You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
89 lines
4.0 KiB
89 lines
4.0 KiB
4 months ago
|
// RUN: %clang_cc1 -std=c++11 -triple %itanium_abi_triple -emit-llvm -fsanitize=null,vptr %s -o - | FileCheck %s
|
||
|
|
|
||
|
|
struct Base1 {
|
||
|
|
virtual void f1() {}
|
||
|
|
};
|
||
|
|
|
||
|
|
struct Base2 {
|
||
|
|
virtual void f1() {}
|
||
|
|
};
|
||
|
|
|
||
|
|
struct Derived1 final : Base1 {
|
||
|
|
void f1() override {}
|
||
|
|
};
|
||
|
|
|
||
|
|
struct Derived2 final : Base1, Base2 {
|
||
|
|
void f1() override {}
|
||
|
|
};
|
||
|
|
|
||
|
|
struct Derived3 : Base1 {
|
||
|
|
void f1() override /* nofinal */ {}
|
||
|
|
};
|
||
|
|
|
||
|
|
struct Derived4 final : Base1 {
|
||
|
|
void f1() override final {}
|
||
|
|
};
|
||
|
|
|
||
|
|
// CHECK: [[UBSAN_TI_DERIVED1_1:@[0-9]+]] = private unnamed_addr global {{.*}} i8* bitcast {{.*}} @_ZTI8Derived1 to i8*
|
||
|
|
// CHECK: [[UBSAN_TI_DERIVED2_1:@[0-9]+]] = private unnamed_addr global {{.*}} i8* bitcast {{.*}} @_ZTI8Derived2 to i8*
|
||
|
|
// CHECK: [[UBSAN_TI_DERIVED2_2:@[0-9]+]] = private unnamed_addr global {{.*}} i8* bitcast {{.*}} @_ZTI8Derived2 to i8*
|
||
|
|
// CHECK: [[UBSAN_TI_DERIVED3:@[0-9]+]] = private unnamed_addr global {{.*}} i8* bitcast {{.*}} @_ZTI8Derived3 to i8*
|
||
|
|
// CHECK: [[UBSAN_TI_BASE1:@[0-9]+]] = private unnamed_addr global {{.*}} i8* bitcast {{.*}} @_ZTI5Base1 to i8*
|
||
|
|
// CHECK: [[UBSAN_TI_DERIVED4_1:@[0-9]+]] = private unnamed_addr global {{.*}} i8* bitcast {{.*}} @_ZTI8Derived4 to i8*
|
||
|
|
// CHECK: [[UBSAN_TI_DERIVED4_2:@[0-9]+]] = private unnamed_addr global {{.*}} i8* bitcast {{.*}} @_ZTI8Derived4 to i8*
|
||
|
|
|
||
|
|
// CHECK-LABEL: define {{(dso_local )?}}void @_Z2t1v
|
||
|
|
void t1() {
|
||
|
|
Derived1 d1;
|
||
|
|
static_cast<Base1 *>(&d1)->f1(); //< Devirt Base1::f1 to Derived1::f1.
|
||
|
|
// CHECK: %[[D1:[0-9]+]] = ptrtoint %struct.Derived1* %d1 to i{{[0-9]+}}, !nosanitize
|
||
|
|
// CHECK-NEXT: call void @__ubsan_handle_dynamic_type_cache{{[_a-z]*}}({{.*}} [[UBSAN_TI_DERIVED1_1]] {{.*}}, i{{[0-9]+}} %[[D1]]
|
||
|
|
}
|
||
|
|
|
||
|
|
// CHECK-LABEL: define {{(dso_local )?}}void @_Z2t2v
|
||
|
|
void t2() {
|
||
|
|
Derived2 d2;
|
||
|
|
static_cast<Base1 *>(&d2)->f1(); //< Devirt Base1::f1 to Derived2::f1.
