1 files changed, 66 insertions, 0 deletions
diff --git a/io/tst-getcwd-abspath.c b/io/tst-getcwd-abspath.c
new file mode 100644
index 0000000000..3a3636f2ed
--- /dev/null
+++ b/io/tst-getcwd-abspath.c
@@ -0,0 +1,66 @@
+/* BZ #22679 getcwd(3) should not succeed without returning an absolute path.
+
+   Copyright (C) 2018 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
+   <https://www.gnu.org/licenses/>.  */
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <support/check.h>
+#include <support/namespace.h>
+#include <support/support.h>
+#include <support/temp_file.h>
+#include <support/test-driver.h>
+#include <support/xunistd.h>
+#include <unistd.h>
+
+static char *chroot_dir;
+
+/* The actual test.  Run it in a subprocess, so that the test harness
+   can remove the temporary directory in --direct mode.  */
+static void
+getcwd_callback (void *closure)
+{
+  xchroot (chroot_dir);
+
+  errno = 0;
+  char *cwd = getcwd (NULL, 0);
+  TEST_COMPARE (errno, ENOENT);
+  TEST_VERIFY (cwd == NULL);
+
+  errno = 0;
+  cwd = realpath (".", NULL);
+  TEST_COMPARE (errno, ENOENT);
+  TEST_VERIFY (cwd == NULL);
+
+  _exit (0);
+}
+
+static int
+do_test (void)
+{
+  support_become_root ();
+  if (!support_can_chroot ())
+    return EXIT_UNSUPPORTED;
+
+  chroot_dir = support_create_temp_directory ("tst-getcwd-abspath-");
+  support_isolate_in_subprocess (getcwd_callback, NULL);
+
+  return 0;
+}
+
+#include <support/test-driver.c>