Remove some unused third party code. (#15475)

i.e. C++ helpers for Boehm GC.

2 files changed, 0 insertions, 723 deletions

diff --git a/include/gc_allocator.h b/include/gc_allocator.h
deleted file mode 100644
index 200f181e..00000000
--- a/include/gc_allocator.h
+++ /dev/null
@@ -1,243 +0,0 @@
-/*
- * Copyright (c) 1996-1997
- * Silicon Graphics Computer Systems, Inc.
- *
- * Permission to use, copy, modify, distribute and sell this software
- * and its documentation for any purpose is hereby granted without fee,
- * provided that the above copyright notice appear in all copies and
- * that both that copyright notice and this permission notice appear
- * in supporting documentation.  Silicon Graphics makes no
- * representations about the suitability of this software for any
- * purpose.  It is provided "as is" without express or implied warranty.
- *
- * Copyright (c) 2002
- * Hewlett-Packard Company
- *
- * Permission to use, copy, modify, distribute and sell this software
- * and its documentation for any purpose is hereby granted without fee,
- * provided that the above copyright notice appear in all copies and
- * that both that copyright notice and this permission notice appear
- * in supporting documentation.  Hewlett-Packard Company makes no
- * representations about the suitability of this software for any
- * purpose.  It is provided "as is" without express or implied warranty.
- */
-
-/*
- * This implements standard-conforming allocators that interact with
- * the garbage collector.  Gc_alloctor<T> allocates garbage-collectable
- * objects of type T.  Traceable_allocator<T> allocates objects that
- * are not temselves garbage collected, but are scanned by the
- * collector for pointers to collectable objects.  Traceable_alloc
- * should be used for explicitly managed STL containers that may
- * point to collectable objects.
- *
- * This code was derived from an earlier version of the GNU C++ standard
- * library, which itself was derived from the SGI STL implementation.
- */
-
-#ifndef GC_ALLOCATOR_H
-
-#define GC_ALLOCATOR_H
-
-#include "gc.h"
-
-#if defined(__GNUC__)
-#  define GC_ATTR_UNUSED __attribute__((unused))
-#else
-#  define GC_ATTR_UNUSED
-#endif
-
-/* First some helpers to allow us to dispatch on whether or not a type
- * is known to be pointerfree.
- * These are private, except that the client may invoke the
- * GC_DECLARE_PTRFREE macro.
- */
-
-struct GC_true_type {};
-struct GC_false_type {};
-
-template <class GC_tp>
-struct GC_type_traits {
-  GC_false_type GC_is_ptr_free;
-};
-
-# define GC_DECLARE_PTRFREE(T) \
-template<> struct GC_type_traits<T> { GC_true_type GC_is_ptr_free; }
-
-GC_DECLARE_PTRFREE(signed char);
-GC_DECLARE_PTRFREE(unsigned char);
-GC_DECLARE_PTRFREE(signed short);
-GC_DECLARE_PTRFREE(unsigned short);
-GC_DECLARE_PTRFREE(signed int);
-GC_DECLARE_PTRFREE(unsigned int);
-GC_DECLARE_PTRFREE(signed long);
-GC_DECLARE_PTRFREE(unsigned long);
-GC_DECLARE_PTRFREE(float);
-GC_DECLARE_PTRFREE(double);
-/* The client may want to add others.	*/
-
-// In the following GC_Tp is GC_true_type iff we are allocating a
-// pointerfree object.
