| Naomi Musgrave | bb4df94 | 2015-08-03 22:53:11 +0000 | [diff] [blame^] | 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 | // RUN: %clang_cc1 -DATTRIBUTE -fsanitize=memory -fsanitize-memory-use-after-dtor -std=c++11 -triple=x86_64-pc-linux -emit-llvm -o - %s | FileCheck %s --check-prefix=CHECK-ATTR |
| 4 | |
| 5 | template <class T> class Vector { |
| 6 | public: |
| 7 | ~Vector() {} |
| 8 | }; |
| 9 | |
| 10 | struct No_San { |
| 11 | Vector<int> v; |
| 12 | No_San() { } |
| 13 | #ifdef ATTRIBUTE |
| 14 | __attribute__((no_sanitize_memory)) ~No_San() = default; |
| 15 | #else |
| 16 | ~No_San() = default; |
| 17 | #endif |
| 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: call void {{.*}}No_SanD2Ev |
| 30 | // CHECK: call void @__sanitizer_dtor_callback |
| 31 | // CHECK: ret void |
| 32 | |
| 33 | // CHECK-ATTR: define {{.*}}No_SanD1Ev{{.*}} [[ATTRIBUTE:#[0-9]+]] |
| 34 | // CHECK-ATTR: call void {{.*}}No_SanD2Ev |
| 35 | // CHECK-ATTR-NOT: call void @__sanitizer_dtor_callback |
| 36 | // CHECK-ATTR: ret void |
| 37 | |
| 38 | |
| 39 | // CHECK: define {{.*}}No_SanD2Ev{{.*}} [[ATTRIBUTE:#[0-9]+]] |
| 40 | // CHECK: call void {{.*}}Vector |
| 41 | // CHECK: call void @__sanitizer_dtor_callback |
| 42 | // CHECK: ret void |
| 43 | |
| 44 | // CHECK-ATTR: define {{.*}}No_SanD2Ev{{.*}} [[ATTRIBUTE:#[0-9]+]] |
| 45 | // CHECK-ATTR: call void {{.*}}Vector |
| 46 | // CHECK-ATTR-NOT: call void @__sanitizer_dtor_callback |
| 47 | // CHECK-ATTR: ret void |
| 48 | |
| 49 | // When attribute is repressed, the destructor does not emit any tail calls |
| 50 | // CHECK: attributes [[ATTRIBUTE]] = {{.*}} sanitize_memory |
| 51 | // CHECK-ATTR-NOT: attributes [[ATTRIBUTE]] = {{.*}} sanitize_memory |