| 1 | // RUN: %clang_cc1 -fsanitize=memory -fsanitize-memory-use-after-dtor -disable-llvm-passes -std=c++11 -triple=x86_64-pc-linux -emit-llvm -o - %s | FileCheck %s |
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| 2 | // RUN: %clang_cc1 -O1 -fsanitize=memory -fsanitize-memory-use-after-dtor -disable-llvm-passes -std=c++11 -triple=x86_64-pc-linux -emit-llvm -o - %s | FileCheck %s |
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| 3 | |
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| 4 | // Base dtor poisons members |
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| 5 | // Complete dtor poisons vtable ptr after destroying members and |
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| 6 | // virtual bases |
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| 7 | |
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| 8 | class Base { |
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| 9 | public: |
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| 10 | int x; |
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| 11 | Base() { |
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| 12 | x = 5; |
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| 13 | } |
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| 14 | virtual ~Base() { |
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| 15 | x += 1; |
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| 16 | } |
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| 17 | }; |
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| 18 | |
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| 19 | class Derived : public Base { |
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| 20 | public: |
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| 21 | int y; |
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| 22 | Derived() { |
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| 23 | y = 10; |
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| 24 | } |
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| 25 | ~Derived() { |
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| 26 | y += 1; |
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| 27 | } |
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| 28 | }; |
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| 29 | |
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| 30 | Derived d; |
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| 31 | |
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| 32 | // Invoke base destructor. No vtable pointer to poison. |
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| 33 | // CHECK-LABEL: define {{.*}}DerivedD1Ev |
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| 34 | // CHECK-NOT: call void @__sanitizer_dtor_callback |
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| 35 | // CHECK: call void {{.*}}DerivedD2Ev |
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| 36 | // CHECK-NOT: call void @__sanitizer_dtor_callback |
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| 37 | // CHECK: ret void |
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| 38 | |
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| 39 | // CHECK-LABEL: define {{.*}}DerivedD0Ev |
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| 40 | // CHECK-NOT: call void @__sanitizer_dtor_callback |
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| 41 | // CHECK: call void {{.*}}DerivedD1Ev |
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| 42 | // CHECK-NOT: call void @__sanitizer_dtor_callback |
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| 43 | // CHECK: ret void |
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| 44 | |
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| 45 | // Invokes base destructor, and poison vtable pointer. |
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| 46 | // CHECK-LABEL: define {{.*}}BaseD1Ev |
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| 47 | // CHECK-NOT: call void @__sanitizer_dtor_callback |
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| 48 | // CHECK: call void {{.*}}BaseD2Ev |
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| 49 | // CHECK-NOT: call void @__sanitizer_dtor_callback |
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| 50 | // CHECK: ret void |
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| 51 | |
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| 52 | // CHECK-LABEL: define {{.*}}BaseD0Ev |
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| 53 | // CHECK-NOT: call void @__sanitizer_dtor_callback |
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| 54 | // CHECK: call void {{.*}}BaseD1Ev |
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| 55 | // CHECK-NOT: call void @__sanitizer_dtor_callback |
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| 56 | // CHECK: ret void |
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| 57 | |
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| 58 | // Poison members and vtable ptr. |
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| 59 | // CHECK-LABEL: define {{.*}}BaseD2Ev |
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| 60 | // CHECK: call void @__sanitizer_dtor_callback |
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| 61 | // CHECK: call void @__sanitizer_dtor_callback{{.*}}i64 8 |
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| 62 | // CHECK-NOT: call void @__sanitizer_dtor_callback |
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| 63 | // CHECK: ret void |
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| 64 | |
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| 65 | // Poison members and destroy non-virtual base. |
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| 66 | // CHECK-LABEL: define {{.*}}DerivedD2Ev |
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| 67 | // CHECK: call void @__sanitizer_dtor_callback |
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| 68 | // CHECK-NOT: call void @__sanitizer_dtor_callback |
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| 69 | // CHECK: call void {{.*}}BaseD2Ev |
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| 70 | // CHECK: call void @__sanitizer_dtor_callback{{.*}}i64 8 |
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| 71 | // CHECK: ret void |
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| 72 | |
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