clang: tests: added regression test

Author: askar102

clang/test/Reflection/expansion-statements-overload-range.cpp

@@ -0,0 +1,34 @@
+//===----------------------------------------------------------------------===//
+//
+// Copyright 2024 Bloomberg Finance L.P.
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// RUN: %clang_cc1 -std=c++2c -freflection-latest -fexpansion-statements -fsyntax-only -verify %s
+
+void f();          // expected-note {{possible target for call}}
+void f(int) {      // expected-note {{possible target for call}}
+  template for (auto x : f); // expected-error {{reference to overloaded function could not be resolved; did you mean to call it?}}
+}
+
+int g();
+void h() {
+  template for (auto x : g); // expected-error {{cannot expand over a function 'int ()'; did you mean to call it with no arguments?}}
+}
+
+// With pointer
+void h2() {
+  int (*fp)() = g;
+  template for (auto x : fp); // expected-error {{cannot expand over a function 'int (*)()'}}
+}
+
+template <typename T> int dep();
+template <typename T>
+void inst() {
+  template for (auto x : dep<T>); // expected-error {{cannot expand over a function 'int ()'; did you mean to call it with no arguments?}}
+}
+template void inst<int>(); // expected-note {{in instantiation of function template specialization 'inst<int>' requested here}}