-template <class GC_Tp>
-inline void * GC_selective_alloc(size_t n, GC_Tp) {
-    return GC_MALLOC(n);
-}
-
-template <>
-inline void * GC_selective_alloc<GC_true_type>(size_t n, GC_true_type) {
-    return GC_MALLOC_ATOMIC(n);
-}
-
-/* Now the public gc_allocator<T> class:
- */
-template <class GC_Tp>
-class gc_allocator {
-public:
-  typedef size_t     size_type;
-  typedef ptrdiff_t  difference_type;
-  typedef GC_Tp*       pointer;
-  typedef const GC_Tp* const_pointer;
-  typedef GC_Tp&       reference;
-  typedef const GC_Tp& const_reference;
-  typedef GC_Tp        value_type;
-
-  template <class GC_Tp1> struct rebind {
-    typedef gc_allocator<GC_Tp1> other;
-  };
-
-  gc_allocator()  {}
-# ifndef _MSC_VER
-    // I'm not sure why this is needed here in addition to the following.
-    // The standard specifies it for the standard allocator, but VC++ rejects
-    // it.	-HB
-    gc_allocator(const gc_allocator&) throw() {}
-# endif
-  template <class GC_Tp1> gc_allocator(const gc_allocator<GC_Tp1>&) throw() {}
-  ~gc_allocator() throw() {}
-
-  pointer address(reference GC_x) const { return &GC_x; }
-  const_pointer address(const_reference GC_x) const { return &GC_x; }
-
-  // GC_n is permitted to be 0.  The C++ standard says nothing about what
-  // the return value is when GC_n == 0.
-  GC_Tp* allocate(size_type GC_n, const void* = 0) {
-    GC_type_traits<GC_Tp> traits;
-    return static_cast<GC_Tp *>
-	    (GC_selective_alloc(GC_n * sizeof(GC_Tp),
-			        traits.GC_is_ptr_free));
-  }
-
-  // __p is not permitted to be a null pointer.
-  void deallocate(pointer __p, size_type GC_ATTR_UNUSED GC_n)
-    { GC_FREE(__p); }
-
-  size_type max_size() const throw()
-    { return size_t(-1) / sizeof(GC_Tp); }
-
-  void construct(pointer __p, const GC_Tp& __val) { new(__p) GC_Tp(__val); }
-  void destroy(pointer __p) { __p->~GC_Tp(); }
-};
-
-template<>
-class gc_allocator<void> {
-  typedef size_t      size_type;
-  typedef ptrdiff_t   difference_type;
-  typedef void*       pointer;
-  typedef const void* const_pointer;
-  typedef void        value_type;
-
-  template <class GC_Tp1> struct rebind {
-    typedef gc_allocator<GC_Tp1> other;
-  };
-};
-
-
-template <class GC_T1, class GC_T2>
-inline bool operator==(const gc_allocator<GC_T1>&, const gc_allocator<GC_T2>&)
-{
-  return true;
-}
-
-template <class GC_T1, class GC_T2>
-inline bool operator!=(const gc_allocator<GC_T1>&, const gc_allocator<GC_T2>&)
-{
-  return false;
-}
-
-/*
- * And the public traceable_allocator class.
- */
-
-// Note that we currently don't specialize the pointer-free case, since a
-// pointer-free traceable container doesn't make that much sense,
-// though it could become an issue due to abstraction boundaries.
-template <class GC_Tp>
-class traceable_allocator {
-public:
-  typedef size_t     size_type;
-  typedef ptrdiff_t  difference_type;
-  typedef GC_Tp*       pointer;
-  typedef const GC_Tp* const_pointer;
-  typedef GC_Tp&       reference;
-  typedef const GC_Tp& const_reference;
-  typedef GC_Tp        value_type;
-
-  template <class GC_Tp1> struct rebind {
-    typedef traceable_allocator<GC_Tp1> other;
-  };
-
-  traceable_allocator() throw() {}
-# ifndef _MSC_VER
-    traceable_allocator(const traceable_allocator&) throw() {}
-# endif
-  template <class GC_Tp1> traceable_allocator
-	  (const traceable_allocator<GC_Tp1>&) throw() {}
-  ~traceable_allocator() throw() {}
-
-  pointer address(reference GC_x) const { return &GC_x; }
-  const_pointer address(const_reference GC_x) const { return &GC_x; }
-
-  // GC_n is permitted to be 0.  The C++ standard says nothing about what
-  // the return value is when GC_n == 0.
