Go patch committed: Add "any" as alias for "interface{}"

[Ian Lance Taylor via Gcc-patches]

In the Go 1.18 release the predeclared identifier "any" is a new alias
for the type "interface{}".  This patch adds this alias to the Go
frontend.  This requires updating a test.  Bootstrapped and ran Go
testsuite on x86_64-pc-linux-gnu.  Committed to mainline.

Ian

d0607656a50cd571d9ab260d040f1daee89d8eb0
diff --git a/gcc/go/gofrontend/MERGE b/gcc/go/gofrontend/MERGE
index a42d88d25c4..f78561c3483 100644
--- a/gcc/go/gofrontend/MERGE
+++ b/gcc/go/gofrontend/MERGE
@@ -1,4 +1,4 @@
-7d510bf5fcec9b0ccc0282f4193a80c0a164df63
+61f7cf4b9db0587ff099aa36832a355b90ee1bf9
 
 The first line of this file holds the git revision number of the last
 merge done from the gofrontend repository.
diff --git a/gcc/go/gofrontend/gogo.cc b/gcc/go/gofrontend/gogo.cc
index e2fd509f58a..b1e210ee6ac 100644
--- a/gcc/go/gofrontend/gogo.cc
+++ b/gcc/go/gofrontend/gogo.cc
@@ -141,6 +141,15 @@ Gogo::Gogo(Backend* backend, Linemap* linemap, int, int 
pointer_size)
     this->add_named_type(error_type);
   }
 
+  // "any" is an alias for the empty interface type.
+  {
+    Type* empty = Type::make_empty_interface_type(loc);
+    Named_object* no = Named_object::make_type("any", NULL, empty, loc);
+    Named_type* nt = no->type_value();
+    nt->set_is_alias();
+    this->add_named_type(nt);
+  }
+
   this->globals_->add_constant(Typed_identifier("true",
                                                Type::make_boolean_type(),
                                                loc),
diff --git a/gcc/testsuite/go.test/test/fixedbugs/issue14652.go 
b/gcc/testsuite/go.test/test/fixedbugs/issue14652.go
index d53b4126683..586663b676f 100644
--- a/gcc/testsuite/go.test/test/fixedbugs/issue14652.go
+++ b/gcc/testsuite/go.test/test/fixedbugs/issue14652.go
@@ -1,4 +1,4 @@
-// errorcheck
+// compile
 
 // Copyright 2016 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
@@ -6,4 +6,5 @@
 
 package p
 
-var x any // ERROR "undefined: any|undefined type .*any.*"
+// any is now permitted instead of interface{}
+var x any