From d9d04be3f0c0e86ce2cf1738a6b6544df3aecb75 Mon Sep 17 00:00:00 2001
From: Florian Weimer <fweimer@redhat.com>
Date: Thu, 16 May 2019 12:08:37 +0200
Subject: WIP Support exotic character sets in __fxprintf [BZ #24562]

This does not quite work because vfprintf has a similar
incorrect assumption.
---
 misc/tst-warn-wide-tscii.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 misc/tst-warn-wide-tscii.c

(limited to 'misc/tst-warn-wide-tscii.c')

diff --git a/misc/tst-warn-wide-tscii.c b/misc/tst-warn-wide-tscii.c
new file mode 100644
index 0000000000..d32ddcc97b
--- /dev/null
+++ b/misc/tst-warn-wide-tscii.c
@@ -0,0 +1,63 @@
+/* Test wide output conversion for warn with TSCII.
+   Copyright (C) 2019 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <err.h>
+#include <locale.h>
+#include <stdlib.h>
+#include <support/check.h>
+#include <support/temp_file.h>
+#include <support/xstdio.h>
+#include <support/xunistd.h>
+#include <wchar.h>
+
+static int
+do_test (void)
+{
+  if (setlocale (LC_ALL, "en_US.TSCII") == NULL)
+    FAIL_EXIT1 ("setlocale");
+
+  char *path;
+  xclose (create_temp_file ("tst-warn-wide-tscii-", &path));
+  FILE *fp = xfopen (path, "w,ccs=UTF-8");
+  TEST_COMPARE (fwide (fp, 0), 1);
+
+  FILE *old_stderr = stderr;
+  stderr = fp;
+
+  /* Special character that expands to four wide characters.  */
+  warnx ("[[\x8C]]");
+
+  stderr = old_stderr;
+
+  /* Verify that the expected data was written.  */
+  xfclose (fp);
+  fp = xfopen (path, "rb");
+  char line[1024];
+  TEST_VERIFY (fgets (line, sizeof (line), fp) != NULL);
+  TEST_COMPARE_STRING (line, "tst-warn-wide-tscii: [["
+                       "\xe0\xae\x95\xe0\xaf\x8d\xe0\xae\xb7\xe0\xaf\x8d]]\n");
+  TEST_COMPARE (fgetc (fp), EOF);
+  TEST_VERIFY (feof (fp));
+  TEST_VERIFY (!ferror (fp));
+
+  free (path);
+
+  return 0;
+}
+
+#include <support/test-driver.c>
-- 
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