--- embedaddon/libiconv/src/iconv.c	2012/02/21 22:57:48	1.1
+++ embedaddon/libiconv/src/iconv.c	2021/03/17 13:38:46	1.1.1.3
@@ -1,4 +1,4 @@
-/* Copyright (C) 2000-2009 Free Software Foundation, Inc.
+/* Copyright (C) 2000-2009, 2011-2012, 2016-2019 Free Software Foundation, Inc.
    This file is part of the GNU LIBICONV Library.
 
    This program is free software: you can redistribute it and/or modify
@@ -12,7 +12,7 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
 
 #include "config.h"
 #ifndef ICONV_CONST
@@ -38,6 +38,7 @@
 #include "binary-io.h"
 #include "progname.h"
 #include "relocatable.h"
+#include "safe-read.h"
 #include "xalloc.h"
 #include "uniwidth.h"
 #include "uniwidth/cjk.h"
@@ -106,7 +107,7 @@ static void usage (int exitcode)
          Align it correctly against the first line.  */
       _("or:    iconv -l");
     fprintf(stderr, "%s\n%s\n", helpstring1, helpstring2);
-    fprintf(stderr, _("Try `%s --help' for more information.\n"), program_name);
+    fprintf(stderr, _("Try '%s --help' for more information.\n"), program_name);
   } else {
     /* xgettext: no-wrap */
     /* TRANSLATORS: The first line of the long usage message.
@@ -190,10 +191,10 @@ static void print_version (void)
 {
   printf("iconv (GNU libiconv %d.%d)\n",
          _libiconv_version >> 8, _libiconv_version & 0xff);
-  printf("Copyright (C) %s Free Software Foundation, Inc.\n", "2000-2009");
+  printf("Copyright (C) %s Free Software Foundation, Inc.\n", "2000-2019");
   /* xgettext: no-wrap */
   fputs (_("\
-License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n\
+License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>\n\
 This is free software: you are free to change and redistribute it.\n\
 There is NO WARRANTY, to the extent permitted by law.\n\
 "),stdout);
@@ -667,23 +668,29 @@ static void conversion_error_other (int errnum, const 
 
 /* Convert the input given in infile.  */
 
-static int convert (iconv_t cd, FILE* infile, const char* infilename)
+static int convert (iconv_t cd, int infile, const char* infilename)
 {
   char inbuf[4096+4096];
   size_t inbufrest = 0;
+  int infile_error = 0;
   char initial_outbuf[4096];
   char *outbuf = initial_outbuf;
   size_t outbufsize = sizeof(initial_outbuf);
   int status = 0;
 
 #if O_BINARY
-  SET_BINARY(fileno(infile));
+  SET_BINARY(infile);
 #endif
   line = 1; column = 0;
   iconv(cd,NULL,NULL,NULL,NULL);
   for (;;) {
-    size_t inbufsize = fread(inbuf+4096,1,4096,infile);
-    if (inbufsize == 0) {
+    size_t inbufsize;
+    /* Transfer the accumulated output to its destination, in case the
+       safe_read() call will block. */
+    fflush(stdout);
+    inbufsize = safe_read(infile,inbuf+4096,4096);
+    if (inbufsize == 0 || inbufsize == SAFE_READ_ERROR) {
+      infile_error = (inbufsize == SAFE_READ_ERROR ? errno : 0);
       if (inbufrest == 0)
         break;
       else {
@@ -809,11 +816,11 @@ static int convert (iconv_t cd, FILE* infile, const ch
     } else
       break;
   }
-  if (ferror(infile)) {
+  if (infile_error) {
     fflush(stdout);
     if (column > 0)
       putc('\n',stderr);
-    error(0,0,
+    error(0,infile_error,
           /* TRANSLATORS: An error message.
              The placeholder expands to the input file name.  */
           _("%s: I/O error"),
@@ -854,6 +861,15 @@ int main (int argc, char* argv[])
   bindtextdomain("libiconv",relocate(LOCALEDIR));
 #endif
   textdomain("libiconv");
+  /* No need to invoke the gnulib function stdopen() here, because
+     (1) the only file descriptor allocations done by this program are
+         fopen(...,"r"),
+     (2) when such fopen() calls occur, stdin is not used,
+     hence
+     - when an fopen() call happens to open fd 0, it is harmless, by (2),
+     - when an fopen() call happens to open fd 1 or 2, writing to
+       stdout or stderr will produce an error, by (1). */
+
   for (i = 1; i < argc;) {
     size_t len = strlen(argv[i]);
     if (!strcmp(argv[i],"--")) {
@@ -952,6 +968,7 @@ int main (int argc, char* argv[])
     if /* --s ... --silent */
        (len >= 3 && len <= 8 && !strncmp(argv[i],"--silent",len)) {
       silent = 1;
+      i++;
       continue;
     }
     if /* --h ... --help */
@@ -1076,7 +1093,7 @@ int main (int argc, char* argv[])
     hooks.data = NULL;
     iconvctl(cd, ICONV_SET_HOOKS, &hooks);
     if (i == argc)
-      status = convert(cd,stdin,
+      status = convert(cd,fileno(stdin),
                        /* TRANSLATORS: A filename substitute denoting standard input.  */
                        _("(stdin)"));
     else {
@@ -1094,7 +1111,7 @@ int main (int argc, char* argv[])
                 infilename);
           status = 1;
         } else {
-          status |= convert(cd,infile,infilename);
+          status |= convert(cd,fileno(infile),infilename);
           fclose(infile);
         }
       }