Use upstream fix for a crash in pcre2_substitute() function if mcontext argument is NULL
It adds tests and updates documentation.
This commit is contained in:
Petr Písař
parent
419e370ef0
commit
adfdca64c3
@ -1,43 +0,0 @@
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From 25c6e08a2c43d50140401e620fff11aa0670effd Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Petr=20P=C3=ADsa=C5=99?= <ppisar@redhat.com>
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Date: Mon, 11 Mar 2019 12:52:10 +0100
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Subject: [PATCH] Fix a crash in pcre2_substitute() if mcontext is NULL
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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A regression introduced in:
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commit 3c2c4493cc3b12dddd2493b465f0ce50e3f77b5a
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Author: ph10 <ph10@6239d852-aaf2-0410-a92c-79f79f948069>
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Date: Tue Sep 18 16:31:30 2018 +0000
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Implement callouts from pcre2_substitute().
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git-svn-id: svn://vcs.exim.org/pcre2/code/trunk@1012 6239d852-aaf2-0410-a92c-79f79f948069
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causes a crash in pcre2_substitute() if called with a NULL mcontext argument.
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This patch ffixes it.
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<https://bugs.exim.org/show_bug.cgi?id=2382>
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Signed-off-by: Petr Písař <ppisar@redhat.com>
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---
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src/pcre2_substitute.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/src/pcre2_substitute.c b/src/pcre2_substitute.c
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index 0b46629..0b63ef4 100644
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--- a/src/pcre2_substitute.c
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+++ b/src/pcre2_substitute.c
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@@ -839,7 +839,7 @@ do
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remembered. Do the callout if there is one and we have done an actual
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replacement. */
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- if (!overflowed && mcontext->substitute_callout != NULL)
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+ if (!overflowed && mcontext != NULL && mcontext->substitute_callout != NULL)
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{
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scb.subscount = subs;
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scb.output_offsets[1] = buff_offset;
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--
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2.20.1
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@ -0,0 +1,322 @@
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From 3bf3763f680dc980cda4135c91d85d8fe9ab2bb6 Mon Sep 17 00:00:00 2001
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From: ph10 <ph10@6239d852-aaf2-0410-a92c-79f79f948069>
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Date: Mon, 11 Mar 2019 17:29:08 +0000
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Subject: [PATCH] Fix crash in pcre2_substitute() with NULL match context.
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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git-svn-id: svn://vcs.exim.org/pcre2/code/trunk@1081 6239d852-aaf2-0410-a92c-79f79f948069
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Signed-off-by: Petr Písař <ppisar@redhat.com>
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---
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ChangeLog | 8 +++++---
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doc/html/pcre2test.html | 18 ++++++++++--------
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doc/pcre2test.1 | 20 +++++++++++---------
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doc/pcre2test.txt | 18 ++++++++++--------
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src/pcre2_substitute.c | 2 +-
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src/pcre2test.c | 24 +++++++++++++-----------
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testdata/testinput2 | 8 ++++++++
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testdata/testoutput2 | 12 ++++++++++++
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8 files changed, 70 insertions(+), 40 deletions(-)
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diff --git a/ChangeLog b/ChangeLog
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index b9f1b96..331cb2f 100644
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--- a/ChangeLog
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+++ b/ChangeLog
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@@ -2,8 +2,8 @@ Change Log for PCRE2
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--------------------
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-Version 10.33-RC1 03-March-2019
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--------------------------------
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+Version 10.33 11-March-2019
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+---------------------------
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1. Added "allvector" to pcre2test to make it easy to check the part of the
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ovector that shouldn't be changed, in particular after substitute and failed or
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@@ -12,7 +12,9 @@ partial matches.
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2. Fix subject buffer overread in JIT when UTF is disabled and \X or \R has
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a greater than 1 fixed quantifier. This issue was found by Yunho Kim.
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-3. Added support for callouts from pcre2_substitute().
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+3. Added support for callouts from pcre2_substitute(). After 10.33-RC1, but
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+prior to release, fixed a bug that caused a crash if pcre2_substitute() was
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+called with a NULL match context.
