From dccfaa4129112e08ed94817bf6bdfad09fb0f237 Mon Sep 17 00:00:00 2001
From: Edward Thomson <ethomson@edwardthomson.com>
Date: Sun, 4 Oct 2020 20:36:22 +0100
Subject: pcre: upgrade to 8.43

---
 deps/pcre/LICENCE            | 10 +++++-----
 deps/pcre/pcre.h             |  4 ++--
 deps/pcre/pcre_compile.c     | 18 ++++++++++++++----
 deps/pcre/pcre_jit_compile.c |  2 +-
 4 files changed, 22 insertions(+), 12 deletions(-)

diff --git a/deps/pcre/LICENCE b/deps/pcre/LICENCE
index f6ef7fd76..760a6666b 100644
--- a/deps/pcre/LICENCE
+++ b/deps/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.
 
 
diff --git a/deps/pcre/pcre.h b/deps/pcre/pcre.h
index 15592b9e5..c6ca5cae5 100644
--- a/deps/pcre/pcre.h
+++ b/deps/pcre/pcre.h
@@ -42,9 +42,9 @@ POSSIBILITY OF SUCH DAMAGE.
 /* The current PCRE version information. */
 
 #define PCRE_MAJOR          8
-#define PCRE_MINOR          42
+#define PCRE_MINOR          43
 #define PCRE_PRERELEASE
-#define PCRE_DATE           2018-03-20
+#define PCRE_DATE           2019-02-23
 
 #define PCRE_EXP_DECL  extern
 
diff --git a/deps/pcre/pcre_compile.c b/deps/pcre/pcre_compile.c
index 02de494b1..a84e268d7 100644
--- a/deps/pcre/pcre_compile.c
+++ b/deps/pcre/pcre_compile.c
@@ -6,7 +6,7 @@
 and semantics are as close as possible to those of the Perl 5 language.
 
                        Written by Philip Hazel
-           Copyright (c) 1997-2016 University of Cambridge
+           Copyright (c) 1997-2018 University of Cambridge
 
 -----------------------------------------------------------------------------
 Redistribution and use in source and binary forms, with or without
@@ -3299,7 +3299,7 @@ for(;;)
       if ((*xclass_flags & XCL_MAP) == 0)
         {
         /* No bits are set for characters < 256. */
-        if (list[1] == 0) return TRUE;
+        if (list[1] == 0) return (*xclass_flags & XCL_NOT) == 0;
         /* Might be an empty repeat. */
         continue;
         }
@@ -7647,6 +7647,8 @@ for (;; ptr++)
         /* Can't determine a first byte now */
 
         if (firstcharflags == REQ_UNSET) firstcharflags = REQ_NONE;
+        zerofirstchar = firstchar;
+        zerofirstcharflags = firstcharflags;
         continue;
 
 
@@ -8687,10 +8689,18 @@ do {
      if (!is_anchored(scode, new_map, cd, atomcount)) return FALSE;
      }
 
-   /* Positive forward assertions and conditions */
+   /* Positive forward assertion */
 
-   else if (op == OP_ASSERT || op == OP_COND)
+   else if (op == OP_ASSERT)
+     {
+     if (!is_anchored(scode, bracket_map, cd, atomcount)) return FALSE;
+     }
+
+   /* Condition; not anchored if no second branch */
+
+   else if (op == OP_COND)
      {
+     if (scode[GET(scode,1)] != OP_ALT) return FALSE;
      if (!is_anchored(scode, bracket_map, cd, atomcount)) return FALSE;
      }
 
diff --git a/deps/pcre/pcre_jit_compile.c b/deps/pcre/pcre_jit_compile.c
index 2bad74b02..bc5f9c014 100644
--- a/deps/pcre/pcre_jit_compile.c
+++ b/deps/pcre/pcre_jit_compile.c
@@ -9002,7 +9002,7 @@ if (exact > 1)
 #ifdef SUPPORT_UTF
       && !common->utf
 #endif
-      )
+      && type != OP_ANYNL && type != OP_EXTUNI)
     {
     OP2(SLJIT_ADD, TMP1, 0, STR_PTR, 0, SLJIT_IMM, IN_UCHARS(exact));
     add_jump(compiler, &backtrack->topbacktracks, CMP(SLJIT_GREATER, TMP1, 0, STR_END, 0));
-- 
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