1 // RUN: %clang_cc1 -mconstructor-aliases %s -triple x86_64-windows-msvc -fms-extensions -emit-llvm -o - | FileCheck %s
2 
3 // PR32990
4 
5 // Introduces the virtual destructor. We should use the base destructor
6 // directly, no thunk needed.
7 struct __declspec(dllimport) ImportIntroVDtor {
~ImportIntroVDtor()8   virtual ~ImportIntroVDtor() {}
9 };
10 
11 struct BaseClass {
~BaseClassBaseClass12   virtual ~BaseClass() {}
13 };
14 
15 // Non-virtually inherits from a non-dllimport base class. We should again call
16 // the derived base constructor directly. No need for the complete (aka vbase)
17 // destructor.
18 struct __declspec(dllimport) ImportOverrideVDtor : public BaseClass {
19   virtual ~ImportOverrideVDtor() {}
20 };
21 
22 // Virtually inherits from a non-dllimport base class. In this case, we can
23 // expect the DLL to provide a definition of the complete dtor. See
24 // dllexport-dtor-thunks.cpp.
25 struct __declspec(dllimport) ImportVBaseOverrideVDtor
26     : public virtual BaseClass {
27   virtual ~ImportVBaseOverrideVDtor() {}
28 };
29 
30 extern "C" void testit() {
31   ImportIntroVDtor t1;
32   ImportOverrideVDtor t2;
33   ImportVBaseOverrideVDtor t3;
34 }
35 
36 // The destructors are called in reverse order of construction. Only the third
37 // needs the complete destructor (_D).
38 // CHECK-LABEL: define dso_local void @testit()
39 // CHECK:  call void @"??_DImportVBaseOverrideVDtor@@QEAAXXZ"(%struct.ImportVBaseOverrideVDtor* %{{.*}})
40 // CHECK:  call void @"??1ImportOverrideVDtor@@UEAA@XZ"(%struct.ImportOverrideVDtor* %{{.*}})
41 // CHECK:  call void @"??1ImportIntroVDtor@@UEAA@XZ"(%struct.ImportIntroVDtor* %{{.*}})
42 
43 // CHECK-LABEL: declare dllimport void @"??_DImportVBaseOverrideVDtor@@QEAAXXZ"
44 // CHECK-LABEL: declare dllimport void @"??1ImportOverrideVDtor@@UEAA@XZ"
45 // CHECK-LABEL: declare dllimport void @"??1ImportIntroVDtor@@UEAA@XZ"
46