[libc++] Introduce __debug_db_insert_c()

[philnik]

Summary

There are a lot of

#if _LIBCPP_DEBUG_LEVEL == 2
    __get_db()->__insert_c(this);
#endif

This patch introduces __debug_db_insert_c() to put the #if in one central place.

[ldionne]

libcxx/include/__debug

272

You also probably want to make it constexpr after C++11?

libcxx/include/list

856

All of these calls should be _VSTD::__debug_db_insert_c.

[philnik]

• Address comments

[• Quuxplusone]

@ldionne has already accepted, but FWIW, I would have said let's not introduce a new function-call layer of indirection for this, because that harms -O0 codegen (not that we really care about -O0 codegen). I would have suggested a macro, or just not doing this at all. Food for thought maybe?

[ldionne]

In D116947#3231722, @Quuxplusone wrote:

@ldionne has already accepted, but FWIW, I would have said let's not introduce a new function-call layer of indirection for this, because that harms -O0 codegen (not that we really care about -O0 codegen). I would have suggested a macro, or just not doing this at all. Food for thought maybe?

IMO we should try not to use macros when we have an easy alternative. And as you said, codegen at -O0 is not something that has a lot of weigh in the balance. I certainly wouldn't want to start making regular decisions based on that, at least.

[philnik]

We could add _LIBCPP_ALWAYS_INLINE. That eliminates the function call even at -O0 (https://godbolt.org/z/PffnTM9P5). But I personally wouldn't really want to do that.

[philnik]

• Add <type_traits> include
• Make __debug_db_insert_c a template to forward the type

[• Quuxplusone]

libcxx/include/__debug

15

Is this for __libcpp_is_constant_evaluated? Might it make sense to move __libcpp_is_constant_evaluated into <__config>?

273

and perhaps _LIBCPP_ALWAYS_INLINE as we discussed? (I'm still neutral/ambivalent — seems like an easy but also maybe negligible win.)

[philnik]

libcxx/include/__debug

15

Yes. But I don't think it should be in <__config>. It's not really a config. Maybe in something like __type_traits/is_contant_evaulated.h?

273

I'd like to hear what @ldionne thinks about this. I'm not really sold on the idea unless we have some general guidelines when to use _LIBCPP_ALWAYS_INLINE or something similar.

[ldionne]

libcxx/include/__debug

15

I would definitely not move it to __config. If anything, I would put it in __type_traits/is_constant_evaluated.h as suggested.

273

I would avoid sprinkling _LIBCPP_ALWAYS_INLINE unless we have very good reasons to. It's just a bad habit to take. I am confident that the optimizer will see this and inline it when debugging is disabled. When debugging is enabled, it doesn't really matter as much.

libcxx/include/__debug

 // -*- C++ -*-
 //===----------------------------------------------------------------------===//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 // See https://llvm.org/LICENSE.txt for license information.
 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 //
 //===----------------------------------------------------------------------===//
 
 #ifndef _LIBCPP_DEBUG_H
 #define _LIBCPP_DEBUG_H
 
 #include <__config>
 #include <iosfwd>
+#include <type_traits>
 
 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 #pragma GCC system_header
 #endif
 
 #if defined(_LIBCPP_HAS_NO_NULLPTR)
 # include <cstddef>
 #endif

 };
 
 _LIBCPP_FUNC_VIS __libcpp_db* __get_db();
 _LIBCPP_FUNC_VIS const __libcpp_db* __get_const_db();
 
 
 #endif // _LIBCPP_DEBUG_LEVEL == 2 || defined(_LIBCPP_BUILDING_LIBRARY)
 
+template <class _Tp>
+_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX11 inline void __debug_db_insert_c(_Tp* __c) {
+#if _LIBCPP_DEBUG_LEVEL == 2
+    if (!__libcpp_is_constant_evaluated())
+        __get_db()->__insert_c(__c);
+#else
+    (void)(__c);
+#endif
+}
+
 _LIBCPP_END_NAMESPACE_STD
 
 #endif // _LIBCPP_DEBUG_H

libcxx/include/list

 #else
     typedef void                                           __remove_return_type;
 #endif
 
     _LIBCPP_INLINE_VISIBILITY
     list()
         _NOEXCEPT_(is_nothrow_default_constructible<__node_allocator>::value)
     {
-#if _LIBCPP_DEBUG_LEVEL == 2
-        __get_db()->__insert_c(this);
-#endif
+        _VSTD::__debug_db_insert_c(this);
     }
     _LIBCPP_INLINE_VISIBILITY
     explicit list(const allocator_type& __a) : base(__a)
     {
-#if _LIBCPP_DEBUG_LEVEL == 2
-        __get_db()->__insert_c(this);
-#endif
+        _VSTD::__debug_db_insert_c(this);
     }
     explicit list(size_type __n);
 #if _LIBCPP_STD_VER > 11
     explicit list(size_type __n, const allocator_type& __a);
 #endif
     list(size_type __n, const value_type& __x);
     template <class = __enable_if_t<__is_allocator<_Alloc>::value> >
     list(size_type __n, const value_type& __x, const allocator_type& __a) : base(__a)
     {
-#if _LIBCPP_DEBUG_LEVEL == 2
-        __get_db()->__insert_c(this);
-#endif
+        _VSTD::__debug_db_insert_c(this);
         for (; __n > 0; --__n)
             push_back(__x);
     }
 
     template <class _InpIter>
         list(_InpIter __f, _InpIter __l,
              typename enable_if<__is_cpp17_input_iterator<_InpIter>::value>::type* = 0);
     template <class _InpIter>

 {
     return __n <= base::__sz() / 2 ? _VSTD::next(begin(), __n)
                                    : _VSTD::prev(end(), base::__sz() - __n);
 }
 
 template <class _Tp, class _Alloc>
 list<_Tp, _Alloc>::list(size_type __n)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     for (; __n > 0; --__n)
 #ifndef _LIBCPP_CXX03_LANG
         emplace_back();
 #else
         push_back(value_type());
 #endif
 }
 
