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diff --git a/libcilkrts/runtime/cilk-abi-vla-internal.h b/libcilkrts/runtime/cilk-abi-vla-internal.h
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+/* cilk-abi-vla-internal.h        -*-C++-*-
+ *
+ *************************************************************************
+ *
+ *  @copyright
+ *  Copyright (C) 2013, Intel Corporation
+ *  All rights reserved.
+ *  
+ *  @copyright
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions
+ *  are met:
+ *  
+ *    * Redistributions of source code must retain the above copyright
+ *      notice, this list of conditions and the following disclaimer.
+ *    * 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.
+ *    * Neither the name of Intel Corporation nor the names of its
+ *      contributors may be used to endorse or promote products derived
+ *      from this software without specific prior written permission.
+ *  
+ *  @copyright
+ *  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
+ *  HOLDER 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.
+ **************************************************************************/
+
+/**
+ * @file cilk-abi-vla-internal.h
+ *
+ * @brief Allocation/deallocation function for use with Variable Length
+ * Arrays in spawning functions.
+ *
+ * These should be the only functions in the Cilk runtime allocating memory
+ * from the standard C runtime heap.  This memory will be provided to user
+ * code for use in VLAs, when the memory cannot be allocated from the stack.
+ *
+ * While these functions are simply passthroughs to malloc and free at the
+ * moment, once we've got the basics of VLA allocations working we'll make
+ * them do fancier tricks.
+ */
+
+/**
+ * @brief Allocate memory from the heap for use by a Variable Length Array in
+ * a spawning function.
+ *
+ * @param sf The __cilkrts_stack_frame for the spawning function containing
+ * the VLA.
+ * @param full_size The number of bytes to be allocated, including any tags
+ * needed to identify this as allocated from the heap.
+ * @param align Any alignment necessary for the allocation.
+ */
+
+void *vla_internal_heap_alloc(__cilkrts_stack_frame *sf,
+                              size_t full_size,
+                              uint32_t align);
+
+/**
+ * @brief Deallocate memory from the heap used by a Variable Length Array in
+ * a spawning function.
+ *
+ * @param t The address of the memory block to be freed.
+ * @param size The size of the memory block to be freed.
+ */
+
+void vla_internal_heap_free(void *t,
+                            size_t size);
+
+/**
+ * @brief Deallocate memory from the original stack.  We'll do this by adding
+ * full_size to ff->sync_sp.  So after the sync, the Variable Length Array
+ * will no longer be allocated on the stack.
+ *
+ * @param sf The __cilkrts_stack_frame for the spawning function that is
+ * deallocating a VLA.
+ * @param full_size The size of the VLA, including any alignment and tags.
+ */
+void vla_free_from_original_stack(__cilkrts_stack_frame *sf,
+                                  size_t full_size);