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/errno_h.c b/tests/headers/posix/errno_h.c
new file mode 100644
index 0000000..9eabfd5
--- /dev/null
+++ b/tests/headers/posix/errno_h.c
@@ -0,0 +1,116 @@
+/*
+ * 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 <errno.h>
+
+#include "header_checks.h"
+
+static void errno_h() {
+  int error = errno;
+
+  MACRO(E2BIG);
+  MACRO(EACCES);
+  MACRO(EADDRINUSE);
+  MACRO(EADDRNOTAVAIL);
+  MACRO(EAFNOSUPPORT);
+  MACRO(EAGAIN);
+  MACRO(EALREADY);
+  MACRO(EBADF);
+  MACRO(EBADMSG);
+  MACRO(EBUSY);
+  MACRO(ECANCELED);
+  MACRO(ECHILD);
+  MACRO(ECONNABORTED);
+  MACRO(ECONNRESET);
+  MACRO(EDEADLK);
+  MACRO(EDESTADDRREQ);
+  MACRO(EDOM);
+  MACRO(EDQUOT);
+  MACRO(EEXIST);
+  MACRO(EFAULT);
+  MACRO(EFBIG);
+  MACRO(EHOSTUNREACH);
+  MACRO(EIDRM);
+  MACRO(EILSEQ);
+  MACRO(EINPROGRESS);
+  MACRO(EINTR);
+  MACRO(EINVAL);
+  MACRO(EIO);
+  MACRO(EISCONN);
+  MACRO(EISDIR);
+  MACRO(ELOOP);
+  MACRO(EMFILE);
+  MACRO(EMLINK);
+  MACRO(EMSGSIZE);
+  MACRO(EMULTIHOP);
+  MACRO(ENAMETOOLONG);
+  MACRO(ENETDOWN);
+  MACRO(ENETRESET);
+  MACRO(ENETUNREACH);
+  MACRO(ENFILE);
+  MACRO(ENOBUFS);
+  MACRO(ENODATA);
+  MACRO(ENODEV);
+  MACRO(ENOENT);
+  MACRO(ENOEXEC);
+  MACRO(ENOLCK);
+  MACRO(ENOLINK);
+  MACRO(ENOMEM);
+  MACRO(ENOMSG);
+  MACRO(ENOPROTOOPT);
+  MACRO(ENOSPC);
+  MACRO(ENOSR);
+  MACRO(ENOSTR);
+  MACRO(ENOSYS);
+  MACRO(ENOTCONN);
+  MACRO(ENOTDIR);
+  MACRO(ENOTEMPTY);
+  MACRO(ENOTRECOVERABLE);
+  MACRO(ENOTSOCK);
+  MACRO(ENOTSUP);
+  MACRO(ENOTTY);
+  MACRO(ENXIO);
+  MACRO(EOPNOTSUPP);
+  MACRO(EOVERFLOW);
+  MACRO(EOWNERDEAD);
+  MACRO(EPERM);
+  MACRO(EPIPE);
+  MACRO(EPROTO);
+  MACRO(EPROTONOSUPPORT);
+  MACRO(EPROTOTYPE);
+  MACRO(ERANGE);
+  MACRO(EROFS);
+  MACRO(ESPIPE);
+  MACRO(ESRCH);
+  MACRO(ESTALE);
+  MACRO(ETIME);
+  MACRO(ETIMEDOUT);
+  MACRO(ETXTBSY);
+  MACRO(EWOULDBLOCK);
+  MACRO(EXDEV);
+}