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