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Re: [PATCH] New lang hook


On 11/16/2017 07:03 AM, Richard Biener wrote:

Looks reasonable apart from

+  /* Overwrite the DECL_ASSEMBLER_NAME for a node.  The name is being
+     changed (including to or from NULL_TREE).  */

which suggests the default implementation of set_decl_assembler_name would
call this hook (which it doesn't).  Any particular reason?  Maybe just document
(including to NULL_TREE), thus exclude from NULL_TREE?

As discussed on IRC, this variant calls the new hook from the default set_decl_assembler_name hook. Applying.

nathan

--
Nathan Sidwell
2017-11-16  Nathan Sidwell  <nathan@acm.org>

	PR c++/82836
	PR c++/82737
	* tree.h (COPY_DECL_RTL): Rename parms for clarity.
	(SET_DECL_ASSEMBLER_NAME): Forward to
	overwrite_decl_assembler_name.
	(COPY_DECL_ASSEMBLER_NAME): Rename parms for clarity.
	(overwrite_decl_assembler_name): Declare.
	* tree.c (overwrite_decl_assembler_name): New.
	* langhooks-def.h (lhd_overwrite_decl_assembler_name): Declare.
	(LANG_HOOKS_OVERWRITE_DECL_ASSEMBLER_NAME): Provide default.
	(LANG_HOOKS_INITIALIZER): Add it.
	* langhooks.h (struct lang_hooks): Add overwrite_decl_assembler_name.
	* langhooks.c (lhd_set_decl_assembler_name): Use
	SET_DECL_ASSEMBLER_NAME.
	(lhd_overwrite_decl_assembler_name): Default implementation.

	PR c++/82836
	PR c++/82737
	* cp-objcp-common.h (LANG_HOOKS_OVERWRITE_DECL_ASSEMBLER_NAME):
	Override.
	* cp-tree.h (overwrite_mangling): Declare.
	* decl2.c (struct mangled_decl_hash): Entries are deletable.
	(overwrite_mangling): New.

	PR c++/82836
	PR c++/82737
	* g++.dg/pr82836.C: New.

Index: cp/cp-objcp-common.h
===================================================================
--- cp/cp-objcp-common.h	(revision 254817)
+++ cp/cp-objcp-common.h	(working copy)
@@ -73,6 +73,8 @@ extern void cp_register_dumps (gcc::dump
 #define LANG_HOOKS_DUP_LANG_SPECIFIC_DECL cxx_dup_lang_specific_decl
 #undef LANG_HOOKS_SET_DECL_ASSEMBLER_NAME
 #define LANG_HOOKS_SET_DECL_ASSEMBLER_NAME mangle_decl
+#undef LANG_HOOKS_OVERWRITE_DECL_ASSEMBLER_NAME
+#define LANG_HOOKS_OVERWRITE_DECL_ASSEMBLER_NAME overwrite_mangling
 #undef LANG_HOOKS_PRINT_STATISTICS
 #define LANG_HOOKS_PRINT_STATISTICS cxx_print_statistics
 #undef LANG_HOOKS_PRINT_XNODE
Index: cp/cp-tree.h
===================================================================
--- cp/cp-tree.h	(revision 254817)
+++ cp/cp-tree.h	(working copy)
@@ -6187,6 +6187,7 @@ extern tree cxx_maybe_build_cleanup		(tr
 
 /* in decl2.c */
 extern void record_mangling			(tree, bool);
+extern void overwrite_mangling			(tree, tree);
 extern void note_mangling_alias			(tree, tree);
 extern void generate_mangling_aliases		(void);
 extern tree build_memfn_type			(tree, tree, cp_cv_quals, cp_ref_qualifier);
Index: cp/decl2.c
===================================================================
--- cp/decl2.c	(revision 254817)
+++ cp/decl2.c	(working copy)
@@ -123,9 +123,14 @@ struct mangled_decl_hash : ggc_remove <t
   static inline void mark_empty (value_type &p) {p = NULL_TREE;}
   static inline bool is_empty (value_type p) {return !p;}
 
-  /* Nothing is deletable.  Everything is insertable.  */
-  static bool is_deleted (value_type) { return false; }
-  static void mark_deleted (value_type) { gcc_unreachable (); }
+  static bool is_deleted (value_type e)
+  {
+    return e == reinterpret_cast <value_type> (1);
+  }
+  static void mark_deleted (value_type &e)
+  {
+    e = reinterpret_cast <value_type> (1);
+  }
 };
 
 /* A hash table of decls keyed by mangled name.  Used to figure out if
@@ -4439,6 +4444,33 @@ record_mangling (tree decl, bool need_wa
     }
 }
 
+/* The mangled name of DECL is being forcibly changed to NAME.  Remove
+   any existing knowledge of DECL's mangled name meaning DECL.  */
+
+void
+overwrite_mangling (tree decl, tree name)
+{
+  if (tree id = DECL_ASSEMBLER_NAME_RAW (decl))
+    if ((TREE_CODE (decl) == VAR_DECL
+	 || TREE_CODE (decl) == FUNCTION_DECL)
+	&& mangled_decls)
+      if (tree *slot
+	  = mangled_decls->find_slot_with_hash (id, IDENTIFIER_HASH_VALUE (id),
+						NO_INSERT))
+	if (*slot == decl)
+	  {
+	    mangled_decls->clear_slot (slot);
+
+	    /* If this is an alias, remove it from the symbol table.  */
+	    if (DECL_ARTIFICIAL (decl) && DECL_IGNORED_P (decl))
+	      if (symtab_node *n = symtab_node::get (decl))
+		if (n->cpp_implicit_alias)
+		  n->remove ();
+	  }
+
+  DECL_ASSEMBLER_NAME_RAW (decl) = name;
+}
+
 /* The entire file is now complete.  If requested, dump everything
    to a file.  */
 
