Export of internal Abseil changes

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4ee535c37f92cd45b8c9aa009e5c833265b3a0bb by Samuel Benzaquen <sbenza@google.com>:

Test and fix `insert(hint, node)`

PiperOrigin-RevId: 337122891

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7b760ced555756fecbad702fedb697424dd65167 by Abseil Team <absl-team@google.com>:

Changed the minimum version of iOS and OSX for Abseil Podspec.

PiperOrigin-RevId: 336926756
GitOrigin-RevId: 4ee535c37f92cd45b8c9aa009e5c833265b3a0bb
Change-Id: I94e70f3342570c83b9965ca458a3f02eaa3efc0d

2 files changed, 23 insertions, 1 deletions

diff --git a/absl/container/internal/raw_hash_set.h b/absl/container/internal/raw_hash_set.h
index ec13a2f7..67364b75 100644
--- a/absl/container/internal/raw_hash_set.h
+++ b/absl/container/internal/raw_hash_set.h
@@ -1065,7 +1065,9 @@ class raw_hash_set {
   }
 
   iterator insert(const_iterator, node_type&& node) {
-    return insert(std::move(node)).first;
+    auto res = insert(std::move(node));
+    node = std::move(res.node);
+    return res.position;
   }
 
   // This overload kicks in if we can deduce the key from args. This enables us
diff --git a/absl/container/internal/raw_hash_set_test.cc b/absl/container/internal/raw_hash_set_test.cc
index 6210eb64..33d2773d 100644
--- a/absl/container/internal/raw_hash_set_test.cc
+++ b/absl/container/internal/raw_hash_set_test.cc
@@ -1711,6 +1711,26 @@ TEST(Nodes, ExtractInsert) {
   EXPECT_FALSE(node);
 }
 
+TEST(Nodes, HintInsert) {
+  IntTable t = {1, 2, 3};
+  auto node = t.extract(1);
+  EXPECT_THAT(t, UnorderedElementsAre(2, 3));
+  auto it = t.insert(t.begin(), std::move(node));
+  EXPECT_THAT(t, UnorderedElementsAre(1, 2, 3));
+  EXPECT_EQ(*it, 1);
+  EXPECT_FALSE(node);
+
+  node = t.extract(2);
+  EXPECT_THAT(t, UnorderedElementsAre(1, 3));
+  // reinsert 2 to make the next insert fail.
+  t.insert(2);
+  EXPECT_THAT(t, UnorderedElementsAre(1, 2, 3));
+  it = t.insert(t.begin(), std::move(node));
+  EXPECT_EQ(*it, 2);
+  // The node was not emptied by the insert call.
+  EXPECT_TRUE(node);
+}
+
 IntTable MakeSimpleTable(size_t size) {
   IntTable t;
   while (t.size() < size) t.insert(t.size());