[gcc r13-4650] gccrs: Add wrapper for make_unique

[Arthur Cohen <cohenarthur@gcc.gnu.org>]

https://gcc.gnu.org/g:b32b1b1576a6df965cb3fcbed3780b9f045286b2

commit r13-4650-gb32b1b1576a6df965cb3fcbed3780b9f045286b2
Author: Philip Herron <philip.herron@embecosm.com>
Date:   Tue Aug 23 16:22:22 2022 +0100

    gccrs: Add wrapper for make_unique
    
    This is a wrapper for make_unique. We can likely get rid of this, as there
    are other implementations available, or simply keep using the unique_ptr
    constructor.
    
            gcc/rust/
            * util/rust-make-unique.h: New.

Diff:
---
 gcc/rust/util/rust-make-unique.h | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/gcc/rust/util/rust-make-unique.h b/gcc/rust/util/rust-make-unique.h
new file mode 100644
index 00000000000..7b79e625ff1
--- /dev/null
+++ b/gcc/rust/util/rust-make-unique.h
@@ -0,0 +1,35 @@
+// Copyright (C) 2020-2022 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_MAKE_UNIQUE_H
+#define RUST_MAKE_UNIQUE_H
+
+#include "rust-system.h"
+
+namespace Rust {
+
+template <typename T, typename... Ts>
+std::unique_ptr<T>
+make_unique (Ts &&...params)
+{
+  return std::unique_ptr<T> (new T (std::forward<Ts> (params)...));
+}
+
+} // namespace Rust
+
+#endif // RUST_MAKE_UNIQUE_H