1 files changed, 124 insertions, 0 deletions
diff --git a/REORG.TODO/io/bug-ftw4.c b/REORG.TODO/io/bug-ftw4.c
new file mode 100644
index 0000000000..9fca638937
--- /dev/null
+++ b/REORG.TODO/io/bug-ftw4.c
@@ -0,0 +1,124 @@
+/* Test if ftw function doesn't leak fds.
+   Copyright (C) 2003-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
+
+   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 <fcntl.h>
+#include <ftw.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+
+static int cb_called;
+
+static int
+cb (const char *name, const struct stat64 *st, int type)
+{
+  return cb_called++ & 1;
+}
+
+int
+main (void)
+{
+  char name[32] = "/tmp/ftwXXXXXX", *p;
+  int ret, i, result = 0, fd, fd1, fd2;
+
+  if (mkdtemp (name) == NULL)
+    {
+      printf ("Couldn't make temporary directory: %m\n");
+      exit (EXIT_FAILURE);
+    }
+  p = strchr (name, '\0');
+  strcpy (p, "/1");
+  if (mkdir (name, 0755) < 0)
+    {
+      printf ("Couldn't make temporary subdirectory: %m\n");
+      exit (EXIT_FAILURE);
+    }
+  *p = '\0';
+
+  ret = ftw64 (name, cb, 20);
+  if (ret != 1)
+    {
+      printf ("ftw64 returned %d instead of 1", ret);
+      result = 1;
+    }
+
+  fd = open (name, O_RDONLY);
+  if (fd < 0)
+    {
+      printf ("open failed: %m\n");
+      result = 1;
+    }
+  fd1 = open (name, O_RDONLY);
+  if (fd1 < 0)
+    {
+      printf ("open failed: %m\n");
+      result = 1;
+    }
+  else
+    close (fd1);
+  if (fd >= 0)
+    close (fd);
+
+  for (i = 0; i < 128; ++i)
+    {
+      ret = ftw64 (name, cb, 20);
+      if (ret != 1)
+	{
+	  printf ("ftw64 returned %d instead of 1", ret);
+	  result = 1;
+	}
+    }
+
+  fd = open (name, O_RDONLY);
+  if (fd < 0)
+    {
+      printf ("open failed: %m\n");
+      result = 1;
+    }
+  fd2 = open (name, O_RDONLY);
+  if (fd2 < 0)
+    {
+      printf ("open failed: %m\n");
+      result = 1;
+    }
+  else
+    close (fd2);
+  if (fd >= 0)
+    close (fd);
+
+  if (fd2 >= fd1 + 128)
+    {
+      printf ("ftw64 leaking fds: %d -> %d\n", fd1, fd2);
+      result = 1;
+    }
+
+  if (cb_called != 129 * 2)
+    {
+      printf ("callback called %d times\n", cb_called);
+      result = 1;
+    }
+
+  strcpy (p, "/1");
+  rmdir (name);
+  *p = '\0';
+  rmdir (name);
+  return result;
+}