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4. The POSIX functions are now all called pcre2_regcomp() etc., with wrapper
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functions that use the standard POSIX names. However, in pcre2posix.h the POSIX
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diff --git a/doc/html/pcre2test.html b/doc/html/pcre2test.html
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index 8f35acc..083d5cc 100644
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--- a/doc/html/pcre2test.html
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+++ b/doc/html/pcre2test.html
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@@ -1450,8 +1450,10 @@ Testing substitute callouts
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</b><br>
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<P>
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If the <b>substitute_callout</b> modifier is set, a substitution callout
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-function is set up. When it is called (after each substitution), details of the
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-the input and output strings are output. For example:
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+function is set up. The <b>null_context</b> modifier must not be set, because
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+the address of the callout function is passed in a match context. When the
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+callout function is called (after each substitution), details of the the input
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+and output strings are output. For example:
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<pre>
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/abc/g,replace=<$0>,substitute_callout
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abcdefabcpqr
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@@ -1626,11 +1628,11 @@ Passing a NULL context
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</b><br>
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<P>
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Normally, <b>pcre2test</b> passes a context block to <b>pcre2_match()</b>,
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-<b>pcre2_dfa_match()</b> or <b>pcre2_jit_match()</b>. If the <b>null_context</b>
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-modifier is set, however, NULL is passed. This is for testing that the matching
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-functions behave correctly in this case (they use default values). This
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-modifier cannot be used with the <b>find_limits</b> modifier or when testing the
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-substitution function.
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+<b>pcre2_dfa_match()</b>, <b>pcre2_jit_match()</b> or <b>pcre2_substitute()</b>.
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+If the <b>null_context</b> modifier is set, however, NULL is passed. This is for
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+testing that the matching and substitution functions behave correctly in this
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+case (they use default values). This modifier cannot be used with the
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+<b>find_limits</b> or <b>substitute_callout</b> modifiers.
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</P>
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<br><a name="SEC12" href="#TOC1">THE ALTERNATIVE MATCHING FUNCTION</a><br>
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<P>
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@@ -2076,7 +2078,7 @@ Cambridge, England.
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</P>
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<br><a name="SEC21" href="#TOC1">REVISION</a><br>
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<P>
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-Last updated: 11 February 2019
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+Last updated: 11 March 2019
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<br>
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Copyright © 1997-2019 University of Cambridge.
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<br>
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diff --git a/doc/pcre2test.1 b/doc/pcre2test.1
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index 954e043..568e705 100644
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--- a/doc/pcre2test.1
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+++ b/doc/pcre2test.1
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@@ -1,4 +1,4 @@
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-.TH PCRE2TEST 1 "11 February 2019" "PCRE 10.33"
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+.TH PCRE2TEST 1 "11 March 2019" "PCRE 10.33"
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.SH NAME
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pcre2test - a program for testing Perl-compatible regular expressions.
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.SH SYNOPSIS
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@@ -1417,8 +1417,10 @@ matching provokes an error return ("bad option value") from
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.rs
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.sp
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If the \fBsubstitute_callout\fP modifier is set, a substitution callout
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-function is set up. When it is called (after each substitution), details of the
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-the input and output strings are output. For example:
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+function is set up. The \fBnull_context\fP modifier must not be set, because
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+the address of the callout function is passed in a match context. When the
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+callout function is called (after each substitution), details of the the input
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+and output strings are output. For example:
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.sp
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/abc/g,replace=<$0>,substitute_callout
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abcdefabcpqr
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@@ -1587,11 +1589,11 @@ passing the replacement string as zero-terminated.
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.rs
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.sp
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Normally, \fBpcre2test\fP passes a context block to \fBpcre2_match()\fP,
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-\fBpcre2_dfa_match()\fP or \fBpcre2_jit_match()\fP. If the \fBnull_context\fP
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-modifier is set, however, NULL is passed. This is for testing that the matching
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-functions behave correctly in this case (they use default values). This
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-modifier cannot be used with the \fBfind_limits\fP modifier or when testing the
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-substitution function.
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+\fBpcre2_dfa_match()\fP, \fBpcre2_jit_match()\fP or \fBpcre2_substitute()\fP.
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+If the \fBnull_context\fP modifier is set, however, NULL is passed. This is for
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+testing that the matching and substitution functions behave correctly in this
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+case (they use default values). This modifier cannot be used with the
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+\fBfind_limits\fP or \fBsubstitute_callout\fP modifiers.
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.
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.
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.SH "THE ALTERNATIVE MATCHING FUNCTION"
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@@ -2057,6 +2059,6 @@ Cambridge, England.
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.rs
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.sp
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.nf
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-Last updated: 11 February 2019
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+Last updated: 11 March 2019
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Copyright (c) 1997-2019 University of Cambridge.
