From d54d6fffba57bd417e31ab33230cbc490142bf03 Mon Sep 17 00:00:00 2001
From: Chris Liddell <chris.liddell@artifex.com>
Date: Tue, 11 Oct 2022 16:50:30 +0100
Subject: Tweaks for expat 2.4.9 to build on Windows.

---
 expat/expat_config.h | 22 ++++++++++++++++++----
 expat/lib/siphash.h  |  2 ++
 expat/lib/xmlparse.c |  7 +++++--
 expat/lib/xmltok.c   |  5 +++++
 4 files changed, 30 insertions(+), 6 deletions(-)

(limited to 'expat')

diff --git a/expat/expat_config.h b/expat/expat_config.h
index 7842c262c..f64037ac6 100644
--- a/expat/expat_config.h
+++ b/expat/expat_config.h
@@ -23,7 +23,7 @@
 #define HAVE_GETPAGESIZE 1
 
 /* Define to 1 if you have the `getrandom' function. */
-#define HAVE_GETRANDOM 1
+/*#define HAVE_GETRANDOM 1*/
 
 /* Define to 1 if you have the <inttypes.h> header file. */
 #define HAVE_INTTYPES_H 1
@@ -35,7 +35,21 @@
 #define HAVE_MMAP 1
 
 /* Define to 1 if you have the <stdint.h> header file. */
-#define HAVE_STDINT_H 1
+/*#define HAVE_STDINT_H 1*/
+# if defined(__WIN32__) /* MSVC currently doesn't provide C99 headers */
+   typedef signed char             int8_t;
+   typedef short int               int16_t;
+   typedef int                     int32_t;
+   typedef __int64                 int64_t;
+   typedef unsigned char           uint8_t;
+   typedef unsigned short int      uint16_t;
+   typedef unsigned int            uint32_t;
+   typedef unsigned __int64        uint64_t;
+   typedef unsigned char uint8_t;
+   typedef unsigned short uint16_t;
+   typedef unsigned int uint32_t;
+   typedef unsigned long long uint64_t;
+#endif
 
 /* Define to 1 if you have the <stdio.h> header file. */
 #define HAVE_STDIO_H 1
@@ -50,7 +64,7 @@
 #define HAVE_STRING_H 1
 
 /* Define to 1 if you have `syscall' and `SYS_getrandom'. */
-#define HAVE_SYSCALL_GETRANDOM 1
+/*#define HAVE_SYSCALL_GETRANDOM 1*/
 
 /* Define to 1 if you have the <sys/param.h> header file. */
 #define HAVE_SYS_PARAM_H 1
@@ -117,7 +131,7 @@
 #define XML_CONTEXT_BYTES 1024
 
 /* Define to include code reading entropy from `/dev/urandom'. */
-#define XML_DEV_URANDOM 1
+/*#define XML_DEV_URANDOM 1*/
 
 /* Define to make parameter entity parsing functionality available. */
 #define XML_DTD 1
diff --git a/expat/lib/siphash.h b/expat/lib/siphash.h
index 303283ad2..b1cff17eb 100644
--- a/expat/lib/siphash.h
+++ b/expat/lib/siphash.h
@@ -99,7 +99,9 @@
 #define SIPHASH_H
 
 #include <stddef.h> /* size_t */
+#ifdef HAVE_STDINT_H
 #include <stdint.h> /* uint64_t uint32_t uint8_t */
+#endif
 
 /*
  * Workaround to not require a C++11 compiler for using ULL suffix
diff --git a/expat/lib/xmlparse.c b/expat/lib/xmlparse.c
index b89d7ed22..db1f26083 100644
--- a/expat/lib/xmlparse.c
+++ b/expat/lib/xmlparse.c
@@ -78,7 +78,9 @@
 #include <limits.h> /* UINT_MAX */
 #include <stdio.h>  /* fprintf */
 #include <stdlib.h> /* getenv, rand_s */
+#ifdef HAVE_STDINT_H
 #include <stdint.h> /* uintptr_t */
+#endif
 #include <math.h>   /* isnan */
 
 #ifdef _WIN32
@@ -2533,7 +2535,7 @@ XML_Bool XMLCALL
 XML_SetBillionLaughsAttackProtectionMaximumAmplification(
     XML_Parser parser, float maximumAmplificationFactor) {
   if ((parser == NULL) || (parser->m_parentParser != NULL)
-      || isnan(maximumAmplificationFactor)
+/*      || isnan(maximumAmplificationFactor) */
       || (maximumAmplificationFactor < 1.0f)) {
     return XML_FALSE;
   }
@@ -5283,6 +5285,7 @@ doProlog(XML_Parser parser, const ENCODING *enc, const char *s, const char *end,
     case XML_ROLE_GROUP_OPEN:
       if (parser->m_prologState.level >= parser->m_groupSize) {
         char *new_connector;
+        int *new_scaff_index;
         if (parser->m_groupSize) {
           {
             /* Detect and prevent integer overflow */
@@ -5310,7 +5313,7 @@ doProlog(XML_Parser parser, const ENCODING *enc, const char *s, const char *end,
             }
 #endif
 
-            int *const new_scaff_index = (int *)REALLOC(
+            new_scaff_index = (int *)REALLOC(
                 parser, dtd->scaffIndex, parser->m_groupSize * sizeof(int));
             if (new_scaff_index == NULL)
               return XML_ERROR_NO_MEMORY;
diff --git a/expat/lib/xmltok.c b/expat/lib/xmltok.c
index 2b7012a58..9f857b3d0 100644
--- a/expat/lib/xmltok.c
+++ b/expat/lib/xmltok.c
@@ -48,7 +48,12 @@
 
 #include <stddef.h>
 #include <string.h> /* memcpy */
+#if 0
 #include <stdbool.h>
+#endif
+typedef int bool;
+#define true 1
+#define false 0
 
 #ifdef _WIN32
 #  include "winconfig.h"
-- 
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