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diff --git a/pthreads/tests/mutex6s.c b/pthreads/tests/mutex6s.c
new file mode 100644
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+/* 
+ * mutex6s.c
+ *
+ *
+ * --------------------------------------------------------------------------
+ *
+ *      Pthreads-win32 - POSIX Threads Library for Win32
+ *      Copyright(C) 1998 John E. Bossom
+ *      Copyright(C) 1999,2005 Pthreads-win32 contributors
+ * 
+ *      Contact Email: rpj@callisto.canberra.edu.au
+ * 
+ *      The current list of contributors is contained
+ *      in the file CONTRIBUTORS included with the source
+ *      code distribution. The list can also be seen at the
+ *      following World Wide Web location:
+ *      http://sources.redhat.com/pthreads-win32/contributors.html
+ * 
+ *      This 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 of the License, or (at your option) any later version.
+ * 
+ *      This 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 this library in the file COPYING.LIB;
+ *      if not, write to the Free Software Foundation, Inc.,
+ *      59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ *
+ * --------------------------------------------------------------------------
+ *
+ * Test the default (type not set) static mutex type.
+ * Should be the same as PTHREAD_MUTEX_NORMAL.
+ * Thread locks mutex twice (recursive lock).
+ * Locking thread should deadlock on second attempt.
+ *
+ * Depends on API functions: 
+ *	pthread_mutex_lock()
+ *	pthread_mutex_trylock()
+ *	pthread_mutex_unlock()
+ */
+
+#include "test.h"
+
+static int lockCount = 0;
+
+static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
+
+void * locker(void * arg)
+{
+  assert(pthread_mutex_lock(&mutex) == 0);
+  lockCount++;
+
+  /* Should wait here (deadlocked) */
+  assert(pthread_mutex_lock(&mutex) == 0);
+  lockCount++;
+  assert(pthread_mutex_unlock(&mutex) == 0);
+
+  return 0;
+}
+ 
+int
+main()
+{
+  pthread_t t;
+
+  assert(mutex == PTHREAD_MUTEX_INITIALIZER);
+
+  assert(pthread_create(&t, NULL, locker, NULL) == 0);
+
+  Sleep(1000);
+
+  assert(lockCount == 1);
+
+  /*
+   * Should succeed even though we don't own the lock
+   * because FAST mutexes don't check ownership.
+   */
+  assert(pthread_mutex_unlock(&mutex) == 0);
+
+  Sleep (1000);
+
+  assert(lockCount == 2);
+
+  exit(0);
+
+  /* Never reached */
+  return 0;
+}