Index: langhooks-def.h
===================================================================
--- langhooks-def.h	(revision 254817)
+++ langhooks-def.h	(working copy)
@@ -51,7 +51,8 @@ extern const char *lhd_dwarf_name (tree,
 extern int lhd_types_compatible_p (tree, tree);
 extern void lhd_print_error_function (diagnostic_context *,
 				      const char *, struct diagnostic_info *);
-extern void lhd_set_decl_assembler_name (tree);
+extern void lhd_set_decl_assembler_name (tree decl);
+extern void lhd_overwrite_decl_assembler_name (tree decl, tree name);
 extern bool lhd_warn_unused_global_decl (const_tree);
 extern tree lhd_type_for_size (unsigned precision, int unsignedp);
 extern void lhd_incomplete_type_error (location_t, const_tree, const_tree);
@@ -107,6 +108,7 @@ extern int lhd_type_dwarf_attribute (con
 #define LANG_HOOKS_FINISH_INCOMPLETE_DECL lhd_do_nothing_t
 #define LANG_HOOKS_DUP_LANG_SPECIFIC_DECL lhd_do_nothing_t
 #define LANG_HOOKS_SET_DECL_ASSEMBLER_NAME lhd_set_decl_assembler_name
+#define LANG_HOOKS_OVERWRITE_DECL_ASSEMBLER_NAME lhd_overwrite_decl_assembler_name
 #define LANG_HOOKS_PRINT_STATISTICS	lhd_do_nothing
 #define LANG_HOOKS_PRINT_XNODE		lhd_print_tree_nothing
 #define LANG_HOOKS_PRINT_DECL		lhd_print_tree_nothing
@@ -310,6 +312,7 @@ extern void lhd_end_section (void);
   LANG_HOOKS_FINISH_INCOMPLETE_DECL, \
   LANG_HOOKS_DUP_LANG_SPECIFIC_DECL, \
   LANG_HOOKS_SET_DECL_ASSEMBLER_NAME, \
+  LANG_HOOKS_OVERWRITE_DECL_ASSEMBLER_NAME, \
   LANG_HOOKS_PRINT_STATISTICS, \
   LANG_HOOKS_PRINT_XNODE, \
   LANG_HOOKS_PRINT_DECL, \
Index: langhooks.c
===================================================================
--- langhooks.c	(revision 254817)
+++ langhooks.c	(working copy)
@@ -171,8 +171,15 @@ lhd_set_decl_assembler_name (tree decl)
       ASM_FORMAT_PRIVATE_NAME (label, name, DECL_UID (decl));
       id = get_identifier (label);
     }
+
   SET_DECL_ASSEMBLER_NAME (decl, id);
+}
 
+/* Forcibly overwrite the DECL_ASSEMBLER_NAME for DECL to NAME.  */
+void
+lhd_overwrite_decl_assembler_name (tree decl, tree name)
+{
+  DECL_ASSEMBLER_NAME_RAW (decl) = name;
 }
 
 /* Type promotion for variable arguments.  */
Index: langhooks.h
===================================================================
--- langhooks.h	(revision 254817)
+++ langhooks.h	(working copy)
@@ -395,6 +395,10 @@ struct lang_hooks
      assembler does not talk about it.  */
   void (*set_decl_assembler_name) (tree);
 
