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-rw-r--r--tests/test-setlocale_null-mt-all.c172
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diff --git a/tests/test-setlocale_null-mt-all.c b/tests/test-setlocale_null-mt-all.c
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+++ b/tests/test-setlocale_null-mt-all.c
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+/* Multithread-safety test for setlocale_null_r (LC_ALL, ...).
+ Copyright (C) 2019-2022 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>
+
+/* Work around GCC bug 44511. */
+#if 4 < __GNUC__ + (3 <= __GNUC_MINOR__)
+# pragma GCC diagnostic ignored "-Wreturn-type"
+#endif
+
+#if USE_ISOC_THREADS || USE_POSIX_THREADS || USE_ISOC_AND_POSIX_THREADS || USE_WINDOWS_THREADS
+
+/* Specification. */
+#include <locale.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+
+#include "glthread/thread.h"
+
+/* We want to use the system's setlocale() function here, not the gnulib
+ override. */
+#undef setlocale
+
+
+/* Some common locale names. */
+
+#if defined _WIN32 && !defined __CYGWIN__
+# define ENGLISH "English_United States"
+# define GERMAN "German_Germany"
+# define FRENCH "French_France"
+# define ENCODING ".1252"
+#else
+# define ENGLISH "en_US"
+# define GERMAN "de_DE"
+# define FRENCH "fr_FR"
+# if defined __sgi
+# define ENCODING ".ISO8859-15"
+# elif defined __hpux
+# define ENCODING ".utf8"
+# else
+# define ENCODING ".UTF-8"
+# endif
+#endif
+
+static const char LOCALE1[] = ENGLISH ENCODING;
+static const char LOCALE2[] = GERMAN ENCODING;
+static const char LOCALE3[] = FRENCH ENCODING;
+
+static char *expected;
+
+static void *
+thread1_func (void *arg)
+{
+ for (;;)
+ {
+ char buf[SETLOCALE_NULL_ALL_MAX];
+
+ if (setlocale_null_r (LC_ALL, buf, sizeof (buf)))
+ abort ();
+ if (strcmp (expected, buf) != 0)
+ {
+ fprintf (stderr, "thread1 disturbed by thread2!\n"); fflush (stderr);
+ abort ();
+ }
+ }
+
+ /*NOTREACHED*/
+}
+
+static void *
+thread2_func (void *arg)
+{
+ for (;;)
+ {
+ char buf[SETLOCALE_NULL_ALL_MAX];
+
+ setlocale_null_r (LC_NUMERIC, buf, sizeof (buf));
+ setlocale_null_r (LC_ALL, buf, sizeof (buf));
+ }
+
+ /*NOTREACHED*/
+}
+
+int
+main (int argc, char *argv[])
+{
+ if (setlocale (LC_ALL, LOCALE1) == NULL)
+ {
+ fprintf (stderr, "Skipping test: LOCALE1 not recognized\n");
+ return 77;
+ }
+ if (setlocale (LC_NUMERIC, LOCALE2) == NULL)
+ {
+ fprintf (stderr, "Skipping test: LOCALE2 not recognized\n");
+ return 77;
+ }
+ if (setlocale (LC_TIME, LOCALE3) == NULL)
+ {
+ fprintf (stderr, "Skipping test: LOCALE3 not recognized\n");
+ return 77;
+ }
+
+ expected = strdup (setlocale (LC_ALL, NULL));
+
+ /* Create the two threads. */
+ gl_thread_create (thread1_func, NULL);
+ gl_thread_create (thread2_func, NULL);
+
+ /* Let them run for 5 seconds. */
+ {
+ struct timespec duration;
+ duration.tv_sec = 5;
+ duration.tv_nsec = 0;
+
+ nanosleep (&duration, NULL);
+ }
+
+ return 0;
+}
+
+#else
+
+/* No multithreading available. */
+
+#include <stdio.h>
+
+int
+main ()
+{
+ fputs ("Skipping test: multithreading not enabled\n", stderr);
+ return 77;
+}
+
+#endif
+
+/* Without locking, the results of this test would be:
+glibc OK
+musl libc crash < 10 sec
+macOS crash < 1 sec
+FreeBSD crash < 1 sec
+NetBSD crash < 2 sec
+OpenBSD crash < 1 sec
+AIX crash < 2 sec
+HP-UX OK
+IRIX OK
+Solaris 10 OK
+Solaris 11.0 OK
+Solaris 11.4 OK
+Solaris OpenIndiana OK
+Haiku crash < 1 sec
+Cygwin crash < 1 sec
+mingw OK
+MSVC OK (assuming compiler option /MD !)
+*/