projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 52066eae | 1 | // { dg-do run { target c++11 } } |
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2 | // 2005-01-15 Douglas Gregor <dgregor@cs.indiana.edu> |
| 3 | // | |
| 8d9254fc | 4 | // Copyright (C) 2005-2020 Free Software Foundation, Inc. |
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5 | // |
| 6 | // This file is part of the GNU ISO C++ Library. This library is free | |
| 7 | // software; you can redistribute it and/or modify it under the | |
| 8 | // terms of the GNU General Public License as published by the | |
| 9 | // Free Software Foundation; either version 3, or (at your option) | |
| 10 | // any later version. | |
| 11 | // | |
| 12 | // This library is distributed in the hope that it will be useful, | |
| 13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 15 | // GNU General Public License for more details. | |
| 16 | // | |
| 17 | // You should have received a copy of the GNU General Public License along | |
| 18 | // with this library; see the file COPYING3. If not see | |
| 19 | // <http://www.gnu.org/licenses/>. | |
| 20 | ||
| 21 | // 20.7.15 polymorphic function object wrapper | |
| 22 | #include <functional> | |
| 23 | #include <testsuite_hooks.h> | |
| 24 | ||
| 25 | using namespace __gnu_test; | |
| 26 | ||
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27 | // Operations on empty function<> objects |
| 28 | void test01() | |
| 29 | { | |
| 30 | using std::function; | |
| 31 | using std::bad_function_call; | |
| 32 | ||
| 33 | // Default-construction | |
| 34 | function<int(float)> f1; | |
| 35 | VERIFY( ((bool)f1 == false) ); | |
| 36 | VERIFY( !f1 ); | |
| 37 | VERIFY( f1 == 0 ); | |
| 38 | VERIFY( 0 == f1 ); | |
| 39 | VERIFY( !(f1 != 0) ); | |
| 40 | VERIFY( !(0 != f1) ); | |
| 41 | ||
| 42 | // Copy-construction | |
| 43 | function<int(float)> f2(f1); | |
| 44 | VERIFY( !f2 ); | |
| 45 | ||
| 46 | // Construct with NULL pointer | |
| 47 | function<int(float)> f3(0); | |
| 48 | VERIFY( !f3 ); | |
| 49 | ||
| 50 | // Assignment | |
| 51 | f1 = f2; | |
| 52 | VERIFY( !f1); | |
| 53 | ||
| 54 | // Assignment to NULL pointer | |
| 55 | f1 = 0; | |
| 56 | VERIFY( !f1 ); | |
| 57 | ||
| 58 | // Swap | |
| 59 | swap(f1, f2); | |
| 60 | VERIFY( !f1 ); | |
| 61 | VERIFY( !f2 ); | |
| 62 | ||
| 63 | // Invocation should throw bad_function_call | |
| 64 | bool thrown = false; | |
| 65 | try | |
| 66 | { | |
| 67 | f1(3.14159f); | |
| 68 | VERIFY( false ); | |
| 69 | } | |
| 70 | catch (bad_function_call) | |
| 71 | { | |
| 72 | thrown = true; | |
| 73 | } | |
| 74 | VERIFY( thrown ); | |
| 75 | ||
| 76 | // target_type returns typeid(void) | |
| 77 | VERIFY( f1.target_type() == typeid(void) ); | |
| 78 | ||
| 79 | // target() always returns a NULL pointer | |
| 80 | VERIFY( f1.target<int (*)(float)>() == 0); | |
| 81 | ||
| 82 | // Check const version | |
| 83 | const function<int(float)>& f1c = f1; | |
| 84 | VERIFY( f1c.target<int (*)(float)>() == 0 ); | |
| 85 | VERIFY( !f1c ); | |
| 86 | } | |
| 87 | ||
| 88 | int main() | |
| 89 | { | |
| 90 | test01(); | |
| 91 | return 0; | |
| 92 | } |