updating to pcre-8.43

Author: jkbzh

Changelog

@@ -4,6 +4,12 @@ Version Changes for Hypermail
 HYPERMAIL VERSION 2.4.0:
 ============================
 
+2019-11-19 Jose Kahan
+	* src/pcre
+	Upgraded to upstream version 8.43. This fixes some autoconf issues we
+	had on newer debian releases. This is only relevant for people that
+	are not linking against a system libpcre.
+
 2018-12-07 Jose Kahan
 	* If the antispamdomain config option was used, hypermail was replacing
 	everything following a "@" character by the antispam domain.  This fix

src/pcre/AUTHORS

@@ -8,7 +8,7 @@ Email domain:     cam.ac.uk
 University of Cambridge Computing Service,
 Cambridge, England.
 
-Copyright (c) 1997-2018 University of Cambridge
+Copyright (c) 1997-2019 University of Cambridge
 All rights reserved
 
 
@@ -19,7 +19,7 @@ Written by:       Zoltan Herczeg
 Email local part: hzmester
 Emain domain:     freemail.hu
 
-Copyright(c) 2010-2018 Zoltan Herczeg
+Copyright(c) 2010-2019 Zoltan Herczeg
 All rights reserved.
 
 
@@ -30,7 +30,7 @@ Written by:       Zoltan Herczeg
 Email local part: hzmester
 Emain domain:     freemail.hu
 
-Copyright(c) 2009-2018 Zoltan Herczeg
+Copyright(c) 2009-2019 Zoltan Herczeg
 All rights reserved.
 
 

src/pcre/ChangeLog

@@ -5,6 +5,49 @@ Note that the PCRE 8.xx series (PCRE1) is now in a bugfix-only state. All
 development is happening in the PCRE2 10.xx series.
 
 
+Version 8.43 23-February-2019
+-----------------------------
+
+1. Some time ago the config macro SUPPORT_UTF8 was changed to SUPPORT_UTF
+because it also applies to UTF-16 and UTF-32. However, this change was not made
+in the pcre2cpp files; consequently the C++ wrapper has from then been compiled
+with a bug in it, which would have been picked up by the unit test except that
+it also had its UTF8 code cut out. The bug was in a global replace when moving
+forward after matching an empty string.
+
+2. The C++ wrapper got broken a long time ago (version 7.3, August 2007) when
+(*CR) was invented (assuming it was the first such start-of-pattern option).
+The wrapper could never handle such patterns because it wraps patterns in
+(?:...)\z in order to support end anchoring. I have hacked in some code to fix
+this, that is, move the wrapping till after any existing start-of-pattern
+special settings.
+
+3. "pcre2grep" (sic) was accidentally mentioned in an error message (fix was
+ported from PCRE2).
+
+4. Typo LCC_ALL for LC_ALL fixed in pcregrep.
+
+5. In a pattern such as /[^\x{100}-\x{ffff}]*[\x80-\xff]/ which has a repeated
+negative class with no characters less than 0x100 followed by a positive class
+with only characters less than 0x100, the first class was incorrectly being
+auto-possessified, causing incorrect match failures.
+
+6. If the only branch in a conditional subpattern was anchored, the whole
+subpattern was treated as anchored, when it should not have been, since the
+assumed empty second branch cannot be anchored. Demonstrated by test patterns
+such as /(?(1)^())b/ or /(?(?=^))b/.
+
+7. Fix subject buffer overread in JIT when UTF is disabled and \X or \R has
+a greater than 1 fixed quantifier. This issue was found by Yunho Kim.
+
+8. If a pattern started with a subroutine call that had a quantifier with a
+minimum of zero, an incorrect "match must start with this character" could be
+recorded. Example: /(?&xxx)*ABC(?<xxx>XYZ)/ would (incorrectly) expect 'A' to
+be the first character of a match.
+
+9. Improve MAP_JIT flag usage on MacOS. Patch by Rich Siegel.
+
+
 Version 8.42 20-March-2018
 --------------------------
 

src/pcre/LICENCE

@@ -25,7 +25,7 @@ Email domain:     cam.ac.uk
 University of Cambridge Computing Service,
 Cambridge, England.
 
-Copyright (c) 1997-2018 University of Cambridge
+Copyright (c) 1997-2019 University of Cambridge
 All rights reserved.
 
 
@@ -34,9 +34,9 @@ PCRE JUST-IN-TIME COMPILATION SUPPORT
 
 Written by:       Zoltan Herczeg
 Email local part: hzmester
-Emain domain:     freemail.hu
+Email domain:     freemail.hu
 
-Copyright(c) 2010-2018 Zoltan Herczeg
+Copyright(c) 2010-2019 Zoltan Herczeg
 All rights reserved.
 
 
@@ -45,9 +45,9 @@ STACK-LESS JUST-IN-TIME COMPILER
 
 Written by:       Zoltan Herczeg
 Email local part: hzmester
-Emain domain:     freemail.hu
+Email domain:     freemail.hu
 
-Copyright(c) 2009-2018 Zoltan Herczeg
+Copyright(c) 2009-2019 Zoltan Herczeg
 All rights reserved.