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69cd776e1e
arguments. * Adds 'nonnull' and 'dereferenceable(N)' to 'this' pointer arguments * Gates 'nonnull' on -f(no-)delete-null-pointer-checks * Introduces this-nonnull.cpp and microsoft-abi-this-nullable.cpp tests to explicitly test the behavior of this change * Refactors hundreds of over-constrained clang tests to permit these attributes, where needed * Updates Clang12 patch notes mentioning this change Reviewed-by: rsmith, jdoerfert Differential Revision: https://reviews.llvm.org/D17993
46 lines
1.7 KiB
C++
46 lines
1.7 KiB
C++
// RUN: %clang_cc1 -mconstructor-aliases %s -triple x86_64-windows-msvc -fms-extensions -emit-llvm -o - | FileCheck %s
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// PR32990
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// Introduces the virtual destructor. We should use the base destructor
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// directly, no thunk needed.
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struct __declspec(dllimport) ImportIntroVDtor {
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virtual ~ImportIntroVDtor() {}
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};
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struct BaseClass {
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virtual ~BaseClass() {}
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};
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// Non-virtually inherits from a non-dllimport base class. We should again call
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// the derived base constructor directly. No need for the complete (aka vbase)
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// destructor.
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struct __declspec(dllimport) ImportOverrideVDtor : public BaseClass {
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virtual ~ImportOverrideVDtor() {}
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};
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// Virtually inherits from a non-dllimport base class. In this case, we can
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// expect the DLL to provide a definition of the complete dtor. See
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// dllexport-dtor-thunks.cpp.
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struct __declspec(dllimport) ImportVBaseOverrideVDtor
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: public virtual BaseClass {
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virtual ~ImportVBaseOverrideVDtor() {}
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};
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extern "C" void testit() {
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ImportIntroVDtor t1;
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ImportOverrideVDtor t2;
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ImportVBaseOverrideVDtor t3;
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}
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// The destructors are called in reverse order of construction. Only the third
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// needs the complete destructor (_D).
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// CHECK-LABEL: define dso_local void @testit()
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// CHECK: call void @"??_DImportVBaseOverrideVDtor@@QEAAXXZ"(%struct.ImportVBaseOverrideVDtor* {{[^,]*}} %{{.*}})
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// CHECK: call void @"??1ImportOverrideVDtor@@UEAA@XZ"(%struct.ImportOverrideVDtor* {{[^,]*}} %{{.*}})
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// CHECK: call void @"??1ImportIntroVDtor@@UEAA@XZ"(%struct.ImportIntroVDtor* {{[^,]*}} %{{.*}})
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// CHECK-LABEL: declare dllimport void @"??_DImportVBaseOverrideVDtor@@QEAAXXZ"
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// CHECK-LABEL: declare dllimport void @"??1ImportOverrideVDtor@@UEAA@XZ"
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// CHECK-LABEL: declare dllimport void @"??1ImportIntroVDtor@@UEAA@XZ"
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