 #if _LIBCPP_STD_VER > 11
 template <class _Tp, class _Alloc>
 list<_Tp, _Alloc>::list(size_type __n, const allocator_type& __a) : base(__a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     for (; __n > 0; --__n)
         emplace_back();
 }
 #endif
 
 template <class _Tp, class _Alloc>
 list<_Tp, _Alloc>::list(size_type __n, const value_type& __x)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     for (; __n > 0; --__n)
         push_back(__x);
 }
 
 template <class _Tp, class _Alloc>
 template <class _InpIter>
 list<_Tp, _Alloc>::list(_InpIter __f, _InpIter __l,
                         typename enable_if<__is_cpp17_input_iterator<_InpIter>::value>::type*)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     for (; __f != __l; ++__f)
         __emplace_back(*__f);
 }
 
 template <class _Tp, class _Alloc>
 template <class _InpIter>
 list<_Tp, _Alloc>::list(_InpIter __f, _InpIter __l, const allocator_type& __a,
                         typename enable_if<__is_cpp17_input_iterator<_InpIter>::value>::type*)
     : base(__a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     for (; __f != __l; ++__f)
         __emplace_back(*__f);
 }
 
 template <class _Tp, class _Alloc>
 list<_Tp, _Alloc>::list(const list& __c)
     : base(__node_alloc_traits::select_on_container_copy_construction(
           __c.__node_alloc())) {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     for (const_iterator __i = __c.begin(), __e = __c.end(); __i != __e; ++__i)
         push_back(*__i);
 }
 
 template <class _Tp, class _Alloc>
 list<_Tp, _Alloc>::list(const list& __c, const __identity_t<allocator_type>& __a)
     : base(__a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     for (const_iterator __i = __c.begin(), __e = __c.end(); __i != __e; ++__i)
         push_back(*__i);
 }
 
 #ifndef _LIBCPP_CXX03_LANG
 
 template <class _Tp, class _Alloc>
 list<_Tp, _Alloc>::list(initializer_list<value_type> __il, const allocator_type& __a)
     : base(__a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     for (typename initializer_list<value_type>::const_iterator __i = __il.begin(),
             __e = __il.end(); __i != __e; ++__i)
         push_back(*__i);
 }
 
 template <class _Tp, class _Alloc>
 list<_Tp, _Alloc>::list(initializer_list<value_type> __il)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     for (typename initializer_list<value_type>::const_iterator __i = __il.begin(),
             __e = __il.end(); __i != __e; ++__i)
         push_back(*__i);
 }
 
 template <class _Tp, class _Alloc>
 inline list<_Tp, _Alloc>::list(list&& __c)
         _NOEXCEPT_(is_nothrow_move_constructible<__node_allocator>::value)
         : base(_VSTD::move(__c.__node_alloc())) {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     splice(end(), __c);
 }
 
 template <class _Tp, class _Alloc>
 inline
 list<_Tp, _Alloc>::list(list&& __c, const __identity_t<allocator_type>& __a)
     : base(__a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     if (__a == __c.get_allocator())
         splice(end(), __c);
     else
     {
         typedef move_iterator<iterator> _Ip;
         assign(_Ip(__c.begin()), _Ip(__c.end()));
     }
 }

libcxx/include/string

#endif
     basic_string(basic_string&& __str, const allocator_type& __a);
 #endif // _LIBCPP_CXX03_LANG
 
     template <class = __enable_if_t<__is_allocator<_Allocator>::value, nullptr_t> >
     _LIBCPP_INLINE_VISIBILITY
     basic_string(const _CharT* __s) : __r_(__default_init_tag(), __default_init_tag()) {
       _LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*) detected nullptr");
       __init(__s, traits_type::length(__s));
-#if _LIBCPP_DEBUG_LEVEL == 2
-        if (!__libcpp_is_constant_evaluated())
-            __get_db()->__insert_c(this);
-#endif
+      _VSTD::__debug_db_insert_c(this);
     }
 
     template <class = __enable_if_t<__is_allocator<_Allocator>::value, nullptr_t> >
         _LIBCPP_INLINE_VISIBILITY
         basic_string(const _CharT* __s, const _Allocator& __a);
 
 #if _LIBCPP_STD_VER > 20
     basic_string(nullptr_t) = delete;

 }
 
 template <class _CharT, class _Traits, class _Allocator>
 inline
 basic_string<_CharT, _Traits, _Allocator>::basic_string()
     _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value)
      : __r_(__default_init_tag(), __default_init_tag())
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    if (!__libcpp_is_constant_evaluated())
-        __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __zero();
 }
 
 template <class _CharT, class _Traits, class _Allocator>
 inline
 basic_string<_CharT, _Traits, _Allocator>::basic_string(const allocator_type& __a)
 #if _LIBCPP_STD_VER <= 14
         _NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value)
 #else
         _NOEXCEPT
 #endif
 : __r_(__default_init_tag(), __a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    if (!__libcpp_is_constant_evaluated())
-        __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __zero();
 }
 
 template <class _CharT, class _Traits, class _Allocator>
 void basic_string<_CharT, _Traits, _Allocator>::__init(const value_type* __s,
                                                        size_type __sz,
                                                        size_type __reserve)
 {

 
 template <class _CharT, class _Traits, class _Allocator>
 template <class>
 basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, const _Allocator& __a)
     : __r_(__default_init_tag(), __a)
 {
     _LIBCPP_ASSERT(__s != nullptr, "basic_string(const char*, allocator) detected nullptr");
     __init(__s, traits_type::length(__s));
-#if _LIBCPP_DEBUG_LEVEL == 2
-    if (!__libcpp_is_constant_evaluated())
-        __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
 }
 
 template <class _CharT, class _Traits, class _Allocator>
 inline
 basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, size_type __n)
      : __r_(__default_init_tag(), __default_init_tag())
 {
-      _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n) detected nullptr");
-      __init(__s, __n);
-#if _LIBCPP_DEBUG_LEVEL == 2
-    if (!__libcpp_is_constant_evaluated())
-        __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
 }
 
