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52066eae | 1 | // { dg-do run { target c++11 } } |
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2 | // { dg-require-effective-target hosted } |
3 | ||
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4 | // 2005-01-15 Douglas Gregor <dgregor@cs.indiana.edu> |
5 | // | |
83ffe9cd | 6 | // Copyright (C) 2005-2023 Free Software Foundation, Inc. |
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7 | // |
8 | // This file is part of the GNU ISO C++ Library. This library is free | |
9 | // software; you can redistribute it and/or modify it under the | |
10 | // terms of the GNU General Public License as published by the | |
11 | // Free Software Foundation; either version 3, or (at your option) | |
12 | // any later version. | |
13 | // | |
14 | // This library is distributed in the hope that it will be useful, | |
15 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | // GNU General Public License for more details. | |
18 | // | |
19 | // You should have received a copy of the GNU General Public License along | |
20 | // with this library; see the file COPYING3. If not see | |
21 | // <http://www.gnu.org/licenses/>. | |
22 | ||
23 | // 20.7.15 polymorphic function object wrapper | |
24 | #include <functional> | |
25 | #include <testsuite_hooks.h> | |
26 | ||
27 | using namespace __gnu_test; | |
28 | ||
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29 | // Operations on empty function<> objects |
30 | void test01() | |
31 | { | |
32 | using std::function; | |
33 | using std::bad_function_call; | |
34 | ||
35 | // Default-construction | |
36 | function<int(float)> f1; | |
37 | VERIFY( ((bool)f1 == false) ); | |
38 | VERIFY( !f1 ); | |
39 | VERIFY( f1 == 0 ); | |
40 | VERIFY( 0 == f1 ); | |
41 | VERIFY( !(f1 != 0) ); | |
42 | VERIFY( !(0 != f1) ); | |
43 | ||
44 | // Copy-construction | |
45 | function<int(float)> f2(f1); | |
46 | VERIFY( !f2 ); | |
47 | ||
48 | // Construct with NULL pointer | |
49 | function<int(float)> f3(0); | |
50 | VERIFY( !f3 ); | |
51 | ||
52 | // Assignment | |
53 | f1 = f2; | |
54 | VERIFY( !f1); | |
55 | ||
56 | // Assignment to NULL pointer | |
57 | f1 = 0; | |
58 | VERIFY( !f1 ); | |
59 | ||
60 | // Swap | |
61 | swap(f1, f2); | |
62 | VERIFY( !f1 ); | |
63 | VERIFY( !f2 ); | |
64 | ||
65 | // Invocation should throw bad_function_call | |
66 | bool thrown = false; | |
67 | try | |
68 | { | |
69 | f1(3.14159f); | |
70 | VERIFY( false ); | |
71 | } | |
13feb023 | 72 | catch (const bad_function_call&) |
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73 | { |
74 | thrown = true; | |
75 | } | |
76 | VERIFY( thrown ); | |
77 | ||
b6b66006 | 78 | #if __cpp_rtti |
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79 | // target_type returns typeid(void) |
80 | VERIFY( f1.target_type() == typeid(void) ); | |
b6b66006 | 81 | #endif |
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82 | |
83 | // target() always returns a NULL pointer | |
84 | VERIFY( f1.target<int (*)(float)>() == 0); | |
85 | ||
86 | // Check const version | |
87 | const function<int(float)>& f1c = f1; | |
88 | VERIFY( f1c.target<int (*)(float)>() == 0 ); | |
89 | VERIFY( !f1c ); | |
90 | } | |
91 | ||
92 | int main() | |
93 | { | |
94 | test01(); | |
95 | return 0; | |
96 | } |