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 4// The no_sanitize_memory attribute, when applied to a destructor, 5// represses emission of sanitizing callback 6 7template <class T> class Vector { 8 public: 9 int size; 10 ~Vector() {} 11}; 12 13struct No_San { 14 Vector<int> v; 15 int x; 16 No_San() { } 17 __attribute__((no_sanitize_memory)) ~No_San() = default; 18}; 19 20int 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-NOT: call void {{.*}}sanitizer_dtor_callback 30// CHECK: ret void 31 32// CHECK: define {{.*}}No_SanD2Ev{{.*}} [[ATTRIBUTE:#[0-9]+]] 33// CHECK-NOT: call void {{.*}}sanitizer_dtor_callback 34// CHECK: call void {{.*}}VectorIiED2Ev 35// CHECK-NOT: call void {{.*}}sanitizer_dtor_callback 36// CHECK: ret void 37 38// CHECK: define {{.*}}VectorIiED2Ev 39// CHECK: call void {{.*}}sanitizer_dtor_callback 40// CHECK: ret void 41 42// When attribute is repressed, the destructor does not emit any tail calls 43// CHECK-NOT: attributes [[ATTRIBUTE]] = {{.*}} sanitize_memory 44