1 | // RUN: %clangxx_cfi -o %t1 %s |
2 | // RUN: %expect_crash %run %t1 2>&1 | FileCheck --check-prefix=CFI %s |
3 | |
4 | // RUN: %clangxx_cfi -DB32 -o %t2 %s |
5 | // RUN: %expect_crash %run %t2 2>&1 | FileCheck --check-prefix=CFI %s |
6 | |
7 | // RUN: %clangxx_cfi -DB64 -o %t3 %s |
8 | // RUN: %expect_crash %run %t3 2>&1 | FileCheck --check-prefix=CFI %s |
9 | |
10 | // RUN: %clangxx_cfi -DBM -o %t4 %s |
11 | // RUN: %expect_crash %run %t4 2>&1 | FileCheck --check-prefix=CFI %s |
12 | |
13 | // RUN: %clangxx -o %t5 %s |
14 | // RUN: %run %t5 2>&1 | FileCheck --check-prefix=NCFI %s |
15 | |
16 | // RUN: %clangxx_cfi_diag -o %t6 %s |
17 | // RUN: %run %t6 2>&1 | FileCheck --check-prefix=CFI-DIAG %s |
18 | |
19 | // Tests that the CFI mechanism crashes the program when making a non-virtual |
20 | // call to an object of the wrong class, by casting a pointer to such an object |
21 | // and attempting to make a call through it. |
22 | |
23 | // REQUIRES: cxxabi |
24 | |
25 | #include <stdio.h> |
26 | #include "utils.h" |
27 | |
28 | struct A { |
29 | virtual void v(); |
30 | }; |
31 | |
32 | void A::v() {} |
33 | |
34 | struct B { |
35 | void f(); |
36 | virtual void g(); |
37 | }; |
38 | |
39 | void B::f() {} |
40 | void B::g() {} |
41 | |
42 | int main() { |
43 | create_derivers<B>(); |
44 | |
45 | A *a = new A; |
46 | break_optimization(arg: a); |
47 | |
48 | // CFI: 1 |
49 | // NCFI: 1 |
50 | fprintf(stderr, format: "1\n" ); |
51 | |
52 | // CFI-DIAG: runtime error: control flow integrity check for type 'B' failed during non-virtual call |
53 | // CFI-DIAG-NEXT: note: vtable is of type '{{(struct )?}}A' |
54 | ((B *)a)->f(); // UB here |
55 | |
56 | // CFI-NOT: {{^2$}} |
57 | // NCFI: {{^2$}} |
58 | fprintf(stderr, format: "2\n" ); |
59 | } |
60 | |