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