diff --git a/libcxx/test/std/utilities/smartptr/adapt/out.ptr/out.ptr.t.deref.pass.cpp b/libcxx/test/std/utilities/smartptr/adapt/inout.ptr/inout.ptr.compile.pass.cpp
similarity index 54%
rename from libcxx/test/std/utilities/smartptr/adapt/out.ptr/out.ptr.t.deref.pass.cpp
rename to libcxx/test/std/utilities/smartptr/adapt/inout.ptr/inout.ptr.compile.pass.cpp
index a0f3af8f87fd74..d2eb8c3a6ac008 100644
--- a/libcxx/test/std/utilities/smartptr/adapt/out.ptr/out.ptr.t.deref.pass.cpp
+++ b/libcxx/test/std/utilities/smartptr/adapt/inout.ptr/inout.ptr.compile.pass.cpp
@@ -10,12 +10,9 @@
 
 // <memory>
 
-// [out.ptr.t], class template out_ptr_t
-// template<class Smart, class Pointer, class... Args>
-//   class out_ptr_t;                                          // since c++23
-
-// operator Pointer*() const noexcept;
-// operator void**() const noexcept;
+// [inout.ptr], function template inout_ptr
+// template<class Pointer = void, class Smart, class... Args>
+//   auto inout_ptr(Smart& s, Args&&... args);                 // since c++23
 
 #include <memory>
 
@@ -23,12 +20,15 @@ int main(int, char**) {
   {
     std::unique_ptr<int> uPtr;
 
-    std::out_ptr_t<std::unique_ptr<int>, int*>{uPtr};
+    auto inoutUPtr1 = std::inout_ptr(uPtr);
+    auto inoutUPtr2 = std::inout_ptr<int*>(uPtr);
   }
   {
-    std::unique_ptr<int, std::default_delete<int>> uPtr;
+    auto deleter = [](auto* p) { delete p; };
+    std::unique_ptr<int, decltype(deleter)> uPtr;
 
-    std::out_ptr_t<decltype(uPtr), int*, std::default_delete<int>>{uPtr, std::default_delete<int>{}};
+    auto inoutUPtr1 = std::inout_ptr(uPtr, deleter);
+    auto inoutUPtr2 = std::inout_ptr<int*>(uPtr, deleter);
   }
 
   return 0;
diff --git a/libcxx/test/std/utilities/smartptr/adapt/inout.ptr/inout.ptr.general.pass.cpp b/libcxx/test/std/utilities/smartptr/adapt/inout.ptr/inout.ptr.general.pass.cpp
index 1b45d04f7942d7..58f09dc3a9ec3b 100644
--- a/libcxx/test/std/utilities/smartptr/adapt/inout.ptr/inout.ptr.general.pass.cpp
+++ b/libcxx/test/std/utilities/smartptr/adapt/inout.ptr/inout.ptr.general.pass.cpp
@@ -14,26 +14,188 @@
 // template<class Pointer = void, class Smart, class... Args>
 //   auto inout_ptr(Smart& s, Args&&... args);                 // since c++23
 
