diff --git a/libcxx/include/__flat_map/flat_map.h b/libcxx/include/__flat_map/flat_map.h
index 42ee8d9d318f56..70d01b2692b35e 100644
--- a/libcxx/include/__flat_map/flat_map.h
+++ b/libcxx/include/__flat_map/flat_map.h
@@ -90,10 +90,6 @@ class flat_map {
   using key_compare     = __type_identity_t<_Compare>;
   using reference       = pair<const key_type&, mapped_type&>;
   using const_reference = pair<const key_type&, const mapped_type&>;
-  // TODO : to support vector<bool> in the future, the following typedefs need to replace the above
-  // using reference = pair<ranges::range_reference_t<const _KeyContainer>,
-  // ranges::range_reference_t<_MappedContainer>>; using const_reference =
-  //    pair<ranges::range_reference_t<const _KeyContainer>, ranges::range_reference_t<const _MappedContainer>>;
   using size_type              = size_t;
   using difference_type        = ptrdiff_t;
   using iterator               = __iterator<false>; // see [container.requirements]
@@ -985,7 +981,7 @@ class flat_map {
         ranges::stable_sort(__zv.begin() + __append_start_offset, __end, __compare_key);
       } else {
         _LIBCPP_ASSERT_SEMANTIC_REQUIREMENT(
-            __is_sorted_and_unique(__containers_.keys | views::drop(__append_start_offset)),
+            __is_sorted_and_unique(__containers_.keys | ranges::views::drop(__append_start_offset)),
             "Either the key container is not sorted or it contains duplicates");
       }
       ranges::inplace_merge(__zv.begin(), __zv.begin() + __append_start_offset, __end, __compare_key);
@@ -1074,14 +1070,6 @@ class flat_map {
 
   template <class _Kp>
   _LIBCPP_HIDE_FROM_ABI bool __is_hint_correct(const_iterator __hint, _Kp&& __key) {
-    // todo
-    // note that we have very fragile std::prev in our library
-    // for non LegacyBidirectional iterator, std::prev(it) is well formed and a no-op
-    // here we cannot use std::prev because our iterator is not legacy bidirectional
-    // since its reference type is not a reference
-    // note that user can also attempt to use std::prev on the flat_map::iterator
-    // and it would result in a no-op.
-    // we should probably ban std::prev(LegacyInputIterator)
     if (__hint != cbegin() && !__compare_((__hint - 1)->first, __key)) {
       return false;
     }
diff --git a/libcxx/modules/std/flat_map.inc b/libcxx/modules/std/flat_map.inc
index 83cd20ad618946..1ab7148acf8fc5 100644
--- a/libcxx/modules/std/flat_map.inc
+++ b/libcxx/modules/std/flat_map.inc
@@ -8,8 +8,7 @@
 //===----------------------------------------------------------------------===//
 
 export namespace std {
-#if 0
-  // [flat.map], class template flat_­map
+  // [flat.map], class template flat_map
   using std::flat_map;
 
   using std::sorted_unique;
@@ -17,15 +16,16 @@ export namespace std {
 
   using std::uses_allocator;
 
-  // [flat.map.erasure], erasure for flat_­map
+  // [flat.map.erasure], erasure for flat_map
   using std::erase_if;
 
-  // [flat.multimap], class template flat_­multimap
+#if 0
+  // [flat.multimap], class template flat_multimap
   using std::flat_multimap;
 
   using std::sorted_equivalent;
   using std::sorted_equivalent_t;
 
-  // [flat.multimap.erasure], erasure for flat_­multimap
+  // [flat.multimap.erasure], erasure for flat_multimap
 #endif
 } // namespace std
diff --git a/libcxx/test/std/containers/container.adaptors/flat.map.syn/sorted_unique.pass.cpp b/libcxx/test/std/containers/container.adaptors/flat.map.syn/sorted_unique.pass.cpp
index 59338e2da5aedc..f8bbb070b2f91d 100644
--- a/libcxx/test/std/containers/container.adaptors/flat.map.syn/sorted_unique.pass.cpp
+++ b/libcxx/test/std/containers/container.adaptors/flat.map.syn/sorted_unique.pass.cpp
@@ -29,15 +29,9 @@ static_assert(std::is_trivially_default_constructible_v<std::sorted_unique_t>);
 static_assert(!HasImplicitDefaultCtor<std::sorted_unique_t>);
 
