Fix applying local x modifier while global xx was in effect

This commit is contained in:
Petr Písař 2017-07-27 07:58:52 +02:00
parent 1900b1bbed
commit d9a37e0df7
2 changed files with 112 additions and 1 deletions

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@ -0,0 +1,104 @@
From 7511f7fe27af8e5a8e56be790b5bdb9a56475f12 Mon Sep 17 00:00:00 2001
From: ph10 <ph10@6239d852-aaf2-0410-a92c-79f79f948069>
Date: Tue, 25 Jul 2017 15:27:30 +0000
Subject: [PATCH] Fix bug in /xx implementation.
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@848 6239d852-aaf2-0410-a92c-79f79f948069
Signed-off-by: Petr Písař <ppisar@redhat.com>
---
src/pcre2_compile.c | 19 ++++++++++++++-----
testdata/testinput1 | 12 ++++++++++++
testdata/testoutput1 | 16 ++++++++++++++++
3 files changed, 42 insertions(+), 5 deletions(-)
diff --git a/src/pcre2_compile.c b/src/pcre2_compile.c
index c4aa14e..8368b39 100644
--- a/src/pcre2_compile.c
+++ b/src/pcre2_compile.c
@@ -3535,8 +3535,12 @@ while (ptr < ptrend)
/* If x appears twice it sets the extended extended option. */
case CHAR_x:
- *optset |= ((*optset & PCRE2_EXTENDED) != 0)?
- PCRE2_EXTENDED_MORE : PCRE2_EXTENDED;
+ *optset |= PCRE2_EXTENDED;
+ if (ptr < ptrend && *ptr == CHAR_x)
+ {
+ *optset |= PCRE2_EXTENDED_MORE;
+ ptr++;
+ }
break;
default:
@@ -3545,11 +3549,16 @@ while (ptr < ptrend)
goto FAILED;
}
}
- options = (options | set) & (~unset);
- /* Unsetting extended should also get rid of extended-more. */
+ /* If we are setting extended without extended-more, ensure that any
+ existing extended-more gets unset. Also, unsetting extended must also
+ unset extended-more. */
- if ((options & PCRE2_EXTENDED) == 0) options &= ~PCRE2_EXTENDED_MORE;
+ if ((set & (PCRE2_EXTENDED|PCRE2_EXTENDED_MORE)) == PCRE2_EXTENDED ||
+ (unset & PCRE2_EXTENDED) != 0)
+ unset |= PCRE2_EXTENDED_MORE;
+
+ options = (options | set) & (~unset);
/* If the options ended with ')' this is not the start of a nested
group with option changes, so the options change at this level.
diff --git a/testdata/testinput1 b/testdata/testinput1
index 8c76e21..24de5b0 100644
--- a/testdata/testinput1
+++ b/testdata/testinput1
@@ -6146,4 +6146,16 @@ ef) x/x,mark
# --------------------------------------------------------------------------
+/<(?x:[a b])>/xx
+ < >
+
+/<(?:[a b])>/xx
+ < >
+
+/<(?xxx:[a b])>/
+ < >
+
+/<(?-x:[a b])>/xx
+ < >
+
# End of testinput1
diff --git a/testdata/testoutput1 b/testdata/testoutput1
index 85c1aad..ca955f2 100644
--- a/testdata/testoutput1
+++ b/testdata/testoutput1
@@ -9739,4 +9739,20 @@ No match
# --------------------------------------------------------------------------
+/<(?x:[a b])>/xx
+ < >
+ 0: < >
+
+/<(?:[a b])>/xx
+ < >
+No match
+
+/<(?xxx:[a b])>/
+ < >
+No match
+
+/<(?-x:[a b])>/xx
+ < >
+ 0: < >
+
# End of testinput1
--
2.9.4

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@ -2,7 +2,7 @@
%global rcversion RC1
Name: pcre2
Version: 10.30
Release: %{?rcversion:0.}2%{?rcversion:.%rcversion}%{?dist}.1
Release: %{?rcversion:0.}3%{?rcversion:.%rcversion}%{?dist}
%global myversion %{version}%{?rcversion:-%rcversion}
Summary: Perl-compatible regular expression library
# the library: BSD with exceptions
@ -49,6 +49,9 @@ Patch2: pcre2-10.30-RC1-Put-back-pcre2_set_recursion_limit-as-a-real-functio
Patch3: pcre2-10.30-RC1-Fix-formatting-converted_length.patch
# Fix a compiler warning in JIT code for ppc32, in upstream after 10.30-RC1
Patch4: pcre2-10.30-RC1-JIT-compiler-update.patch
# Fix applying local x modifier while global xx was in effect,
# in upstream after 10.30-RC1
Patch5: pcre2-10.30-RC1-Fix-bug-in-xx-implementation.patch
BuildRequires: autoconf
BuildRequires: automake
BuildRequires: coreutils
@ -128,6 +131,7 @@ Utilities demonstrating PCRE2 capabilities like pcre2grep or pcre2test.
%patch2 -p1
%patch3 -p1
%patch4 -p1
%patch5 -p1
# Because of multilib patch
libtoolize --copy --force
autoreconf -vif
@ -227,6 +231,9 @@ make %{?_smp_mflags} check VERBOSE=yes
%{_mandir}/man1/pcre2test.*
%changelog
* Thu Jul 27 2017 Petr Pisar <ppisar@redhat.com> - 10.30-0.3.RC1
- Fix applying local x modifier while global xx was in effect
* Thu Jul 27 2017 Fedora Release Engineering <releng@fedoraproject.org> - 10.30-0.2.RC1.1
- Rebuilt for https://fedoraproject.org/wiki/Fedora_27_Mass_Rebuild