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authorUlrich Drepper <drepper@redhat.com>2001-08-09 08:50:50 +0000
committerUlrich Drepper <drepper@redhat.com>2001-08-09 08:50:50 +0000
commit40a982a9e1b825b175be7bc7c7199c6bdf363e4b (patch)
tree7523a21da3e35bed6e56133efbe1d16dadb6e6da /libio/tst-ungetwc2.c
parent0f78390bd799fc0b0394240a9a704591481ac8c6 (diff)
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Update.
2001-08-09 Ulrich Drepper <drepper@redhat.com> * libio/wfileops.c (_IO_wfile_seekoff): Don't even try to handle seeking with backup buffer present. Correct determining of internal buffer position. Reset also wide buffers if we reset the internal buffers. * libio/iofwide.c (_IO_fwide): Always determine file offset for wide streams. * libio/ioseekoff.c: Catch one unimplemented case. * libio/ftello.c: Don't abort if the wide stream has backup buffer. * libio/ftello64.c: Likewise. * libio/iofgetpos.c: Likewise. * libio/iofgetpos64.c: Likewise. * libio/ftell.c: Likewise. * libio/Makefile (tests): Add tst-ungetwc2. * libio/tst-ungetwc2.c: New file.
Diffstat (limited to 'libio/tst-ungetwc2.c')
-rw-r--r--libio/tst-ungetwc2.c81
1 files changed, 81 insertions, 0 deletions
diff --git a/libio/tst-ungetwc2.c b/libio/tst-ungetwc2.c
new file mode 100644
index 0000000000..9064427532
--- /dev/null
+++ b/libio/tst-ungetwc2.c
@@ -0,0 +1,81 @@
+/* Taken from the Li18nux base test suite. */
+
+#define _XOPEN_SOURCE 500
+#include <locale.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <wchar.h>
+
+int
+main (void)
+{
+ FILE *fp;
+ char *str = "abcdef";
+ wint_t ret, wc;
+ char fname[] = "/tmp/tst-ungetwc2.out.XXXXXX";
+ int fd;
+ long int pos;
+ int result = 0;
+
+ puts ("This program runs on en_US.UTF-8 locale.");
+ if (setlocale (LC_ALL, "en_US.UTF-8") == NULL)
+ {
+ fprintf (stderr, "Err: Cannot run on the en_US.UTF-8 locale\n");
+ exit (EXIT_FAILURE);
+ }
+
+ /* Write some characters to `testfile'. */
+ fd = mkstemp (fname);
+ if (fd == -1)
+ {
+ printf ("cannot open temp file: %m\n");
+ exit (EXIT_FAILURE);
+ }
+ if ((fp = fdopen (fd, "w")) == NULL)
+ {
+ fprintf (stderr, "Cannot open 'testfile'.\n");
+ exit (EXIT_FAILURE);
+ }
+ fputs (str, fp);
+ fclose (fp);
+
+ /* Open `testfile'. */
+ if ((fp = fopen (fname, "r")) == NULL)
+ {
+ fprintf (stderr, "Cannot open 'testfile'.");
+ exit (EXIT_FAILURE);
+ }
+
+ /* Get a character. */
+ wc = getwc (fp);
+ pos = ftell (fp);
+ printf ("After get a character: %ld\n", pos);
+ if (pos != 1)
+ result = 1;
+
+ /* Unget a character. */
+ ret = ungetwc (wc, fp);
+ if (ret == WEOF)
+ {
+ fprintf (stderr, "ungetwc() returns NULL.");
+ exit (EXIT_FAILURE);
+ }
+ pos = ftell (fp);
+ printf ("After unget a character: %ld\n", pos);
+ if (pos != 0)
+ result = 1;
+
+ /* Reget a character. */
+ wc = getwc (fp);
+ pos = ftell (fp);
+ printf ("After reget a character: %ld\n", pos);
+ if (pos != 1)
+ result = 1;
+
+ fclose (fp);
+
+ unlink (fname);
+
+ return result;
+}