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annotate gcc/testsuite/g++.dg/warn/Wunused-var-12.C @ 158:494b0b89df80 default tip

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author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Mon, 25 May 2020 18:13:55 +0900
parents 04ced10e8804
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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111
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1 // PR c++/44444
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2 // { dg-do compile }
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3 // { dg-options "-Wunused" }
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4
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5 struct S
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6 {
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7 const int &u;
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8 const int &v;
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9 S (const int &a, const int &b) : u(a), v(b) { }
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10 };
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11
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12 bool
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13 f1 ()
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14 {
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15 bool t = false;
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16 S z = S (1, 2);
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17 t |= z.u == 1;
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18 t |= z.v == 2;
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19 return t;
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20 }
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21
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22 void
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23 f2 ()
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24 {
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25 S z = S (1, 2);
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26 z.u; // { dg-warning "no effect" }
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27 }
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28
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29 int i;
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30
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31 void
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32 f3 ()
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33 {
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34 S z = S (1, 2);
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35 i++, z.u; // { dg-warning "no effect" }
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36 }