Index: test/CodeGenCXX/sanitize-dtor-callback.cpp =================================================================== --- test/CodeGenCXX/sanitize-dtor-callback.cpp +++ test/CodeGenCXX/sanitize-dtor-callback.cpp @@ -1,17 +1,69 @@ // Test -fsanitize-memory-use-after-dtor -// RUN: %clang_cc1 -fsanitize=memory -fsanitize-memory-use-after-dtor -triple=x86_64-pc-linux -emit-llvm -o - %s | FileCheck %s -// RUN: %clang_cc1 -fsanitize=memory -triple=x86_64-pc-linux -emit-llvm -o - %s | FileCheck %s -check-prefix=NO_DTOR_CHECK +// RUN: %clang_cc1 -fsanitize=memory -fsanitize-memory-use-after-dtor -std=c++11 -triple=x86_64-pc-linux -emit-llvm -o - %s | FileCheck %s struct Simple { ~Simple() {} }; Simple s; // Simple internal member is poisoned by compiler-generated dtor -// CHECK-LABEL: @_ZN6SimpleD2Ev +// CHECK-LABEL: define {{.*}}SimpleD1Ev // CHECK: call void @__sanitizer_dtor_callback +// CHECK-NOT: call void @__sanitizer_dtor_callback // CHECK: ret void -// Compiling without the flag does not generate member-poisoning dtor -// NO_DTOR_CHECK-LABEL: @_ZN6SimpleD2Ev -// NO_DTOR_CHECK-NOT: call void @sanitizer_dtor_callback -// NO_DTOR_CHECK: ret void +struct Inlined { + inline ~Inlined() {} +}; +Inlined i; +// Simple internal member is poisoned by compiler-generated dtor +// CHECK-LABEL: define {{.*}}InlinedD1Ev +// CHECK: call void @__sanitizer_dtor_callback +// CHECK-NOT: call void @__sanitizer_dtor_callback +// 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-NOT: call void @__sanitizer_dtor_callback +// 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 @__sanitizer_dtor_callback +// CHECK-NOT: call void @__sanitizer_dtor_callback +// 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: call void @__sanitizer_dtor_callback +// CHECK-NOT: call void @__sanitizer_dtor_callback +// CHECK: ret void + +// CHECK-LABEL: define {{.*}}InlinedD2Ev +// CHECK: call void @__sanitizer_dtor_callback +// CHECK-NOT: call void @__sanitizer_dtor_callback +// CHECK: ret void + +// CHECK-LABEL: define {{.*}}Defaulted_Non_TrivialD2Ev +// CHECK: call void @__sanitizer_dtor_callback +// CHECK-NOT: call void @__sanitizer_dtor_callback +// CHECK: ret void