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1 // { dg-options "-std=gnu++2a" }
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2 // { dg-do run { target c++2a } }
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3
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4 // Copyright (C) 2020 Free Software Foundation, Inc.
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5 //
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6 // This file is part of the GNU ISO C++ Library. This library is free
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7 // software; you can redistribute it and/or modify it under the
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8 // terms of the GNU General Public License as published by the
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9 // Free Software Foundation; either version 3, or (at your option)
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10 // any later version.
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11 //
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12 // This library is distributed in the hope that it will be useful,
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13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 // GNU General Public License for more details.
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16 //
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17 // You should have received a copy of the GNU General Public License along
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18 // with this library; see the file COPYING3. If not see
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19 // <http://www.gnu.org/licenses/>.
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20
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21 #include <deque>
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22 #include <testsuite_hooks.h>
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23
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24 struct aggressive_aggregate
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25 {
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26 int a;
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27 int b;
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28 };
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29
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30 void test_emplace_front()
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31 {
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32 std::deque<aggressive_aggregate> x;
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33 x.emplace_front(1, 2);
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34 VERIFY(x.front().a == 1);
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35 VERIFY(x.front().b == 2);
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36 x.emplace_front(1);
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37 VERIFY(x.front().a == 1);
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38 VERIFY(x.front().b == 0);
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39 x.emplace_front();
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40 VERIFY(x.front().a == 0);
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41 VERIFY(x.front().b == 0);
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42 }
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43
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44 void test_emplace_back()
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45 {
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46 std::deque<aggressive_aggregate> x;
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47 x.emplace_back(1, 2);
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48 VERIFY(x.back().a == 1);
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49 VERIFY(x.back().b == 2);
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50 x.emplace_back(1);
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51 VERIFY(x.back().a == 1);
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52 VERIFY(x.back().b == 0);
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53 x.emplace_back();
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54 VERIFY(x.back().a == 0);
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55 VERIFY(x.back().b == 0);
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56 }
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57
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58 int main()
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59 {
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60 test_emplace_front();
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61 test_emplace_back();
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62 }
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