 template <class _CharT, class _Traits, class _Allocator>
 inline
 basic_string<_CharT, _Traits, _Allocator>::basic_string(const _CharT* __s, size_type __n, const _Allocator& __a)
     : __r_(__default_init_tag(), __a)
 {
     _LIBCPP_ASSERT(__n == 0 || __s != nullptr, "basic_string(const char*, n, allocator) detected nullptr");
     __init(__s, __n);
-#if _LIBCPP_DEBUG_LEVEL == 2
-    if (!__libcpp_is_constant_evaluated())
-        __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
 }
 
 template <class _CharT, class _Traits, class _Allocator>
 basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str)
     : __r_(__default_init_tag(), __alloc_traits::select_on_container_copy_construction(__str.__alloc()))
 {
     if (!__str.__is_long())
         __r_.first().__r = __str.__r_.first().__r;
     else
         __init_copy_ctor_external(_VSTD::__to_address(__str.__get_long_pointer()),
                                   __str.__get_long_size());
-
-#if _LIBCPP_DEBUG_LEVEL == 2
-    if (!__libcpp_is_constant_evaluated())
-        __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
 }
 
 template <class _CharT, class _Traits, class _Allocator>
 basic_string<_CharT, _Traits, _Allocator>::basic_string(
     const basic_string& __str, const allocator_type& __a)
     : __r_(__default_init_tag(), __a)
 {
     if (!__str.__is_long())
         __r_.first().__r = __str.__r_.first().__r;
     else
         __init_copy_ctor_external(_VSTD::__to_address(__str.__get_long_pointer()),
                                   __str.__get_long_size());
-#if _LIBCPP_DEBUG_LEVEL == 2
-    if (!__libcpp_is_constant_evaluated())
-        __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
 }
 
 template <class _CharT, class _Traits, class _Allocator>
 void basic_string<_CharT, _Traits, _Allocator>::__init_copy_ctor_external(
     const value_type* __s, size_type __sz) {
   pointer __p;
   if (__sz < __min_cap) {
     __p = __get_short_pointer();

 #if _LIBCPP_STD_VER <= 14
         _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value)
 #else
         _NOEXCEPT
 #endif
     : __r_(_VSTD::move(__str.__r_))
 {
     __str.__zero();
+    _VSTD::__debug_db_insert_c(this);
 #if _LIBCPP_DEBUG_LEVEL == 2
-    if (!__libcpp_is_constant_evaluated()) {
-        __get_db()->__insert_c(this);
-        if (__is_long())
-            __get_db()->swap(this, &__str);
-    }
+    if (!__libcpp_is_constant_evaluated() && __is_long())
 #endif
 }
 
 template <class _CharT, class _Traits, class _Allocator>
 inline
 basic_string<_CharT, _Traits, _Allocator>::basic_string(basic_string&& __str, const allocator_type& __a)
     : __r_(__default_init_tag(), __a)
 {
     if (__str.__is_long() && __a != __str.__alloc()) // copy, not move
         __init(_VSTD::__to_address(__str.__get_long_pointer()), __str.__get_long_size());
     else
     {
         __r_.first().__r = __str.__r_.first().__r;
         __str.__zero();
     }
+    _VSTD::__debug_db_insert_c(this);
 #if _LIBCPP_DEBUG_LEVEL == 2
-    if (!__libcpp_is_constant_evaluated()) {
-        __get_db()->__insert_c(this);
-        if (__is_long())
-            __get_db()->swap(this, &__str);
-    }
+    if (!__libcpp_is_constant_evaluated() && __is_long())
 #endif
 }
 
 #endif // _LIBCPP_CXX03_LANG
 
 template <class _CharT, class _Traits, class _Allocator>
 void
 basic_string<_CharT, _Traits, _Allocator>::__init(size_type __n, value_type __c)

 }
 
 template <class _CharT, class _Traits, class _Allocator>
 inline
 basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, _CharT __c)
      : __r_(__default_init_tag(), __default_init_tag())
 {
     __init(__n, __c);
-#if _LIBCPP_DEBUG_LEVEL == 2
-    if (!__libcpp_is_constant_evaluated())
-        __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
 }
 
 template <class _CharT, class _Traits, class _Allocator>
 template <class>
 basic_string<_CharT, _Traits, _Allocator>::basic_string(size_type __n, _CharT __c, const _Allocator& __a)
     : __r_(__default_init_tag(), __a)
 {
     __init(__n, __c);
-#if _LIBCPP_DEBUG_LEVEL == 2
-    if (!__libcpp_is_constant_evaluated())
-        __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
 }
 
 template <class _CharT, class _Traits, class _Allocator>
 basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str,
                                                         size_type __pos, size_type __n,
                                                         const _Allocator& __a)
     : __r_(__default_init_tag(), __a)
 {
     size_type __str_sz = __str.size();
     if (__pos > __str_sz)
         this->__throw_out_of_range();
     __init(__str.data() + __pos, _VSTD::min(__n, __str_sz - __pos));
-#if _LIBCPP_DEBUG_LEVEL == 2
-    if (!__libcpp_is_constant_evaluated())
-        __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
 }
 
 template <class _CharT, class _Traits, class _Allocator>
 inline
 basic_string<_CharT, _Traits, _Allocator>::basic_string(const basic_string& __str, size_type __pos,
                                                         const _Allocator& __a)
     : __r_(__default_init_tag(), __a)
 {
     size_type __str_sz = __str.size();
     if (__pos > __str_sz)
         this->__throw_out_of_range();
     __init(__str.data() + __pos, __str_sz - __pos);
-#if _LIBCPP_DEBUG_LEVEL == 2
-    if (!__libcpp_is_constant_evaluated())
-        __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
 }
 
