| Evgeniy Stepanov | 7cacbe4 | 2015-07-14 00:34:50 +0000 | [diff] [blame] | 1 | // Test -fsanitize-memory-use-after-dtor |
| 2 | // RUN: %clang_cc1 -fsanitize=memory -fsanitize-memory-use-after-dtor -triple=x86_64-pc-linux -emit-llvm -o - %s | FileCheck %s |
| Naomi Musgrave | d3ec7c3 | 2015-07-15 22:57:10 +0000 | [diff] [blame] | 3 | // RUN: %clang_cc1 -fsanitize=memory -triple=x86_64-pc-linux -emit-llvm -o - %s | FileCheck %s -check-prefix=NO-DTOR-CHECK |
| 4 | |
| 5 | // RUN: %clang_cc1 -std=c++11 -fsanitize=memory -fsanitize-memory-use-after-dtor -triple=x86_64-pc-linux -emit-llvm -o - %s | FileCheck %s -check-prefix=STD11 |
| 6 | // RUN: %clang_cc1 -std=c++11 -fsanitize=memory -triple=x86_64-pc-linux -emit-llvm -o - %s | FileCheck %s -check-prefix=NO-DTOR-STD11-CHECK |
| Evgeniy Stepanov | 7cacbe4 | 2015-07-14 00:34:50 +0000 | [diff] [blame] | 7 | |
| 8 | struct Simple { |
| 9 | ~Simple() {} |
| 10 | }; |
| 11 | Simple s; |
| 12 | // Simple internal member is poisoned by compiler-generated dtor |
| 13 | // CHECK-LABEL: @_ZN6SimpleD2Ev |
| 14 | // CHECK: call void @__sanitizer_dtor_callback |
| 15 | // CHECK: ret void |
| 16 | |
| 17 | // Compiling without the flag does not generate member-poisoning dtor |
| Naomi Musgrave | d3ec7c3 | 2015-07-15 22:57:10 +0000 | [diff] [blame] | 18 | // NO-DTOR-CHECK-LABEL: @_ZN6SimpleD2Ev |
| 19 | // NO-DTOR-CHECK-NOT: call void @__sanitizer_dtor_callback |
| 20 | // NO-DTOR-CHECK: ret void |
| 21 | |
| 22 | |
| 23 | struct Inlined { |
| 24 | inline ~Inlined() {} |
| 25 | }; |
| 26 | Inlined in; |
| 27 | // Dtor that is inlined where invoked poisons object |
| 28 | // CHECK-LABEL: @_ZN7InlinedD2Ev |
| 29 | // CHECK: call void @__sanitizer_dtor_callback |
| 30 | // CHECK: ret void |
| 31 | |
| 32 | // Compiling without the flag does not generate member-poisoning dtor |
| 33 | // NO-DTOR-CHECK-LABEL: @_ZN7InlinedD2Ev |
| 34 | // NO-DTOR-CHECK-NOT: call void @__sanitizer_dtor_callback |
| 35 | // NO-DTOR-CHECK: ret void |
| 36 | |
| 37 | |
| 38 | struct Defaulted_Trivial { |
| 39 | ~Defaulted_Trivial() = default; |
| 40 | }; |
| 41 | int main() { |
| 42 | Defaulted_Trivial def_trivial; |
| 43 | } |
| 44 | // The compiler is explicitly signalled to handle object cleanup. |
| 45 | // No complex member attributes ensures that the compiler destroys |
| 46 | // the memory inline. However, it must still poison this memory. |
| 47 | // STD11-CHECK-LABEL: alloca %struct.Defaulted_Trivial |
| 48 | // STD11: call void @__sanitizer_dtor_callback |
| 49 | // STD11: ret void |
| 50 | |
| 51 | // Compiling without the flag does not generate member-poisoning dtor |
| 52 | // NO-DTOR-STD11-CHECK-LABEL: alloca %struct.Defaulted_Trivial |
| 53 | // NO-DTOR-STD11-CHECK-NOT: call void @__sanitizer_dtor_callback |
| 54 | // NO-DTOR-STD11-CHECK: ret void |
| 55 | |
| 56 | |
| 57 | struct Defaulted_Non_Trivial { |
| 58 | Simple s; |
| 59 | ~Defaulted_Non_Trivial() = default; |
| 60 | }; |
| 61 | Defaulted_Non_Trivial def_non_trivial; |
| 62 | // Explicitly compiler-generated dtor poisons object. |
| 63 | // By including a Simple member in the struct, the compiler is |
| 64 | // forced to generate a non-trivial destructor.. |
| 65 | // STD11-CHECK-LABEL: @_ZN21Defaulted_Non_TrivialD2Ev |
| 66 | // STD11: call void @__sanitizer_dtor_callback |
| 67 | // STD11: ret void |
| 68 | |
| 69 | // Compiling without the flag does not generate member-poisoning dtor |
| 70 | // NO-DTOR-STD11-CHECK-LABEL: @_ZN21Defaulted_Non_TrivialD2Ev |
| 71 | // NO-DTOR-STD11-CHECK-NOT: call void @__sanitizer_dtor_callback |
| 72 | // NO-DTOR-STD11-CHECK: ret void |