1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // Can a noexcept member function pointer be caught by a non-noexcept catch clause?
10 // UNSUPPORTED: c++03, c++11, c++14
11 // UNSUPPORTED: no-exceptions
12 
13 // Support for catching a function pointer including noexcept was shipped in macOS 10.13
14 // XFAIL: use_system_cxx_lib && {{.+}}-apple-macosx10.{{9|10|11|12}}
15 
16 // GCC supports noexcept function types but this test still fails.
17 // This is likely a bug in their implementation. Investigation needed.
18 // XFAIL: gcc-11, gcc-12
19 
20 #include <cassert>
21 
22 struct X {
23   template<bool Noexcept> void f() noexcept(Noexcept) {}
24 };
25 template<bool Noexcept> using FnType = void (X::*)() noexcept(Noexcept);
26 
27 template<bool ThrowNoexcept, bool CatchNoexcept>
28 void check()
29 {
30     try
31     {
32         auto p = &X::f<ThrowNoexcept>;
33         throw p;
34         assert(false);
35     }
36     catch (FnType<CatchNoexcept> p)
37     {
38         assert(ThrowNoexcept || !CatchNoexcept);
39         assert(p == &X::f<ThrowNoexcept>);
40     }
41     catch (...)
42     {
43         assert(!ThrowNoexcept && CatchNoexcept);
44     }
45 }
46 
47 void check_deep() {
48     FnType<true> p = &X::f<true>;
49     try
50     {
51         throw &p;
52     }
53     catch (FnType<false> *q)
54     {
55         assert(false);
56     }
57     catch (FnType<true> *q)
58     {
59     }
60     catch (...)
61     {
62         assert(false);
63     }
64 }
65 
66 int main(int, char**)
67 {
68     check<false, false>();
69     check<false, true>();
70     check<true, false>();
71     check<true, true>();
72     check_deep();
73 
74     return 0;
75 }
76