+#include <cassert>
 #include <memory>
 
-int main(int, char**) {
+#include "../types.h"
+
+// Test helpers.
+
+void replace_int_p(int** pp) {
+  assert(**pp == 90);
+  delete *pp;
+  *pp = new int{84};
+}
+
+void replace_int_p_with_nullptr(int** pp) {
+  assert(**pp == 90);
+  delete *pp;
+  *pp = nullptr;
+}
+
+void replace_nullptr_with_int_p(int** pp) {
+  assert(*pp == nullptr);
+  *pp = new int{84};
+}
+
+void replace_int_void_p(void** pp) {
+  assert(*(static_cast<int*>(*pp)) == 90);
+  delete static_cast<int*>(*pp);
+  *pp = new int{84};
+}
+
+void replace_int_void_p_with_nullptr(void** pp) {
+  assert(*(static_cast<int*>(*pp)) == 90);
+  delete static_cast<int*>(*pp);
+  *pp = nullptr;
+}
+
+void replace_nullptr_with_int_void_p(void** pp) {
+  assert(*pp == nullptr);
+  *pp = new int{84};
+}
+
+void replace_SomeInt_p(SomeInt** pp) {
+  auto si = **pp;
+  assert(si.value == 90);
+  delete static_cast<SomeInt*>(*pp);
+  *pp = new SomeInt{9084};
+}
+
+void replace_SomeInt_void_p(void** pp) {
+  assert(reinterpret_cast<SomeInt*>(*pp)->value == 90);
+  delete static_cast<SomeInt*>(*pp);
+  *pp = reinterpret_cast<void*>(new SomeInt{9084});
+}
+
+// Test `std::inout_ptr()` function.
+
+void test_raw_ptr() {
+  {
+    auto rPtr = new int{90};
+
+    replace_int_p(std::inout_ptr<int*>(rPtr));
+    assert(*rPtr == 84);
+
+    delete rPtr;
+  }
+  {
+    auto rPtr = new int{90};
+
+    replace_int_p_with_nullptr(std::inout_ptr<int*>(rPtr));
+    assert(rPtr == nullptr);
+  }
+  {
+    int* rPtr = nullptr;
+
+    replace_nullptr_with_int_p(std::inout_ptr<int*>(rPtr));
+    assert(*rPtr == 84);
+    delete rPtr;
+  }
+  {
+    auto rPtr = new int{90};
+
+    replace_int_void_p(std::inout_ptr<int*>(rPtr));
+    assert(*rPtr == 84);
+    delete rPtr;
+  }
+  {
+    auto rPtr = new int{90};
+
+    replace_int_void_p_with_nullptr(std::inout_ptr<int*>(rPtr));
+    assert(rPtr == nullptr);
+  }
+  {
+    int* rPtr = nullptr;
+
+    replace_nullptr_with_int_void_p(std::inout_ptr<int*>(rPtr));
+    assert(*rPtr == 84);
+    delete rPtr;
+  }
+  {
+    auto* rPtr = new SomeInt{90};
+
+    replace_SomeInt_p(std::inout_ptr(rPtr));
+    assert(rPtr->value == 9084);
+    delete rPtr;
+  }
+  {
+    auto* rPtr = new SomeInt{90};
+
+    replace_SomeInt_void_p(std::inout_ptr<SomeInt*>(rPtr));
+    assert(rPtr->value == 9084);
+    delete rPtr;
+  }
+}
+
+void test_unique_ptr() {
+  {
+    auto uPtr = std::make_unique<int>(90);
+
+    replace_int_p(std::inout_ptr(uPtr));
+    assert(*uPtr == 84);
+  }
   {
     std::unique_ptr<int> uPtr;
 
-    auto inoutUPtr1 = std::inout_ptr(uPtr);
-    (void)inoutUPtr1;
-    auto inoutUPtr2 = std::inout_ptr<int*>(uPtr);
-    (void)inoutUPtr2;
+    replace_nullptr_with_int_p(std::inout_ptr(uPtr));
+    assert(*uPtr == 84);
   }
   {
-    auto deleter = [](auto* p) { delete p; };
-    std::unique_ptr<int, decltype(deleter)> uPtr;
+    auto uPtr = std::make_unique<int>(90);
 
-    auto inoutUPtr1 = std::inout_ptr(uPtr, deleter);
-    (void)inoutUPtr1;
-    auto inoutUPtr2 = std::inout_ptr<int*>(uPtr, deleter);
-    (void)inoutUPtr2;
+    replace_int_void_p(std::inout_ptr(uPtr));
+    assert(*uPtr == 84);
   }
+  {
+    std::unique_ptr<int> uPtr;
+
+    replace_nullptr_with_int_void_p(std::inout_ptr(uPtr));
+    assert(*uPtr == 84);
+  }
+  {
+    auto uPtr = std::make_unique<SomeInt>(90);
+
+    replace_SomeInt_p(std::inout_ptr(uPtr));
+    assert(uPtr->value == 9084);
+  }
+  {
+    auto uPtr = std::make_unique<SomeInt>(90);
+
+    replace_SomeInt_void_p(std::inout_ptr<SomeInt*>(uPtr));
+    assert(uPtr->value == 9084);
+  }
+}
+
+void test_custom_ptr() {
+  // ConstructiblePtr
+  {
+    ConstructiblePtr<int> cPtr(new int{90});
+
+    replace_int_p(std::inout_ptr(cPtr));
+    assert(cPtr == 84);
+  }
+  // ResettablePtr
+  {
+    ResettablePtr<int> rPtr(new int{90});
+
+    replace_int_p(std::inout_ptr(rPtr));
+    assert(rPtr == 84);
+  }
+  // NonConstructiblePtr
+  {
+    NonConstructiblePtr<int> nPtr;
+    nPtr.reset(new int{90});
+
+    replace_int_p(std::inout_ptr(nPtr));
+    assert(nPtr == 84);
+  }
+}
+
+int main(int, char**) {
+  test_raw_ptr();
+  test_unique_ptr();
+  test_custom_ptr();
 
