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diff --git a/include/gc_nursery.h b/include/gc_nursery.h
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-
-/*
- * Copyright (c) 1999 by Silicon Graphics. All rights reserved.
- *
- * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
- * OR IMPLIED. ANY USE IS AT YOUR OWN RISK.
- *
- * Permission is hereby granted to use or copy this program
- * for any purpose, provided the above notices are retained on all copies.
- * Permission to modify the code and to distribute modified code is granted,
- * provided the above notices are retained, and a notice that the code was
- * modified is included with the above copyright notice.
- */
-
-/*
- * THIS IMPLEMENTATION FOR THIS INTERFACE IS INCOMPLETE.
- * NONE OF THIS HAS BEEN TESTED. DO NOT USE.
- *
- * Comments on the interface are appreciated, especially from
- * potential users of the interface.
- *
- * This is a Bartlett style copying collector for young objects.
- * We assume for now that all objects allocated through this
- * mechanism have pointers only in the first BITMAP_BITS words.
- * (On a 32-bit machine, BITMAP_BITS is 30.)
- * Objects allocated in this manner should be rarely referenced
- * by objects not allocated either through this interface, or through
- * the typed allocation interface.
- * If this interface is used, we assume that type information provided
- * through either this or the typed allocation interface is valid
- * in a stronger sense:
- *
- * 1) No pointers are stored in fields not marked as such.
- * (Otherwise it is only necessary that objects referenced by
- * fields marked as nonpointers are also reachable via another
- * path.)
- * 2) Values stored in pointer fields are either not addresses in
- * the heap, or they really are pointers. In the latter case, it
- * is acceptable to move the object they refer to, and to update
- * the pointer.
- *
- * GC_free may not be invoked on objects allocated with GC_copying_malloc.
- *
- * No extra space is added to the end of objects allocated through this
- * interface. If the client needs to maintain pointers past the
- * end, the size should be explicitly padded.
- *
- * We assume that calls to this will usually be compiler generated.
- * Hence the interface is allowed to be a bit ugly in return for speed.
- */
-
-#include "gc_copy_descr.h"
-
-/* GC_copy_descr.h must define */
-/* GC_SIZE_FROM_DESCRIPTOR(descr) and */
-/* GC_BIT_MAP_FROM_DESCRIPTOR(descr). */
-/* It may either be the GC supplied version of the header file, or a */
-/* client specific one that derives the information from a client- */
-/* specific type descriptor. */
-
-typedef GC_PTR GC_copy_alloc_state;
- /* Current allocator state. */
- /* Multiple allocation states */
- /* may be used for concurrent */
- /* allocation, or to enhance */
- /* locality. */
- /* Should be treated as opaque. */
-
-/* Allocate a memory block of size given in the descriptor, and with */
-/* pointer layout given by the descriptor. The resulting block may not */
-/* be cleared, and should immediately be initialized by the client. */
-/* (A concurrent GC may see an uninitialized pointer field. If it */
-/* points outside the nursery, that's fine. If it points inside, it */
-/* may retain an object, and be relocated. But that's also fine, since */
-/* the new value will be immediately overwritten. */
-/* This variant acquires the allocation lock, and uses a default */
-/* global allocation state. */
-GC_PTR GC_copying_malloc(GC_copy_descriptor);
-
-/* A variant of the above that does no locking on the fast path, */
-/* and passes an explicit pointer to an allocation state. */
-/* The allocation state is updated. */
-/* There will eventually need to be a macro or inline function version */
-/* of this. */
-GC_PTR GC_copying_malloc2(GC_copy_descriptor, GC_copy_alloc_state *);
-
-/* Initialize an allocation state so that it can be used for */
-/* allocation. This implicitly reserves a small section of the */
-/* nursery for use with this allocator. */
-void GC_init_copy_alloc_state(GC_copy_alloc_state *);