--- /dev/null
+/* Test of <threads.h> substitute in C++ mode.
+ Copyright (C) 2019 Free Software Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2019. */
+
+#define GNULIB_NAMESPACE gnulib
+#include <config.h>
+
+#include <threads.h>
+
+#include "signature.h"
+
+
+#if GNULIB_TEST_THRD
+SIGNATURE_CHECK (GNULIB_NAMESPACE::thrd_create, int,
+ (thrd_t *, thrd_start_t, void *));
+SIGNATURE_CHECK (GNULIB_NAMESPACE::thrd_current, thrd_t, (void));
+SIGNATURE_CHECK (GNULIB_NAMESPACE::thrd_equal, int, (thrd_t, thrd_t));
+SIGNATURE_CHECK (GNULIB_NAMESPACE::thrd_sleep, int,
+ (const struct timespec *, struct timespec *));
+SIGNATURE_CHECK (GNULIB_NAMESPACE::thrd_yield, void, (void));
+SIGNATURE_CHECK (GNULIB_NAMESPACE::thrd_detach, int, (thrd_t));
+SIGNATURE_CHECK (GNULIB_NAMESPACE::thrd_join, int, (thrd_t, int *));
+SIGNATURE_CHECK (GNULIB_NAMESPACE::thrd_exit, _Noreturn void, (int));
+#endif
+
+#if GNULIB_TEST_MTX
+SIGNATURE_CHECK (GNULIB_NAMESPACE::mtx_init, int, (mtx *, int));
+SIGNATURE_CHECK (GNULIB_NAMESPACE::mtx_lock, int, (mtx *));
+SIGNATURE_CHECK (GNULIB_NAMESPACE::mtx_trylock, int, (mtx *));
+SIGNATURE_CHECK (GNULIB_NAMESPACE::mtx_timedlock, int,
+ (mtx *, const struct timespec *));
+SIGNATURE_CHECK (GNULIB_NAMESPACE::mtx_unlock, int, (mtx *));
+SIGNATURE_CHECK (GNULIB_NAMESPACE::mtx_destroy, void, (mtx *));
+SIGNATURE_CHECK (GNULIB_NAMESPACE::call_once, void,
+ (once_flag *, void (*) (void)));
+#endif
+
+#if GNULIB_TEST_CND
+SIGNATURE_CHECK (GNULIB_NAMESPACE::cnd_init, int, (cnd_t *));
+SIGNATURE_CHECK (GNULIB_NAMESPACE::cnd_wait, int, (cnd_t *, mtx_t *));
+SIGNATURE_CHECK (GNULIB_NAMESPACE::cnd_timedwait, int,
+ (cnd_t *, mtx_t *, const struct timespec *));
+SIGNATURE_CHECK (GNULIB_NAMESPACE::cnd_signal, int, (cnd_t *));
+SIGNATURE_CHECK (GNULIB_NAMESPACE::cnd_broadcast, int, (cnd_t *));
+SIGNATURE_CHECK (GNULIB_NAMESPACE::cnd_destroy, void, (cnd_t *));
+#endif
+
+#if GNULIB_TEST_TSS
+SIGNATURE_CHECK (GNULIB_NAMESPACE::tss_create, int, (tss_t *, tss_dtor_t));
+SIGNATURE_CHECK (GNULIB_NAMESPACE::tss_set, int, (tss_t, void *));
+SIGNATURE_CHECK (GNULIB_NAMESPACE::tss_get, void *, (tss_t));
+SIGNATURE_CHECK (GNULIB_NAMESPACE::tss_delete, void, (tss_t));
+#endif
+
+
+int
+main ()
+{
+}
--- /dev/null
+/* Test of <threads.h> substitute.
+ Copyright (C) 2019 Free Software Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <https://www.gnu.org/licenses/>. */
+
+/* Written by Bruno Haible <bruno@clisp.org>, 2019. */
+
+#include <config.h>
+
+#include <threads.h>
+
+/* Check that thread_local is defined. */
+#ifndef thread_local
+"oops"
+#endif
+
+/* Check that ONCE_FLAG_INIT is defined. */
+#ifndef ONCE_FLAG_INIT
+"oops1"
+#endif
+once_flag a = ONCE_FLAG_INIT;
+
+/* Check that TSS_DTOR_ITERATIONS is defined. */
+#ifndef TSS_DTOR_ITERATIONS
+"oops2"
+#endif
+int b = TSS_DTOR_ITERATIONS;
+
+int
+main (void)
+{
+ /* Ensure no overlap in thrd_*. */
+ switch (0)
+ {
+ case thrd_success:
+ case thrd_timedout:
+ case thrd_busy:
+ case thrd_nomem:
+ case thrd_error:
+ ;
+ }
+
+ /* Ensure no overlap among valid types for mtx_init. */
+ switch (0)
+ {
+ case mtx_plain:
+ case mtx_timed:
+ case mtx_plain | mtx_recursive:
+ case mtx_timed | mtx_recursive:
+ ;
+ }
+
+ return 0;
+}