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b5889d25 | 1 | /* Tests for interactions between C++ and assert. |
2b778ceb | 2 | Copyright (C) 2017-2021 Free Software Foundation, Inc. |
b5889d25 FW |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library; if not, see | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
b5889d25 | 18 | |
83fe0781 CD |
19 | /* Undefine NDEBUG to ensure the build system e.g. CFLAGS/CXXFLAGS |
20 | does not disable the asserts we want to test. */ | |
21 | #undef NDEBUG | |
b5889d25 FW |
22 | #include <assert.h> |
23 | ||
24 | /* The C++ standard requires that if the assert argument is a constant | |
25 | subexpression, then the assert itself is one, too. */ | |
26 | constexpr int | |
27 | check_constexpr () | |
28 | { | |
29 | return (assert (true), 1); | |
30 | } | |
31 | ||
32 | /* Objects of this class can be contextually converted to bool, but | |
33 | cannot be compared to int. */ | |
34 | struct no_int | |
35 | { | |
36 | no_int () = default; | |
37 | no_int (const no_int &) = delete; | |
38 | ||
39 | explicit operator bool () const | |
40 | { | |
41 | return true; | |
42 | } | |
43 | ||
44 | bool operator! () const; /* No definition. */ | |
45 | template <class T> bool operator== (T) const; /* No definition. */ | |
46 | template <class T> bool operator!= (T) const; /* No definition. */ | |
47 | }; | |
48 | ||
49 | /* This class tests that operator== is not used by assert. */ | |
50 | struct bool_and_int | |
51 | { | |
52 | bool_and_int () = default; | |
53 | bool_and_int (const no_int &) = delete; | |
54 | ||
55 | explicit operator bool () const | |
56 | { | |
57 | return true; | |
58 | } | |
59 | ||
60 | bool operator! () const; /* No definition. */ | |
61 | template <class T> bool operator== (T) const; /* No definition. */ | |
62 | template <class T> bool operator!= (T) const; /* No definition. */ | |
63 | }; | |
64 | ||
65 | static int | |
66 | do_test () | |
67 | { | |
68 | { | |
69 | no_int value; | |
70 | assert (value); | |
71 | } | |
72 | ||
73 | { | |
74 | bool_and_int value; | |
75 | assert (value); | |
76 | } | |
77 | ||
78 | return 0; | |
79 | } | |
80 | ||
81 | #include <support/test-driver.c> |