 template <class _CharT, class _Traits, class _Allocator>
 template <class _Tp, class>
 basic_string<_CharT, _Traits, _Allocator>::basic_string(
              const _Tp& __t, size_type __pos, size_type __n, const allocator_type& __a)
     : __r_(__default_init_tag(), __a)
 {
     __self_view __sv0 = __t;
     __self_view __sv = __sv0.substr(__pos, __n);
     __init(__sv.data(), __sv.size());
-#if _LIBCPP_DEBUG_LEVEL == 2
-    if (!__libcpp_is_constant_evaluated())
-        __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
 }
 
 template <class _CharT, class _Traits, class _Allocator>
 template <class _Tp, class>
 basic_string<_CharT, _Traits, _Allocator>::basic_string(const _Tp & __t)
      : __r_(__default_init_tag(), __default_init_tag())
 {
     __self_view __sv = __t;
     __init(__sv.data(), __sv.size());
-#if _LIBCPP_DEBUG_LEVEL == 2
-    if (!__libcpp_is_constant_evaluated())
-        __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
 }
 
 template <class _CharT, class _Traits, class _Allocator>
 template <class _Tp, class>
 basic_string<_CharT, _Traits, _Allocator>::basic_string(const _Tp & __t, const _Allocator& __a)
     : __r_(__default_init_tag(), __a)
 {
     __self_view __sv = __t;
     __init(__sv.data(), __sv.size());
-#if _LIBCPP_DEBUG_LEVEL == 2
-    if (!__libcpp_is_constant_evaluated())
-        __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
 }
 
 template <class _CharT, class _Traits, class _Allocator>
 template <class _InputIterator>
 __enable_if_t
 <
     __is_exactly_cpp17_input_iterator<_InputIterator>::value
 >

 
 template <class _CharT, class _Traits, class _Allocator>
 template<class _InputIterator, class>
 inline
 basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last)
      : __r_(__default_init_tag(), __default_init_tag())
 {
     __init(__first, __last);
-#if _LIBCPP_DEBUG_LEVEL == 2
-    if (!__libcpp_is_constant_evaluated())
-        __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
 }
 
 template <class _CharT, class _Traits, class _Allocator>
 template<class _InputIterator, class>
 inline
 basic_string<_CharT, _Traits, _Allocator>::basic_string(_InputIterator __first, _InputIterator __last,
                                                         const allocator_type& __a)
     : __r_(__default_init_tag(), __a)
 {
     __init(__first, __last);
-#if _LIBCPP_DEBUG_LEVEL == 2
-    if (!__libcpp_is_constant_evaluated())
-        __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
 }
 
 #ifndef _LIBCPP_CXX03_LANG
 
 template <class _CharT, class _Traits, class _Allocator>
 inline
 basic_string<_CharT, _Traits, _Allocator>::basic_string(
     initializer_list<_CharT> __il)
      : __r_(__default_init_tag(), __default_init_tag())
 {
     __init(__il.begin(), __il.end());
-#if _LIBCPP_DEBUG_LEVEL == 2
-    if (!__libcpp_is_constant_evaluated())
-        __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
 }
 
 template <class _CharT, class _Traits, class _Allocator>
 inline
 
 basic_string<_CharT, _Traits, _Allocator>::basic_string(
     initializer_list<_CharT> __il, const _Allocator& __a)
     : __r_(__default_init_tag(), __a)
 {
     __init(__il.begin(), __il.end());
-#if _LIBCPP_DEBUG_LEVEL == 2
-    if (!__libcpp_is_constant_evaluated())
-        __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
 }
 
 #endif // _LIBCPP_CXX03_LANG
 
 template <class _CharT, class _Traits, class _Allocator>
 basic_string<_CharT, _Traits, _Allocator>::~basic_string()
 {
 #if _LIBCPP_DEBUG_LEVEL == 2

libcxx/include/unordered_map

#endif
     template <class _Key2, class _Tp2, class _Hash2, class _Pred2, class _Alloc2>
         friend class _LIBCPP_TEMPLATE_VIS unordered_map;
     template <class _Key2, class _Tp2, class _Hash2, class _Pred2, class _Alloc2>
         friend class _LIBCPP_TEMPLATE_VIS unordered_multimap;
 
     _LIBCPP_INLINE_VISIBILITY
     unordered_map()
         _NOEXCEPT_(is_nothrow_default_constructible<__table>::value)
-        {
-#if _LIBCPP_DEBUG_LEVEL == 2
-            __get_db()->__insert_c(this);
-#endif
-        }
+        _VSTD::__debug_db_insert_c(this);
     explicit unordered_map(size_type __n, const hasher& __hf = hasher(),
                            const key_equal& __eql = key_equal());
     unordered_map(size_type __n, const hasher& __hf,
                   const key_equal& __eql,
                   const allocator_type& __a);
     template <class _InputIterator>
         unordered_map(_InputIterator __first, _InputIterator __last);
     template <class _InputIterator>
-> unordered_map<remove_const_t<_Key>, _Tp, _Hash,
                    equal_to<remove_const_t<_Key>>, _Allocator>;
 #endif
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
         size_type __n, const hasher& __hf, const key_equal& __eql)
     : __table_(__hf, __eql)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
         size_type __n, const hasher& __hf, const key_equal& __eql,
         const allocator_type& __a)
     : __table_(__hf, __eql, typename __table::allocator_type(__a))
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 inline
 unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
         const allocator_type& __a)
     : __table_(typename __table::allocator_type(__a))
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 template <class _InputIterator>
 unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
         _InputIterator __first, _InputIterator __last)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     insert(__first, __last);
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 template <class _InputIterator>
 unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
         _InputIterator __first, _InputIterator __last, size_type __n,
         const hasher& __hf, const key_equal& __eql)
     : __table_(__hf, __eql)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
     insert(__first, __last);
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 template <class _InputIterator>
 unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
         _InputIterator __first, _InputIterator __last, size_type __n,
         const hasher& __hf, const key_equal& __eql, const allocator_type& __a)
     : __table_(__hf, __eql, typename __table::allocator_type(__a))
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
     insert(__first, __last);
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
         const unordered_map& __u)
     : __table_(__u.__table_)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__u.bucket_count());
     insert(__u.begin(), __u.end());
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
         const unordered_map& __u, const allocator_type& __a)
     : __table_(__u.__table_, typename __table::allocator_type(__a))
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__u.bucket_count());
     insert(__u.begin(), __u.end());
 }
 
