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diff --git a/security/nss/lib/base/baset.h b/security/nss/lib/base/baset.h
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+++ b/security/nss/lib/base/baset.h
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+/* 
+ * The contents of this file are subject to the Mozilla Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/MPL/
+ * 
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ * 
+ * The Original Code is the Netscape security libraries.
+ * 
+ * The Initial Developer of the Original Code is Netscape
+ * Communications Corporation.  Portions created by Netscape are 
+ * Copyright (C) 1994-2000 Netscape Communications Corporation.  All
+ * Rights Reserved.
+ * 
+ * Contributor(s):
+ * 
+ * Alternatively, the contents of this file may be used under the
+ * terms of the GNU General Public License Version 2 or later (the
+ * "GPL"), in which case the provisions of the GPL are applicable 
+ * instead of those above.  If you wish to allow use of your 
+ * version of this file only under the terms of the GPL and not to
+ * allow others to use your version of this file under the MPL,
+ * indicate your decision by deleting the provisions above and
+ * replace them with the notice and other provisions required by
+ * the GPL.  If you do not delete the provisions above, a recipient
+ * may use your version of this file under either the MPL or the
+ * GPL.
+ */
+
+#ifndef BASET_H
+#define BASET_H
+
+#ifdef DEBUG
+static const char BASET_CVS_ID[] = "@(#) $RCSfile$ $Revision$ $Date$ $Name$";
+#endif /* DEBUG */
+
+/*
+ * baset.h
+ *
+ * This file contains definitions for the basic types used throughout
+ * nss but not available publicly.
+ */
+
+#ifndef NSSBASET_H
+#include "nssbaset.h"
+#endif /* NSSBASET_H */
+
+#include "plhash.h"
+
+PR_BEGIN_EXTERN_C
+
+/*
+ * nssArenaMark
+ *
+ * This type is used to mark the current state of an NSSArena.
+ */
+
+struct nssArenaMarkStr;
+typedef struct nssArenaMarkStr nssArenaMark;
+
+#ifdef DEBUG
+/*
+ * ARENA_THREADMARK
+ * 
+ * Optionally, this arena implementation can be compiled with some
+ * runtime checking enabled, which will catch the situation where
+ * one thread "marks" the arena, another thread allocates memory,
+ * and then the mark is released.  Usually this is a surprise to
+ * the second thread, and this leads to weird runtime errors.
+ * Define ARENA_THREADMARK to catch these cases; we define it for all
+ * (internal and external) debug builds.
+ */
+#define ARENA_THREADMARK
+
+/*
+ * ARENA_DESTRUCTOR_LIST
+ *
+ * Unfortunately, our pointer-tracker facility, used in debug
+ * builds to agressively fight invalid pointers, requries that
+ * pointers be deregistered when objects are destroyed.  This
+ * conflicts with the standard arena usage where "memory-only"
+ * objects (that don't hold onto resources outside the arena)
+ * can be allocated in an arena, and never destroyed other than
+ * when the arena is destroyed.  Therefore we have added a
+ * destructor-registratio facility to our arenas.  This was not
+ * a simple decision, since we're getting ever-further away from
+ * the original arena philosophy.  However, it was felt that
+ * adding this in debug builds wouldn't be so bad; as it would
+ * discourage them from being used for "serious" purposes.
+ * This facility requires ARENA_THREADMARK to be defined.
+ */
+#ifdef ARENA_THREADMARK
+#define ARENA_DESTRUCTOR_LIST
+#endif /* ARENA_THREADMARK */
+
+#endif /* DEBUG */
+
+/*
+ * nssPointerTracker
+ *
+ * This type is used in debug builds (both external and internal) to
+ * track our object pointers.  Objects of this type must be statically
+ * allocated, which means the structure size must be available to the
+ * compiler.  Therefore we must expose the contents of this structure.
+ * But please don't access elements directly; use the accessors.
+ */
+
+#ifdef DEBUG
+struct nssPointerTrackerStr {
+  PRCallOnceType once;
+  PZLock *lock;
+  PLHashTable *table;
+};
+typedef struct nssPointerTrackerStr nssPointerTracker;
+#endif /* DEBUG */
+
+/*
+ * nssStringType
+ *
+ * There are several types of strings in the real world.  We try to
+ * use only UTF8 and avoid the rest, but that's not always possible.
+ * So we have a couple converter routines to go to and from the other
+ * string types.  We have to be able to specify those string types,
+ * so we have this enumeration.
+ */
+
+enum nssStringTypeEnum {
+  nssStringType_DirectoryString,
+  nssStringType_TeletexString, /* Not "teletext" with trailing 't' */
+  nssStringType_PrintableString,
+  nssStringType_UniversalString,
+  nssStringType_BMPString,
+  nssStringType_UTF8String,
+  nssStringType_PHGString,
+  nssStringType_GeneralString,
+
+  nssStringType_Unknown = -1
+};
+typedef enum nssStringTypeEnum nssStringType;
+
+PR_END_EXTERN_C
+
+#endif /* BASET_H */