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#define _XOPEN_SOURCE 500
#include <stdio.h>
#include <stdlib.h>
#include <locale.h>
#include <wchar.h>
const char write_chars[] = "ABC"; /* Characters on testfile. */
const wint_t unget_wchar = L'A'; /* Ungotten wide character. */
char *fname;
static int do_test (void);
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
static int
do_test (void)
{
wint_t wc;
FILE *fp;
int fd;
fname = (char *) malloc (strlen (test_dir) + sizeof "/bug-ungetwc1.XXXXXX");
if (fname == NULL)
{
puts ("no memory");
return 1;
}
strcpy (stpcpy (fname, test_dir), "/bug-ungetwc1.XXXXXX");
fd = mkstemp (fname);
if (fd == -1)
{
printf ("cannot open temporary file: %m\n");
return 1;
}
add_temp_file (fname);
setlocale(LC_ALL, "");
/* Output to the file. */
if ((fp = fdopen (fd, "w")) == NULL)
{
fprintf (stderr, "Cannot make `%s' file\n", fname);
exit (EXIT_FAILURE);
}
fprintf (fp, "%s", write_chars);
fclose (fp);
/* Read from the file. */
fp = fopen (fname, "r");
size_t i = 0;
while (!feof (fp))
{
wc = getwc (fp);
if (i >= sizeof (write_chars))
{
printf ("Did not get end-of-file when expected.\n");
return 1;
}
else if (wc != (write_chars[i] ? write_chars[i] : WEOF))
{
printf ("Unexpected %lu from getwc.\n", (unsigned long int) wc);
return 1;
}
i++;
}
printf ("\nThe end-of-file indicator is set.\n");
/* Unget a wide character. */
ungetwc (unget_wchar, fp);
printf ("< `%lc' is ungotten.\n", unget_wchar);
/* Check the end-of-file indicator. */
if (feof (fp))
{
printf ("The end-of-file indicator is still set.\n");
return 1;
}
else
printf ("The end-of-file flag is cleared.\n");
fflush (stdout);
fclose (fp);
return 0;
}
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