 #ifndef _LIBCPP_CXX03_LANG
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 inline
 unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
         unordered_map&& __u)
     _NOEXCEPT_(is_nothrow_move_constructible<__table>::value)
     : __table_(_VSTD::move(__u.__table_))
 {
+    _VSTD::__debug_db_insert_c(this);
 #if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
     __get_db()->swap(this, &__u);
 #endif
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
         unordered_map&& __u, const allocator_type& __a)
     : __table_(_VSTD::move(__u.__table_), typename __table::allocator_type(__a))
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     if (__a != __u.get_allocator())
     {
         iterator __i = __u.begin();
         while (__u.size() != 0) {
             __table_.__emplace_unique(
                 __u.__table_.remove((__i++).__i_)->__value_.__move());
         }
     }
 #if _LIBCPP_DEBUG_LEVEL == 2
     else
         __get_db()->swap(this, &__u);
 #endif
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
         initializer_list<value_type> __il)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     insert(__il.begin(), __il.end());
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
         initializer_list<value_type> __il, size_type __n, const hasher& __hf,
         const key_equal& __eql)
     : __table_(__hf, __eql)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
     insert(__il.begin(), __il.end());
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_map(
         initializer_list<value_type> __il, size_type __n, const hasher& __hf,
         const key_equal& __eql, const allocator_type& __a)
     : __table_(__hf, __eql, typename __table::allocator_type(__a))
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
     insert(__il.begin(), __il.end());
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 inline
 unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>&
 unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::operator=(unordered_map&& __u)
#endif
     template <class _Key2, class _Tp2, class _Hash2, class _Pred2, class _Alloc2>
         friend class _LIBCPP_TEMPLATE_VIS unordered_map;
     template <class _Key2, class _Tp2, class _Hash2, class _Pred2, class _Alloc2>
         friend class _LIBCPP_TEMPLATE_VIS unordered_multimap;
 
     _LIBCPP_INLINE_VISIBILITY
     unordered_multimap()
         _NOEXCEPT_(is_nothrow_default_constructible<__table>::value)
-        {
-#if _LIBCPP_DEBUG_LEVEL == 2
-            __get_db()->__insert_c(this);
-#endif
-        }
+        _VSTD::__debug_db_insert_c(this);
     explicit unordered_multimap(size_type __n, const hasher& __hf = hasher(),
                                 const key_equal& __eql = key_equal());
     unordered_multimap(size_type __n, const hasher& __hf,
                                 const key_equal& __eql,
                                 const allocator_type& __a);
     template <class _InputIterator>
         unordered_multimap(_InputIterator __first, _InputIterator __last);
     template <class _InputIterator>
-> unordered_multimap<remove_const_t<_Key>, _Tp, _Hash,
                         equal_to<remove_const_t<_Key>>, _Allocator>;
 #endif
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
         size_type __n, const hasher& __hf, const key_equal& __eql)
     : __table_(__hf, __eql)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
         size_type __n, const hasher& __hf, const key_equal& __eql,
         const allocator_type& __a)
     : __table_(__hf, __eql, typename __table::allocator_type(__a))
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 template <class _InputIterator>
 unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
         _InputIterator __first, _InputIterator __last)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     insert(__first, __last);
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 template <class _InputIterator>
 unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
         _InputIterator __first, _InputIterator __last, size_type __n,
         const hasher& __hf, const key_equal& __eql)
     : __table_(__hf, __eql)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
     insert(__first, __last);
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 template <class _InputIterator>
 unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
         _InputIterator __first, _InputIterator __last, size_type __n,
         const hasher& __hf, const key_equal& __eql, const allocator_type& __a)
     : __table_(__hf, __eql, typename __table::allocator_type(__a))
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
     insert(__first, __last);
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 inline
 unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
         const allocator_type& __a)
     : __table_(typename __table::allocator_type(__a))
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
         const unordered_multimap& __u)
     : __table_(__u.__table_)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__u.bucket_count());
     insert(__u.begin(), __u.end());
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
         const unordered_multimap& __u, const allocator_type& __a)
     : __table_(__u.__table_, typename __table::allocator_type(__a))
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__u.bucket_count());
     insert(__u.begin(), __u.end());
 }
 
 #ifndef _LIBCPP_CXX03_LANG
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 inline
 unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
         unordered_multimap&& __u)
     _NOEXCEPT_(is_nothrow_move_constructible<__table>::value)
     : __table_(_VSTD::move(__u.__table_))
 {
+    _VSTD::__debug_db_insert_c(this);
 #if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
     __get_db()->swap(this, &__u);
 #endif
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
         unordered_multimap&& __u, const allocator_type& __a)
     : __table_(_VSTD::move(__u.__table_), typename __table::allocator_type(__a))
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     if (__a != __u.get_allocator())
     {
         iterator __i = __u.begin();
         while (__u.size() != 0)
         {
             __table_.__insert_multi(
                 __u.__table_.remove((__i++).__i_)->__value_.__move());
         }
     }
 #if _LIBCPP_DEBUG_LEVEL == 2
     else
         __get_db()->swap(this, &__u);
 #endif
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
         initializer_list<value_type> __il)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     insert(__il.begin(), __il.end());
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
         initializer_list<value_type> __il, size_type __n, const hasher& __hf,
         const key_equal& __eql)
     : __table_(__hf, __eql)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
     insert(__il.begin(), __il.end());
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::unordered_multimap(
         initializer_list<value_type> __il, size_type __n, const hasher& __hf,
         const key_equal& __eql, const allocator_type& __a)
     : __table_(__hf, __eql, typename __table::allocator_type(__a))
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
     insert(__il.begin(), __il.end());
 }
 
 template <class _Key, class _Tp, class _Hash, class _Pred, class _Alloc>
 inline
 unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>&
 unordered_multimap<_Key, _Tp, _Hash, _Pred, _Alloc>::operator=(unordered_multimap&& __u)

libcxx/include/unordered_set

#endif
     template <class _Value2, class _Hash2, class _Pred2, class _Alloc2>
         friend class _LIBCPP_TEMPLATE_VIS unordered_set;
     template <class _Value2, class _Hash2, class _Pred2, class _Alloc2>
         friend class _LIBCPP_TEMPLATE_VIS unordered_multiset;
 
