1 files changed, 81 insertions, 0 deletions
diff --git a/libio/tst-bz24051.c b/libio/tst-bz24051.c
new file mode 100644
index 0000000000..cf0dc8024e
--- /dev/null
+++ b/libio/tst-bz24051.c
@@ -0,0 +1,81 @@
+/* Test that assigning to stdout redirects puts, putchar, etc (BZ#24051)
+   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/>.  */
+
+
+/* Prevent putchar -> _IO_putc inline expansion.  */
+#define __NO_INLINE__
+#pragma GCC optimize("O0")
+
+#include <stdio.h>
+#include <string.h>
+#include <wchar.h>
+
+#include <array_length.h>
+#include <support/check.h>
+#include <support/temp_file.h>
+#include <support/test-driver.h>
+
+#undef putchar
+#undef putwchar
+
+static int
+do_test_narrow (void)
+{
+  char buf[100];
+  int fd = create_temp_file ("tst-bz24051", NULL);
+  stdout = fdopen (fd, "w+");
+  TEST_VERIFY_EXIT (stdout != NULL);
+
+  printf ("ab%s", "cd");
+  putchar ('e');
+  putchar_unlocked ('f');
+  puts ("ghi");
+
+  rewind (stdout);
+  TEST_VERIFY_EXIT (fgets (buf, sizeof (buf), stdout) != NULL);
+  TEST_VERIFY (strcmp (buf, "abcdefghi\n") == 0);
+
+  return 0;
+}
+
+static int
+do_test_wide (void)
+{
+  wchar_t buf[100];
+  int fd = create_temp_file ("tst-bz24051w", NULL);
+  stdout = fdopen (fd, "w+");
+  TEST_VERIFY_EXIT (stdout != NULL);
+
+  wprintf (L"ab%ls", L"cd");
+  putwchar (L'e');
+  putwchar_unlocked (L'f');
+
+  rewind (stdout);
+  TEST_VERIFY_EXIT (fgetws (buf, array_length (buf), stdout) != NULL);
+  TEST_VERIFY (wcscmp (buf, L"abcdef") == 0);
+
+  return 0;
+}
+
+static int
+do_test (void)
+{
+  return do_test_narrow () + do_test_wide ();
+}
+
+#include <support/test-driver.c>