+  /* Overwrite the DECL_ASSEMBLER_NAME for a node.  The name is being
+     changed (including to or from NULL_TREE).  */
+  void (*overwrite_decl_assembler_name) (tree, tree);
+
   /* The front end can add its own statistics to -fmem-report with
      this hook.  It should output to stderr.  */
   void (*print_statistics) (void);
Index: testsuite/g++.dg/pr82836.C
===================================================================
--- testsuite/g++.dg/pr82836.C	(revision 0)
+++ testsuite/g++.dg/pr82836.C	(working copy)
@@ -0,0 +1,628 @@
+// PR c++/82836
+// { dg-do compile { target c++17 } }
+// { dg-additional-options "-Wno-pedantic" }
+// We were resetting DECL_ASSEMBLER_NAME when processing pragma weak,
+// breaking C++'s mangling alias hash table.  That hash table needs to
+// be tickled in just the right way to hit the problem.
+
+namespace std {
+typedef long unsigned size_t;
+inline namespace __cxx11 {}
+double abs() {}
+__int128 abs(__int128 ) {}
+__float128 abs(__float128 ) {}
+
+  
+#pragma weak pthread_create
+typedef int luaL_Reg;
+typedef int swig_lua_const_info;
+typedef int swig_lua_attribute;
+typedef int swig_lua_class;
+}
+static int swig_types;
+static int swig_module;
+namespace std {
+  template < typename > class allocator;
+  template < class > struct char_traits;
+  namespace __cxx11 {
+  template < typename _CharT, typename =  _CharT ,
+             typename =  _CharT  >
+  class basic_string;
+  typedef basic_string< char > string;
+  }
+}
+namespace __gnu_cxx {
+  template < typename > struct __numeric_traits_integer;
+  struct __conditional_type {
+    typedef __numeric_traits_integer< int > __type;
+  }__is_null_pointer0;
+  template < typename _Value > struct __numeric_traits_integer {
+    static const _Value __min = 0;
+    static const _Value __max = 0;
+  };
+  template < typename _Value >
+  const _Value __numeric_traits_integer< _Value >::__min;
+  template < typename _Value >
+  const _Value __numeric_traits_integer< _Value >::__max;
+  template < typename >
+  struct __numeric_traits : __conditional_type::__type {};
+}
+namespace std {
+  template < typename _Tp, _Tp __v > struct integral_constant {
+    static constexpr _Tp value = __v;
+  };
+  template < typename _Tp, _Tp __v >
+  constexpr _Tp integral_constant< _Tp, __v >::value;
+  typedef integral_constant< bool, false > false_type;
+  struct __is_void_helper : false_type {};
+  struct is_void : __is_void_helper{};
+  template < int > struct conditional  ;
+  template < typename , typename ,
+             template < typename... > class >
+  struct __detector {
+       ;
+  };
+  template < typename _Default, template < typename > class _Op>
+  using __detected_or = __detector< _Default, void, _Op>;
+  template < typename _Default, template < typename> class _Op
+               >
+  using __detected_or_t =
+      typename __detected_or< _Default, _Op>::type;
+  struct  {}piecewise_construct ;
+  struct random_access_iterator_tag ;
+  template < typename , typename > struct iterator {
+    typedef int difference_type;
+    typedef int reference;
+  };
+  using __make_not_void = conditional< is_void::value >;
+      struct pointer_traits 
+    ;
+  
+  template <> struct char_traits< char > {
+    typedef char char_type;
+    typedef int int_type;
+    void assign() {}
+    bool eq() {}
+    bool lt() {}
+    int compare() {}
+    size_t length() {}
+    char_type find() {}
+    char_type move() {}
+    char_type copy() {}
+    char_type assign(char_type ) {}
+    char_type to_char_type() {}
+    int_type to_int_type() {}
+    bool eq_int_type() {}
+    int_type eof() {}
+    int_type not_eof() {}
+  };
+  template <> struct char_traits< wchar_t > {
+    typedef wchar_t char_type;
+    typedef int int_type;
+    void assign() {}
+    bool eq() {}
+    bool lt() {}
+    int compare() {}
+    size_t length() {}
+    char_type find() {}
+    char_type move() {}
+    char_type copy() {}
+    char_type assign(char_type ) {}
+    char_type to_char_type() {}
+    int_type to_int_type() {}
+    bool eq_int_type() {}
+    int_type eof() {}
+    int_type not_eof() {}
+  };
+}
+typedef int uint_least16_t;
+typedef int uint_least32_t;
+namespace std {
+template <> struct char_traits< char16_t > {
+  typedef char16_t char_type;
+  typedef uint_least16_t int_type;
+  void assign() {}
+  bool eq() {}
+  bool lt() {}
+  int compare() {}
+  size_t length() {}
+  char_type find() {}
+  char_type move() {}
+  char_type copy() {}
+  char_type assign(char_type ) {}
+  char_type to_char_type() {}
+  int_type to_int_type() {}
+  bool eq_int_type() {}
+  int_type eof() {}
+  int_type not_eof() {}
+};
+template <> struct char_traits< char32_t > {
+  typedef char32_t char_type;
+  typedef uint_least32_t int_type;
+  void assign() {}
+  bool eq() {}
+  bool lt() {}
+  int compare() {}
+  size_t length() {}
+  char_type find() {}
+  char_type move() {}
+  char_type copy() {}
+  char_type assign(char_type ) {}
+  char_type to_char_type() {}
+  int_type to_int_type() {}
+  bool eq_int_type() {}
+  int_type eof() {}
+  int_type not_eof() {}
+};
+}
+void *operator new(std::size_t) {}
+void *operator new[](std::size_t) {}
+void operator delete(void *){}
+void operator delete[](void *) {}
+namespace  {
+        ;
+}
+namespace std {
+
+template < typename  > class allocator {
+public:
+  
+  
+  ~allocator();
+}
+;
+template < typename _Tp >
+struct less {
+  bool operator()( _Tp ,  _Tp ) {}
+};
+}
+typedef int _Atomic_word;
+namespace {
+  _Atomic_word __exchange_and_add_single0;
+  static void __atomic_add_single();
+  _Atomic_word __attribute____exchange_and_add_dispatch0;
+  static void __attribute____atomic_add_dispatch();
+}
+namespace std {
+  struct __allocator_traits_base {
+    template < typename = void > struct __rebind {
+      using type =
+          allocator< char >;
+    }
+
+  ;
+  };
+  template < typename , typename >
+  using __alloc_rebind =
+      __allocator_traits_base::__rebind<>::type;
+  template < typename >
+  struct allocator_traits   {
+       
