += 1 + LINK_SIZE;
+       continue;
+diff --git a/testdata/testinput1 b/testdata/testinput1
+index bb4ddb7..4cf1126 100644
+--- a/testdata/testinput1
++++ b/testdata/testinput1
+@@ -6429,4 +6429,7 @@ ef) x/x,mark
+ /a{65536/
+     >a{65536<
+ 
++/a\K.(?0)*/
++    abac
++
+ # End of testinput1 
+diff --git a/testdata/testoutput1 b/testdata/testoutput1
+index 05b310b..8d4c108 100644
+--- a/testdata/testoutput1
++++ b/testdata/testoutput1
+@@ -10188,4 +10188,8 @@ No match
+     >a{65536<
+  0: a{65536
+ 
++/a\K.(?0)*/
++    abac
++ 0: c
++
+ # End of testinput1 
+-- 
+2.26.2
+

pcre2.spec

@@ -9,7 +9,7 @@
 #%%global rcversion RC1
 Name:       pcre2
 Version:    10.36
-Release:    %{?rcversion:0.}3%{?rcversion:.%rcversion}%{?dist}
+Release:    %{?rcversion:0.}4%{?rcversion:.%rcversion}%{?dist}
 %global     myversion %{version}%{?rcversion:-%rcversion}
 Summary:    Perl-compatible regular expression library
 # the library:                          BSD with exceptions
@@ -58,6 +58,8 @@ Patch1:     pcre2-10.36-Get-rid-of-gcc-fanalyzer-error-though-it-was-probabl.pat
 # a closing bracket as a quantifier, upstream bug #2690, in upstream after
 # 10.36
 Patch2:     pcre2-10.36-Fix-some-numerical-checking-bugs-Bugzilla-2690.patch
+# Fix a mismatch if \K was involved in a recursion, in upstream after 10.36
+Patch3:     pcre2-10.36-Fix-K-within-recursion-bug-in-interpreter.patch
 BuildRequires:  autoconf
 BuildRequires:  automake
 BuildRequires:  coreutils
@@ -261,6 +263,9 @@ make %{?_smp_mflags} check VERBOSE=yes
 %{_mandir}/man1/pcre2test.*
 
 %changelog
+* Fri Feb 19 2021 Petr Pisar <ppisar@redhat.com> - 10.36-4
+- Fix a mismatch if \K was involved in a recursion
+
 * Tue Feb 02 2021 Petr Pisar <ppisar@redhat.com> - 10.36-3
 - Fix misparsing long numbers as a backreference and a number without
   a closing bracket as a quantifier (upstream bug #2690)