-  GC_Tp* allocate(size_type GC_n, const void* = 0) {
-    return static_cast<GC_Tp*>(GC_MALLOC_UNCOLLECTABLE(GC_n * sizeof(GC_Tp)));
-  }
-
-  // __p is not permitted to be a null pointer.
-  void deallocate(pointer __p, size_type GC_ATTR_UNUSED GC_n)
-    { GC_FREE(__p); }
-
-  size_type max_size() const throw()
-    { return size_t(-1) / sizeof(GC_Tp); }
-
-  void construct(pointer __p, const GC_Tp& __val) { new(__p) GC_Tp(__val); }
-  void destroy(pointer __p) { __p->~GC_Tp(); }
-};
-
-template<>
-class traceable_allocator<void> {
-  typedef size_t      size_type;
-  typedef ptrdiff_t   difference_type;
-  typedef void*       pointer;
-  typedef const void* const_pointer;
-  typedef void        value_type;
-
-  template <class GC_Tp1> struct rebind {
-    typedef traceable_allocator<GC_Tp1> other;
-  };
-};
-
-
-template <class GC_T1, class GC_T2>
-inline bool operator==(const traceable_allocator<GC_T1>&, const traceable_allocator<GC_T2>&)
-{
-  return true;
-}
-
-template <class GC_T1, class GC_T2>
-inline bool operator!=(const traceable_allocator<GC_T1>&, const traceable_allocator<GC_T2>&)
-{
-  return false;
-}
-
-#endif /* GC_ALLOCATOR_H */
diff --git a/include/new_gc_alloc.h b/include/new_gc_alloc.h
deleted file mode 100644
index 7546638c..00000000
--- a/include/new_gc_alloc.h
+++ /dev/null
@@ -1,480 +0,0 @@
-/*
- * Copyright (c) 1996-1998 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 is a revision of gc_alloc.h for SGI STL versions > 3.0
-// Unlike earlier versions, it supplements the standard "alloc.h"
-// instead of replacing it.
-//
-// This is sloppy about variable names used in header files.
-// It also doesn't yet understand the new header file names or
-// namespaces.
-//
-// This assumes the collector has been compiled with -DATOMIC_UNCOLLECTABLE.
-// The user should also consider -DREDIRECT_MALLOC=GC_uncollectable_malloc,
-// to ensure that object allocated through malloc are traced.
-//
-// Some of this could be faster in the explicit deallocation case.
-// In particular, we spend too much time clearing objects on the
-// free lists.  That could be avoided.
-//
-// This uses template classes with static members, and hence does not work
-// with g++ 2.7.2 and earlier.
-//
-// Unlike its predecessor, this one simply defines
-// 	gc_alloc
-//	single_client_gc_alloc
-//	traceable_alloc
-//	single_client_traceable_alloc
-//
-// It does not redefine alloc.  Nor does it change the default allocator,
-// though the user may wish to do so.  (The argument against changing
-// the default allocator is that it may introduce subtle link compatibility
-// problems.  The argument for changing it is that the usual default
-// allocator is usually a very bad choice for a garbage collected environment.)
-//
-// This code assumes that the collector itself has been compiled with a
-// compiler that defines __STDC__ .
-//
-
-#ifndef GC_ALLOC_H
-
-#include "gc.h"
-
-#if (__GNUC__ < 3)
-# include <stack>  // A more portable way to get stl_alloc.h .
-#else
-# include <bits/stl_alloc.h>
-# ifndef __STL_BEGIN_NAMESPACE
-# define __STL_BEGIN_NAMESPACE namespace std {
-# define __STL_END_NAMESPACE };
-# endif
-#ifndef __STL_USE_STD_ALLOCATORS
-#define __STL_USE_STD_ALLOCATORS
-#endif
-#endif
-
-/* A hack to deal with gcc 3.1.  If you are using gcc3.1 and later,	*/
-/* you should probably really use gc_allocator.h instead.		*/
-#if defined (__GNUC__) && \
-    (__GNUC > 3 || (__GNUC__ == 3 && (__GNUC_MINOR__ >= 1)))
-# define simple_alloc __simple_alloc
-#endif
-
-
-
-#define GC_ALLOC_H
-
-#include <stddef.h>
-#include <string.h>
-
-// The following need to match collector data structures.