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.fi
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diff --git a/doc/pcre2test.txt b/doc/pcre2test.txt
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index ca3b7e3..cbe3528 100644
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--- a/doc/pcre2test.txt
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+++ b/doc/pcre2test.txt
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@@ -1303,8 +1303,10 @@ SUBJECT MODIFIERS
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Testing substitute callouts
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If the substitute_callout modifier is set, a substitution callout func-
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- tion is set up. When it is called (after each substitution), details of
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- the the input and output strings are output. For example:
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+ tion is set up. The null_context modifier must not be set, because the
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+ address of the callout function is passed in a match context. When the
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+ callout function is called (after each substitution), details of the
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+ the input and output strings are output. For example:
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/abc/g,replace=<$0>,substitute_callout
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abcdefabcpqr
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@@ -1457,11 +1459,11 @@ SUBJECT MODIFIERS
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Passing a NULL context
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Normally, pcre2test passes a context block to pcre2_match(),
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- pcre2_dfa_match() or pcre2_jit_match(). If the null_context modifier is
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- set, however, NULL is passed. This is for testing that the matching
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- functions behave correctly in this case (they use default values). This
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- modifier cannot be used with the find_limits modifier or when testing
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- the substitution function.
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+ pcre2_dfa_match(), pcre2_jit_match() or pcre2_substitute(). If the
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+ null_context modifier is set, however, NULL is passed. This is for
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+ testing that the matching and substitution functions behave correctly
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+ in this case (they use default values). This modifier cannot be used
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+ with the find_limits or substitute_callout modifiers.
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THE ALTERNATIVE MATCHING FUNCTION
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@@ -1888,5 +1890,5 @@ AUTHOR
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REVISION
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- Last updated: 11 February 2019
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+ Last updated: 11 March 2019
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Copyright (c) 1997-2019 University of Cambridge.
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diff --git a/src/pcre2_substitute.c b/src/pcre2_substitute.c
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index 0b46629..0b63ef4 100644
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--- a/src/pcre2_substitute.c
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+++ b/src/pcre2_substitute.c
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@@ -839,7 +839,7 @@ do
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remembered. Do the callout if there is one and we have done an actual
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replacement. */
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- if (!overflowed && mcontext->substitute_callout != NULL)
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+ if (!overflowed && mcontext != NULL && mcontext->substitute_callout != NULL)
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{
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scb.subscount = subs;
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scb.output_offsets[1] = buff_offset;
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diff --git a/src/pcre2test.c b/src/pcre2test.c
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index e493099..46722ef 100644
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--- a/src/pcre2test.c
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+++ b/src/pcre2test.c
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@@ -1388,13 +1388,13 @@ are supported. */
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#define PCRE2_SUBSTITUTE(a,b,c,d,e,f,g,h,i,j,k,l) \
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if (test_mode == PCRE8_MODE) \
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- a = pcre2_substitute_8(G(b,8),(PCRE2_SPTR8)c,d,e,f,G(g,8),G(h,8), \