   return 0;
 }
diff --git a/libcxx/test/std/utilities/smartptr/adapt/inout.ptr/inout.ptr.pass.cpp b/libcxx/test/std/utilities/smartptr/adapt/inout.ptr/inout.ptr.pass.cpp
deleted file mode 100644
index 58f09dc3a9ec3b..00000000000000
--- a/libcxx/test/std/utilities/smartptr/adapt/inout.ptr/inout.ptr.pass.cpp
+++ /dev/null
@@ -1,201 +0,0 @@
-//===----------------------------------------------------------------------===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-
-// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
-
-// <memory>
-
-// [inout.ptr], function template inout_ptr
-// template<class Pointer = void, class Smart, class... Args>
-//   auto inout_ptr(Smart& s, Args&&... args);                 // since c++23
-
-#include <cassert>
-#include <memory>
-
-#include "../types.h"
-
-// Test helpers.
-
-void replace_int_p(int** pp) {
-  assert(**pp == 90);
-  delete *pp;
-  *pp = new int{84};
-}
-
-void replace_int_p_with_nullptr(int** pp) {
-  assert(**pp == 90);
-  delete *pp;
-  *pp = nullptr;
-}
-
-void replace_nullptr_with_int_p(int** pp) {
-  assert(*pp == nullptr);
-  *pp = new int{84};
-}
-
-void replace_int_void_p(void** pp) {
-  assert(*(static_cast<int*>(*pp)) == 90);
-  delete static_cast<int*>(*pp);
-  *pp = new int{84};
-}
-
-void replace_int_void_p_with_nullptr(void** pp) {
-  assert(*(static_cast<int*>(*pp)) == 90);
-  delete static_cast<int*>(*pp);
-  *pp = nullptr;
-}
-
-void replace_nullptr_with_int_void_p(void** pp) {
-  assert(*pp == nullptr);
-  *pp = new int{84};
-}
-
-void replace_SomeInt_p(SomeInt** pp) {
-  auto si = **pp;
-  assert(si.value == 90);
-  delete static_cast<SomeInt*>(*pp);
-  *pp = new SomeInt{9084};
-}
-
-void replace_SomeInt_void_p(void** pp) {
-  assert(reinterpret_cast<SomeInt*>(*pp)->value == 90);
-  delete static_cast<SomeInt*>(*pp);
-  *pp = reinterpret_cast<void*>(new SomeInt{9084});
-}
-
-// Test `std::inout_ptr()` function.
-
-void test_raw_ptr() {
-  {
-    auto rPtr = new int{90};
-
-    replace_int_p(std::inout_ptr<int*>(rPtr));
-    assert(*rPtr == 84);
-
-    delete rPtr;
-  }
-  {
-    auto rPtr = new int{90};
-
-    replace_int_p_with_nullptr(std::inout_ptr<int*>(rPtr));
-    assert(rPtr == nullptr);
-  }
-  {
-    int* rPtr = nullptr;
-
-    replace_nullptr_with_int_p(std::inout_ptr<int*>(rPtr));
-    assert(*rPtr == 84);
-    delete rPtr;
-  }
-  {
-    auto rPtr = new int{90};
-
-    replace_int_void_p(std::inout_ptr<int*>(rPtr));
-    assert(*rPtr == 84);
-    delete rPtr;
-  }
-  {
-    auto rPtr = new int{90};
-
-    replace_int_void_p_with_nullptr(std::inout_ptr<int*>(rPtr));
