| // Test -fsanitize-memory-use-after-dtor |
| // RUN: %clang_cc1 -fsanitize=memory -fsanitize-memory-use-after-dtor -std=c++11 -triple=x86_64-pc-linux -emit-llvm -o - %s | FileCheck %s |
| |
| // The no_sanitize_memory attribute, when applied to a destructor, |
| // represses emission of sanitizing callback |
| |
| template <class T> class Vector { |
| public: |
| int size; |
| ~Vector() {} |
| }; |
| |
| struct No_San { |
| Vector<int> v; |
| int x; |
| No_San() { } |
| __attribute__((no_sanitize_memory)) ~No_San() = default; |
| }; |
| |
| int main() { |
| No_San *ns = new No_San(); |
| ns->~No_San(); |
| return 0; |
| } |
| |
| // Repressing the sanitization attribute results in no msan |
| // instrumentation of the destructor |
| // CHECK: define {{.*}}No_SanD1Ev{{.*}} [[ATTRIBUTE:#[0-9]+]] |
| // CHECK-NOT: call void {{.*}}sanitizer_dtor_callback |
| // CHECK: ret void |
| |
| // CHECK: define {{.*}}No_SanD2Ev{{.*}} [[ATTRIBUTE:#[0-9]+]] |
| // CHECK-NOT: call void {{.*}}sanitizer_dtor_callback |
| // CHECK: call void {{.*}}VectorIiED2Ev |
| // CHECK-NOT: call void {{.*}}sanitizer_dtor_callback |
| // CHECK: ret void |
| |
| // CHECK: define {{.*}}VectorIiED2Ev |
| // CHECK: call void {{.*}}sanitizer_dtor_callback |
| // CHECK: ret void |
| |
| // When attribute is repressed, the destructor does not emit any tail calls |
| // CHECK-NOT: attributes [[ATTRIBUTE]] = {{.*}} sanitize_memory |