-// We can't include gc_priv.h, since that pulls in way too much stuff.
-// This should eventually be factored out into another include file.
-
-extern "C" {
-    extern void ** const GC_objfreelist_ptr;
-    extern void ** const GC_aobjfreelist_ptr;
-    extern void ** const GC_uobjfreelist_ptr;
-    extern void ** const GC_auobjfreelist_ptr;
-
-    extern void GC_incr_words_allocd(size_t words);
-    extern void GC_incr_mem_freed(size_t words);
-
-    extern char * GC_generic_malloc_words_small(size_t word, int kind);
-}
-
-// Object kinds; must match PTRFREE, NORMAL, UNCOLLECTABLE, and
-// AUNCOLLECTABLE in gc_priv.h.
-
-enum { GC_PTRFREE = 0, GC_NORMAL = 1, GC_UNCOLLECTABLE = 2,
-       GC_AUNCOLLECTABLE = 3 };
-
-enum { GC_max_fast_bytes = 255 };
-
-enum { GC_bytes_per_word = sizeof(char *) };
-
-enum { GC_byte_alignment = 8 };
-
-enum { GC_word_alignment = GC_byte_alignment/GC_bytes_per_word };
-
-inline void * &GC_obj_link(void * p)
-{   return *reinterpret_cast<void **>(p);  }
-
-// Compute a number of words >= n+1 bytes.
-// The +1 allows for pointers one past the end.
-inline size_t GC_round_up(size_t n)
-{
-    return ((n + GC_byte_alignment)/GC_byte_alignment)*GC_word_alignment;
-}
-
-// The same but don't allow for extra byte.
-inline size_t GC_round_up_uncollectable(size_t n)
-{
-    return ((n + GC_byte_alignment - 1)/GC_byte_alignment)*GC_word_alignment;
-}
-
-template <int dummy>
-class GC_aux_template {
-public:
-  // File local count of allocated words.  Occasionally this is
-  // added into the global count.  A separate count is necessary since the
-  // real one must be updated with a procedure call.
-  static size_t GC_words_recently_allocd;
-
-  // Same for uncollectable mmory.  Not yet reflected in either
-  // GC_words_recently_allocd or GC_non_gc_bytes.
-  static size_t GC_uncollectable_words_recently_allocd;
-
-  // Similar counter for explicitly deallocated memory.
-  static size_t GC_mem_recently_freed;
-
-  // Again for uncollectable memory.
-  static size_t GC_uncollectable_mem_recently_freed;
-
-  static void * GC_out_of_line_malloc(size_t nwords, int kind);
-};
-
-template <int dummy>
-size_t GC_aux_template<dummy>::GC_words_recently_allocd = 0;
-
-template <int dummy>
-size_t GC_aux_template<dummy>::GC_uncollectable_words_recently_allocd = 0;
-
-template <int dummy>
-size_t GC_aux_template<dummy>::GC_mem_recently_freed = 0;
-
-template <int dummy>
-size_t GC_aux_template<dummy>::GC_uncollectable_mem_recently_freed = 0;
-
-template <int dummy>
-void * GC_aux_template<dummy>::GC_out_of_line_malloc(size_t nwords, int kind)
-{
-    GC_words_recently_allocd += GC_uncollectable_words_recently_allocd;
-    GC_non_gc_bytes +=
-                GC_bytes_per_word * GC_uncollectable_words_recently_allocd;
-    GC_uncollectable_words_recently_allocd = 0;
-
-    GC_mem_recently_freed += GC_uncollectable_mem_recently_freed;
-    GC_non_gc_bytes -= 
-                GC_bytes_per_word * GC_uncollectable_mem_recently_freed;
-    GC_uncollectable_mem_recently_freed = 0;
-
-    GC_incr_words_allocd(GC_words_recently_allocd);
-    GC_words_recently_allocd = 0;
-
-    GC_incr_mem_freed(GC_mem_recently_freed);
-    GC_mem_recently_freed = 0;
-
-    return GC_generic_malloc_words_small(nwords, kind);
-}
-
-typedef GC_aux_template<0> GC_aux;
-
-// A fast, single-threaded, garbage-collected allocator
-// We assume the first word will be immediately overwritten.
