Add more debug capacity validation checks on merge/swap.

PiperOrigin-RevId: 673403995
Change-Id: I62d8bb37d4538c340783fb55e5a00694e932b6d1

absl/container/internal/raw_hash_set.h

@@ -3213,6 +3213,8 @@ class raw_hash_set {
   // If the element already exists in `this`, it is left unmodified in `src`.
   template <typename H, typename E>
   void merge(raw_hash_set<Policy, H, E, Alloc>& src) {  // NOLINT
+    AssertNotDebugCapacity();
+    src.AssertNotDebugCapacity();
     assert(this != &src);
     // Returns whether insertion took place.
     const auto insert_slot = [this](slot_type* src_slot) {
@@ -3263,6 +3265,8 @@ class raw_hash_set {
       IsNoThrowSwappable<hasher>() && IsNoThrowSwappable<key_equal>() &&
       IsNoThrowSwappable<allocator_type>(
           typename AllocTraits::propagate_on_container_swap{})) {
+    AssertNotDebugCapacity();
+    that.AssertNotDebugCapacity();
     using std::swap;
     swap_common(that);
     swap(hash_ref(), that.hash_ref());

absl/container/internal/raw_hash_set_test.cc

@@ -3685,11 +3685,15 @@ TEST(Table, MovedFromCallsFail) {
   }
 
   {
-    ABSL_ATTRIBUTE_UNUSED IntTable t1, t2;
+    ABSL_ATTRIBUTE_UNUSED IntTable t1, t2, t3;
     t1.insert(1);
     t2 = std::move(t1);
     // NOLINTNEXTLINE(bugprone-use-after-move)
     EXPECT_DEATH_IF_SUPPORTED(t1.contains(1), "moved-from");
+    // NOLINTNEXTLINE(bugprone-use-after-move)
+    EXPECT_DEATH_IF_SUPPORTED(t1.swap(t3), "moved-from");
+    // NOLINTNEXTLINE(bugprone-use-after-move)
+    EXPECT_DEATH_IF_SUPPORTED(t1.merge(t3), "moved-from");
   }
   {
     ABSL_ATTRIBUTE_UNUSED IntTable t1;