Early return from destroy_slots for trivially destructible types in flat_hash_{*}.

PiperOrigin-RevId: 602813933
Change-Id: I744fe438281755a141b2fd47e54ab9c6c0fad5a3

1 files changed, 18 insertions, 0 deletions

diff --git a/absl/container/internal/container_memory_test.cc b/absl/container/internal/container_memory_test.cc
index 90d64bf5..c973ac25 100644
--- a/absl/container/internal/container_memory_test.cc
+++ b/absl/container/internal/container_memory_test.cc
@@ -280,6 +280,24 @@ TEST(MapSlotPolicy, TransferReturnsTrue) {
   }
 }
 
+TEST(MapSlotPolicy, DestroyReturnsTrue) {
+  {
+    using slot_policy = map_slot_policy<int, float>;
+    EXPECT_TRUE(
+        (std::is_same<decltype(slot_policy::destroy<std::allocator<char>>(
+                          nullptr, nullptr)),
+                      std::true_type>::value));
+  }
+  {
+    EXPECT_FALSE(std::is_trivially_destructible<std::unique_ptr<int>>::value);
+    using slot_policy = map_slot_policy<int, std::unique_ptr<int>>;
+    EXPECT_TRUE(
+        (std::is_same<decltype(slot_policy::destroy<std::allocator<char>>(
+                          nullptr, nullptr)),
+                      std::false_type>::value));
+  }
+}
+
 }  // namespace
 }  // namespace container_internal
 ABSL_NAMESPACE_END