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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 // { dg-require-effective-target hosted }
4 // 2005-01-15 Douglas Gregor <dgregor@cs.indiana.edu>
6 // Copyright (C) 2005-2024 Free Software Foundation, Inc.
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)
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.
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/>.
23 // 20.7.15 polymorphic function object wrapper
25 #include <testsuite_hooks.h>
27 using namespace __gnu_test
;
29 // Operations on empty function<> objects
33 using std::bad_function_call
;
35 // Default-construction
36 function
<int(float)> f1
;
37 VERIFY( ((bool)f1
== false) );
45 function
<int(float)> f2(f1
);
48 // Construct with NULL pointer
49 function
<int(float)> f3(0);
56 // Assignment to NULL pointer
65 // Invocation should throw bad_function_call
72 catch (const bad_function_call
&)
79 // target_type returns typeid(void)
80 VERIFY( f1
.target_type() == typeid(void) );
83 // target() always returns a NULL pointer
84 VERIFY( f1
.target
<int (*)(float)>() == 0);
86 // Check const version
87 const function
<int(float)>& f1c
= f1
;
88 VERIFY( f1c
.target
<int (*)(float)>() == 0 );