compilerplugins/clang/test/unreffun.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  */
   9
  10 #include "config_clang.h"
  11
  12 #include "unreffun.hxx"
  13
  14 template <typename> struct S
  15 {
  16     friend void f();
  17 };
  18
  19 void f() {}
  20
  21 void g(); // expected-error {{Unreferenced function declaration [loplugin:unreffun]}}
  22
  23 void h() // expected-error {{Unreferenced externally visible function definition [loplugin:unreffun]}}
  24 {
  25 }
  26
  27 void i() {}
  28
  29 extern void j(); // expected-error {{Unreferenced function declaration [loplugin:unreffun]}}
  30
  31 extern void
  32 k() // expected-error {{Unreferenced externally visible function definition [loplugin:unreffun]}}
  33 {
  34 }
  35
  36 extern void l(); // expected-note {{first declaration is here [loplugin:unreffun]}}
  37 void l() // expected-error {{Unreferenced externally visible function definition [loplugin:unreffun]}}
  38 {
  39 }
  40
  41 void m()
  42 {
  43 // The below produced a false "Unreferenced externally invisible function definition" for Local::f
  44 // prior to <https://github.com/llvm/llvm-project/commit/d812488d3c54c07f24d4bef79e329f17e7f19c3b>
  45 // "Call MarkVirtualMembersReferenced on an actual class definition" in Clang 17:
  46 #if CLANG_VERSION >= 170000
  47     struct Local;
  48 #endif
  49     struct Local
  50     {
  51         virtual void f() {}
  52     };
  53     Local x;
  54     (void)x;
  55 }
  56
  57 /* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */