| 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 | b9b46f5 | 2015-08-14 23:22:03 +0000 | [diff] [blame] | 4 | // Sanitizing dtor is emitted in dtor for every class, and only |
| 5 | // poisons once. |
| Naomi Musgrave | e50cb9b | 2015-08-13 18:35:11 +0000 | [diff] [blame] | 6 | |
| Evgeniy Stepanov | 7cacbe4 | 2015-07-14 00:34:50 +0000 | [diff] [blame] | 7 | struct Simple { |
| Naomi Musgrave | e50cb9b | 2015-08-13 18:35:11 +0000 | [diff] [blame] | 8 | int x; |
| Evgeniy Stepanov | 7cacbe4 | 2015-07-14 00:34:50 +0000 | [diff] [blame] | 9 | ~Simple() {} |
| 10 | }; |
| 11 | Simple s; |
| 12 | // Simple internal member is poisoned by compiler-generated dtor |
| Naomi Musgrave | b7b02ad | 2015-07-16 00:25:45 +0000 | [diff] [blame] | 13 | // CHECK-LABEL: define {{.*}}SimpleD1Ev |
| Naomi Musgrave | e50cb9b | 2015-08-13 18:35:11 +0000 | [diff] [blame] | 14 | // CHECK: call void {{.*}}SimpleD2Ev |
| Evgeniy Stepanov | 7cacbe4 | 2015-07-14 00:34:50 +0000 | [diff] [blame] | 15 | // CHECK: ret void |
| 16 | |
| Naomi Musgrave | d3ec7c3 | 2015-07-15 22:57:10 +0000 | [diff] [blame] | 17 | struct Inlined { |
| Naomi Musgrave | e50cb9b | 2015-08-13 18:35:11 +0000 | [diff] [blame] | 18 | int y; |
| Naomi Musgrave | d3ec7c3 | 2015-07-15 22:57:10 +0000 | [diff] [blame] | 19 | inline ~Inlined() {} |
| 20 | }; |
| Naomi Musgrave | b7b02ad | 2015-07-16 00:25:45 +0000 | [diff] [blame] | 21 | Inlined i; |
| 22 | // Simple internal member is poisoned by compiler-generated dtor |
| 23 | // CHECK-LABEL: define {{.*}}InlinedD1Ev |
| Naomi Musgrave | e50cb9b | 2015-08-13 18:35:11 +0000 | [diff] [blame] | 24 | // CHECK: call void {{.*}}InlinedD2Ev |
| Naomi Musgrave | d3ec7c3 | 2015-07-15 22:57:10 +0000 | [diff] [blame] | 25 | // CHECK: ret void |
| 26 | |
| Naomi Musgrave | d3ec7c3 | 2015-07-15 22:57:10 +0000 | [diff] [blame] | 27 | struct Defaulted_Trivial { |
| 28 | ~Defaulted_Trivial() = default; |
| 29 | }; |
| Naomi Musgrave | b7b02ad | 2015-07-16 00:25:45 +0000 | [diff] [blame] | 30 | void create_def_trivial() { |
| Naomi Musgrave | d3ec7c3 | 2015-07-15 22:57:10 +0000 | [diff] [blame] | 31 | Defaulted_Trivial def_trivial; |
| 32 | } |
| 33 | // The compiler is explicitly signalled to handle object cleanup. |
| Naomi Musgrave | b7b02ad | 2015-07-16 00:25:45 +0000 | [diff] [blame] | 34 | // No complex member attributes. Compiler destroys inline, so |
| 35 | // no destructor defined. |
| 36 | // CHECK-LABEL: define {{.*}}create_def_trivial |
| 37 | // CHECK-NOT: call {{.*}}Defaulted_Trivial |
| Naomi Musgrave | b7b02ad | 2015-07-16 00:25:45 +0000 | [diff] [blame] | 38 | // CHECK: ret void |
| Naomi Musgrave | d3ec7c3 | 2015-07-15 22:57:10 +0000 | [diff] [blame] | 39 | |
| 40 | struct Defaulted_Non_Trivial { |
| 41 | Simple s; |
| 42 | ~Defaulted_Non_Trivial() = default; |
| 43 | }; |
| 44 | Defaulted_Non_Trivial def_non_trivial; |
| 45 | // Explicitly compiler-generated dtor poisons object. |
| 46 | // By including a Simple member in the struct, the compiler is |
| Naomi Musgrave | b7b02ad | 2015-07-16 00:25:45 +0000 | [diff] [blame] | 47 | // forced to generate a non-trivial destructor. |
| 48 | // CHECK-LABEL: define {{.*}}Defaulted_Non_TrivialD1Ev |
| Naomi Musgrave | e50cb9b | 2015-08-13 18:35:11 +0000 | [diff] [blame] | 49 | // CHECK: call void {{.*}}Defaulted_Non_TrivialD2 |
| Naomi Musgrave | b7b02ad | 2015-07-16 00:25:45 +0000 | [diff] [blame] | 50 | // CHECK: ret void |
| Naomi Musgrave | d3ec7c3 | 2015-07-15 22:57:10 +0000 | [diff] [blame] | 51 | |
| Naomi Musgrave | b7b02ad | 2015-07-16 00:25:45 +0000 | [diff] [blame] | 52 | |
| 53 | // Note: ordering is important. In the emitted bytecode, these |
| 54 | // second dtors defined after the first. Explicitly checked here |
| 55 | // to confirm that all invoked dtors have member poisoning |
| 56 | // instrumentation inserted. |
| 57 | // CHECK-LABEL: define {{.*}}SimpleD2Ev |
| 58 | // CHECK: call void @__sanitizer_dtor_callback |
| 59 | // CHECK-NOT: call void @__sanitizer_dtor_callback |
| 60 | // CHECK: ret void |
| 61 | |
| 62 | // CHECK-LABEL: define {{.*}}InlinedD2Ev |
| 63 | // CHECK: call void @__sanitizer_dtor_callback |
| 64 | // CHECK-NOT: call void @__sanitizer_dtor_callback |
| 65 | // CHECK: ret void |
| 66 | |
| 67 | // CHECK-LABEL: define {{.*}}Defaulted_Non_TrivialD2Ev |
| 68 | // CHECK: call void @__sanitizer_dtor_callback |
| 69 | // CHECK-NOT: call void @__sanitizer_dtor_callback |
| 70 | // CHECK: ret void |