2 files changed, 19 insertions, 0 deletions
diff --git a/include/ftl/flags.h b/include/ftl/flags.h
index dbe3148fc5..a2a22ebebe 100644
--- a/include/ftl/flags.h
+++ b/include/ftl/flags.h
@@ -22,6 +22,7 @@
 #include <bitset>
 #include <cstdint>
 #include <iterator>
+#include <initializer_list>
 #include <string>
 #include <type_traits>
 
@@ -40,6 +41,7 @@ class Flags {
 
 public:
     constexpr Flags(F f) : mFlags(static_cast<U>(f)) {}
+    constexpr Flags(std::initializer_list<F> fs) : mFlags(combine(fs)) {}
     constexpr Flags() : mFlags(0) {}
     constexpr Flags(const Flags<F>& f) : mFlags(f.mFlags) {}
 
@@ -197,6 +199,14 @@ public:
 private:
     U mFlags;
 
+    static constexpr U combine(std::initializer_list<F> fs) {
+        U result = 0;
+        for (const F f : fs) {
+            result |= static_cast<U>(f);
+        }
+        return result;
+    }
+
     static void appendFlag(std::string& str, const std::string_view& flag, bool& first) {
         if (first) {
             first = false;
diff --git a/include/ftl/non_null.h b/include/ftl/non_null.h
index 4a5d8bffd0..e68428810b 100644
--- a/include/ftl/non_null.h
+++ b/include/ftl/non_null.h
@@ -68,6 +68,15 @@ class NonNull final {
   constexpr NonNull(const NonNull&) = default;
   constexpr NonNull& operator=(const NonNull&) = default;
 
+  template <typename U, typename = std::enable_if_t<std::is_convertible_v<U, Pointer>>>
+  constexpr NonNull(const NonNull<U>& other) : pointer_(other.get()) {}
+
+  template <typename U, typename = std::enable_if_t<std::is_convertible_v<U, Pointer>>>
+  constexpr NonNull& operator=(const NonNull<U>& other) {
+    pointer_ = other.get();
+    return *this;
+  }
+
   [[nodiscard]] constexpr const Pointer& get() const { return pointer_; }
   [[nodiscard]] constexpr explicit operator const Pointer&() const { return get(); }