--- embedaddon/libiconv/lib/loop_wchar.h	2012/02/21 22:57:48	1.1.1.1
+++ embedaddon/libiconv/lib/loop_wchar.h	2021/03/17 13:38:46	1.1.1.3
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2000-2002, 2005-2006, 2008 Free Software Foundation, Inc.
+ * Copyright (C) 2000-2002, 2005-2006, 2008-2009, 2011 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/>.
  */
 
 /* This file defines three conversion loops:
@@ -25,6 +24,15 @@
  */
 
 #if HAVE_WCRTOMB || HAVE_MBRTOWC
+/* Tru64 with Desktop Toolkit C has a bug: <stdio.h> must be included before
+   <wchar.h>.
+   BSD/OS 4.0.1 has a bug: <stddef.h>, <stdio.h> and <time.h> must be
+   included before <wchar.h>.
+   In some builds of uClibc, <wchar.h> is nonexistent and wchar_t is defined
+   by <stddef.h>.  */
+# include <stddef.h>
+# include <stdio.h>
+# include <time.h>
 # include <wchar.h>
 # define BUF_SIZE 64  /* assume MB_LEN_MAX <= 64 */
   /* Some systems, like BeOS, have multibyte encodings but lack mbstate_t.  */
@@ -321,7 +329,8 @@ static size_t wchar_to_loop_convert (iconv_t icd,
   size_t result = 0;
   while (*inbytesleft > 0) {
     size_t incount;
-    for (incount = 1; incount <= *inbytesleft; incount++) {
+    for (incount = 1; ; ) {
+      /* Here incount <= *inbytesleft. */
       char buf[BUF_SIZE];
       const char* inptr = *inbuf;
       size_t inleft = incount;
@@ -402,6 +411,12 @@ static size_t wchar_to_loop_convert (iconv_t icd,
           result += res;
           break;
         }
+      }
+      incount++;
+      if (incount > *inbytesleft) {
+        /* Incomplete input. */
+        errno = EINVAL;
+        return -1;
       }
     }
   }