-// In this version, deallocation is not a noop, and explicit
-// deallocation is likely to help performance.
-template <int dummy>
-class single_client_gc_alloc_template {
-    public:
-     	static void * allocate(size_t n)
-        {
-	    size_t nwords = GC_round_up(n);
-	    void ** flh;
-	    void * op;
-
-  	    if (n > GC_max_fast_bytes) return GC_malloc(n);
-	    flh = GC_objfreelist_ptr + nwords;
-	    if (0 == (op = *flh)) {
-		return GC_aux::GC_out_of_line_malloc(nwords, GC_NORMAL);
-	    }
-	    *flh = GC_obj_link(op);
-	    GC_aux::GC_words_recently_allocd += nwords;
-	    return op;
-        }
-     	static void * ptr_free_allocate(size_t n)
-        {
-	    size_t nwords = GC_round_up(n);
-	    void ** flh;
-	    void * op;
-
-  	    if (n > GC_max_fast_bytes) return GC_malloc_atomic(n);
-	    flh = GC_aobjfreelist_ptr + nwords;
-	    if (0 == (op = *flh)) {
-		return GC_aux::GC_out_of_line_malloc(nwords, GC_PTRFREE);
-	    }
-	    *flh = GC_obj_link(op);
-	    GC_aux::GC_words_recently_allocd += nwords;
-	    return op;
-        }
-	static void deallocate(void *p, size_t n)
-	{
-            size_t nwords = GC_round_up(n);
-            void ** flh;
-	   
-	    if (n > GC_max_fast_bytes)  {
-		GC_free(p);
-	    } else {
-	        flh = GC_objfreelist_ptr + nwords;
-	        GC_obj_link(p) = *flh;
-		memset(reinterpret_cast<char *>(p) + GC_bytes_per_word, 0,
-		       GC_bytes_per_word * (nwords - 1));
-	        *flh = p;
-	        GC_aux::GC_mem_recently_freed += nwords;
-	    }
-	}
-	static void ptr_free_deallocate(void *p, size_t n)
-	{
-            size_t nwords = GC_round_up(n);
-            void ** flh;
-	   
-	    if (n > GC_max_fast_bytes) {
-		GC_free(p);
-	    } else {
-	    	flh = GC_aobjfreelist_ptr + nwords;
-	    	GC_obj_link(p) = *flh;
-	    	*flh = p;
-	    	GC_aux::GC_mem_recently_freed += nwords;
-	    }
-	}
-};
-
-typedef single_client_gc_alloc_template<0> single_client_gc_alloc;
-
-// Once more, for uncollectable objects.
