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fbd26352 | 1 | // Copyright (C) 2017-2019 Free Software Foundation, Inc. |
f97daf5d | 2 | // |
3 | // This file is part of the GNU ISO C++ Library. This library is free | |
4 | // software; you can redistribute it and/or modify it under the | |
5 | // terms of the GNU General Public License as published by the | |
6 | // Free Software Foundation; either version 3, or (at your option) | |
7 | // any later version. | |
8 | ||
9 | // This library is distributed in the hope that it will be useful, | |
10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | // GNU General Public License for more details. | |
13 | ||
14 | // You should have received a copy of the GNU General Public License along | |
15 | // with this library; see the file COPYING3. If not see | |
16 | // <http://www.gnu.org/licenses/>. | |
17 | ||
18 | // { dg-do compile { target c++14 } } | |
19 | ||
20 | // PR 78991 | |
21 | // This failed to compile with Clang because the result_of expression causes | |
22 | // instantiation of _Iter_comp_iter::operator() outside the immediate context. | |
23 | ||
24 | #include <algorithm> | |
25 | ||
26 | struct function | |
27 | { | |
28 | function() = default; | |
29 | ||
30 | template<typename F, typename = std::result_of_t<F&(int, int)>> | |
31 | function(F) { } | |
32 | ||
33 | bool operator()(int x, int y) const { return x < y; } | |
34 | }; | |
35 | ||
36 | int main() | |
37 | { | |
38 | int a[2]{ 2, 1 }; | |
39 | std::sort(a, a+2, function{}); | |
40 | } |