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libio: Update tst-wfile-sync to not depend on stdin

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The test expects stdin to be a file which is not the case when running
tests over ssh where stdin is piped in.

The test fails with:
  error: xlseek.c:27: lseek64 (0, 0, 1): Illegal seek

Update the test to create a temporary file and use that to perform the
test.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
This commit is contained in:
Stafford Horne 2021-10-06 08:31:12 +09:00 committed by Adhemerval Zanella
parent 171ab1af56
commit 8faa1e0449
2 changed files with 24 additions and 4 deletions
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27
libio/tst-wfile-sync.c
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@ -16,22 +16,43 @@
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <fcntl.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <wchar.h>
#include <support/check.h>
#include <support/xstdio.h>
#include <support/xunistd.h>
#include <support/temp_file.h>
static const char test_data[] = "This is a test of _IO_wfile_sync.";
static int
do_test (void)
{
static char *infile;
int infd;
FILE *infp;
infd = create_temp_file ("tst-wfile-sync-in-", &infile);
xwrite (infd, test_data, strlen (test_data));
xclose (infd);
infd = xopen (infile, O_RDONLY, 0);
infp = fdopen (infd, "r");
TEST_VERIFY_EXIT (setlocale (LC_ALL, "de_DE.UTF-8") != NULL);
/* Fill the stdio buffer and advance the read pointer. */
TEST_VERIFY_EXIT (fgetwc (stdin) != WEOF);
TEST_VERIFY_EXIT (fgetwc (infp) != WEOF);
/* This calls _IO_wfile_sync, it should not crash. */
TEST_VERIFY_EXIT (setvbuf (stdin, NULL, _IONBF, 0) == 0);
TEST_VERIFY_EXIT (setvbuf (infp, NULL, _IONBF, 0) == 0);
/* Verify that the external file offset has been synchronized. */
TEST_COMPARE (xlseek (0, 0, SEEK_CUR), 1);
TEST_COMPARE (xlseek (infd, 0, SEEK_CUR), 1);
fclose (infp);
free (infile);
return 0;
}

1
libio/tst-wfile-sync.input
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@ -1 +0,0 @@
This is a test of _IO_wfile_sync.