1 // RUN: %clangxx_cfi -o %t1 %s
2 // RUN: %expect_crash %t1 2>&1 | FileCheck --check-prefix=CFI %s
3
4 // RUN: %clangxx_cfi -DB32 -o %t2 %s
5 // RUN: %expect_crash %t2 2>&1 | FileCheck --check-prefix=CFI %s
6
7 // RUN: %clangxx_cfi -DB64 -o %t3 %s
8 // RUN: %expect_crash %t3 2>&1 | FileCheck --check-prefix=CFI %s
9
10 // RUN: %clangxx_cfi -DBM -o %t4 %s
11 // RUN: %expect_crash %t4 2>&1 | FileCheck --check-prefix=CFI %s
12
13 // RUN: %clangxx_cfi -O1 -o %t5 %s
14 // RUN: %expect_crash %t5 2>&1 | FileCheck --check-prefix=CFI %s
15
16 // RUN: %clangxx_cfi -O1 -DB32 -o %t6 %s
17 // RUN: %expect_crash %t6 2>&1 | FileCheck --check-prefix=CFI %s
18
19 // RUN: %clangxx_cfi -O1 -DB64 -o %t7 %s
20 // RUN: %expect_crash %t7 2>&1 | FileCheck --check-prefix=CFI %s
21
22 // RUN: %clangxx_cfi -O1 -DBM -o %t8 %s
23 // RUN: %expect_crash %t8 2>&1 | FileCheck --check-prefix=CFI %s
24
25 // RUN: %clangxx_cfi -O2 -o %t9 %s
26 // RUN: %expect_crash %t9 2>&1 | FileCheck --check-prefix=CFI %s
27
28 // RUN: %clangxx_cfi -O2 -DB32 -o %t10 %s
29 // RUN: %expect_crash %t10 2>&1 | FileCheck --check-prefix=CFI %s
30
31 // RUN: %clangxx_cfi -O2 -DB64 -o %t11 %s
32 // RUN: %expect_crash %t11 2>&1 | FileCheck --check-prefix=CFI %s
33
34 // RUN: %clangxx_cfi -O2 -DBM -o %t12 %s
35 // RUN: %expect_crash %t12 2>&1 | FileCheck --check-prefix=CFI %s
36
37 // RUN: %clangxx_cfi -O3 -o %t13 %s
38 // RUN: %expect_crash %t13 2>&1 | FileCheck --check-prefix=CFI %s
39
40 // RUN: %clangxx_cfi -O3 -DB32 -o %t14 %s
41 // RUN: %expect_crash %t14 2>&1 | FileCheck --check-prefix=CFI %s
42
43 // RUN: %clangxx_cfi -O3 -DB64 -o %t15 %s
44 // RUN: %expect_crash %t15 2>&1 | FileCheck --check-prefix=CFI %s
45
46 // RUN: %clangxx_cfi -O3 -DBM -o %t16 %s
47 // RUN: %expect_crash %t16 2>&1 | FileCheck --check-prefix=CFI %s
48
49 // RUN: %clangxx_cfi_diag -o %t17 %s
50 // RUN: %t17 2>&1 | FileCheck --check-prefix=CFI-DIAG %s
51
52 // RUN: %clangxx -o %t18 %s
53 // RUN: %t18 2>&1 | FileCheck --check-prefix=NCFI %s
54
55 // Tests that the CFI mechanism crashes the program when making a virtual call
56 // to an object of the wrong class but with a compatible vtable, by casting a
57 // pointer to such an object and attempting to make a call through it.
58
59 // REQUIRES: cxxabi
60
61 #include <stdio.h>
62 #include "utils.h"
63
64 struct A {
65 virtual void f();
66 };
67
f()68 void A::f() {}
69
70 struct B {
71 virtual void f();
72 };
73
f()74 void B::f() {}
75
main()76 int main() {
77 create_derivers<B>();
78
79 A *a = new A;
80 break_optimization(a);
81
82 // CFI: 1
83 // NCFI: 1
84 fprintf(stderr, "1\n");
85
86 // CFI-DIAG: runtime error: control flow integrity check for type 'B' failed during cast to unrelated type
87 // CFI-DIAG-NEXT: note: vtable is of type '{{(struct )?}}A'
88 // CFI-DIAG: runtime error: control flow integrity check for type 'B' failed during virtual call
89 // CFI-DIAG-NEXT: note: vtable is of type '{{(struct )?}}A'
90 ((B *)a)->f(); // UB here
91
92 // CFI-NOT: {{^2$}}
93 // NCFI: {{^2$}}
94 fprintf(stderr, "2\n");
95 }
96