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+ a = pcre2_substitute_8(G(b,8),(PCRE2_SPTR8)c,d,e,f,G(g,8),h, \
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(PCRE2_SPTR8)i,j,(PCRE2_UCHAR8 *)k,l); \
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else if (test_mode == PCRE16_MODE) \
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- a = pcre2_substitute_16(G(b,16),(PCRE2_SPTR16)c,d,e,f,G(g,16),G(h,16), \
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+ a = pcre2_substitute_16(G(b,16),(PCRE2_SPTR16)c,d,e,f,G(g,16),h, \
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(PCRE2_SPTR16)i,j,(PCRE2_UCHAR16 *)k,l); \
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else \
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- a = pcre2_substitute_32(G(b,32),(PCRE2_SPTR32)c,d,e,f,G(g,32),G(h,32), \
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+ a = pcre2_substitute_32(G(b,32),(PCRE2_SPTR32)c,d,e,f,G(g,32),h, \
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(PCRE2_SPTR32)i,j,(PCRE2_UCHAR32 *)k,l)
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#define PCRE2_SUBSTRING_COPY_BYNAME(a,b,c,d,e) \
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@@ -1866,11 +1866,11 @@ the three different cases. */
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#define PCRE2_SUBSTITUTE(a,b,c,d,e,f,g,h,i,j,k,l) \
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if (test_mode == G(G(PCRE,BITONE),_MODE)) \
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a = G(pcre2_substitute_,BITONE)(G(b,BITONE),(G(PCRE2_SPTR,BITONE))c,d,e,f, \
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- G(g,BITONE),G(h,BITONE),(G(PCRE2_SPTR,BITONE))i,j, \
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+ G(g,BITONE),h,(G(PCRE2_SPTR,BITONE))i,j, \
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(G(PCRE2_UCHAR,BITONE) *)k,l); \
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else \
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a = G(pcre2_substitute_,BITTWO)(G(b,BITTWO),(G(PCRE2_SPTR,BITTWO))c,d,e,f, \
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- G(g,BITTWO),G(h,BITTWO),(G(PCRE2_SPTR,BITTWO))i,j, \
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+ G(g,BITTWO),h,(G(PCRE2_SPTR,BITTWO))i,j, \
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(G(PCRE2_UCHAR,BITTWO) *)k,l)
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#define PCRE2_SUBSTRING_COPY_BYNAME(a,b,c,d,e) \
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@@ -2068,7 +2068,7 @@ the three different cases. */
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pcre2_set_substitute_callout_8(G(a,8), \
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(int (*)(pcre2_substitute_callout_block_8 *, void *))b,c)
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#define PCRE2_SUBSTITUTE(a,b,c,d,e,f,g,h,i,j,k,l) \
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- a = pcre2_substitute_8(G(b,8),(PCRE2_SPTR8)c,d,e,f,G(g,8),G(h,8), \
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+ a = pcre2_substitute_8(G(b,8),(PCRE2_SPTR8)c,d,e,f,G(g,8),h, \
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(PCRE2_SPTR8)i,j,(PCRE2_UCHAR8 *)k,l)
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#define PCRE2_SUBSTRING_COPY_BYNAME(a,b,c,d,e) \
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a = pcre2_substring_copy_byname_8(G(b,8),G(c,8),(PCRE2_UCHAR8 *)d,e)
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@@ -2175,7 +2175,7 @@ the three different cases. */
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pcre2_set_substitute_callout_16(G(a,16), \
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(int (*)(pcre2_substitute_callout_block_16 *, void *))b,c)
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#define PCRE2_SUBSTITUTE(a,b,c,d,e,f,g,h,i,j,k,l) \
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- a = pcre2_substitute_16(G(b,16),(PCRE2_SPTR16)c,d,e,f,G(g,16),G(h,16), \
|
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+ a = pcre2_substitute_16(G(b,16),(PCRE2_SPTR16)c,d,e,f,G(g,16),h, \
|
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(PCRE2_SPTR16)i,j,(PCRE2_UCHAR16 *)k,l)
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#define PCRE2_SUBSTRING_COPY_BYNAME(a,b,c,d,e) \
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a = pcre2_substring_copy_byname_16(G(b,16),G(c,16),(PCRE2_UCHAR16 *)d,e)
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@@ -2282,7 +2282,7 @@ the three different cases. */
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pcre2_set_substitute_callout_32(G(a,32), \
|
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(int (*)(pcre2_substitute_callout_block_32 *, void *))b,c)
|
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#define PCRE2_SUBSTITUTE(a,b,c,d,e,f,g,h,i,j,k,l) \
|
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- a = pcre2_substitute_32(G(b,32),(PCRE2_SPTR32)c,d,e,f,G(g,32),G(h,32), \
|
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+ a = pcre2_substitute_32(G(b,32),(PCRE2_SPTR32)c,d,e,f,G(g,32),h, \
|
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(PCRE2_SPTR32)i,j,(PCRE2_UCHAR32 *)k,l)
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#define PCRE2_SUBSTRING_COPY_BYNAME(a,b,c,d,e) \
|
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a = pcre2_substring_copy_byname_32(G(b,32),G(c,32),(PCRE2_UCHAR32 *)d,e)
