--- embedaddon/libiconv/lib/iconv_open1.h	2012/02/21 22:57:48	1.1.1.1
+++ embedaddon/libiconv/lib/iconv_open1.h	2021/03/17 13:38:46	1.1.1.3
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 1999-2008 Free Software Foundation, Inc.
+ * Copyright (C) 1999-2008, 2011, 2018 Free Software Foundation, Inc.
  * This file is part of the GNU LIBICONV Library.
  *
  * The GNU LIBICONV Library is free software; you can redistribute it
@@ -14,8 +14,7 @@
  *
  * You should have received a copy of the GNU Library General Public
  * License along with the GNU LIBICONV Library; see the file COPYING.LIB.
- * If not, write to the Free Software Foundation, Inc., 51 Franklin Street,
- * Fifth Floor, Boston, MA 02110-1301, USA.
+ * If not, see <https://www.gnu.org/licenses/>.
  */
 
 /* Part 1 of iconv_open.
@@ -97,13 +96,27 @@
     }
     if (ap->encoding_index == ei_local_wchar_t) {
       /* On systems which define __STDC_ISO_10646__, wchar_t is Unicode.
-         This is also the case on native Woe32 systems.  */
-#if __STDC_ISO_10646__ || ((defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__)
+         This is also the case on native Woe32 systems and Cygwin >= 1.7, where
+         we know that it is UTF-16.  */
+#if (defined _WIN32 && !defined __CYGWIN__) || (defined __CYGWIN__ && CYGWIN_VERSION_DLL_MAJOR >= 1007)
       if (sizeof(wchar_t) == 4) {
         to_index = ei_ucs4internal;
         break;
       }
       if (sizeof(wchar_t) == 2) {
+# if WORDS_LITTLEENDIAN
+        to_index = ei_utf16le;
+# else
+        to_index = ei_utf16be;
+# endif
+        break;
+      }
+#elif __STDC_ISO_10646__
+      if (sizeof(wchar_t) == 4) {
+        to_index = ei_ucs4internal;
+        break;
+      }
+      if (sizeof(wchar_t) == 2) {
         to_index = ei_ucs2internal;
         break;
       }
@@ -173,8 +186,22 @@
     }
     if (ap->encoding_index == ei_local_wchar_t) {
       /* On systems which define __STDC_ISO_10646__, wchar_t is Unicode.
-         This is also the case on native Woe32 systems.  */
-#if __STDC_ISO_10646__ || ((defined _WIN32 || defined __WIN32__) && !defined __CYGWIN__)
+         This is also the case on native Woe32 systems and Cygwin >= 1.7, where
+         we know that it is UTF-16.  */
+#if (defined _WIN32 && !defined __CYGWIN__) || (defined __CYGWIN__ && CYGWIN_VERSION_DLL_MAJOR >= 1007)
+      if (sizeof(wchar_t) == 4) {
+        from_index = ei_ucs4internal;
+        break;
+      }
+      if (sizeof(wchar_t) == 2) {
+# if WORDS_LITTLEENDIAN
+        from_index = ei_utf16le;
+# else
+        from_index = ei_utf16be;
+# endif
+        break;
+      }
+#elif __STDC_ISO_10646__
       if (sizeof(wchar_t) == 4) {
         from_index = ei_ucs4internal;
         break;