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+// -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*-
+// Copyright (c) 2007, Google Inc.
+// All rights reserved.
+//
+// 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 Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// 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.
+
+// ---
+// Author: Craig Silverstein <opensource@google.com>
+//
+// Some obscure memory-allocation routines may not be declared on all
+// systems. In those cases, we'll just declare them ourselves.
+// This file is meant to be used only internally, for unittests.
+
+#include <config.h>
+
+#ifndef _XOPEN_SOURCE
+# define _XOPEN_SOURCE 600 // for posix_memalign
+#endif
+#include <stdlib.h> // for posix_memalign
+// FreeBSD has malloc.h, but complains if you use it
+#if defined(HAVE_MALLOC_H) && !defined(__FreeBSD__)
+#include <malloc.h> // for memalign, valloc, pvalloc
+#endif
+
+// __THROW is defined in glibc systems. It means, counter-intuitively,
+// "This function will never throw an exception." It's an optional
+// optimization tool, but we may need to use it to match glibc prototypes.
+#ifndef __THROW // I guess we're not on a glibc system
+# define __THROW // __THROW is just an optimization, so ok to make it ""
+#endif
+
+#if !HAVE_CFREE_SYMBOL
+extern "C" void cfree(void* ptr) __THROW;
+#endif
+#if !HAVE_DECL_POSIX_MEMALIGN
+extern "C" int posix_memalign(void** ptr, size_t align, size_t size) __THROW;
+#endif
+#if !HAVE_DECL_MEMALIGN
+extern "C" void* memalign(size_t __alignment, size_t __size) __THROW;
+#endif
+#if !HAVE_DECL_VALLOC
+extern "C" void* valloc(size_t __size) __THROW;
+#endif
+#if !HAVE_DECL_PVALLOC
+extern "C" void* pvalloc(size_t __size) __THROW;
+#endif