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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/20_util/function/1.cc
1 // { dg-do run { target c++11 } }
2 // 2005-01-15 Douglas Gregor <dgregor@cs.indiana.edu>
4 // Copyright (C) 2005-2021 Free Software Foundation, Inc.
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)
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.
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/>.
21 // 20.7.15 polymorphic function object wrapper
23 #include <testsuite_hooks.h>
25 using namespace __gnu_test
;
27 // Operations on empty function<> objects
31 using std::bad_function_call
;
33 // Default-construction
34 function
<int(float)> f1
;
35 VERIFY( ((bool)f1
== false) );
43 function
<int(float)> f2(f1
);
46 // Construct with NULL pointer
47 function
<int(float)> f3(0);
54 // Assignment to NULL pointer
63 // Invocation should throw bad_function_call
70 catch (const bad_function_call
&)
76 // target_type returns typeid(void)
77 VERIFY( f1
.target_type() == typeid(void) );
79 // target() always returns a NULL pointer
80 VERIFY( f1
.target
<int (*)(float)>() == 0);
82 // Check const version
83 const function
<int(float)>& f1c
= f1
;
84 VERIFY( f1c
.target
<int (*)(float)>() == 0 );