-template <int dummy>
-class single_client_traceable_alloc_template {
-    public:
-     	static void * allocate(size_t n)
-        {
-	    size_t nwords = GC_round_up_uncollectable(n);
-	    void ** flh;
-	    void * op;
-
-  	    if (n > GC_max_fast_bytes) return GC_malloc_uncollectable(n);
-	    flh = GC_uobjfreelist_ptr + nwords;
-	    if (0 == (op = *flh)) {
-		return GC_aux::GC_out_of_line_malloc(nwords, GC_UNCOLLECTABLE);
-	    }
-	    *flh = GC_obj_link(op);
-	    GC_aux::GC_uncollectable_words_recently_allocd += nwords;
-	    return op;
-        }
-     	static void * ptr_free_allocate(size_t n)
-        {
-	    size_t nwords = GC_round_up_uncollectable(n);
-	    void ** flh;
-	    void * op;
-
-  	    if (n > GC_max_fast_bytes) return GC_malloc_atomic_uncollectable(n);
-	    flh = GC_auobjfreelist_ptr + nwords;
-	    if (0 == (op = *flh)) {
-		return GC_aux::GC_out_of_line_malloc(nwords, GC_AUNCOLLECTABLE);
-	    }
-	    *flh = GC_obj_link(op);
-	    GC_aux::GC_uncollectable_words_recently_allocd += nwords;
-	    return op;
-        }
-	static void deallocate(void *p, size_t n)
-	{
-            size_t nwords = GC_round_up_uncollectable(n);
-            void ** flh;
-	   
-	    if (n > GC_max_fast_bytes)  {
-		GC_free(p);
-	    } else {
-	        flh = GC_uobjfreelist_ptr + nwords;
-	        GC_obj_link(p) = *flh;
-	        *flh = p;
-	        GC_aux::GC_uncollectable_mem_recently_freed += nwords;
-	    }
-	}
-	static void ptr_free_deallocate(void *p, size_t n)
-	{
-            size_t nwords = GC_round_up_uncollectable(n);
-            void ** flh;
-	   
-	    if (n > GC_max_fast_bytes) {
-		GC_free(p);
-	    } else {
-	    	flh = GC_auobjfreelist_ptr + nwords;
-	    	GC_obj_link(p) = *flh;
-	    	*flh = p;
-	    	GC_aux::GC_uncollectable_mem_recently_freed += nwords;
-	    }
-	}
-};
-
-typedef single_client_traceable_alloc_template<0> single_client_traceable_alloc;
-
-template < int dummy >
-class gc_alloc_template {
-    public:
-     	static void * allocate(size_t n) { return GC_malloc(n); }
-     	static void * ptr_free_allocate(size_t n)
-		{ return GC_malloc_atomic(n); }
-	static void deallocate(void *, size_t) { }
-	static void ptr_free_deallocate(void *, size_t) { }
-};
-
-typedef gc_alloc_template < 0 > gc_alloc;
-
-template < int dummy >
-class traceable_alloc_template {
-    public:
-     	static void * allocate(size_t n) { return GC_malloc_uncollectable(n); }
-     	static void * ptr_free_allocate(size_t n)
-		{ return GC_malloc_atomic_uncollectable(n); }
-	static void deallocate(void *p, size_t) { GC_free(p); }
-	static void ptr_free_deallocate(void *p, size_t) { GC_free(p); }
-};
-
-typedef traceable_alloc_template < 0 > traceable_alloc;
-
-// We want to specialize simple_alloc so that it does the right thing
-// for all pointerfree types.  At the moment there is no portable way to
-// even approximate that.  The following approximation should work for
-// SGI compilers, and recent versions of g++.
