projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| b5889d25 | 1 | /* Tests for interactions between C++ and assert. |
| 04277e02 | 2 | Copyright (C) 2017-2019 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 | |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| 18 | ||
| 19 | #include <assert.h> | |
| 20 | ||
| 21 | /* The C++ standard requires that if the assert argument is a constant | |
| 22 | subexpression, then the assert itself is one, too. */ | |
| 23 | constexpr int | |
| 24 | check_constexpr () | |
| 25 | { | |
| 26 | return (assert (true), 1); | |
| 27 | } | |
| 28 | ||
| 29 | /* Objects of this class can be contextually converted to bool, but | |
| 30 | cannot be compared to int. */ | |
| 31 | struct no_int | |
| 32 | { | |
| 33 | no_int () = default; | |
| 34 | no_int (const no_int &) = delete; | |
| 35 | ||
| 36 | explicit operator bool () const | |
| 37 | { | |
| 38 | return true; | |
| 39 | } | |
| 40 | ||
| 41 | bool operator! () const; /* No definition. */ | |
| 42 | template <class T> bool operator== (T) const; /* No definition. */ | |
| 43 | template <class T> bool operator!= (T) const; /* No definition. */ | |
| 44 | }; | |
| 45 | ||
| 46 | /* This class tests that operator== is not used by assert. */ | |
| 47 | struct bool_and_int | |
| 48 | { | |
| 49 | bool_and_int () = default; | |
| 50 | bool_and_int (const no_int &) = delete; | |
| 51 | ||
| 52 | explicit operator bool () const | |
| 53 | { | |
| 54 | return true; | |
| 55 | } | |
| 56 | ||
| 57 | bool operator! () const; /* No definition. */ | |
| 58 | template <class T> bool operator== (T) const; /* No definition. */ | |
| 59 | template <class T> bool operator!= (T) const; /* No definition. */ | |
| 60 | }; | |
| 61 | ||
| 62 | static int | |
| 63 | do_test () | |
| 64 | { | |
| 65 | { | |
| 66 | no_int value; | |
| 67 | assert (value); | |
| 68 | } | |
| 69 | ||
| 70 | { | |
| 71 | bool_and_int value; | |
| 72 | assert (value); | |
| 73 | } | |
| 74 | ||
| 75 | return 0; | |
| 76 | } | |
| 77 | ||
| 78 | #include <support/test-driver.c> |