703835c7f3
ptr in dtor. Summary: After destruction, invocation of virtual functions prevented by poisoning vtable pointer. Reviewers: eugenis, kcc Subscribers: cfe-commits Differential Revision: http://reviews.llvm.org/D12712 Fixed testing callback emission order to account for vptr. Poison vtable in either complete or base dtor, depending on if virtual bases exist. If virtual bases exist, poison in complete dtor. Otherwise, poison in base. Remove commented-out block. llvm-svn: 247762
48 lines
1.5 KiB
C++
48 lines
1.5 KiB
C++
// RUN: %clang_cc1 -O0 -fsanitize=memory -fsanitize-memory-use-after-dtor -disable-llvm-optzns -std=c++11 -triple=x86_64-pc-linux -emit-llvm -o - %s | FileCheck %s
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// RUN: %clang_cc1 -O1 -fsanitize=memory -fsanitize-memory-use-after-dtor -disable-llvm-optzns -std=c++11 -triple=x86_64-pc-linux -emit-llvm -o - %s | FileCheck %s
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class A {
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public:
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int x;
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A() {}
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virtual ~A() {}
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};
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A a;
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class B : virtual public A {
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public:
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int y;
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B() {}
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~B() {}
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};
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B b;
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// CHECK-LABEL: define {{.*}}AD1Ev
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// CHECK-NOT: call void @__sanitizer_dtor_callback
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// CHECK: call void {{.*}}AD2Ev
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// CHECK-NOT: call void @__sanitizer_dtor_callback
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// CHECK: ret void
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// After invoking base dtor and dtor for virtual base, poison vtable ptr.
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// CHECK-LABEL: define {{.*}}BD1Ev
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// CHECK-NOT: call void @__sanitizer_dtor_callback
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// CHECK: call void {{.*}}BD2Ev
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// CHECK-NOT: call void @__sanitizer_dtor_callback
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// CHECK: call void {{.*}}AD2Ev
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// CHECK: call void @__sanitizer_dtor_callback{{.*}}i64 8
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// CHECK-NOT: call void @__sanitizer_dtor_callback
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// CHECK: ret void
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// Since no virtual bases, poison vtable ptr here.
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// CHECK-LABEL: define {{.*}}AD2Ev
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// CHECK: call void @__sanitizer_dtor_callback
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// CHECK: call void @__sanitizer_dtor_callback{{.*}}i64 8
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// CHECK-NOT: call void @__sanitizer_dtor_callback
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// CHECK: ret void
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// Poison members
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// CHECK-LABEL: define {{.*}}BD2Ev
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// CHECK: call void @__sanitizer_dtor_callback
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// CHECK-NOT: call void @__sanitizer_dtor_callback
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// CHECK: ret void
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