+    template < typename _Tp >
+    using rebind_alloc = __alloc_rebind<  char , _Tp >;
+  };
+}
+namespace __gnu_cxx {
+  template < typename >
+  struct __alloc_traits : std::allocator_traits< std::allocator< char > > {
+    template < typename > struct rebind {
+      typedef rebind_alloc< int >
+          other;
+    };
+  };
+}
+namespace std {
+  namespace __cxx11 {
+  template < typename , typename , typename >
+  class basic_string {
+    typedef __gnu_cxx::__alloc_traits<  char  >::
+        rebind< int >::other _Char_alloc_type
+    ;
+    struct  : _Char_alloc_type {}_M_dataplus;
+    int _S_compare() {
+      
+      if (__gnu_cxx::__numeric_traits< int >::__max)
+        
+       (__gnu_cxx::__numeric_traits< int >::__min)
+        ;
+    }
+  };
+  }
+  template < typename _CharT, typename _Traits, typename _Alloc >
+  basic_string<  _Traits> operator+(
+       basic_string<   _Alloc > );
+  template < typename _CharT, typename _Traits, typename _Alloc >
+  basic_string<  _Traits> operator+(
+        _Alloc  );
+  template < typename _CharT, typename _Traits, typename _Alloc >
+  basic_string<  _Traits> operator+(
+        _Alloc  );
+  template < typename , typename > struct __hash_base ;
+  template < typename > struct hash;
+  template <> struct hash< char > {
+    void operator0() {}
+  };
+  template <> struct hash< signed char > {
+    void operator0() {}
+  };
+  template <> struct hash< unsigned char > {
+    void operator0() {}
+  };
+  template <> struct hash< wchar_t > {
+    void operator0() {}
+  };
+  template <> struct __hash_base< size_t, char16_t > {
+    size_t operator0() {}
+  };
+  template <> struct __hash_base< size_t, char32_t > {
+    size_t operator0() {}
+  };
+  template <> struct hash< short > {
+    void operator0() {}
+  };
+  template <> struct hash< int > {
+    void operator0() {}
+  };
+  template <> struct hash< long > {
+    void operator0() {}
+  };
+  template <> struct hash< long long > {
+    void operator0() {}
+  };
+  template <> struct hash< unsigned short > {
+    void operator0() {}
+  };
+  template <> struct hash< unsigned > {
+    void operator0() {}
+  };
+  template <> struct hash< unsigned long > {
+    void operator0() {}
+  };
+  template <> struct hash< unsigned long long > {
+    void operator0() {}
+  };
+  template <> struct hash< __int128 > {
+    void operator0() {}
+  };
+  template <> struct hash< __int128 unsigned > {
+    void operator0() {}
+  };
+  typedef long _Bit_type;
+  struct _Bit_reference {
+     ;
+    _Bit_type _M_mask;
+    _Bit_reference  () {}
+    operator bool() {}
+    _Bit_reference (bool ) {}
+    _Bit_reference operator=(_Bit_reference ) {}
+    bool operator==(_Bit_reference ) {}
+    bool operator<(_Bit_reference ) {}
+    void flip() {}
+  };
+  void swap() {}
+  void swap(bool ) {}
+  void swap(_Bit_reference ) {}
+  struct _Bit_iterator_base
+      :iterator< random_access_iterator_tag, bool > {
+    _Bit_type *_M_p;
+    int _M_offset;
+    _Bit_iterator_base(_Bit_type *, int 
+         _M_offset) {}
+    void _M_bump_up() {}
+    void _M_bump_down() {}
+    void _M_incr() {}
+    bool operator==(_Bit_iterator_base ) {}
+    bool operator<(_Bit_iterator_base ) {}
+    bool operator!=(_Bit_iterator_base ) {}
+    bool operator>(_Bit_iterator_base ) {}
+    bool operator<=(_Bit_iterator_base ) {}
+    bool operator>=(_Bit_iterator_base ) {}
+  };
+  struct _Bit_iterator : _Bit_iterator_base {
+    _Bit_iterator() : _Bit_iterator_base(0, 0) {}
+    _Bit_iterator(_Bit_type *__x, int __y)
+        : _Bit_iterator_base(__x, __y) {}
+    iterator _M_const_cast() {}
+    iterator operator+() {}
+    iterator operator-() {}
+    reference operator[](difference_type ) {}
+  };
+  void operator+(_Bit_iterator ) {}
+  struct _Bit_const_iterator : _Bit_iterator_base {
+    _Bit_const_iterator() : _Bit_iterator_base(0, 0) {}
+    _Bit_type _Bit_const_iterator___x;
+    _Bit_const_iterator(int __y)
+        : _Bit_iterator_base(&_Bit_const_iterator___x, __y) {}
+    _Bit_const_iterator(_Bit_iterator __x)
+        : _Bit_iterator_base(_M_p, _M_offset) {}
+    void _M_const_cast() {}
+    void operator*() {}
+    void operator++() {}
+    void operator++(int) {}
+    void operator--() {}
+  };
+  class runtime_error {
+  public:
+    runtime_error(const string );
+  };
+  inline namespace _V2 {
+  class error_category {
+    bool operator<(error_category __other) {
+      less< error_category * >()(this, &__other);
+    }
+    bool operator==(error_category ) {}
+    bool operator!=(error_category ) {}
+  };
+  }
+  struct error_code {
+    error_code() : _M_cat() {}
+    error_code(error_category ) : _M_cat() {}
+    void assign() {}
+    void clear() {}
+    int value() {}
+    error_category category() {}
+    string message() {}
+    error_category _M_cat;
+  };
+  inline error_code make_error_code() noexcept {}
+  inline bool operator<(const error_code ,
+                        const error_code ) noexcept {}
+  struct error_condition {
+    error_condition() {}
+    error_condition(const error_category ) {}
+    void assign() noexcept {}
+    void clear() noexcept {}
+    int value() {}
+    const error_category &category() {}
+    string message_M_cat;
+  };
+  inline error_condition make_error_condition() noexcept {}
+  inline bool operator<(const error_condition ,
+                        const error_condition ) noexcept {}
+  inline bool operator==(const error_code ,
+                         const error_code ) noexcept {}
+  inline bool operator==(const error_code ,
+                         const error_condition ) noexcept {}
+  inline bool operator==(const error_condition ,
+                         const error_code ) noexcept {}
+  inline bool operator==(const error_condition ,
+                         const error_condition ) noexcept {}
+  inline bool operator!=(const error_code ,
+                         const error_code ) noexcept {}
+  inline bool operator!=(const error_code ,
+                         const error_condition ) noexcept {}
