Still need a better way identify left/right sidedness

Internal.h

@@ -4,6 +4,7 @@
 
 #include <bit>
 #include <cassert>
+#include <cstddef>
 #include <cstdint>
 #include <cstdlib>
 #include <cstring>
@@ -184,9 +185,20 @@ template <class T> using Set = std::set<T, std::less<T>, ArenaAlloc<T>>;
 template <class T> auto set(Arena &arena) {
   return Set<T>(ArenaAlloc<T>(&arena));
 }
+
+template <class T> struct MyHash;
+
+template <class T> struct MyHash<T *> {
+  size_t operator()(const T *t) const noexcept {
+    size_t result;
+    memcpy(&result, &t, sizeof(result));
+    return result;
+  }
+};
+
 template <class T>
 using HashSet =
-    std::unordered_set<T, std::hash<T>, std::equal_to<T>, ArenaAlloc<T>>;
+    std::unordered_set<T, MyHash<T>, std::equal_to<T>, ArenaAlloc<T>>;
 template <class T> auto hashSet(Arena &arena) {
   return HashSet<T>(ArenaAlloc<T>(&arena));
 }
@@ -449,7 +461,7 @@ template <class ConflictSetImpl> struct TestDriver {
   ConflictSetImpl cs{writeVersion};
   ReferenceImpl refImpl{writeVersion};
 
-  constexpr static auto kMaxKeyLen = 24;
+  constexpr static auto kMaxKeyLen = 32;
 
   bool ok = true;