Test POSIX 1003.1 2016 chapter 13 "Headers".

And fix one thing that this found: apparently <stdlib.h> should also
make the various *WAIT* macros available.

Bug: N/A
Test: builds
Change-Id: Id879bf3c1bddd1170261a809e7280150a74d6b3d
diff --git a/tests/headers/posix/dirent_h.c b/tests/headers/posix/dirent_h.c
new file mode 100644
index 0000000..6c61c8d
--- /dev/null
+++ b/tests/headers/posix/dirent_h.c
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2017 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <dirent.h>
+
+#include "header_checks.h"
+
+static void dirent_h() {
+  INCOMPLETE_TYPE(DIR);
+
+  TYPE(struct dirent);
+#if defined(__BIONIC__) && !defined(__LP64__)
+  STRUCT_MEMBER(struct dirent, uint64_t, d_ino); // Historical ABI accident.
+#else
+  STRUCT_MEMBER(struct dirent, ino_t, d_ino);
+#endif
+  STRUCT_MEMBER_ARRAY(struct dirent, char/*[]*/, d_name);
+
+  TYPE(ino_t);
+
+  FUNCTION(alphasort, int (*f)(const struct dirent**, const struct dirent**));
+  FUNCTION(closedir, int (*f)(DIR*));
+  FUNCTION(dirfd, int (*f)(DIR*));
+  FUNCTION(fdopendir, DIR* (*f)(int));
+  FUNCTION(opendir, DIR* (*f)(const char*));
+  FUNCTION(readdir, struct dirent* (*f)(DIR*));
+  FUNCTION(readdir_r, int (*f)(DIR*, struct dirent*, struct dirent**));
+  FUNCTION(rewinddir, void (*f)(DIR*));
+  FUNCTION(scandir, int (*f)(const char*, struct dirent***,
+                             int (*)(const struct dirent*),
+                             int (*)(const struct dirent**, const struct dirent**)));
+  FUNCTION(seekdir, void (*f)(DIR*, long));
+  FUNCTION(telldir, long (*f)(DIR*));
+}