+  inline bool operator!=(const error_condition ,
+                         const error_code ) noexcept {}
+  inline bool operator!=(const error_condition ,
+                         const error_condition ) noexcept {}
+  class system_error : public runtime_error {
+  error_code _M_code;
+
+  system_error(error_code __ec = error_code())
+        : runtime_error(__ec.message()) {}
+    system_error(error_code __ec, const string &__what)
+        : runtime_error(__ec.message()) {}
+    system_error(error_code __ec, const char *__what)
+        : runtime_error((__ec.message())) {}
+    system_error(const char )
+        : system_error() {}
+    system_error(const error_category )
+        : runtime_error(error_code().message()) {}
+    system_error(const string &__what)
+        : runtime_error(error_code().message()) {}
+    const error_code &code() {}
+    void operator0() {}
+  };
+  enum _Ios_Fmtflags {};
+  _Ios_Fmtflags operator&(_Ios_Fmtflags __a__b) {}
+  _Ios_Fmtflags operator|(_Ios_Fmtflags __a,
+                                           _Ios_Fmtflags __b) {}
+  _Ios_Fmtflags operator^(_Ios_Fmtflags __a,
+                                           _Ios_Fmtflags __b) {}
+  _Ios_Fmtflags operator~(_Ios_Fmtflags __a) {}
+  _Ios_Fmtflags &operator|=(_Ios_Fmtflags ,
+                                         _Ios_Fmtflags __b) {}
+  _Ios_Fmtflags &operator&=(_Ios_Fmtflags ,
+                                         _Ios_Fmtflags __b) {}
+  _Ios_Fmtflags &operator^=(_Ios_Fmtflags ,
+                                         _Ios_Fmtflags __b) {}
+  enum _Ios_Openmode {
+    _S_ios_openmode_max };
+  _Ios_Openmode operator&(_Ios_Openmode __a__b) {}
+  _Ios_Openmode operator|(_Ios_Openmode __a,
+                                           _Ios_Openmode __b) {}
+  _Ios_Openmode operator^(_Ios_Openmode __a,
+                                           _Ios_Openmode __b) {}
+  _Ios_Openmode operator~(_Ios_Openmode __a) {}
+  _Ios_Openmode &operator|=(_Ios_Openmode ,
+                                         _Ios_Openmode __b) {}
+  _Ios_Openmode &operator&=(_Ios_Openmode ,
+                                         _Ios_Openmode __b) {}
+  _Ios_Openmode &operator^=(_Ios_Openmode ,
+                                         _Ios_Openmode __b) {}
+  enum _Ios_Iostate {
+    _S_ios_iostate_max };
+  _Ios_Iostate operator&(_Ios_Iostate __a__b) {}
+  _Ios_Iostate operator|(_Ios_Iostate __a, _Ios_Iostate __b) {}
+  _Ios_Iostate operator^(_Ios_Iostate __a, _Ios_Iostate __b) {}
+  _Ios_Iostate operator~(_Ios_Iostate __a) {}
+  _Ios_Iostate &operator|=(_Ios_Iostate , _Ios_Iostate __b) {}
+  _Ios_Iostate &operator&=(_Ios_Iostate , _Ios_Iostate __b) {}
+  _Ios_Iostate &operator^=(_Ios_Iostate , _Ios_Iostate __b) {}
+  enum class io_errc;
+  inline error_code make_error_code(io_errc __e) noexcept {}
+  inline error_condition make_error_condition_wrap_class_string;
+static luaL_Reg swig_ClientProfile_methods;
+static luaL_Reg swig_ClientProfile_meta;
+static swig_lua_attribute swig_ClientProfile_Sf_SwigStatic_attributes;
+static swig_lua_const_info swig_ClientProfile_Sf_SwigStatic_constants;
+static luaL_Reg swig_ClientProfile_Sf_SwigStatic_methods;
+static swig_lua_class swig_ClientProfile_Sf_SwigStatic_classes;
+static int swig_ClientProfile_Sf_SwigStatic;
+static swig_lua_class swig_ClientProfile_bases;
+static const char *swig_ClientProfile_base_names;
+static swig_lua_class _wrap_class_ClientProfile;
+static int _proxy__wrap_new_Connection0;
+static swig_lua_attribute swig_Connection_attributes;
+static luaL_Reg swig_Connection_methods;
+static luaL_Reg swig_Connection_meta;
+static swig_lua_attribute swig_Connection_Sf_SwigStatic_attributes;
+static swig_lua_const_info swig_Connection_Sf_SwigStatic_constants;
+static luaL_Reg swig_Connection_Sf_SwigStatic_methods;
+static swig_lua_class swig_Connection_Sf_SwigStatic_classes;
+static int swig_Connection_Sf_SwigStatic;
+static swig_lua_class swig_Connection_bases;
+static const char swig_Connection_base_names = 0;
+static swig_lua_class _wrap_class_Connection;
+static int _proxy__wrap_new_ConnectionPool0;
+static swig_lua_attribute swig_ConnectionPool_attributes;
+static luaL_Reg swig_ConnectionPool_methods;
+static luaL_Reg swig_ConnectionPool_meta;
+static swig_lua_attribute swig_ConnectionPool_Sf_SwigStatic_attributes;
+static swig_lua_const_info swig_ConnectionPool_Sf_SwigStatic_constants;
+static luaL_Reg swig_ConnectionPool_Sf_SwigStatic_methods;
+static swig_lua_class swig_ConnectionPool_Sf_SwigStatic_classes;
+static int swig_ConnectionPool_Sf_SwigStatic;
+static swig_lua_class *swig_ConnectionPool_bases ;
+static const char *swig_ConnectionPool_base_names ;
+static swig_lua_class _wrap_class_ConnectionPool;
+static int _proxy__wrap_new_Client0;
+static swig_lua_attribute swig_Client_attributes;
+static luaL_Reg swig_Client_methods;
+static luaL_Reg swig_Client_meta;
+static swig_lua_attribute swig_Client_Sf_SwigStatic_attributes;
+static swig_lua_const_info swig_Client_Sf_SwigStatic_constants;
+static luaL_Reg swig_Client_Sf_SwigStatic_methods;
+static swig_lua_class swig_Client_Sf_SwigStatic_classes;
+static int swig_Client_Sf_SwigStatic;
+static swig_lua_class *swig_Client_bases;
+static const char *swig_Client_base_names;
+static swig_lua_class _wrap_class_Client;
+static int _proxy__wrap_new_PreludeLog0;
+static swig_lua_attribute swig_PreludeLog_attributes;
+static luaL_Reg swig_PreludeLog_methods;
+static luaL_Reg swig_PreludeLog_meta;
+static swig_lua_attribute swig_PreludeLog_Sf_SwigStatic_attributes;
+static swig_lua_const_info swig_PreludeLog_Sf_SwigStatic_constants;
+static luaL_Reg swig_PreludeLog_Sf_SwigStatic_methods;
+static swig_lua_class swig_PreludeLog_Sf_SwigStatic_classes;
+static int swig_PreludeLog_Sf_SwigStatic;
+static swig_lua_class swig_PreludeLog_bases;
+static const char *swig_PreludeLog_base_names;
+static swig_lua_class _wrap_class_PreludeLog;
+static int _proxy__wrap_new_PreludeError0;
+static swig_lua_attribute swig_PreludeError_attributes;
