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75 lines
1.5 KiB
C
75 lines
1.5 KiB
C
#define _XOPEN_SOURCE 500
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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 write_chars[] = "ABC"; /* Characters on testfile. */
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const wint_t unget_wchar = L'A'; /* Ungotten wide character. */
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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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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-ungetwc1.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-ungetwc1.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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setlocale(LC_ALL, "");
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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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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, "%s", write_chars);
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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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while (!feof (fp))
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wc = getwc (fp);
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printf ("\nThe end-of-file indicator is set.\n");
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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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/* Check the end-of-file indicator. */
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if (feof (fp))
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printf ("The end-of-file indicator is still set.\n");
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else
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printf ("The end-of-file flag is cleared.\n");
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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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