| Evgeniy Stepanov | 7cacbe4 | 2015-07-14 00:34:50 +0000 | [diff] [blame] | 1 | // Test -fsanitize-memory-use-after-dtor |
| Naomi Musgrave | b7b02ad | 2015-07-16 00:25:45 +0000 | [diff] [blame] | 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 |
| Evgeniy Stepanov | 7cacbe4 | 2015-07-14 00:34:50 +0000 | [diff] [blame] | 3 | |
| Naomi Musgrave | e50cb9b | 2015-08-13 18:35:11 +0000 | [diff] [blame] | 4 | // Sanitizing dtor is emitted in dtor for every class |
| 5 | |
| Evgeniy Stepanov | 7cacbe4 | 2015-07-14 00:34:50 +0000 | [diff] [blame] | 6 | struct Simple { |
| Naomi Musgrave | e50cb9b | 2015-08-13 18:35:11 +0000 | [diff] [blame] | 7 | int x; |
| Evgeniy Stepanov | 7cacbe4 | 2015-07-14 00:34:50 +0000 | [diff] [blame] | 8 | ~Simple() {} |
| 9 | }; |
| 10 | Simple s; |
| 11 | // Simple internal member is poisoned by compiler-generated dtor |
| Naomi Musgrave | b7b02ad | 2015-07-16 00:25:45 +0000 | [diff] [blame] | 12 | // CHECK-LABEL: define {{.*}}SimpleD1Ev |
| Naomi Musgrave | e50cb9b | 2015-08-13 18:35:11 +0000 | [diff] [blame] | 13 | // CHECK: call void {{.*}}SimpleD2Ev |
| Evgeniy Stepanov | 7cacbe4 | 2015-07-14 00:34:50 +0000 | [diff] [blame] | 14 | // CHECK: ret void |
| 15 | |
| Naomi Musgrave | d3ec7c3 | 2015-07-15 22:57:10 +0000 | [diff] [blame] | 16 | struct Inlined { |
| Naomi Musgrave | e50cb9b | 2015-08-13 18:35:11 +0000 | [diff] [blame] | 17 | int y; |
| Naomi Musgrave | d3ec7c3 | 2015-07-15 22:57:10 +0000 | [diff] [blame] | 18 | inline ~Inlined() {} |
| 19 | }; |
| Naomi Musgrave | b7b02ad | 2015-07-16 00:25:45 +0000 | [diff] [blame] | 20 | Inlined i; |
| 21 | // Simple internal member is poisoned by compiler-generated dtor |
| 22 | // CHECK-LABEL: define {{.*}}InlinedD1Ev |
| Naomi Musgrave | e50cb9b | 2015-08-13 18:35:11 +0000 | [diff] [blame] | 23 | // CHECK: call void {{.*}}InlinedD2Ev |
| Naomi Musgrave | d3ec7c3 | 2015-07-15 22:57:10 +0000 | [diff] [blame] | 24 | // CHECK: ret void |
| 25 | |
| Naomi Musgrave | d3ec7c3 | 2015-07-15 22:57:10 +0000 | [diff] [blame] | 26 | struct Defaulted_Trivial { |
| 27 | ~Defaulted_Trivial() = default; |
| 28 | }; |
| Naomi Musgrave | b7b02ad | 2015-07-16 00:25:45 +0000 | [diff] [blame] | 29 | void create_def_trivial() { |
| Naomi Musgrave | d3ec7c3 | 2015-07-15 22:57:10 +0000 | [diff] [blame] | 30 | Defaulted_Trivial def_trivial; |
| 31 | } |
| 32 | // The compiler is explicitly signalled to handle object cleanup. |
| Naomi Musgrave | b7b02ad | 2015-07-16 00:25:45 +0000 | [diff] [blame] | 33 | // No complex member attributes. Compiler destroys inline, so |
| 34 | // no destructor defined. |
| 35 | // CHECK-LABEL: define {{.*}}create_def_trivial |
| 36 | // CHECK-NOT: call {{.*}}Defaulted_Trivial |
| Naomi Musgrave | b7b02ad | 2015-07-16 00:25:45 +0000 | [diff] [blame] | 37 | // CHECK: ret void |
| Naomi Musgrave | d3ec7c3 | 2015-07-15 22:57:10 +0000 | [diff] [blame] | 38 | |
| 39 | struct Defaulted_Non_Trivial { |
| 40 | Simple s; |
| 41 | ~Defaulted_Non_Trivial() = default; |
| 42 | }; |
| 43 | Defaulted_Non_Trivial def_non_trivial; |
| 44 | // Explicitly compiler-generated dtor poisons object. |
| 45 | // By including a Simple member in the struct, the compiler is |
| Naomi Musgrave | b7b02ad | 2015-07-16 00:25:45 +0000 | [diff] [blame] | 46 | // forced to generate a non-trivial destructor. |
| 47 | // CHECK-LABEL: define {{.*}}Defaulted_Non_TrivialD1Ev |
| Naomi Musgrave | e50cb9b | 2015-08-13 18:35:11 +0000 | [diff] [blame] | 48 | // CHECK: call void {{.*}}Defaulted_Non_TrivialD2 |
| Naomi Musgrave | b7b02ad | 2015-07-16 00:25:45 +0000 | [diff] [blame] | 49 | // CHECK: ret void |
| Naomi Musgrave | d3ec7c3 | 2015-07-15 22:57:10 +0000 | [diff] [blame] | 50 | |
| Naomi Musgrave | b7b02ad | 2015-07-16 00:25:45 +0000 | [diff] [blame] | 51 | |
| 52 | // Note: ordering is important. In the emitted bytecode, these |
| 53 | // second dtors defined after the first. Explicitly checked here |
| 54 | // to confirm that all invoked dtors have member poisoning |
| 55 | // instrumentation inserted. |
| 56 | // CHECK-LABEL: define {{.*}}SimpleD2Ev |
| 57 | // CHECK: call void @__sanitizer_dtor_callback |
| 58 | // CHECK-NOT: call void @__sanitizer_dtor_callback |
| 59 | // CHECK: ret void |
| 60 | |
| 61 | // CHECK-LABEL: define {{.*}}InlinedD2Ev |
| 62 | // CHECK: call void @__sanitizer_dtor_callback |
| 63 | // CHECK-NOT: call void @__sanitizer_dtor_callback |
| 64 | // CHECK: ret void |
| 65 | |
| 66 | // CHECK-LABEL: define {{.*}}Defaulted_Non_TrivialD2Ev |
| 67 | // CHECK: call void @__sanitizer_dtor_callback |
| 68 | // CHECK-NOT: call void @__sanitizer_dtor_callback |
| 69 | // CHECK: ret void |