| // RUN: %clang_cc1 -mconstructor-aliases %s -triple x86_64-windows-msvc -fms-extensions -emit-llvm -o - | FileCheck %s |
| |
| // FIXME: We should really consider removing -mconstructor-aliases for MS C++ |
| // ABI. The risk of bugs introducing ABI incompatibility under |
| // -mno-constructor-aliases is too high. |
| |
| // PR32990 |
| |
| // Introduces the virtual destructor. We should use the base destructor |
| // directly, no thunk needed. |
| struct __declspec(dllimport) ImportIntroVDtor { |
| virtual ~ImportIntroVDtor() {} |
| }; |
| |
| struct BaseClass { |
| virtual ~BaseClass() {} |
| }; |
| |
| // Non-virtually inherits from a non-dllimport base class. We should again call |
| // the derived base constructor directly. No need for the complete (aka vbase) |
| // destructor. |
| struct __declspec(dllimport) ImportOverrideVDtor : public BaseClass { |
| virtual ~ImportOverrideVDtor() {} |
| }; |
| |
| // Virtually inherits from a non-dllimport base class. This time we need to call |
| // the complete destructor and emit it inline. It's not exported from the DLL, |
| // and it must be emitted. |
| struct __declspec(dllimport) ImportVBaseOverrideVDtor |
| : public virtual BaseClass { |
| virtual ~ImportVBaseOverrideVDtor() {} |
| }; |
| |
| extern "C" void testit() { |
| ImportIntroVDtor t1; |
| ImportOverrideVDtor t2; |
| ImportVBaseOverrideVDtor t3; |
| } |
| |
| // The destructors are called in reverse order of construction. Only the third |
| // needs the complete destructor (_D). |
| // CHECK-LABEL: define void @testit() |
| // CHECK: call void @"\01??_DImportVBaseOverrideVDtor@@QEAAXXZ"(%struct.ImportVBaseOverrideVDtor* %{{.*}}) |
| // CHECK: call void @"\01??1ImportOverrideVDtor@@UEAA@XZ"(%struct.ImportOverrideVDtor* %{{.*}}) |
| // CHECK: call void @"\01??1ImportIntroVDtor@@UEAA@XZ"(%struct.ImportIntroVDtor* %{{.*}}) |
| |
| // CHECK-LABEL: define linkonce_odr void @"\01??_DImportVBaseOverrideVDtor@@QEAAXXZ" |
| // CHECK-LABEL: declare dllimport void @"\01??1ImportOverrideVDtor@@UEAA@XZ" |
| // CHECK-LABEL: declare dllimport void @"\01??1ImportIntroVDtor@@UEAA@XZ" |