1 // PR c++/42844
2 // { dg-do compile }
3
4 struct A
5 {
AA6 A(){}
7 };
8
9 struct B : A { int i; }; // { dg-message "user-provided default constructor" }
10
11 struct C : A { int i; }; // { dg-message "user-provided default constructor" }
12
DD13 struct D : B { D() {} };
14
15 struct E { int i; }; // { dg-message "user-provided default constructor" }
16
17 template <class T>
18 struct F : A { T t; }; // { dg-message "user-provided default constructor" }
19
20 template <class T>
21 struct G { T t; }; // { dg-message "user-provided default constructor" }
22
f()23 void f ()
24 {
25 B const b; // { dg-error "uninitialized 'const" }
26 extern B const bext;
27
28 C const c[ 1 ]; // { dg-error "uninitialized 'const" }
29 extern C const cext[ 1 ];
30
31 D const d;
32 extern D const dext;
33
34 E const e; // { dg-error "uninitialized 'const" }
35 extern E const eext;
36
37 F<int> const f; // { dg-error "uninitialized 'const" }
38 extern F<int> const fext;
39
40 G<int> const g; // { dg-error "uninitialized 'const" }
41 extern G<int> const gext;
42 }
43
44 struct H { int i; }; // { dg-message "user-provided default constructor" }
45
46 struct I : A { int i; }; // { dg-message "user-provided default constructor" }
47
48 template <class T>
g()49 void g ()
50 {
51 T const t; // { dg-error "uninitialized 'const" }
52 extern T const text; // { dg-error "conflicting declaration" }
53 }
54
55 template void g<H> ();
56 template void g<I> ();
57