 constexpr bool test() {
-  {
-    [[maybe_unused]] std::sorted_unique_t s;
-  }
-  {
-    [[maybe_unused]] std::same_as<const std::sorted_unique_t&> decltype(auto) s = (std::sorted_unique);
-  }
-  {
-    [[maybe_unused]] std::same_as<const std::sorted_unique_t> decltype(auto) copy = std::sorted_unique;
-  }
+  { [[maybe_unused]] std::sorted_unique_t s; }
+  { [[maybe_unused]] std::same_as<const std::sorted_unique_t&> decltype(auto) s = (std::sorted_unique); }
+  { [[maybe_unused]] std::same_as<const std::sorted_unique_t> decltype(auto) copy = std::sorted_unique; }
 
   return true;
 }
diff --git a/libcxx/test/std/containers/container.adaptors/flat.map/flat.map.cons/alloc.pass.cpp b/libcxx/test/std/containers/container.adaptors/flat.map/flat.map.cons/alloc.pass.cpp
index 53ccb388084c22..8dee25a24760ae 100644
--- a/libcxx/test/std/containers/container.adaptors/flat.map/flat.map.cons/alloc.pass.cpp
+++ b/libcxx/test/std/containers/container.adaptors/flat.map/flat.map.cons/alloc.pass.cpp
@@ -37,7 +37,6 @@ int main(int, char**) {
     using M1 = std::flat_map<int, int, C, V1, V1>;
     using M2 = std::flat_map<int, int, C, V1, V2>;
     using M3 = std::flat_map<int, int, C, V2, V1>;
-    using IL = std::initializer_list<std::pair<int, int>>;
     static_assert(std::is_constructible_v<M1, const A1&>);
     static_assert(!std::is_constructible_v<M1, const A2&>);
     static_assert(!std::is_constructible_v<M2, const A2&>);
diff --git a/libcxx/test/std/containers/container.adaptors/flat.map/flat.map.cons/copy_alloc.pass.cpp b/libcxx/test/std/containers/container.adaptors/flat.map/flat.map.cons/copy_alloc.pass.cpp
index 99da4b33a45c98..2b01243622da9a 100644
--- a/libcxx/test/std/containers/container.adaptors/flat.map/flat.map.cons/copy_alloc.pass.cpp
+++ b/libcxx/test/std/containers/container.adaptors/flat.map/flat.map.cons/copy_alloc.pass.cpp
@@ -37,7 +37,7 @@ int main(int, char**) {
     using M1 = std::flat_map<int, int, C, V1, V1>;
     using M2 = std::flat_map<int, int, C, V1, V2>;
     using M3 = std::flat_map<int, int, C, V2, V1>;
-    static_assert( std::is_constructible_v<M1, const M1&, const A1&>);
+    static_assert(std::is_constructible_v<M1, const M1&, const A1&>);
     static_assert(!std::is_constructible_v<M1, const M1&, const A2&>);
     static_assert(!std::is_constructible_v<M2, const M2&, const A2&>);
     static_assert(!std::is_constructible_v<M3, const M3&, const A2&>);
diff --git a/libcxx/test/std/containers/container.adaptors/flat.map/flat.map.cons/move_alloc.pass.cpp b/libcxx/test/std/containers/container.adaptors/flat.map/flat.map.cons/move_alloc.pass.cpp
index b998f7c876e107..45627850822f9a 100644
--- a/libcxx/test/std/containers/container.adaptors/flat.map/flat.map.cons/move_alloc.pass.cpp
+++ b/libcxx/test/std/containers/container.adaptors/flat.map/flat.map.cons/move_alloc.pass.cpp
@@ -39,7 +39,7 @@ int main(int, char**) {
     using M1 = std::flat_map<int, int, C, V1, V1>;
     using M2 = std::flat_map<int, int, C, V1, V2>;
     using M3 = std::flat_map<int, int, C, V2, V1>;
-    static_assert( std::is_constructible_v<M1, M1&&, const A1&>);
+    static_assert(std::is_constructible_v<M1, M1&&, const A1&>);
     static_assert(!std::is_constructible_v<M1, M1&&, const A2&>);
     static_assert(!std::is_constructible_v<M2, M2&&, const A2&>);
     static_assert(!std::is_constructible_v<M3, M3&&, const A2&>);
@@ -100,9 +100,9 @@ int main(int, char**) {
   {
     // moved-from object maintains invariant if one of underlying container does not clear after move
     using M = std::flat_map<int, int, std::less<>, std::vector<int>, CopyOnlyVector<int>>;
-    M m1    = M({1,2,3},{1,2,3});
-    M m2 (std::move(m1), std::allocator<int>{});
-    assert(m2.size()==3);
+    M m1    = M({1, 2, 3}, {1, 2, 3});
+    M m2(std::move(m1), std::allocator<int>{});
+    assert(m2.size() == 3);
     assert(m1.keys().size() == m1.values().size());
     LIBCPP_ASSERT(m1.empty());
     LIBCPP_ASSERT(m1.keys().size() == 0);