From ef23debede319d64a67b10d571ce6278470e373f Mon Sep 17 00:00:00 2001
From: Abseil Team <absl-team@google.com>
Date: Mon, 4 May 2026 10:07:18 -0700
Subject: [PATCH] Deprecate and inline absl::index_sequence

PiperOrigin-RevId: 910095727
Change-Id: I9f175172108186e03559409be2eb1a0600b6a225
---
 absl/utility/BUILD.bazel    | 1 +
 absl/utility/CMakeLists.txt | 1 +
 absl/utility/utility.h      | 7 ++++++-
 3 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/absl/utility/BUILD.bazel b/absl/utility/BUILD.bazel
index a714b020..1994a01d 100644
--- a/absl/utility/BUILD.bazel
+++ b/absl/utility/BUILD.bazel
@@ -41,6 +41,7 @@ cc_library(
     linkopts = ABSL_DEFAULT_LINKOPTS,
     deps = [
         "//absl/base:config",
+        "//absl/base:core_headers",
         "//absl/meta:type_traits",
     ],
 )
diff --git a/absl/utility/CMakeLists.txt b/absl/utility/CMakeLists.txt
index 8ac87bce..ece42de2 100644
--- a/absl/utility/CMakeLists.txt
+++ b/absl/utility/CMakeLists.txt
@@ -23,6 +23,7 @@ absl_cc_library(
     ${ABSL_DEFAULT_COPTS}
   DEPS
     absl::config
+    absl::core_headers
     absl::type_traits
   PUBLIC
 )
diff --git a/absl/utility/utility.h b/absl/utility/utility.h
index 4d72c31a..f89468be 100644
--- a/absl/utility/utility.h
+++ b/absl/utility/utility.h
@@ -21,6 +21,7 @@
 #include <utility>
 
 #include "absl/base/config.h"
+#include "absl/base/macros.h"
 
 // TODO(b/290784225): Include what you use cleanup required.
 #include "absl/meta/type_traits.h"
@@ -43,7 +44,11 @@ using std::in_place_type;
 using std::in_place_type_t;
 using std::index_sequence;
 using std::index_sequence_for;
-using std::integer_sequence;
+
+template <class T, T... I>
+using integer_sequence ABSL_DEPRECATE_AND_INLINE() =
+    std::integer_sequence<T, I...>;
+
 using std::make_from_tuple;
 using std::make_index_sequence;
 using std::make_integer_sequence;