|
||
|
|
// CHECK: %[[D2_1:[0-9]+]] = ptrtoint %struct.Derived2* %d2 to i{{[0-9]+}}, !nosanitize
|
||
|
|
// CHECK-NEXT: call void @__ubsan_handle_dynamic_type_cache{{[_a-z]*}}({{.*}} [[UBSAN_TI_DERIVED2_1]] {{.*}}, i{{[0-9]+}} %[[D2_1]]
|
||
|
|
}
|
||
|
|
|
||
|
|
// CHECK-LABEL: define {{(dso_local )?}}void @_Z2t3v
|
||
|
|
void t3() {
|
||
|
|
Derived2 d2;
|
||
|
|
static_cast<Base2 *>(&d2)->f1(); //< Devirt Base2::f1 to Derived2::f1.
|
||
|
|
// CHECK: %[[D2_2:[0-9]+]] = ptrtoint %struct.Derived2* %d2 to i{{[0-9]+}}, !nosanitize
|
||
|
|
// CHECK-NEXT: call void @__ubsan_handle_dynamic_type_cache{{[_a-z]*}}({{.*}} [[UBSAN_TI_DERIVED2_2]] {{.*}}, i{{[0-9]+}} %[[D2_2]]
|
||
|
|
}
|
||
|
|
|
||
|
|
// CHECK-LABEL: define {{(dso_local )?}}void @_Z2t4v
|
||
|
|
void t4() {
|
||
|
|
Base1 p;
|
||
|
|
Derived3 *badp = static_cast<Derived3 *>(&p); //< Check that &p isa Derived3.
|
||
|
|
// CHECK: %[[P1:[0-9]+]] = ptrtoint %struct.Derived3* {{%[0-9]+}} to i{{[0-9]+}}, !nosanitize
|
||
|
|
// CHECK-NEXT: call void @__ubsan_handle_dynamic_type_cache{{[_a-z]*}}({{.*}} [[UBSAN_TI_DERIVED3]] {{.*}}, i{{[0-9]+}} %[[P1]]
|
||
|
|
|
||
|
|
static_cast<Base1 *>(badp)->f1(); //< No devirt, test 'badp isa Base1'.
|
||
|
|
// We were able to skip the null check on the first type check because 'p'
|
||
|
|
// is backed by an alloca. We can't skip the second null check because 'badp'
|
||
|
|
// is a (bitcast (load ...)).
|
||
|
|
// CHECK: call void @__ubsan_handle_type_mismatch
|
||
|
|
//
|
||
|
|
// CHECK: %[[BADP1:[0-9]+]] = ptrtoint %struct.Base1* {{%[0-9]+}} to i{{[0-9]+}}, !nosanitize
|
||
|
|
// CHECK-NEXT: call void @__ubsan_handle_dynamic_type_cache{{[_a-z]*}}({{.*}} [[UBSAN_TI_BASE1]] {{.*}}, i{{[0-9]+}} %[[BADP1]]
|
||
|
|
}
|
||
|
|
|
||
|
|
// CHECK-LABEL: define {{(dso_local )?}}void @_Z2t5v
|
||
|
|
void t5() {
|
||
|
|
Base1 p;
|
||
|
|
Derived4 *badp = static_cast<Derived4 *>(&p); //< Check that &p isa Derived4.
|
||
|
|
// CHECK: %[[P1:[0-9]+]] = ptrtoint %struct.Derived4* {{%[0-9]+}} to i{{[0-9]+}}, !nosanitize
|
||
|
|
// CHECK-NEXT: call void @__ubsan_handle_dynamic_type_cache{{[_a-z]*}}({{.*}} [[UBSAN_TI_DERIVED4_1]] {{.*}}, i{{[0-9]+}} %[[P1]]
|
||
|
|
|
||
|
|
static_cast<Base1 *>(badp)->f1(); //< Devirt Base1::f1 to Derived4::f1.
|
||
|
|
// CHECK: call void @__ubsan_handle_type_mismatch
|
||
|
|
//
|
||
|
|
// CHECK: %[[BADP1:[0-9]+]] = ptrtoint %struct.Derived4* {{%[0-9]+}} to i{{[0-9]+}}, !nosanitize
|
||
|
|
// CHECK-NEXT: call void @__ubsan_handle_dynamic_type_cache{{[_a-z]*}}({{.*}} [[UBSAN_TI_DERIVED4_2]] {{.*}}, i{{[0-9]+}} %[[BADP1]]
|
||
|
|
}
|