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+/*
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (C) 2022 embedded brains GmbH & Co. KG
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <rtems.h>
+#include <rtems/score/heapimpl.h>
+
+#include <string.h>
+
+#include <rtems/test.h>
+#include <rtems/test-info.h>
+
+const char rtems_test_name[] = "SPUNLIMITED 1";
+
+void __real__Workspace_Free( void * );
+void __wrap__Workspace_Free( void * );
+
+void __wrap__Workspace_Free( void *ptr )
+{
+ uintptr_t alloc_begin;
+ uintptr_t block_size;
+ uintptr_t block_end;
+ Heap_Block *block;
+
+ if ( ptr == NULL ) {
+ return;
+ }
+
+ alloc_begin = (uintptr_t) ptr;
+ block = _Heap_Block_of_alloc_area( alloc_begin, CPU_HEAP_ALIGNMENT );
+ block_size = _Heap_Block_size( block );
+ block_end = (uintptr_t) block + block_size;
+ memset( ptr, 0, block_end - alloc_begin );
+
+ __real__Workspace_Free( ptr );
+}
+
+static void delete_mutex( rtems_id id )
+{
+ rtems_status_code sc;
+
+ sc = rtems_semaphore_delete( id );
+ T_rsc_success( sc );
+}
+
+T_TEST_CASE( UnlimitedShrink )
+{
+ rtems_id ids[ 6 ];
+ size_t i;
+ rtems_status_code sc;
+
+ for ( i = 0; i < RTEMS_ARRAY_SIZE( ids ); ++i ) {
+ sc = rtems_semaphore_create(
+ rtems_build_name( 'M', 'U', 'T', 'X' ),
+ 1,
+ RTEMS_BINARY_SEMAPHORE,
+ 0,
+ &ids[ i ]
+ );
+ T_assert_rsc_success( sc );
+ }
+
+ sc = rtems_semaphore_obtain( ids[ 2 ], RTEMS_WAIT, RTEMS_NO_TIMEOUT );
+ T_rsc_success( sc );
+
+ delete_mutex( ids[ 5 ] );
+ delete_mutex( ids[ 4 ] );
+ delete_mutex( ids[ 3 ] );
+
+ sc = rtems_semaphore_release( ids[ 2 ] );
+ T_rsc_success( sc );
+
+ delete_mutex( ids[ 2 ] );
+ delete_mutex( ids[ 1 ] );
+ delete_mutex( ids[ 0 ] );
+}
+
+static rtems_task Init( rtems_task_argument argument )
+{
+ rtems_test_run( argument, TEST_STATE );
+}
+
+#define CONFIGURE_APPLICATION_NEEDS_SIMPLE_CONSOLE_DRIVER
+#define CONFIGURE_APPLICATION_DOES_NOT_NEED_CLOCK_DRIVER
+
+#define CONFIGURE_MAXIMUM_TASKS 1
+
+#define CONFIGURE_MAXIMUM_SEMAPHORES rtems_resource_unlimited( 2 )
+
+#define CONFIGURE_UNIFIED_WORK_AREAS
+
+#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
+
+#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
+
+#define CONFIGURE_INIT
+
+#include <rtems/confdefs.h>