1 files changed, 59 insertions, 0 deletions
diff --git a/sysdeps/pthread/tst-signal4.c b/sysdeps/pthread/tst-signal4.c
new file mode 100644
index 0000000000..e6e837a912
--- /dev/null
+++ b/sysdeps/pthread/tst-signal4.c
@@ -0,0 +1,59 @@
+/* Copyright (C) 2003-2020 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@redhat.com>, 2003.
+
+   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 <pthread.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+static int
+do_test (void)
+{
+  sigset_t ss;
+
+  sigemptyset (&ss);
+
+  int i;
+  for (i = 0; i < 10000; ++i)
+    {
+      long int r = random ();
+
+      if (r != SIG_BLOCK && r != SIG_SETMASK && r != SIG_UNBLOCK)
+	{
+	  int e = pthread_sigmask (r, &ss, NULL);
+
+	  if (e == 0)
+	    {
+	      printf ("pthread_sigmask succeeded for how = %ld\n", r);
+	      exit (1);
+	    }
+
+	  if (e != EINVAL)
+	    {
+	      puts ("pthread_sigmask didn't return EINVAL");
+	      exit (1);
+	    }
+	}
+    }
+
+  return 0;
+}
+
+#define TEST_FUNCTION do_test ()
+#include "../test-skeleton.c"