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diff --git a/gcc/rust/util/rust-edition.h b/gcc/rust/util/rust-edition.h
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+// Copyright (C) 2025 Free Software Foundation, Inc.
+
+// This file is part of GCC.
+
+// GCC is free software; you can redistribute it and/or modify it under
+// the terms of the GNU General Public License as published by the Free
+// Software Foundation; either version 3, or (at your option) any later
+// version.
+
+// GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or
+// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+// for more details.
+
+// You should have received a copy of the GNU General Public License
+// along with GCC; see the file COPYING3.  If not see
+// <http://www.gnu.org/licenses/>.
+
+#ifndef RUST_EDITION_H
+#define RUST_EDITION_H
+
+/*
+ * This header exists to avoid including rust-session-manager.h
+ * when we only need information on the selected rust edition
+ */
+
+namespace Rust {
+
+enum class Edition
+{
+  E2015,
+  E2018,
+  E2021
+};
+
+Edition
+get_rust_edition ();
+
+} // namespace Rust
+
+#endif // !RUST_EDITION_H