-    assert(rPtr == nullptr);
-  }
-  {
-    int* rPtr = nullptr;
-
-    replace_nullptr_with_int_void_p(std::inout_ptr<int*>(rPtr));
-    assert(*rPtr == 84);
-    delete rPtr;
-  }
-  {
-    auto* rPtr = new SomeInt{90};
-
-    replace_SomeInt_p(std::inout_ptr(rPtr));
-    assert(rPtr->value == 9084);
-    delete rPtr;
-  }
-  {
-    auto* rPtr = new SomeInt{90};
-
-    replace_SomeInt_void_p(std::inout_ptr<SomeInt*>(rPtr));
-    assert(rPtr->value == 9084);
-    delete rPtr;
-  }
-}
-
-void test_unique_ptr() {
-  {
-    auto uPtr = std::make_unique<int>(90);
-
-    replace_int_p(std::inout_ptr(uPtr));
-    assert(*uPtr == 84);
-  }
-  {
-    std::unique_ptr<int> uPtr;
-
-    replace_nullptr_with_int_p(std::inout_ptr(uPtr));
-    assert(*uPtr == 84);
-  }
-  {
-    auto uPtr = std::make_unique<int>(90);
-
-    replace_int_void_p(std::inout_ptr(uPtr));
-    assert(*uPtr == 84);
-  }
-  {
-    std::unique_ptr<int> uPtr;
-
-    replace_nullptr_with_int_void_p(std::inout_ptr(uPtr));
-    assert(*uPtr == 84);
-  }
-  {
-    auto uPtr = std::make_unique<SomeInt>(90);
-
-    replace_SomeInt_p(std::inout_ptr(uPtr));
-    assert(uPtr->value == 9084);
-  }
-  {
-    auto uPtr = std::make_unique<SomeInt>(90);
-
-    replace_SomeInt_void_p(std::inout_ptr<SomeInt*>(uPtr));
-    assert(uPtr->value == 9084);
-  }
-}
-
-void test_custom_ptr() {
-  // ConstructiblePtr
-  {
-    ConstructiblePtr<int> cPtr(new int{90});
-
-    replace_int_p(std::inout_ptr(cPtr));
-    assert(cPtr == 84);
-  }
-  // ResettablePtr
-  {
-    ResettablePtr<int> rPtr(new int{90});
-
-    replace_int_p(std::inout_ptr(rPtr));
-    assert(rPtr == 84);
-  }
-  // NonConstructiblePtr
-  {
-    NonConstructiblePtr<int> nPtr;
-    nPtr.reset(new int{90});
-
-    replace_int_p(std::inout_ptr(nPtr));
-    assert(nPtr == 84);
-  }
-}
-
-int main(int, char**) {
-  test_raw_ptr();
-  test_unique_ptr();
-  test_custom_ptr();
-
-  return 0;
-}
diff --git a/libcxx/test/std/utilities/smartptr/adapt/inout.ptr/inout.ptr.t.deref.pass.cpp b/libcxx/test/std/utilities/smartptr/adapt/inout.ptr/inout.ptr.t.convert.pass.cpp
similarity index 55%
rename from libcxx/test/std/utilities/smartptr/adapt/inout.ptr/inout.ptr.t.deref.pass.cpp
rename to libcxx/test/std/utilities/smartptr/adapt/inout.ptr/inout.ptr.t.convert.pass.cpp
index 86a055a7644e25..cee19c11c78c38 100644
--- a/libcxx/test/std/utilities/smartptr/adapt/inout.ptr/inout.ptr.t.deref.pass.cpp
+++ b/libcxx/test/std/utilities/smartptr/adapt/inout.ptr/inout.ptr.t.convert.pass.cpp
@@ -17,18 +17,30 @@
 // operator Pointer*() const noexcept;
 // operator void**() const noexcept;
 
