1 | // RUN: %clangxx_cfi -o %t1 %s |
2 | // RUN: %expect_crash %run %t1 2>&1 | FileCheck --check-prefix=CFI %s |
3 | // RUN: %expect_crash %run %t1 x 2>&1 | FileCheck --check-prefix=CFI %s |
4 | |
5 | // RUN: %clangxx_cfi -DB32 -o %t2 %s |
6 | // RUN: %expect_crash %run %t2 2>&1 | FileCheck --check-prefix=CFI %s |
7 | // RUN: %expect_crash %run %t2 x 2>&1 | FileCheck --check-prefix=CFI %s |
8 | |
9 | // RUN: %clangxx_cfi -DB64 -o %t3 %s |
10 | // RUN: %expect_crash %run %t3 2>&1 | FileCheck --check-prefix=CFI %s |
11 | // RUN: %expect_crash %run %t3 x 2>&1 | FileCheck --check-prefix=CFI %s |
12 | |
13 | // RUN: %clangxx_cfi -DBM -o %t4 %s |
14 | // RUN: %expect_crash %run %t4 2>&1 | FileCheck --check-prefix=CFI %s |
15 | // RUN: %expect_crash %run %t4 x 2>&1 | FileCheck --check-prefix=CFI %s |
16 | |
17 | // RUN: %clangxx -o %t5 %s |
18 | // RUN: %run %t5 2>&1 | FileCheck --check-prefix=NCFI %s |
19 | // RUN: %run %t5 x 2>&1 | FileCheck --check-prefix=NCFI %s |
20 | |
21 | // RUN: %clangxx_cfi_diag -o %t6 %s |
22 | // RUN: %run %t6 2>&1 | FileCheck --check-prefix=CFI-DIAG2 %s |
23 | // RUN: %run %t6 x 2>&1 | FileCheck --check-prefix=CFI-DIAG1 %s |
24 | |
25 | // Tests that the CFI mechanism is sensitive to multiple inheritance and only |
26 | // permits calls via virtual tables for the correct base class. |
27 | |
28 | // REQUIRES: cxxabi |
29 | |
30 | #include <stdio.h> |
31 | #include "utils.h" |
32 | |
33 | struct A { |
34 | virtual void f() = 0; |
35 | }; |
36 | |
37 | struct B { |
38 | virtual void g() = 0; |
39 | }; |
40 | |
41 | struct C : A, B { |
42 | virtual void f(), g(); |
43 | }; |
44 | |
45 | void C::f() {} |
46 | void C::g() {} |
47 | |
48 | int main(int argc, char **argv) { |
49 | create_derivers<A>(); |
50 | create_derivers<B>(); |
51 | |
52 | C *c = new C; |
53 | break_optimization(arg: c); |
54 | |
55 | // CFI: 1 |
56 | // NCFI: 1 |
57 | fprintf(stderr, format: "1\n" ); |
58 | |
59 | if (argc > 1) { |
60 | A *a = c; |
61 | // CFI-DIAG1: runtime error: control flow integrity check for type 'B' failed during cast to unrelated type |
62 | // CFI-DIAG1-NEXT: note: vtable is of type '{{(struct )?}}C' |
63 | ((B *)a)->g(); // UB here |
64 | } else { |
65 | // CFI-DIAG2: runtime error: control flow integrity check for type 'A' failed during cast to unrelated type |
66 | // CFI-DIAG2-NEXT: note: vtable is of type '{{(struct )?}}C' |
67 | B *b = c; |
68 | ((A *)b)->f(); // UB here |
69 | } |
70 | |
71 | // CFI-NOT: {{^2$}} |
72 | // NCFI: {{^2$}} |
73 | fprintf(stderr, format: "2\n" ); |
74 | } |
75 | |