1 // { dg-do run  }
2 // g++ 1.37.1 bug 900520_06
3 
4 // When an object of a class type is passed into a formal parameter of the
5 // same class type (in a function call) the language definition calls for
6 // this action to be treated like any other form of an initialization of
7 // an object of the given class type.
8 
9 // g++ fails however to invoke the (compiler-supplied) copy constructor for
10 // the class type when a parameter of the class type is passed as an
11 // actual parameter.
12 
13 // This causes the following program to exit with a nonzero exit status.
14 
15 // cfront 2.0 passes this test.
16 
17 int base_copy_ctor_called = 0;
18 int member_copy_ctor_called = 0;
19 
20 struct struct_0 {
21   struct_0 ();
22   struct_0 (const struct_0&);
23 };
24 
struct_0()25 struct_0::struct_0 ()
26 {
27 }
28 
struct_0(const struct_0 &)29 struct_0::struct_0 (const struct_0&)
30 {
31   base_copy_ctor_called++;
32 }
33 
34 struct struct_1 {
35   struct_1 ();
36   struct_1 (const struct_1&);
37 };
38 
struct_1()39 struct_1::struct_1 ()
40 {
41 }
42 
struct_1(const struct_1 &)43 struct_1::struct_1 (const struct_1&)
44 {
45   member_copy_ctor_called++;
46 }
47 
48 struct struct_2 : public struct_0 {
49   struct_2 ();
50   struct_1 struct_1_member;
51 #ifdef MAKE_COPY_CONSTRUCTOR_EXPLICIT
52   struct_2 (const struct_2&);
53 #endif
54 };
55 
struct_2()56 struct_2::struct_2 ()
57 {
58 }
59 
60 #ifdef MAKE_COPY_CONSTRUCTOR_EXPLICIT
struct_2(const struct_2 & arg)61 struct_2::struct_2 (const struct_2& arg) :
62   struct_0 ((struct_0&)arg),
63   struct_1_member (arg.struct_1_member)
64 {
65 }
66 #endif
67 
take_struct_2(struct_2 arg)68 void take_struct_2 (struct_2 arg)
69 {
70 }
71 
test()72 int test ()
73 {
74   struct_2 struct_2_object0;
75   take_struct_2 (struct_2_object0);
76   return (base_copy_ctor_called != 1 || member_copy_ctor_called != 1);
77 }
78 
main()79 int main () { return test (); }
80