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 {
fX23 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>
check()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
check_deep()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
main(int,char **)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