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