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diff --git a/bridges/source/cpp_uno/gcc3_macosx_x86-64/share.hxx b/bridges/source/cpp_uno/gcc3_macosx_x86-64/share.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
+ */
+#pragma once
+
+#include <uno/mapping.h>
+
+#include <typeinfo>
+#include <exception>
+#include <cstddef>
+
+namespace CPPU_CURRENT_NAMESPACE
+{
+
+// From opensource.apple.com: libunwind-35.1/include/unwind.h
+
+typedef enum {
+    _URC_NO_REASON = 0,
+    _URC_FOREIGN_EXCEPTION_CAUGHT = 1,
+    _URC_FATAL_PHASE2_ERROR = 2,
+    _URC_FATAL_PHASE1_ERROR = 3,
+    _URC_NORMAL_STOP = 4,
+    _URC_END_OF_STACK = 5,
+    _URC_HANDLER_FOUND = 6,
+    _URC_INSTALL_CONTEXT = 7,
+    _URC_CONTINUE_UNWIND = 8
+} _Unwind_Reason_Code;
+
+struct _Unwind_Exception
+{
+    uint64_t                   exception_class;
+    void                     (*exception_cleanup)(_Unwind_Reason_Code reason, struct _Unwind_Exception* exc);
+    uintptr_t                  private_1;        // non-zero means forced unwind
+    uintptr_t                  private_2;        // holds sp that phase1 found for phase2 to use
+#if !__LP64__
+    // The gcc implementation of _Unwind_Exception used attribute mode on the above fields
+    // which had the side effect of causing this whole struct to round up to 32 bytes in size.
+    // To be more explicit, we add pad fields added for binary compatibility.
+    uint32_t                reserved[3];
+#endif
+};
+
+
+// From libcppabi-24.2/include/unwind-cxx.h
+
+typedef unsigned _Unwind_Ptr __attribute__((__mode__(__pointer__)));
+
+// A C++ exception object consists of a header, which is a wrapper around
+// an unwind object header with additional C++ specific information,
+// followed by the exception object itself.
+
+struct __cxa_exception
+{
+#if __LP64__
+#if 0
+    // This is a new field added with LLVM 10
+    // <https://github.com/llvm/llvm-project/commit/674ec1eb16678b8addc02a4b0534ab383d22fa77>
+    // "[libcxxabi] Insert padding in __cxa_exception struct for compatibility".  The HACK in
+    // fillUnoException (bridges/source/cpp_uno/gcc3_macosx_x86-64/except.cxx) tries to find out at
+    // runtime whether a __cxa_exception has this member.  Once we can be sure that we only run
+    // against new libcxxabi that has this member, we can drop the "#if 0" here and drop the hack
+    // in fillUnoException.
+
+    // Now _Unwind_Exception is marked with __attribute__((aligned)),
+    // which implies __cxa_exception is also aligned. Insert padding
+    // in the beginning of the struct, rather than before unwindHeader.
+    void *reserve;
+#endif
+
+    // This is a new field to support C++ 0x exception_ptr.
+    // For binary compatibility it is at the start of this
+    // struct which is prepended to the object thrown in
+    // __cxa_allocate_exception.
+  size_t referenceCount;
+#endif
+  // Manage the exception object itself.
+  std::type_info *exceptionType;
+  void (*exceptionDestructor)(void *);
+
+  // The C++ standard has entertaining rules wrt calling set_terminate
+  // and set_unexpected in the middle of the exception cleanup process.
+  void (*unexpectedHandler)(); // std::unexpected_handler dropped from C++17
+  std::terminate_handler terminateHandler;
+
+  // The caught exception stack threads through here.
+  __cxa_exception *nextException;
+
+  // How many nested handlers have caught this exception.  A negated
+  // value is a signal that this object has been rethrown.
+  int handlerCount;
+
+#ifdef __ARM_EABI_UNWINDER__
+  // Stack of exceptions in cleanups.
+  __cxa_exception* nextPropagatingException;
+
+  // The number of active cleanup handlers for this exception.
+  int propagationCount;
+#else
+  // Cache parsed handler data from the personality routine Phase 1
+  // for Phase 2 and __cxa_call_unexpected.
+  int handlerSwitchValue;
+  const unsigned char *actionRecord;
+  const unsigned char *languageSpecificData;
+  _Unwind_Ptr catchTemp;
+  void *adjustedPtr;
+#endif
+#if !__LP64__
+    // This is a new field to support C++ 0x exception_ptr.
+    // For binary compatibility it is placed where the compiler
+    // previously adding padded to 64-bit align unwindHeader.
+  size_t referenceCount;
+#endif
+
+  // The generic exception header.  Must be last.
+  _Unwind_Exception unwindHeader;
+};
+
+// Each thread in a C++ program has access to a __cxa_eh_globals object.
+struct __cxa_eh_globals
+{
+  __cxa_exception *caughtExceptions;
+  unsigned int uncaughtExceptions;
+#ifdef __ARM_EABI_UNWINDER__
+  __cxa_exception* propagatingExceptions;
+#endif
+};
+
+}
+
+extern "C" CPPU_CURRENT_NAMESPACE::__cxa_eh_globals *__cxa_get_globals () noexcept;
+
+namespace CPPU_CURRENT_NAMESPACE
+{
+
+void raiseException(
+    uno_Any * pUnoExc, uno_Mapping * pUno2Cpp );
+
+void fillUnoException(uno_Any *, uno_Mapping * pCpp2Uno);
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */