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1 // PR c++/42844
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2 // { dg-do compile }
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3
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4 struct A
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5 {
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6 A(){}
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7 };
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8
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9 struct B : A { int i; }; // { dg-message "user-provided default constructor" }
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10
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11 struct C : A { int i; }; // { dg-message "user-provided default constructor" }
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12
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13 struct D : B { D() {} };
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14
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15 struct E { int i; }; // { dg-message "user-provided default constructor" }
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16
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17 template <class T>
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18 struct F : A { T t; }; // { dg-message "user-provided default constructor" }
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19
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20 template <class T>
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21 struct G { T t; }; // { dg-message "user-provided default constructor" }
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22
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23 void f ()
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24 {
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25 B const b; // { dg-error "uninitialized 'const" }
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26 extern B const bext;
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27
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28 C const c[ 1 ]; // { dg-error "uninitialized 'const" }
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29 extern C const cext[ 1 ];
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30
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31 D const d;
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32 extern D const dext;
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33
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34 E const e; // { dg-error "uninitialized 'const" }
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35 extern E const eext;
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36
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37 F<int> const f; // { dg-error "uninitialized 'const" }
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38 extern F<int> const fext;
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39
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40 G<int> const g; // { dg-error "uninitialized 'const" }
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41 extern G<int> const gext;
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42 }
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43
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44 struct H { int i; }; // { dg-message "user-provided default constructor" }
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45
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46 struct I : A { int i; }; // { dg-message "user-provided default constructor" }
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47
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48 template <class T>
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49 void g ()
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50 {
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51 T const t; // { dg-error "uninitialized 'const" }
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111
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52 extern T const text;
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53 }
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54
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55 template void g<H> ();
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56 template void g<I> ();
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