+static luaL_Reg swig_PreludeError_methods;
+static luaL_Reg swig_PreludeError_meta;
+static swig_lua_attribute swig_PreludeError_Sf_SwigStatic_attributes;
+static swig_lua_const_info swig_PreludeError_Sf_SwigStatic_constants;
+static luaL_Reg swig_PreludeError_Sf_SwigStatic_methods;
+static swig_lua_class swig_PreludeError_Sf_SwigStatic_classes;
+static int swig_PreludeError_Sf_SwigStatic;
+static swig_lua_class swig_PreludeError_bases;
+static const char *swig_PreludeError_base_names;
+static swig_lua_class _wrap_class_PreludeError;
+static int _proxy__wrap_new_ClientEasy0;
+static swig_lua_attribute swig_ClientEasy_attributes;
+static luaL_Reg swig_ClientEasy_methods;
+static luaL_Reg swig_ClientEasy_meta;
+static swig_lua_attribute swig_ClientEasy_Sf_SwigStatic_attributes;
+static swig_lua_const_info swig_ClientEasy_Sf_SwigStatic_constants;
+static luaL_Reg swig_ClientEasy_Sf_SwigStatic_methods;
+static swig_lua_class swig_ClientEasy_Sf_SwigStatic_classes;
+static int swig_ClientEasy_Sf_SwigStatic;
+static swig_lua_class *swig_ClientEasy_bases;
+static const char *swig_ClientEasy_base_names;
+static swig_lua_class _wrap_class_ClientEasy;
+static int _proxy__wrap_new_IDMEFCriterion0;
+static swig_lua_attribute swig_IDMEFCriterion_attributes;
+static luaL_Reg swig_IDMEFCriterion_methods;
+static luaL_Reg swig_IDMEFCriterion_meta;
+static swig_lua_attribute swig_IDMEFCriterion_Sf_SwigStatic_attributes;
+static swig_lua_const_info swig_IDMEFCriterion_Sf_SwigStatic_constants;
+static luaL_Reg swig_IDMEFCriterion_Sf_SwigStatic_methods;
+static swig_lua_class swig_IDMEFCriterion_Sf_SwigStatic_classes;
+static int swig_IDMEFCriterion_Sf_SwigStatic;
+static swig_lua_class swig_IDMEFCriterion_bases;
+static const char *swig_IDMEFCriterion_base_names;
+static swig_lua_class _wrap_class_IDMEFCriterion;
+static int _proxy__wrap_new_IDMEFCriteria0;
+static swig_lua_attribute swig_IDMEFCriteria_attributes;
+static luaL_Reg swig_IDMEFCriteria_methods;
+static luaL_Reg swig_IDMEFCriteria_meta;
+static swig_lua_attribute swig_IDMEFCriteria_Sf_SwigStatic_attributes;
+static swig_lua_const_info swig_IDMEFCriteria_Sf_SwigStatic_constants;
+static luaL_Reg swig_IDMEFCriteria_Sf_SwigStatic_methods;
+static swig_lua_class swig_IDMEFCriteria_Sf_SwigStatic_classes;
+static int swig_IDMEFCriteria_Sf_SwigStatic;
+static swig_lua_class swig_IDMEFCriteria_bases;
+static const char *swig_IDMEFCriteria_base_names;
+static swig_lua_class _wrap_class_IDMEFCriteria;
+static int _proxy__wrap_new_IDMEFValue0;
+static swig_lua_attribute swig_IDMEFValue_attributes;
+static luaL_Reg swig_IDMEFValue_methods;
+static luaL_Reg swig_IDMEFValue_meta;
+static swig_lua_attribute swig_IDMEFValue_Sf_SwigStatic_attributes;
+static swig_lua_const_info swig_IDMEFValue_Sf_SwigStatic_constants;
+static luaL_Reg swig_IDMEFValue_Sf_SwigStatic_methods;
+static swig_lua_class swig_IDMEFValue_Sf_SwigStatic_classes;
+static int swig_IDMEFValue_Sf_SwigStatic;
+static swig_lua_class swig_IDMEFValue_bases;
+static const char *swig_IDMEFValue_base_names;
+static swig_lua_class _wrap_class_IDMEFValue;
+static int _proxy__wrap_new_IDMEFPath0;
+static swig_lua_attribute swig_IDMEFPath_attributes;
+static luaL_Reg swig_IDMEFPath_methods;
+static luaL_Reg swig_IDMEFPath_meta;
+static swig_lua_attribute swig_IDMEFPath_Sf_SwigStatic_attributes;
+static swig_lua_const_info swig_IDMEFPath_Sf_SwigStatic_constants;
+static luaL_Reg swig_IDMEFPath_Sf_SwigStatic_methods;
+static swig_lua_class swig_IDMEFPath_Sf_SwigStatic_classes;
+static int swig_IDMEFPath_Sf_SwigStatic;
+static swig_lua_class swig_IDMEFPath_bases;
+static const char *swig_IDMEFPath_base_names;
+static swig_lua_class _wrap_class_IDMEFPath;
+static int _proxy__wrap_new_IDMEFTime0;
+static swig_lua_attribute swig_IDMEFTime_attributes;
+static luaL_Reg swig_IDMEFTime_methods;
+static luaL_Reg swig_IDMEFTime_meta;
+static swig_lua_attribute swig_IDMEFTime_Sf_SwigStatic_attributes;
+static swig_lua_const_info swig_IDMEFTime_Sf_SwigStatic_constants;
+static luaL_Reg swig_IDMEFTime_Sf_SwigStatic_methods;
+static swig_lua_class swig_IDMEFTime_Sf_SwigStatic_classes;
+static int swig_IDMEFTime_Sf_SwigStatic;
+static swig_lua_class swig_IDMEFTime_bases;
+static const char *swig_IDMEFTime_base_names;
+static swig_lua_class _wrap_class_IDMEFTime;
+static int _proxy__wrap_new_IDMEFClass0;
+static swig_lua_attribute swig_IDMEFClass_attributes;
+static luaL_Reg swig_IDMEFClass_methods;
+static luaL_Reg swig_IDMEFClass_meta;
+static swig_lua_attribute swig_IDMEFClass_Sf_SwigStatic_attributes;
+static swig_lua_const_info swig_IDMEFClass_Sf_SwigStatic_constants;
+static luaL_Reg swig_IDMEFClass_Sf_SwigStatic_methods;
+static swig_lua_class swig_IDMEFClass_Sf_SwigStatic_classes;
+static int swig_IDMEFClass_Sf_SwigStatic;
+static swig_lua_class swig_IDMEFClass_bases;
+static const char *swig_IDMEFClass_base_names;
+static swig_lua_class _wrap_class_IDMEFClass;
+static int _proxy__wrap_new_IDMEF0;
+static swig_lua_attribute swig_IDMEF_attributes;
+static luaL_Reg swig_IDMEF_methods;
+static luaL_Reg swig_IDMEF_meta;
+static swig_lua_attribute swig_IDMEF_Sf_SwigStatic_attributes;
+static swig_lua_const_info swig_IDMEF_Sf_SwigStatic_constants;
+static luaL_Reg swig_IDMEF_Sf_SwigStatic_methods;
+static swig_lua_class swig_IDMEF_Sf_SwigStatic_classes;
+static int swig_IDMEF_Sf_SwigStatic;
+static swig_lua_class swig_IDMEF_bases;
+static const char *swig_IDMEF_base_names;
+static swig_lua_class _wrap_class_IDMEF;
+static swig_lua_attribute swig_SwigModule_attributes;
+static swig_lua_const_info swig_SwigModule_constants;
+static luaL_Reg swig_SwigModule_methods;
+static swig_lua_class *swig_SwigModule_classes;
+static int swig_SwigModule_namespaces;
+static int swig_SwigModule;
+}
+static void *_p_Prelude__ClientTo_p_Prelude__ClientProfile0;
Index: tree.c
===================================================================
--- tree.c	(revision 254817)
+++ tree.c	(working copy)
@@ -674,6 +674,17 @@ decl_assembler_name (tree decl)
   return DECL_ASSEMBLER_NAME_RAW (decl);
 }
 
