1 //===--------------- catch_member_function_pointer_02.cpp -----------------===//
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
10 // clause?
11 // UNSUPPORTED: no-exceptions, libcxxabi-no-noexcept-function-type
12 
13 // GCC 7 and 8 support noexcept function types but this test still fails.
14 // This is likely a bug in their implementation. Investigation needed.
15 // XFAIL: gcc-7, gcc-8, gcc-9, gcc-10
16 
17 #include <cassert>
18 
19 struct X {
20   template<bool Noexcept> void f() noexcept(Noexcept) {}
21 };
22 template<bool Noexcept> using FnType = void (X::*)() noexcept(Noexcept);
23 
24 template<bool ThrowNoexcept, bool CatchNoexcept>
25 void check()
26 {
27     try
28     {
29         auto p = &X::f<ThrowNoexcept>;
30         throw p;
31         assert(false);
32     }
33     catch (FnType<CatchNoexcept> p)
34     {
35         assert(ThrowNoexcept || !CatchNoexcept);
36         assert(p == &X::f<ThrowNoexcept>);
37     }
38     catch (...)
39     {
40         assert(!ThrowNoexcept && CatchNoexcept);
41     }
42 }
43 
44 void check_deep() {
45     FnType<true> p = &X::f<true>;
46     try
47     {
48         throw &p;
49     }
50     catch (FnType<false> *q)
51     {
52         assert(false);
53     }
54     catch (FnType<true> *q)
55     {
56     }
57     catch (...)
58     {
59         assert(false);
60     }
61 }
62 
63 int main(int, char**)
64 {
65     check<false, false>();
66     check<false, true>();
67     check<true, false>();
68     check<true, true>();
69     check_deep();
70 
71     return 0;
72 }
73