     _LIBCPP_INLINE_VISIBILITY
     unordered_set()
         _NOEXCEPT_(is_nothrow_default_constructible<__table>::value)
-        {
-#if _LIBCPP_DEBUG_LEVEL == 2
-            __get_db()->__insert_c(this);
-#endif
-        }
+        _VSTD::__debug_db_insert_c(this);
     explicit unordered_set(size_type __n, const hasher& __hf = hasher(),
                            const key_equal& __eql = key_equal());
 #if _LIBCPP_STD_VER > 11
     inline _LIBCPP_INLINE_VISIBILITY
     unordered_set(size_type __n, const allocator_type& __a)
         : unordered_set(__n, hasher(), key_equal(), __a) {}
     inline _LIBCPP_INLINE_VISIBILITY
     unordered_set(size_type __n, const hasher& __hf, const allocator_type& __a)
unordered_set(initializer_list<_Tp>, typename allocator_traits<_Allocator>::size_type, _Hash, _Allocator)
   -> unordered_set<_Tp, _Hash, equal_to<_Tp>, _Allocator>;
 #endif
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(size_type __n,
         const hasher& __hf, const key_equal& __eql)
     : __table_(__hf, __eql)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(size_type __n,
         const hasher& __hf, const key_equal& __eql, const allocator_type& __a)
     : __table_(__hf, __eql, __a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 template <class _InputIterator>
 unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(
         _InputIterator __first, _InputIterator __last)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     insert(__first, __last);
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 template <class _InputIterator>
 unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(
         _InputIterator __first, _InputIterator __last, size_type __n,
         const hasher& __hf, const key_equal& __eql)
     : __table_(__hf, __eql)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
     insert(__first, __last);
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 template <class _InputIterator>
 unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(
         _InputIterator __first, _InputIterator __last, size_type __n,
         const hasher& __hf, const key_equal& __eql, const allocator_type& __a)
     : __table_(__hf, __eql, __a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
     insert(__first, __last);
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 inline
 unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(
         const allocator_type& __a)
     : __table_(__a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(
         const unordered_set& __u)
     : __table_(__u.__table_)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__u.bucket_count());
     insert(__u.begin(), __u.end());
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(
         const unordered_set& __u, const allocator_type& __a)
     : __table_(__u.__table_, __a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__u.bucket_count());
     insert(__u.begin(), __u.end());
 }
 
 #ifndef _LIBCPP_CXX03_LANG
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 inline
 unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(
         unordered_set&& __u)
     _NOEXCEPT_(is_nothrow_move_constructible<__table>::value)
     : __table_(_VSTD::move(__u.__table_))
 {
+    _VSTD::__debug_db_insert_c(this);
 #if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
     __get_db()->swap(this, &__u);
 #endif
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(
         unordered_set&& __u, const allocator_type& __a)
     : __table_(_VSTD::move(__u.__table_), __a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     if (__a != __u.get_allocator())
     {
         iterator __i = __u.begin();
         while (__u.size() != 0)
             __table_.__insert_unique(_VSTD::move(__u.__table_.remove(__i++)->__value_));
     }
 #if _LIBCPP_DEBUG_LEVEL == 2
     else
         __get_db()->swap(this, &__u);
 #endif
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(
         initializer_list<value_type> __il)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     insert(__il.begin(), __il.end());
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(
         initializer_list<value_type> __il, size_type __n, const hasher& __hf,
         const key_equal& __eql)
     : __table_(__hf, __eql)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
     insert(__il.begin(), __il.end());
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 unordered_set<_Value, _Hash, _Pred, _Alloc>::unordered_set(
         initializer_list<value_type> __il, size_type __n, const hasher& __hf,
         const key_equal& __eql, const allocator_type& __a)
     : __table_(__hf, __eql, __a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
     insert(__il.begin(), __il.end());
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 inline
 unordered_set<_Value, _Hash, _Pred, _Alloc>&
 unordered_set<_Value, _Hash, _Pred, _Alloc>::operator=(unordered_set&& __u)
#endif
     template <class _Value2, class _Hash2, class _Pred2, class _Alloc2>
         friend class _LIBCPP_TEMPLATE_VIS unordered_set;
     template <class _Value2, class _Hash2, class _Pred2, class _Alloc2>
         friend class _LIBCPP_TEMPLATE_VIS unordered_multiset;
 
