xref: /aosp_15_r20/external/clang/test/CodeGenCXX/sanitize-dtor-fn-attribute.cpp (revision 67e74705e28f6214e480b399dd47ea732279e315)
1*67e74705SXin Li // Test -fsanitize-memory-use-after-dtor
2*67e74705SXin Li // 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*67e74705SXin Li 
4*67e74705SXin Li // The no_sanitize_memory attribute, when applied to a destructor,
5*67e74705SXin Li // represses emission of sanitizing callback
6*67e74705SXin Li 
7*67e74705SXin Li template <class T> class Vector {
8*67e74705SXin Li  public:
9*67e74705SXin Li   int size;
~Vector()10*67e74705SXin Li   ~Vector() {}
11*67e74705SXin Li };
12*67e74705SXin Li 
13*67e74705SXin Li struct No_San {
14*67e74705SXin Li   Vector<int> v;
15*67e74705SXin Li   int x;
No_SanNo_San16*67e74705SXin Li   No_San() { }
17*67e74705SXin Li   __attribute__((no_sanitize_memory)) ~No_San() = default;
18*67e74705SXin Li };
19*67e74705SXin Li 
main()20*67e74705SXin Li int main() {
21*67e74705SXin Li   No_San *ns = new No_San();
22*67e74705SXin Li   ns->~No_San();
23*67e74705SXin Li   return 0;
24*67e74705SXin Li }
25*67e74705SXin Li 
26*67e74705SXin Li // Repressing the sanitization attribute results in no msan
27*67e74705SXin Li // instrumentation of the destructor
28*67e74705SXin Li // CHECK: define {{.*}}No_SanD1Ev{{.*}} [[ATTRIBUTE:#[0-9]+]]
29*67e74705SXin Li // CHECK-NOT: call void {{.*}}sanitizer_dtor_callback
30*67e74705SXin Li // CHECK: ret void
31*67e74705SXin Li 
32*67e74705SXin Li // CHECK: define {{.*}}No_SanD2Ev{{.*}} [[ATTRIBUTE:#[0-9]+]]
33*67e74705SXin Li // CHECK-NOT: call void {{.*}}sanitizer_dtor_callback
34*67e74705SXin Li // CHECK: call void {{.*}}VectorIiED2Ev
35*67e74705SXin Li // CHECK-NOT: call void {{.*}}sanitizer_dtor_callback
36*67e74705SXin Li // CHECK: ret void
37*67e74705SXin Li 
38*67e74705SXin Li // CHECK: define {{.*}}VectorIiED2Ev
39*67e74705SXin Li // CHECK: call void {{.*}}sanitizer_dtor_callback
40*67e74705SXin Li // CHECK: ret void
41*67e74705SXin Li 
42*67e74705SXin Li // When attribute is repressed, the destructor does not emit any tail calls
43*67e74705SXin Li // CHECK-NOT: attributes [[ATTRIBUTE]] = {{.*}} sanitize_memory
44