Type erased hash_slot_fn that depends only on key types (and hash function).

PiperOrigin-RevId: 603148301
Change-Id: Ie2e5702995c9e1ef4d5aaab23bc89a1eb5007a86

1 files changed, 17 insertions, 2 deletions

diff --git a/absl/container/internal/raw_hash_set_test.cc b/absl/container/internal/raw_hash_set_test.cc
index 6baaa060..7ec72b22 100644
--- a/absl/container/internal/raw_hash_set_test.cc
+++ b/absl/container/internal/raw_hash_set_test.cc
@@ -405,6 +405,11 @@ struct ValuePolicy {
     return absl::container_internal::DecomposeValue(
         std::forward<F>(f), std::forward<Args>(args)...);
   }
+
+  template <class Hash>
+  static constexpr HashSlotFn get_hash_slot_fn() {
+    return nullptr;
+  }
 };
 
 using IntPolicy = ValuePolicy<int64_t>;
@@ -468,6 +473,11 @@ class StringPolicy {
     return apply_impl(std::forward<F>(f),
                       PairArgs(std::forward<Args>(args)...));
   }
+
+  template <class Hash>
+  static constexpr HashSlotFn get_hash_slot_fn() {
+    return nullptr;
+  }
 };
 
 struct StringHash : absl::Hash<absl::string_view> {
@@ -923,6 +933,11 @@ struct DecomposePolicy {
   static auto apply(F&& f, const T& x) -> decltype(std::forward<F>(f)(x, x)) {
     return std::forward<F>(f)(x, x);
   }
+
+  template <class Hash>
+  static constexpr HashSlotFn get_hash_slot_fn() {
+    return nullptr;
+  }
 };
 
 template <typename Hash, typename Eq>
@@ -1083,7 +1098,7 @@ size_t MaxDensitySize(size_t n) {
 }
 
 struct Modulo1000Hash {
-  size_t operator()(int x) const { return x % 1000; }
+  size_t operator()(int64_t x) const { return static_cast<size_t>(x) % 1000; }
 };
 
 struct Modulo1000HashTable
@@ -2664,7 +2679,7 @@ using RawHashSetAlloc = raw_hash_set<IntPolicy, hash_default_hash<int64_t>,
 TEST(Table, AllocatorPropagation) { TestAllocPropagation<RawHashSetAlloc>(); }
 
 struct CountedHash {
-  size_t operator()(int value) const {
+  size_t operator()(int64_t value) const {
     ++count;
     return static_cast<size_t>(value);
   }