     _LIBCPP_INLINE_VISIBILITY
     unordered_multiset()
         _NOEXCEPT_(is_nothrow_default_constructible<__table>::value)
-        {
-#if _LIBCPP_DEBUG_LEVEL == 2
-            __get_db()->__insert_c(this);
-#endif
-        }
+        _VSTD::__debug_db_insert_c(this);
     explicit unordered_multiset(size_type __n, const hasher& __hf = hasher(),
                                 const key_equal& __eql = key_equal());
     unordered_multiset(size_type __n, const hasher& __hf,
                        const key_equal& __eql, const allocator_type& __a);
 #if _LIBCPP_STD_VER > 11
     inline _LIBCPP_INLINE_VISIBILITY
     unordered_multiset(size_type __n, const allocator_type& __a)
         : unordered_multiset(__n, hasher(), key_equal(), __a) {}
unordered_multiset(initializer_list<_Tp>, typename allocator_traits<_Allocator>::size_type, _Hash, _Allocator)
   -> unordered_multiset<_Tp, _Hash, equal_to<_Tp>, _Allocator>;
 #endif
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(
         size_type __n, const hasher& __hf, const key_equal& __eql)
     : __table_(__hf, __eql)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(
         size_type __n, const hasher& __hf, const key_equal& __eql,
         const allocator_type& __a)
     : __table_(__hf, __eql, __a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 template <class _InputIterator>
 unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(
         _InputIterator __first, _InputIterator __last)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     insert(__first, __last);
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 template <class _InputIterator>
 unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(
         _InputIterator __first, _InputIterator __last, size_type __n,
         const hasher& __hf, const key_equal& __eql)
     : __table_(__hf, __eql)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
     insert(__first, __last);
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 template <class _InputIterator>
 unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(
         _InputIterator __first, _InputIterator __last, size_type __n,
         const hasher& __hf, const key_equal& __eql, const allocator_type& __a)
     : __table_(__hf, __eql, __a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
     insert(__first, __last);
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 inline
 unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(
         const allocator_type& __a)
     : __table_(__a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(
         const unordered_multiset& __u)
     : __table_(__u.__table_)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__u.bucket_count());
     insert(__u.begin(), __u.end());
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(
         const unordered_multiset& __u, const allocator_type& __a)
     : __table_(__u.__table_, __a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__u.bucket_count());
     insert(__u.begin(), __u.end());
 }
 
 #ifndef _LIBCPP_CXX03_LANG
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 inline
 unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(
         unordered_multiset&& __u)
     _NOEXCEPT_(is_nothrow_move_constructible<__table>::value)
     : __table_(_VSTD::move(__u.__table_))
 {
+    _VSTD::__debug_db_insert_c(this);
 #if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
     __get_db()->swap(this, &__u);
 #endif
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(
         unordered_multiset&& __u, const allocator_type& __a)
     : __table_(_VSTD::move(__u.__table_), __a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     if (__a != __u.get_allocator())
     {
         iterator __i = __u.begin();
         while (__u.size() != 0)
             __table_.__insert_multi(_VSTD::move(__u.__table_.remove(__i++)->__value_));
     }
 #if _LIBCPP_DEBUG_LEVEL == 2
     else
         __get_db()->swap(this, &__u);
 #endif
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(
         initializer_list<value_type> __il)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     insert(__il.begin(), __il.end());
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(
         initializer_list<value_type> __il, size_type __n, const hasher& __hf,
         const key_equal& __eql)
     : __table_(__hf, __eql)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
     insert(__il.begin(), __il.end());
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 unordered_multiset<_Value, _Hash, _Pred, _Alloc>::unordered_multiset(
         initializer_list<value_type> __il, size_type __n, const hasher& __hf,
         const key_equal& __eql, const allocator_type& __a)
     : __table_(__hf, __eql, __a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     __table_.rehash(__n);
     insert(__il.begin(), __il.end());
 }
 
 template <class _Value, class _Hash, class _Pred, class _Alloc>
 inline
 unordered_multiset<_Value, _Hash, _Pred, _Alloc>&
 unordered_multiset<_Value, _Hash, _Pred, _Alloc>::operator=(

libcxx/include/vector

public:
     typedef _VSTD::reverse_iterator<iterator>               reverse_iterator;
     typedef _VSTD::reverse_iterator<const_iterator>         const_reverse_iterator;
 
     static_assert((is_same<typename allocator_type::value_type, value_type>::value),
                   "Allocator::value_type must be same type as value_type");
 
     _LIBCPP_INLINE_VISIBILITY
     vector() _NOEXCEPT_(is_nothrow_default_constructible<allocator_type>::value)
-        {
-#if _LIBCPP_DEBUG_LEVEL == 2
-            __get_db()->__insert_c(this);
-#endif
-        }
+        _VSTD::__debug_db_insert_c(this);
     _LIBCPP_INLINE_VISIBILITY explicit vector(const allocator_type& __a)
 #if _LIBCPP_STD_VER <= 14
         _NOEXCEPT_(is_nothrow_copy_constructible<allocator_type>::value)
 #else
         _NOEXCEPT
 #endif
         : __base(__a)
     {
-#if _LIBCPP_DEBUG_LEVEL == 2
-        __get_db()->__insert_c(this);
-#endif
+        _VSTD::__debug_db_insert_c(this);
     }
     explicit vector(size_type __n);
 #if _LIBCPP_STD_VER > 11
     explicit vector(size_type __n, const allocator_type& __a);
 #endif
     vector(size_type __n, const value_type& __x);
 
     template <class = __enable_if_t<__is_allocator<_Allocator>::value> >
     vector(size_type __n, const value_type& __x, const allocator_type& __a)
         : __base(__a)
     {
-#if _LIBCPP_DEBUG_LEVEL == 2
-      __get_db()->__insert_c(this);
-#endif
+      _VSTD::__debug_db_insert_c(this);
       if (__n > 0)
       {
           __vallocate(__n);
           __construct_at_end(__n, __x);
       }
     }
 
     template <class _InputIterator>
else
         __v.__construct_at_end(__n, __x);
         __swap_out_circular_buffer(__v);
     }
 }
 
 template <class _Tp, class _Allocator>
 vector<_Tp, _Allocator>::vector(size_type __n)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     if (__n > 0)
     {
         __vallocate(__n);
         __construct_at_end(__n);
     }
 }
 
