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-rw-r--r--compilerplugins/clang/test/unreffun.cxx57
1 files changed, 57 insertions, 0 deletions
diff --git a/compilerplugins/clang/test/unreffun.cxx b/compilerplugins/clang/test/unreffun.cxx
new file mode 100644
index 0000000000..315c699b77
--- /dev/null
+++ b/compilerplugins/clang/test/unreffun.cxx
@@ -0,0 +1,57 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include "config_clang.h"
+
+#include "unreffun.hxx"
+
+template <typename> struct S
+{
+ friend void f();
+};
+
+void f() {}
+
+void g(); // expected-error {{Unreferenced function declaration [loplugin:unreffun]}}
+
+void h() // expected-error {{Unreferenced externally visible function definition [loplugin:unreffun]}}
+{
+}
+
+void i() {}
+
+extern void j(); // expected-error {{Unreferenced function declaration [loplugin:unreffun]}}
+
+extern void
+k() // expected-error {{Unreferenced externally visible function definition [loplugin:unreffun]}}
+{
+}
+
+extern void l(); // expected-note {{first declaration is here [loplugin:unreffun]}}
+void l() // expected-error {{Unreferenced externally visible function definition [loplugin:unreffun]}}
+{
+}
+
+void m()
+{
+// The below produced a false "Unreferenced externally invisible function definition" for Local::f
+// prior to <https://github.com/llvm/llvm-project/commit/d812488d3c54c07f24d4bef79e329f17e7f19c3b>
+// "Call MarkVirtualMembersReferenced on an actual class definition" in Clang 17:
+#if CLANG_VERSION >= 170000
+ struct Local;
+#endif
+ struct Local
+ {
+ virtual void f() {}
+ };
+ Local x;
+ (void)x;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */