1 files changed, 112 insertions, 0 deletions
diff --git a/REORG.TODO/libio/tst-freopen.c b/REORG.TODO/libio/tst-freopen.c
new file mode 100644
index 0000000000..5ad589bffa
--- /dev/null
+++ b/REORG.TODO/libio/tst-freopen.c
@@ -0,0 +1,112 @@
+/* Test freopen with mmap stdio.
+   Copyright (C) 2002-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
+
+   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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <support/check.h>
+#include <support/temp_file.h>
+
+static int fd;
+static char *name;
+
+static void
+do_prepare (int argc, char *argv[])
+{
+  fd = create_temp_file ("tst-freopen.", &name);
+  TEST_VERIFY_EXIT (fd != -1);
+}
+
+#define PREPARE do_prepare
+
+/* Basic tests for freopen.  */
+static void
+do_test_basic (void)
+{
+  const char * const test = "Let's test freopen.\n";
+  char temp[strlen (test) + 1];
+
+  FILE *f = fdopen (fd, "w");
+  if (f == NULL)
+    FAIL_EXIT1 ("fdopen: %m");
+
+  fputs (test, f);
+  fclose (f);
+
+  f = fopen (name, "r");
+  if (f == NULL)
+    FAIL_EXIT1 ("fopen: %m");
+
+  if (fread (temp, 1, strlen (test), f) != strlen (test))
+    FAIL_EXIT1 ("fread: %m");
+  temp [strlen (test)] = '\0';
+
+  if (strcmp (test, temp))
+    FAIL_EXIT1 ("read different string than was written: (%s, %s)",
+	        test, temp);
+
+  f = freopen (name, "r+", f);
+  if (f == NULL)
+    FAIL_EXIT1 ("freopen: %m");
+
+  if (fseek (f, 0, SEEK_SET) != 0)
+    FAIL_EXIT1 ("fseek: %m");
+
+  if (fread (temp, 1, strlen (test), f) != strlen (test))
+    FAIL_EXIT1 ("fread: %m");
+  temp [strlen (test)] = '\0';
+
+  if (strcmp (test, temp))
+    FAIL_EXIT1 ("read different string than was written: (%s, %s)",
+	        test, temp);
+
+  fclose (f);
+}
+
+/* Test for BZ#21398, where it tries to freopen stdio after the close
+   of its file descriptor.  */
+static void
+do_test_bz21398 (void)
+{
+  (void) close (STDIN_FILENO);
+
+  FILE *f = freopen (name, "r", stdin);
+  if (f == NULL)
+    FAIL_EXIT1 ("freopen: %m");
+
+  TEST_VERIFY_EXIT (ferror (f) == 0);
+
+  char buf[128];
+  char *ret = fgets (buf, sizeof (buf), stdin);
+  TEST_VERIFY_EXIT (ret != NULL);
+  TEST_VERIFY_EXIT (ferror (f) == 0);
+}
+
+static int
+do_test (void)
+{
+  do_test_basic ();
+  do_test_bz21398 ();
+
+  return 0;
+}
+
+#include <support/test-driver.c>