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 7 template <class T> class Vector { 8 public: 9 int size; 10 ~Vector() {} 11 }; 12 13 struct No_San { 14 Vector<int> v; 15 int x; 16 No_San() { } 17 __attribute__((no_sanitize_memory)) ~No_San() = default; 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-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
