1 // Test -fsanitize-memory-use-after-dtor 2 // RUN: %clang_cc1 -fsanitize=memory -fsanitize-memory-use-after-dtor -std=c++11 -triple=x86_64-pc-linux -emit-llvm -o - %s | FileCheck %s 3 // RUN: %clang_cc1 -DATTRIBUTE -fsanitize=memory -fsanitize-memory-use-after-dtor -std=c++11 -triple=x86_64-pc-linux -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-ATTR 4 5 template <class T> class Vector { 6 public: 7 ~Vector() {} 8 }; 9 10 struct No_San { 11 Vector<int> v; 12 No_San() { } 13 #ifdef ATTRIBUTE 14 __attribute__((no_sanitize_memory)) ~No_San() = default; 15 #else 16 ~No_San() = default; 17 #endif 18 }; 19 20 int main() { 21 No_San *ns = new No_San(); 22 ns->~No_San(); 23 return 0; 24 } 25 26 // Repressing the sanitization attribute results in no msan 27 // instrumentation of the destructor 28 // CHECK: define {{.*}}No_SanD1Ev{{.*}} [[ATTRIBUTE:#[0-9]+]] 29 // CHECK: call void {{.*}}No_SanD2Ev 30 // CHECK: call void @__sanitizer_dtor_callback 31 // CHECK: ret void 32 33 // CHECK-ATTR: define {{.*}}No_SanD1Ev{{.*}} [[ATTRIBUTE:#[0-9]+]] 34 // CHECK-ATTR: call void {{.*}}No_SanD2Ev 35 // CHECK-ATTR-NOT: call void @__sanitizer_dtor_callback 36 // CHECK-ATTR: ret void 37 38 39 // CHECK: define {{.*}}No_SanD2Ev{{.*}} [[ATTRIBUTE:#[0-9]+]] 40 // CHECK: call void {{.*}}Vector 41 // CHECK: call void @__sanitizer_dtor_callback 42 // CHECK: ret void 43 44 // CHECK-ATTR: define {{.*}}No_SanD2Ev{{.*}} [[ATTRIBUTE:#[0-9]+]] 45 // CHECK-ATTR: call void {{.*}}Vector 46 // CHECK-ATTR-NOT: call void @__sanitizer_dtor_callback 47 // CHECK-ATTR: ret void 48 49 // When attribute is repressed, the destructor does not emit any tail calls 50 // CHECK: attributes [[ATTRIBUTE]] = {{.*}} sanitize_memory 51 // CHECK-ATTR-NOT: attributes [[ATTRIBUTE]] = {{.*}} sanitize_memory 52