| // 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 |
| |
| // Sanitizing dtor is emitted in dtor for every class, and only |
| // poisons once. |
| |
| struct Simple { |
| int x; |
| ~Simple() {} |
| }; |
| Simple s; |
| // Simple internal member is poisoned by compiler-generated dtor |
| // CHECK-LABEL: define {{.*}}SimpleD1Ev |
| // CHECK: call void {{.*}}SimpleD2Ev |
| // CHECK: ret void |
| |
| struct Inlined { |
| int y; |
| inline ~Inlined() {} |
| }; |
| Inlined i; |
| // Simple internal member is poisoned by compiler-generated dtor |
| // CHECK-LABEL: define {{.*}}InlinedD1Ev |
| // CHECK: call void {{.*}}InlinedD2Ev |
| // CHECK: ret void |
| |
| struct Defaulted_Trivial { |
| ~Defaulted_Trivial() = default; |
| }; |
| void create_def_trivial() { |
| Defaulted_Trivial def_trivial; |
| } |
| // The compiler is explicitly signalled to handle object cleanup. |
| // No complex member attributes. Compiler destroys inline, so |
| // no destructor defined. |
| // CHECK-LABEL: define {{.*}}create_def_trivial |
| // CHECK-NOT: call {{.*}}Defaulted_Trivial |
| // CHECK: ret void |
| |
| struct Defaulted_Non_Trivial { |
| Simple s; |
| ~Defaulted_Non_Trivial() = default; |
| }; |
| Defaulted_Non_Trivial def_non_trivial; |
| // Explicitly compiler-generated dtor poisons object. |
| // By including a Simple member in the struct, the compiler is |
| // forced to generate a non-trivial destructor. |
| // CHECK-LABEL: define {{.*}}Defaulted_Non_TrivialD1Ev |
| // CHECK: call void {{.*}}Defaulted_Non_TrivialD2 |
| // CHECK: ret void |
| |
| |
| // Note: ordering is important. In the emitted bytecode, these |
| // second dtors defined after the first. Explicitly checked here |
| // to confirm that all invoked dtors have member poisoning |
| // instrumentation inserted. |
| // CHECK-LABEL: define {{.*}}SimpleD2Ev |
| // CHECK-NOT: store i{{[0-9]+}} 0, {{.*}}@__msan_param_tls |
| // CHECK: call void @__sanitizer_dtor_callback |
| // CHECK-NOT: call void @__sanitizer_dtor_callback |
| // CHECK: ret void |
| |
| // CHECK-LABEL: define {{.*}}InlinedD2Ev |
| // CHECK-NOT: store i{{[0-9]+}} 0, {{.*}}@__msan_param_tls |
| // CHECK: call void @__sanitizer_dtor_callback |
| // CHECK-NOT: call void @__sanitizer_dtor_callback |
| // CHECK: ret void |
| |
| // CHECK-LABEL: define {{.*}}Defaulted_Non_TrivialD2Ev |
| // CHECK-NOT: store i{{[0-9]+}} 0, {{.*}}@__msan_param_tls |
| // CHECK: call void @__sanitizer_dtor_callback |
| // CHECK-NOT: call void @__sanitizer_dtor_callback |
| // CHECK: ret void |