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@@ -6939,11 +6939,13 @@ for (k = 0; k < sizeof(exclusive_dat_controls)/sizeof(uint32_t); k++)
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if (pat_patctl.replacement[0] != 0)
|
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{
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- if ((dat_datctl.control & CTL_NULLCONTEXT) != 0)
|
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+ if ((dat_datctl.control2 & CTL2_SUBSTITUTE_CALLOUT) != 0 &&
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+ (dat_datctl.control & CTL_NULLCONTEXT) != 0)
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{
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- fprintf(outfile, "** Replacement text is not supported with null_context.\n");
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+ fprintf(outfile, "** Replacement callouts are not supported with null_context.\n");
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return PR_OK;
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}
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+
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if ((dat_datctl.control & CTL_ALLCAPTURES) != 0)
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fprintf(outfile, "** Ignored with replacement text: allcaptures\n");
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}
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@@ -7335,7 +7337,7 @@ if (dat_datctl.replacement[0] != 0)
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}
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PCRE2_SUBSTITUTE(rc, compiled_code, pp, arg_ulen, dat_datctl.offset,
|
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- dat_datctl.options|xoptions, match_data, dat_context,
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+ dat_datctl.options|xoptions, match_data, use_dat_context,
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rbuffer, rlen, nbuffer, &nsize);
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if (rc < 0)
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diff --git a/testdata/testinput2 b/testdata/testinput2
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index 433f9f8..9e59b62 100644
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--- a/testdata/testinput2
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+++ b/testdata/testinput2
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@@ -5579,4 +5579,12 @@ a)"xI
|
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/(*ACCEPT:XX)^abc/I
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+/abc/replace=xyz
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+ abc\=null_context
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+
|
||||
+/abc/replace=xyz,substitute_callout
|
||||
+ abc
|
||||
+\= Expect error message
|
||||
+ abc\=null_context
|
||||
+
|
||||
# End of testinput2
|
||||
diff --git a/testdata/testoutput2 b/testdata/testoutput2
|
||||
index d0e289d..2f91c38 100644
|
||||
--- a/testdata/testoutput2
|
||||
+++ b/testdata/testoutput2
|
||||
@@ -16922,6 +16922,18 @@ Subject length lower bound = 3
|
||||
Capture group count = 0
|
||||
Subject length lower bound = 0
|
||||
|
||||
+/abc/replace=xyz
|
||||
+ abc\=null_context
|
||||
+ 1: xyz
|
||||
+
|
||||
+/abc/replace=xyz,substitute_callout
|
||||
+ abc
|
||||
+ 1(1) Old 0 3 "abc" New 0 3 "xyz"
|
||||
+ 1: xyz
|
||||
+\= Expect error message
|
||||
+ abc\=null_context
|
||||
+** Replacement callouts are not supported with null_context.
|
||||
+
|
||||
# End of testinput2
|
||||
Error -70: PCRE2_ERROR_BADDATA (unknown error number)
|
||||
Error -62: bad serialized data
|
||||
--
|
||||
2.20.1
|
||||
|
||||
10
pcre2.spec
10
pcre2.spec
@ -9,7 +9,7 @@
|
||||
%global rcversion RC1
|
||||
Name: pcre2
|
||||
Version: 10.33
|
||||
Release: %{?rcversion:0.}2%{?rcversion:.%rcversion}%{?dist}
|
||||
Release: %{?rcversion:0.}3%{?rcversion:.%rcversion}%{?dist}
|
||||
%global myversion %{version}%{?rcversion:-%rcversion}
|
||||
Summary: Perl-compatible regular expression library
|
||||
# the library: BSD with exceptions
|
||||
@ -50,8 +50,8 @@ Source: ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/%{?rcversion:T
|
||||
# Do no set RPATH if libdir is not /usr/lib
|
||||
Patch0: pcre2-10.10-Fix-multilib.patch
|
||||
# Fix a crash in pcre2_substitute() function if mcontext argument is NULL,
|
||||
# bug #1686434, upstream bug #2382, proposed to upstream
|
||||
Patch1: pcre2-10.33-RC1-Fix-a-crash-in-pcre2_substitute-if-mcontext-is-NULL.patch
|
||||
# bug #1686434, upstream bug #2382, in upstream after 10.33-RC1
|
||||
Patch1: pcre2-10.33-RC1-Fix-crash-in-pcre2_substitute-with-NULL-match-contex.patch
|
||||
BuildRequires: autoconf
|
||||
BuildRequires: automake
|
||||
BuildRequires: coreutils
|
||||
@ -227,6 +227,10 @@ make %{?_smp_mflags} check VERBOSE=yes
|
||||
%{_mandir}/man1/pcre2test.*
|
||||
|
||||
%changelog
|
||||
* Wed Mar 13 2019 Petr Pisar <ppisar@redhat.com> - 10.33-0.3.RC1
|
||||
- Use upstream fix for a crash in pcre2_substitute() function if mcontext
|
||||
argument is NULL (bug #1686434)
|
||||
|
||||
* Mon Mar 11 2019 Petr Pisar <ppisar@redhat.com> - 10.33-0.2.RC1
|
||||
- Fix a crash in pcre2_substitute() function if mcontext argument is NULL
|
||||
(bug #1686434)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user