forked from OSchip/llvm-project
55 lines
2.6 KiB
C++
55 lines
2.6 KiB
C++
// RUN: %clang_cc1 -std=c++11 -triple x86_64-unknown-linux -emit-llvm -fsanitize=null %s -o - | FileCheck %s --check-prefix=CHECK-NULL --check-prefix=ITANIUM
|
|
// RUN: %clang_cc1 -std=c++11 -triple x86_64-windows -emit-llvm -fsanitize=null %s -o - | FileCheck %s --check-prefix=CHECK-NULL --check-prefix=MSABI
|
|
// RUN: %clang_cc1 -std=c++11 -triple x86_64-unknown-linux -emit-llvm -fsanitize=null,vptr %s -o - | FileCheck %s --check-prefix=CHECK-VPTR --check-prefix=ITANIUM
|
|
// RUN: %clang_cc1 -std=c++11 -triple x86_64-windows -emit-llvm -fsanitize=null,vptr %s -o - | FileCheck %s --check-prefix=CHECK-VPTR --check-prefix=MSABI --check-prefix=CHECK-VPTR-MS
|
|
struct T {
|
|
virtual ~T() {}
|
|
virtual int v() { return 1; }
|
|
};
|
|
|
|
struct U : T {
|
|
~U();
|
|
virtual int v() { return 2; }
|
|
};
|
|
|
|
U::~U() {}
|
|
|
|
// CHECK-VPTR-MS: @__ubsan_vptr_type_cache = external dso_local
|
|
|
|
// ITANIUM: define{{.*}} i32 @_Z5get_vP1T
|
|
// MSABI: define dso_local i32 @"?get_v
|
|
int get_v(T* t) {
|
|
// First, we check that vtable is not loaded before a type check.
|
|
// CHECK-NULL-NOT: load {{.*}} (%struct.T*{{.*}})**, {{.*}} (%struct.T*{{.*}})***
|
|
// CHECK-NULL: [[UBSAN_CMP_RES:%[0-9]+]] = icmp ne %struct.T* %{{[_a-z0-9]+}}, null
|
|
// CHECK-NULL-NEXT: br i1 [[UBSAN_CMP_RES]], label %{{.*}}, label %{{.*}}
|
|
// CHECK-NULL: call void @__ubsan_handle_type_mismatch_v1_abort
|
|
// Second, we check that vtable is actually loaded once the type check is done.
|
|
// CHECK-NULL: load {{.*}} (%struct.T*{{.*}})**, {{.*}} (%struct.T*{{.*}})***
|
|
return t->v();
|
|
}
|
|
|
|
// ITANIUM: define{{.*}} void @_Z9delete_itP1T
|
|
// MSABI: define dso_local void @"?delete_it
|
|
void delete_it(T *t) {
|
|
// First, we check that vtable is not loaded before a type check.
|
|
// CHECK-VPTR-NOT: load {{.*}} (%struct.T*{{.*}})**, {{.*}} (%struct.T*{{.*}})***
|
|
// CHECK-VPTR: br i1 {{.*}} label %{{.*}}
|
|
// CHECK-VPTR: call void @__ubsan_handle_dynamic_type_cache_miss_abort
|
|
// Second, we check that vtable is actually loaded once the type check is done.
|
|
// CHECK-VPTR: load {{.*}} (%struct.T*{{.*}})**, {{.*}} (%struct.T*{{.*}})***
|
|
delete t;
|
|
}
|
|
|
|
// ITANIUM: define{{.*}} %struct.U* @_Z7dyncastP1T
|
|
// MSABI: define dso_local %struct.U* @"?dyncast
|
|
U* dyncast(T *t) {
|
|
// First, we check that dynamic_cast is not called before a type check.
|
|
// CHECK-VPTR-NOT: call i8* @__{{dynamic_cast|RTDynamicCast}}
|
|
// CHECK-VPTR: br i1 {{.*}} label %{{.*}}
|
|
// CHECK-VPTR: call void @__ubsan_handle_dynamic_type_cache_miss_abort
|
|
// Second, we check that dynamic_cast is actually called once the type check is done.
|
|
// CHECK-VPTR: call i8* @__{{dynamic_cast|RTDynamicCast}}
|
|
return dynamic_cast<U*>(t);
|
|
}
|