1 // RUN: %clang_cc1 -triple x86_64-unknown-linux -fsanitize=cfi-vcall -emit-llvm -o - %s | FileCheck %s
2
3 struct A {
4 A();
5 virtual void f();
6 };
7
8 struct B : virtual A {
9 B();
10 };
11
12 struct C : virtual A {
13 C();
14 };
15
16 namespace {
17
18 struct D : B, C {
19 D();
20 virtual void f();
21 };
22
23 }
24
A()25 A::A() {}
B()26 B::B() {}
C()27 C::C() {}
D()28 D::D() {}
29
f()30 void A::f() {
31 }
32
f()33 void D::f() {
34 }
35
36 // CHECK: define void @_Z2afP1A
af(A * a)37 void af(A *a) {
38 // CHECK: [[P:%[^ ]*]] = call i1 @llvm.bitset.test(i8* {{%[^ ]*}}, metadata !"1A")
39 // CHECK-NEXT: br i1 [[P]], label %[[CONTBB:[^ ]*]], label %[[TRAPBB:[^ ]*]]
40
41 // CHECK: [[TRAPBB]]
42 // CHECK-NEXT: call void @llvm.trap()
43 // CHECK-NEXT: unreachable
44
45 // CHECK: [[CONTBB]]
46 // CHECK: call void %
47 a->f();
48 }
49
50 // CHECK: define internal void @_Z2dfPN12_GLOBAL__N_11DE
df(D * d)51 void df(D *d) {
52 // CHECK: {{%[^ ]*}} = call i1 @llvm.bitset.test(i8* {{%[^ ]*}}, metadata !"[{{.*}}cfi-vcall.cpp]N12_GLOBAL__N_11DE")
53 d->f();
54 }
55
56 D d;
57
foo()58 void foo() {
59 df(&d);
60 }
61
62 // CHECK-DAG: !{!"1A", [3 x i8*]* @_ZTV1A, i64 16}
63 // CHECK-DAG: !{!"1A", [5 x i8*]* @_ZTCN12_GLOBAL__N_11DE0_1B, i64 32}
64 // CHECK-DAG: !{!"1B", [5 x i8*]* @_ZTCN12_GLOBAL__N_11DE0_1B, i64 32}
65 // CHECK-DAG: !{!"1A", [9 x i8*]* @_ZTCN12_GLOBAL__N_11DE8_1C, i64 64}
66 // CHECK-DAG: !{!"1C", [9 x i8*]* @_ZTCN12_GLOBAL__N_11DE8_1C, i64 32}
67 // CHECK-DAG: !{!"1A", [10 x i8*]* @_ZTVN12_GLOBAL__N_11DE, i64 32}
68 // CHECK-DAG: !{!"1B", [10 x i8*]* @_ZTVN12_GLOBAL__N_11DE, i64 32}
69 // CHECK-DAG: !{!"1C", [10 x i8*]* @_ZTVN12_GLOBAL__N_11DE, i64 72}
70 // CHECK-DAG: !{!"[{{.*}}cfi-vcall.cpp]N12_GLOBAL__N_11DE", [10 x i8*]* @_ZTVN12_GLOBAL__N_11DE, i64 32}
71 // CHECK-DAG: !{!"1A", [5 x i8*]* @_ZTV1B, i64 32}
72 // CHECK-DAG: !{!"1B", [5 x i8*]* @_ZTV1B, i64 32}
73 // CHECK-DAG: !{!"1A", [5 x i8*]* @_ZTV1C, i64 32}
74 // CHECK-DAG: !{!"1C", [5 x i8*]* @_ZTV1C, i64 32}
75