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131
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1 // { dg-do compile { target c++17 } }
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2 // { dg-options "-Wunused" }
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111
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3
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4 #include <tuple>
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5
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6 struct A { int i,j,k; };
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7
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8 A f();
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9 int p[3];
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10
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11 int z;
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12
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13 int main()
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14 {
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15 {
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16 auto [i,j,k] = f(); // { dg-warning "unused" }
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17 }
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18 {
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19 [[maybe_unused]] auto [i,j,k] = f();
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20 }
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21 {
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22 auto [i,j,k] = f();
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23 z = i;
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24 }
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25 {
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26 auto [i,j,k] = f(); // { dg-warning "unused" }
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27 i = 5;
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28 }
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29 {
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30 auto [i,j] = std::tuple{1,2}; // { dg-warning "unused" }
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31 }
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32 {
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33 [[maybe_unused]] auto [i,j] = std::tuple{1,2};
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34 }
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35 {
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36 auto [i,j] = std::tuple{1,2};
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37 z = i;
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38 }
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39 {
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40 auto [i,j] = std::tuple{1,2};
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41 i = 5;
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42 }
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43 {
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44 auto [i,j,k] = p; // { dg-warning "unused" }
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45 }
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46 {
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47 [[maybe_unused]] auto [i,j,k] = p;
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48 }
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49 {
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50 auto [i,j,k] = p;
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51 z = i;
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52 }
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53 {
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54 auto [i,j,k] = p; // { dg-warning "unused" }
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55 i = 5;
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56 }
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57 }
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