1 // Check that destructors of memcpy-able struct members are called properly
2 // during stack unwinding after an exception.
3 //
4 // Check that destructor's argument (address of member to be destroyed) is
5 // obtained by taking offset from struct, not by bitcasting pointers.
6 //
7 // RUN: %clang_cc1 -triple x86_64-unknown-unknown -fexceptions -fcxx-exceptions -O0 -fno-elide-constructors -emit-llvm %s -o - | FileCheck %s
8 
9 struct ImplicitCopy {
10   int id;
ImplicitCopyImplicitCopy11   ImplicitCopy() { id = 10; }
~ImplicitCopyImplicitCopy12   ~ImplicitCopy() { id = 20; }
13 };
14 
15 struct ThrowCopy {
16   int id;
ThrowCopyThrowCopy17   ThrowCopy() { id = 15; }
ThrowCopyThrowCopy18   ThrowCopy(const ThrowCopy &x) {
19     id = 25;
20     throw 1;
21   }
~ThrowCopyThrowCopy22   ~ThrowCopy() { id = 35; }
23 };
24 
25 struct Container {
26   int id;
27   ImplicitCopy o1;
28   ThrowCopy o2;
29 
ContainerContainer30   Container() { id = 1000; }
~ContainerContainer31   ~Container() { id = 2000; }
32 };
33 
main()34 int main() {
35   try {
36     Container c1;
37     // CHECK-LABEL: main
38     // CHECK: %{{.+}} = getelementptr inbounds %struct.Container, %struct.Container* %{{.+}}, i32 0, i32 1
39     // CHECK-NOT: %{{.+}} = bitcast %struct.Container* %{{.+}} to %struct.ImplicitCopy*
40     Container c2(c1);
41 
42     return 2;
43   } catch (...) {
44     return 1;
45   }
46   return 0;
47 }
48