+/* The DECL_ASSEMBLER_NAME_RAW of DECL is being explicitly set to NAME
+   (either of which may be NULL).  Inform the FE, if this changes the
+   name.  */
+
+void
+overwrite_decl_assembler_name (tree decl, tree name)
+{
+  if (DECL_ASSEMBLER_NAME_RAW (decl) != name)
+    lang_hooks.overwrite_decl_assembler_name (decl, name);
+}
+
 /* When the target supports COMDAT groups, this indicates which group the
    DECL is associated with.  This can be either an IDENTIFIER_NODE or a
    decl, in which case its DECL_ASSEMBLER_NAME identifies the group.  */
Index: tree.h
===================================================================
--- tree.h	(revision 254817)
+++ tree.h	(working copy)
@@ -2528,11 +2528,11 @@ extern void decl_value_expr_insert (tree
 #define DECL_RTL_SET_P(NODE) \
   (HAS_RTL_P (NODE) && DECL_WRTL_CHECK (NODE)->decl_with_rtl.rtl != NULL)
 
-/* Copy the RTL from NODE1 to NODE2.  If the RTL was not set for
-   NODE1, it will not be set for NODE2; this is a lazy copy.  */
-#define COPY_DECL_RTL(NODE1, NODE2) \
-  (DECL_WRTL_CHECK (NODE2)->decl_with_rtl.rtl \
-   = DECL_WRTL_CHECK (NODE1)->decl_with_rtl.rtl)
+/* Copy the RTL from SRC_DECL to DST_DECL.  If the RTL was not set for
+   SRC_DECL, it will not be set for DST_DECL; this is a lazy copy.  */
+#define COPY_DECL_RTL(SRC_DECL, DST_DECL) \
+  (DECL_WRTL_CHECK (DST_DECL)->decl_with_rtl.rtl \
+   = DECL_WRTL_CHECK (SRC_DECL)->decl_with_rtl.rtl)
 
