1 //===---------------------- catch_function_03.cpp -------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // Can a noexcept function pointer be caught by a non-noexcept catch clause?
11 // UNSUPPORTED: c++98, c++03, c++11, c++14
12 // UNSUPPORTED: libcxxabi-no-exceptions, libcxxabi-no-qualified-function-types
13 
14 #include <cassert>
15 
16 template<bool Noexcept> void f() noexcept(Noexcept) {}
17 template<bool Noexcept> using FnType = void() noexcept(Noexcept);
18 
19 template<bool ThrowNoexcept, bool CatchNoexcept>
20 void check()
21 {
22     try
23     {
24         auto *p = f<ThrowNoexcept>;
25         throw p;
26         assert(false);
27     }
28     catch (FnType<CatchNoexcept> *p)
29     {
30         assert(ThrowNoexcept || !CatchNoexcept);
31         assert(p == &f<ThrowNoexcept>);
32     }
33     catch (...)
34     {
35         assert(!ThrowNoexcept && CatchNoexcept);
36     }
37 }
38 
39 void check_deep() {
40     auto *p = f<true>;
41     try
42     {
43         throw &p;
44     }
45     catch (FnType<false> **q)
46     {
47         assert(false);
48     }
49     catch (FnType<true> **q)
50     {
51     }
52     catch (...)
53     {
54         assert(false);
55     }
56 }
57 
58 int main()
59 {
60     check<false, false>();
61     check<false, true>();
62     check<true, false>();
63     check<true, true>();
64     check_deep();
65 }
66