derived-to-base-conv.cpp revision a5728872c7702ddd09537c95bc3cbd20e1f2fb09 
1// RUN: %clang_cc1 -triple x86_64-apple-darwin -std=c++0x -S %s -o %t-64.s
2// RUN: FileCheck -check-prefix LP64 --input-file=%t-64.s %s
3// RUN: %clang_cc1 -triple i386-apple-darwin -std=c++0x -S %s -o %t-32.s
4// RUN: FileCheck -check-prefix LP32 --input-file=%t-32.s %s
5
6extern "C" int printf(...);
7extern "C" void exit(int);
8
9struct A {
10 A (const A&) { printf("A::A(const A&)\n"); }
11 A() {};
12};
13
14struct B : public A {
15  B() {};
16};
17
18struct C : public B {
19  C() {};
20};
21
22struct X {
23	operator B&() {printf("X::operator B&()\n"); return b; }
24	operator C&() {printf("X::operator C&()\n"); return c; }
25 	X (const X&) { printf("X::X(const X&)\n"); }
26 	X () { printf("X::X()\n"); }
27	B b;
28	C c;
29};
30
31void f(A) {
32  printf("f(A)\n");
33}
34
35
36void func(X x)
37{
38  f (x);
39}
40
41int main()
42{
43    X x;
44    func(x);
45}
46
47struct Base;
48
49struct Root {
50  operator Base&() { exit(1); }
51};
52
53struct Derived;
54
55struct Base : Root {
56  Base(const Base&) { printf("Base::(const Base&)\n"); }
57  Base() { printf("Base::Base()\n"); }
58  operator Derived&() { exit(1); }
59};
60
61struct Derived : Base {
62};
63
64void foo(Base) {}
65
66void test(Derived bb)
67{
68	// CHECK-LP64-NOT: call     __ZN4BasecvR7DerivedEv
69	// CHECK-LP32-NOT: call     L__ZN4BasecvR7DerivedEv
70        foo(bb);
71}
72// CHECK-LP64: call     __ZN1XcvR1BEv
73// CHECK-LP64: call     __ZN1AC1ERKS_
74
75// CHECK-LP32: call     L__ZN1XcvR1BEv
76// CHECK-LP32: call     L__ZN1AC1ERKS_
77
78
79