-
-# define __GC_SPECIALIZE(T,alloc) \
-class simple_alloc<T, alloc> { \
-public: \
-    static T *allocate(size_t n) \
-	{ return 0 == n? 0 : \
-			 reinterpret_cast<T*>(alloc::ptr_free_allocate(n * sizeof (T))); } \
-    static T *allocate(void) \
-	{ return reinterpret_cast<T*>(alloc::ptr_free_allocate(sizeof (T))); } \
-    static void deallocate(T *p, size_t n) \
-	{ if (0 != n) alloc::ptr_free_deallocate(p, n * sizeof (T)); } \
-    static void deallocate(T *p) \
-	{ alloc::ptr_free_deallocate(p, sizeof (T)); } \
-};
-
-__STL_BEGIN_NAMESPACE
-
-__GC_SPECIALIZE(char, gc_alloc)
-__GC_SPECIALIZE(int, gc_alloc)
-__GC_SPECIALIZE(unsigned, gc_alloc)
-__GC_SPECIALIZE(float, gc_alloc)
-__GC_SPECIALIZE(double, gc_alloc)
-
-__GC_SPECIALIZE(char, traceable_alloc)
-__GC_SPECIALIZE(int, traceable_alloc)
-__GC_SPECIALIZE(unsigned, traceable_alloc)
-__GC_SPECIALIZE(float, traceable_alloc)
-__GC_SPECIALIZE(double, traceable_alloc)
-
-__GC_SPECIALIZE(char, single_client_gc_alloc)
-__GC_SPECIALIZE(int, single_client_gc_alloc)
-__GC_SPECIALIZE(unsigned, single_client_gc_alloc)
-__GC_SPECIALIZE(float, single_client_gc_alloc)
-__GC_SPECIALIZE(double, single_client_gc_alloc)
-
-__GC_SPECIALIZE(char, single_client_traceable_alloc)
-__GC_SPECIALIZE(int, single_client_traceable_alloc)
-__GC_SPECIALIZE(unsigned, single_client_traceable_alloc)
-__GC_SPECIALIZE(float, single_client_traceable_alloc)
-__GC_SPECIALIZE(double, single_client_traceable_alloc)
-
-__STL_END_NAMESPACE
-
-#ifdef __STL_USE_STD_ALLOCATORS
-
-__STL_BEGIN_NAMESPACE
-
-template <class _Tp>
-struct _Alloc_traits<_Tp, gc_alloc >
-{
-  static const bool _S_instanceless = true;
-  typedef simple_alloc<_Tp, gc_alloc > _Alloc_type;
-  typedef __allocator<_Tp, gc_alloc > allocator_type;
-};
-
-inline bool operator==(const gc_alloc&,
-                       const gc_alloc&)
-{
-  return true;
-}
-
-inline bool operator!=(const gc_alloc&,
-                       const gc_alloc&)
-{
-  return false;
-}
-
-template <class _Tp>
-struct _Alloc_traits<_Tp, single_client_gc_alloc >
-{
-  static const bool _S_instanceless = true;
-  typedef simple_alloc<_Tp, single_client_gc_alloc > _Alloc_type;
-  typedef __allocator<_Tp, single_client_gc_alloc > allocator_type;
-};
-
-inline bool operator==(const single_client_gc_alloc&,
-                       const single_client_gc_alloc&)
-{
-  return true;
-}
-
-inline bool operator!=(const single_client_gc_alloc&,
-                       const single_client_gc_alloc&)
-{
-  return false;
-}
-
-template <class _Tp>
-struct _Alloc_traits<_Tp, traceable_alloc >
-{
-  static const bool _S_instanceless = true;
-  typedef simple_alloc<_Tp, traceable_alloc > _Alloc_type;
-  typedef __allocator<_Tp, traceable_alloc > allocator_type;
-};
-
-inline bool operator==(const traceable_alloc&,
-                       const traceable_alloc&)
-{
-  return true;
-}
-
-inline bool operator!=(const traceable_alloc&,
-                       const traceable_alloc&)
-{
-  return false;
-}
-
-template <class _Tp>
-struct _Alloc_traits<_Tp, single_client_traceable_alloc >
-{
-  static const bool _S_instanceless = true;
-  typedef simple_alloc<_Tp, single_client_traceable_alloc > _Alloc_type;
-  typedef __allocator<_Tp, single_client_traceable_alloc > allocator_type;
-};
-
-inline bool operator==(const single_client_traceable_alloc&,
-                       const single_client_traceable_alloc&)
-{
-  return true;
-}
-
-inline bool operator!=(const single_client_traceable_alloc&,
-                       const single_client_traceable_alloc&)
-{
-  return false;
-}
-
-__STL_END_NAMESPACE
-
-#endif /* __STL_USE_STD_ALLOCATORS */
-
-#endif /* GC_ALLOC_H */