 #if _LIBCPP_STD_VER > 11
 template <class _Tp, class _Allocator>
 vector<_Tp, _Allocator>::vector(size_type __n, const allocator_type& __a)
     : __base(__a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     if (__n > 0)
     {
         __vallocate(__n);
         __construct_at_end(__n);
     }
 }
 #endif
 
 template <class _Tp, class _Allocator>
 vector<_Tp, _Allocator>::vector(size_type __n, const value_type& __x)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     if (__n > 0)
     {
         __vallocate(__n);
         __construct_at_end(__n, __x);
     }
 }
 
 template <class _Tp, class _Allocator>
 template <class _InputIterator>
 vector<_Tp, _Allocator>::vector(_InputIterator __first,
        typename enable_if<__is_cpp17_input_iterator  <_InputIterator>::value &&
                          !__is_cpp17_forward_iterator<_InputIterator>::value &&
                          is_constructible<
                             value_type,
                             typename iterator_traits<_InputIterator>::reference>::value,
                           _InputIterator>::type __last)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     for (; __first != __last; ++__first)
         __emplace_back(*__first);
 }
 
 template <class _Tp, class _Allocator>
 template <class _InputIterator>
 vector<_Tp, _Allocator>::vector(_InputIterator __first, _InputIterator __last, const allocator_type& __a,
        typename enable_if<__is_cpp17_input_iterator  <_InputIterator>::value &&
                          !__is_cpp17_forward_iterator<_InputIterator>::value &&
                          is_constructible<
                             value_type,
                             typename iterator_traits<_InputIterator>::reference>::value>::type*)
     : __base(__a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     for (; __first != __last; ++__first)
         __emplace_back(*__first);
 }
 
 template <class _Tp, class _Allocator>
 template <class _ForwardIterator>
 vector<_Tp, _Allocator>::vector(_ForwardIterator __first,
                                 typename enable_if<__is_cpp17_forward_iterator<_ForwardIterator>::value &&
                                 is_constructible<
                                    value_type,
                                    typename iterator_traits<_ForwardIterator>::reference>::value,
                                                    _ForwardIterator>::type __last)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     size_type __n = static_cast<size_type>(_VSTD::distance(__first, __last));
     if (__n > 0)
     {
         __vallocate(__n);
         __construct_at_end(__first, __last, __n);
     }
 }
 
 template <class _Tp, class _Allocator>
 template <class _ForwardIterator>
 vector<_Tp, _Allocator>::vector(_ForwardIterator __first, _ForwardIterator __last, const allocator_type& __a,
                                 typename enable_if<__is_cpp17_forward_iterator<_ForwardIterator>::value &&
                                 is_constructible<
                                    value_type,
                                    typename iterator_traits<_ForwardIterator>::reference>::value>::type*)
     : __base(__a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     size_type __n = static_cast<size_type>(_VSTD::distance(__first, __last));
     if (__n > 0)
     {
         __vallocate(__n);
         __construct_at_end(__first, __last, __n);
     }
 }
 
 template <class _Tp, class _Allocator>
 vector<_Tp, _Allocator>::vector(const vector& __x)
     : __base(__alloc_traits::select_on_container_copy_construction(__x.__alloc()))
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     size_type __n = __x.size();
     if (__n > 0)
     {
         __vallocate(__n);
         __construct_at_end(__x.__begin_, __x.__end_, __n);
     }
 }
 
 template <class _Tp, class _Allocator>
 vector<_Tp, _Allocator>::vector(const vector& __x, const __identity_t<allocator_type>& __a)
     : __base(__a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     size_type __n = __x.size();
     if (__n > 0)
     {
         __vallocate(__n);
         __construct_at_end(__x.__begin_, __x.__end_, __n);
     }
 }
 
 #ifndef _LIBCPP_CXX03_LANG
 
 template <class _Tp, class _Allocator>
 inline _LIBCPP_INLINE_VISIBILITY
 vector<_Tp, _Allocator>::vector(vector&& __x)
 #if _LIBCPP_STD_VER > 14
         _NOEXCEPT
 #else
         _NOEXCEPT_(is_nothrow_move_constructible<allocator_type>::value)
 #endif
     : __base(_VSTD::move(__x.__alloc()))
 {
+    _VSTD::__debug_db_insert_c(this);
 #if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
     __get_db()->swap(this, _VSTD::addressof(__x));
 #endif
     this->__begin_ = __x.__begin_;
     this->__end_ = __x.__end_;
     this->__end_cap() = __x.__end_cap();
     __x.__begin_ = __x.__end_ = __x.__end_cap() = nullptr;
 }
 
 template <class _Tp, class _Allocator>
 inline _LIBCPP_INLINE_VISIBILITY
 vector<_Tp, _Allocator>::vector(vector&& __x, const __identity_t<allocator_type>& __a)
     : __base(__a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     if (__a == __x.__alloc())
     {
         this->__begin_ = __x.__begin_;
         this->__end_ = __x.__end_;
         this->__end_cap() = __x.__end_cap();
         __x.__begin_ = __x.__end_ = __x.__end_cap() = nullptr;
 #if _LIBCPP_DEBUG_LEVEL == 2
         __get_db()->swap(this, _VSTD::addressof(__x));
 #endif
     }
     else
     {
         typedef move_iterator<iterator> _Ip;
         assign(_Ip(__x.begin()), _Ip(__x.end()));
     }
 }
 
 template <class _Tp, class _Allocator>
 inline _LIBCPP_INLINE_VISIBILITY
 vector<_Tp, _Allocator>::vector(initializer_list<value_type> __il)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     if (__il.size() > 0)
     {
         __vallocate(__il.size());
         __construct_at_end(__il.begin(), __il.end(), __il.size());
     }
 }
 
 template <class _Tp, class _Allocator>
 inline _LIBCPP_INLINE_VISIBILITY
 vector<_Tp, _Allocator>::vector(initializer_list<value_type> __il, const allocator_type& __a)
     : __base(__a)
 {
-#if _LIBCPP_DEBUG_LEVEL == 2
-    __get_db()->__insert_c(this);
-#endif
+    _VSTD::__debug_db_insert_c(this);
     if (__il.size() > 0)
     {
         __vallocate(__il.size());
         __construct_at_end(__il.begin(), __il.end(), __il.size());
     }
 }
 
 template <class _Tp, class _Allocator>