 /* The DECL_RTL for NODE, if it is set, or NULL, if it is not set.  */
 #define DECL_RTL_IF_SET(NODE) (DECL_RTL_SET_P (NODE) ? DECL_RTL (NODE) : NULL)
@@ -2723,19 +2723,21 @@ extern void decl_value_expr_insert (tree
 
 /* Set the DECL_ASSEMBLER_NAME for NODE to NAME.  */
 #define SET_DECL_ASSEMBLER_NAME(NODE, NAME) \
-  (DECL_ASSEMBLER_NAME_RAW (NODE) = (NAME))
+  overwrite_decl_assembler_name (NODE, NAME)
 
-/* Copy the DECL_ASSEMBLER_NAME from DECL1 to DECL2.  Note that if DECL1's
-   DECL_ASSEMBLER_NAME has not yet been set, using this macro will not cause
-   the DECL_ASSEMBLER_NAME of either DECL to be set.  In other words, the
-   semantics of using this macro, are different than saying:
+/* Copy the DECL_ASSEMBLER_NAME from SRC_DECL to DST_DECL.  Note that
+   if SRC_DECL's DECL_ASSEMBLER_NAME has not yet been set, using this
+   macro will not cause the DECL_ASSEMBLER_NAME to be set, but will
+   clear DECL_ASSEMBLER_NAME of DST_DECL, if it was already set.  In
+   other words, the semantics of using this macro, are different than
+   saying:
 
-     SET_DECL_ASSEMBLER_NAME(DECL2, DECL_ASSEMBLER_NAME (DECL1))
+     SET_DECL_ASSEMBLER_NAME(DST_DECL, DECL_ASSEMBLER_NAME (SRC_DECL))
 
-   which will try to set the DECL_ASSEMBLER_NAME for DECL1.  */
+   which will try to set the DECL_ASSEMBLER_NAME for SRC_DECL.  */
 
-#define COPY_DECL_ASSEMBLER_NAME(DECL1, DECL2)				\
-  SET_DECL_ASSEMBLER_NAME (DECL2, DECL_ASSEMBLER_NAME_RAW (DECL1))
+#define COPY_DECL_ASSEMBLER_NAME(SRC_DECL, DST_DECL)			\
+  SET_DECL_ASSEMBLER_NAME (DST_DECL, DECL_ASSEMBLER_NAME_RAW (SRC_DECL))
 
 /* Records the section name in a section attribute.  Used to pass
    the name from decl_attributes to make_function_rtl and make_decl_rtl.  */
@@ -3872,6 +3874,7 @@ id_equal (const char *str, const_tree id
    || ((NODE) && TREE_TYPE ((NODE)) == error_mark_node))
 
 extern tree decl_assembler_name (tree);
+extern void overwrite_decl_assembler_name (tree decl, tree name);
 extern tree decl_comdat_group (const_tree);
 extern tree decl_comdat_group_id (const_tree);
 extern const char *decl_section_name (const_tree);

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