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#define _XOPEN_SOURCE 500
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#include <errno.h>
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#include <error.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <locale.h>
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#include <wchar.h>
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const char test_locale[] = "de_DE.UTF-8";
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const wchar_t write_wchars[] = {L'A', 0x00C4, L'B', L'\0'};
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/* `0x00C4' is A with diaeresis. */
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size_t last_pos = 2; /* Which character is last one to read. */
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wint_t unget_wchar = L'C'; /* Ungotten ide characters. */
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char *fname;
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static int do_test (void);
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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static int
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do_test (void)
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{
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size_t i;
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wint_t wc;
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FILE *fp;
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int fd;
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fname = (char *) malloc (strlen (test_dir) + sizeof "/bug-ungetwc2.XXXXXX");
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if (fname == NULL)
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{
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puts ("no memory");
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return 1;
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}
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strcpy (stpcpy (fname, test_dir), "/bug-ungetwc2.XXXXXX");
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fd = mkstemp (fname);
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if (fd == -1)
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{
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printf ("cannot open temporary file: %m\n");
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return 1;
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}
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add_temp_file (fname);
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printf ("\nNote: This program runs on %s locale.\n\n", test_locale);
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if (setlocale (LC_ALL, test_locale) == NULL)
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{
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fprintf (stderr, "Cannot use `%s' locale.\n", test_locale);
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exit (EXIT_FAILURE);
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}
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/* Output to the file. */
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if ((fp = fdopen (fd, "w")) == NULL)
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{
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setlocale (LC_ALL, "C");
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fprintf (stderr, "Cannot make `%s' file.\n", fname);
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exit (EXIT_FAILURE);
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}
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fprintf (fp, "%ls", write_wchars);
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fclose (fp);
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/* Read from the file. */
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fp = fopen (fname, "r");
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if (fp == NULL)
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{
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setlocale (LC_ALL, "C");
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error (EXIT_FAILURE, errno, "cannot open %s", fname);
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}
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printf ("%s is opened.\n", fname);
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for (i = 0; i < last_pos; i++)
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{
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wc = getwc (fp);
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printf ("> `%lc' is gotten.\n", wc);
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}
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/* Unget a wide character. */
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ungetwc (unget_wchar, fp);
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printf ("< `%lc' is ungotten.\n", unget_wchar);
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/* Reget the wide character. */
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wc = getwc (fp);
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printf ("> `%lc' is regotten.\n", wc);
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fflush (stdout);
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fclose (fp);
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return 0;
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}
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