+#include <cassert>
+#include <concepts>
 #include <memory>
 
 int main(int, char**) {
   {
-    std::unique_ptr<int> uPtr;
+    std::unique_ptr<int> uPtr = std::make_unique<int>(84);
 
-    std::inout_ptr_t<std::unique_ptr<int>, int*>{uPtr};
+    const std::inout_ptr_t<std::unique_ptr<int>, int*> ioPtr{uPtr};
+
+    static_assert(noexcept(ioPtr.operator int**()));
+    std::same_as<int**> decltype(auto) pPtr = ioPtr.operator int**();
+
+    assert(**pPtr == 84);
   }
   {
-    std::unique_ptr<int> uPtr;
+    std::unique_ptr<int> uPtr = std::make_unique<int>(84);
+
+    const std::inout_ptr_t<std::unique_ptr<int>, void*> ioPtr{uPtr};
+
+    static_assert(noexcept(ioPtr.operator void**()));
+    std::same_as<void**> decltype(auto) pPtr = ioPtr.operator void**();
 
-    std::inout_ptr_t<std::unique_ptr<int>, int*>{uPtr};
+    assert(**reinterpret_cast<int**>(pPtr) == 84);
   }
 
   return 0;
diff --git a/libcxx/test/std/utilities/smartptr/adapt/out.ptr/out.ptr.general.pass.cpp b/libcxx/test/std/utilities/smartptr/adapt/out.ptr/out.ptr.compile.pass.cpp
similarity index 92%
rename from libcxx/test/std/utilities/smartptr/adapt/out.ptr/out.ptr.general.pass.cpp
rename to libcxx/test/std/utilities/smartptr/adapt/out.ptr/out.ptr.compile.pass.cpp
index 84bea7248e7a6e..71f78a5bf770a0 100644
--- a/libcxx/test/std/utilities/smartptr/adapt/out.ptr/out.ptr.general.pass.cpp
+++ b/libcxx/test/std/utilities/smartptr/adapt/out.ptr/out.ptr.compile.pass.cpp
@@ -21,17 +21,13 @@ int main(int, char**) {
     std::unique_ptr<int> uPtr;
 
     auto outUPtr1 = std::out_ptr(uPtr);
-    (void)outUPtr1;
     auto outUPtr2 = std::out_ptr<int*>(uPtr);
-    (void)outUPtr2;
   }
   {
     std::shared_ptr<int> sPtr;
 
     auto outSPtr1 = std::out_ptr(sPtr, [](auto* p) { delete p; });
-    (void)outSPtr1;
     auto outSPtr2 = std::out_ptr<int*>(sPtr, [](auto* p) { delete p; });
-    (void)outSPtr2;
   }
 
   return 0;
diff --git a/libcxx/test/std/utilities/smartptr/adapt/out.ptr/out.ptr.pass.cpp b/libcxx/test/std/utilities/smartptr/adapt/out.ptr/out.ptr.general.cpp
similarity index 100%
rename from libcxx/test/std/utilities/smartptr/adapt/out.ptr/out.ptr.pass.cpp
rename to libcxx/test/std/utilities/smartptr/adapt/out.ptr/out.ptr.general.cpp
diff --git a/libcxx/test/std/utilities/smartptr/adapt/out.ptr/out.ptr.t.convert.pass.cpp b/libcxx/test/std/utilities/smartptr/adapt/out.ptr/out.ptr.t.convert.pass.cpp
new file mode 100644
index 00000000000000..1e19d1ee5b4ec0
--- /dev/null
+++ b/libcxx/test/std/utilities/smartptr/adapt/out.ptr/out.ptr.t.convert.pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+// 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
+//
+//===----------------------------------------------------------------------===//
+
+// UNSUPPORTED: c++03, c++11, c++14, c++17, c++20
+
+// <memory>
+
+// [out.ptr.t], class template out_ptr_t
+// template<class Smart, class Pointer, class... Args>
+//   class out_ptr_t;                                          // since c++23
+
+// operator Pointer*() const noexcept;
+// operator void**() const noexcept;
+
+#include <cassert>
+#include <concepts>
+#include <memory>
+#include <iostream>
+
+int main(int, char**) {
+  {
+    std::unique_ptr<int> uPtr;
+
+    const std::out_ptr_t<std::unique_ptr<int>, int*> oPtr{uPtr};
+
+    static_assert(noexcept(oPtr.operator int**()));
+    std::same_as<int**> decltype(auto) pPtr = oPtr.operator int**();
+
+    assert(*pPtr == nullptr);
+  }
+  {
+    std::unique_ptr<int, std::default_delete<int>> uPtr;
+
+    const std::out_ptr_t<decltype(uPtr), int*, std::default_delete<int>> oPtr{uPtr, std::default_delete<int>{}};
+
+    static_assert(noexcept(oPtr.operator int**()));
+    std::same_as<int**> decltype(auto) pPtr = oPtr.operator int**();
+
+    assert(*pPtr == nullptr);
+  }
+  {
+    std::unique_ptr<int> uPtr;
+
+    const std::out_ptr_t<std::unique_ptr<int>, void*> oPtr{uPtr};
+
+    static_assert(noexcept(oPtr.operator void**()));
+    std::same_as<void**> decltype(auto) pPtr = oPtr.operator void**();
+
+    assert(*pPtr == nullptr);
+  }
+
+  return 0;
+}