From 5798acdb8cad0c8af2bf5fdb387234a5932ec17d Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Sat, 4 May 2024 12:59:49 +0200
Subject: wip bptr

---
 compat/borrowed-ptr.hpp | 5 ++++-
 compat/borrowed-ptr.inl | 2 +-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/compat/borrowed-ptr.hpp b/compat/borrowed-ptr.hpp
index f649cae3..10b95be9 100644
--- a/compat/borrowed-ptr.hpp
+++ b/compat/borrowed-ptr.hpp
@@ -14,7 +14,7 @@ class bptr final // NOLINT(*-special-member-functions)
     T* ptr; // todo add simple_bptr that doesn't allow casting. should only have the control block element.
     detail_borrowed_ptr::control_block_* blk;
 
-    friend bptr<T> static_pointer_cast<T>(const bptr<T>& p);
+    constexpr bptr(NoInitT) noexcept;
 
 public:
     template<typename... Ts>
@@ -38,8 +38,11 @@ public:
     T* operator->() const noexcept;
     uint32_t use_count() const noexcept;
     explicit operator bool() const noexcept;
+
+    friend bptr<T> static_pointer_cast<T>(const bptr<T>& p);
 };
 
+template<typename T> constexpr bptr<T>::bptr(NoInitT) noexcept {};
 template<typename T> constexpr bptr<T>::bptr(std::nullptr_t) noexcept: ptr{nullptr}, blk{nullptr} {}
 template<typename T> constexpr bptr<T>::bptr() noexcept: bptr{nullptr} {}
 
diff --git a/compat/borrowed-ptr.inl b/compat/borrowed-ptr.inl
index 1d0ac7b6..7302c857 100644
--- a/compat/borrowed-ptr.inl
+++ b/compat/borrowed-ptr.inl
@@ -141,7 +141,7 @@ bptr<T>& bptr<T>::operator=(bptr<Y>&& other) noexcept
 template<typename T, typename U>
 bptr<T> static_pointer_cast(const bptr<U>& p)
 {
-    auto ret = bptr<T>{};
+    auto ret = bptr<T>{NoInit};
     ret.blk = p.blk;
     if (ret.blk) [[likely]]
         ret.blk->incr();
-- 
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