Patch-Source: https://github.com/libexpat/libexpat/commit/d477fdd284468f2ab822024e75702f2c1b254f42
From efcb347440ade24b9f1054671e6bd05e60b4cafd Mon Sep 17 00:00:00 2001
From: Samanta Navarro <ferivoz@riseup.net>
Date: Tue, 15 Feb 2022 11:56:57 +0000
Subject: [PATCH] Prevent integer overflow in copyString

The copyString function is only used for encoding string supplied by
the library user.
---
 expat/lib/xmlparse.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/lib/xmlparse.c
+++ b/lib/xmlparse.c
@@ -7149,7 +7149,7 @@ getElementType(XML_Parser parser, const
 
 static XML_Char *
 copyString(const XML_Char *s, const XML_Memory_Handling_Suite *memsuite) {
-  int charsRequired = 0;
+  size_t charsRequired = 0;
   XML_Char *result;
 
   /* First determine how long the string is */