| // RUN: %clangxx_cfi -o %t %s |
| // RUN: not --crash %t 2>&1 | FileCheck --check-prefix=CFI %s |
| // RUN: not --crash %t x 2>&1 | FileCheck --check-prefix=CFI %s |
| |
| // RUN: %clangxx_cfi -DB32 -o %t %s |
| // RUN: not --crash %t 2>&1 | FileCheck --check-prefix=CFI %s |
| // RUN: not --crash %t x 2>&1 | FileCheck --check-prefix=CFI %s |
| |
| // RUN: %clangxx_cfi -DB64 -o %t %s |
| // RUN: not --crash %t 2>&1 | FileCheck --check-prefix=CFI %s |
| // RUN: not --crash %t x 2>&1 | FileCheck --check-prefix=CFI %s |
| |
| // RUN: %clangxx_cfi -DBM -o %t %s |
| // RUN: not --crash %t 2>&1 | FileCheck --check-prefix=CFI %s |
| // RUN: not --crash %t x 2>&1 | FileCheck --check-prefix=CFI %s |
| |
| // RUN: %clangxx -o %t %s |
| // RUN: %t 2>&1 | FileCheck --check-prefix=NCFI %s |
| // RUN: %t x 2>&1 | FileCheck --check-prefix=NCFI %s |
| |
| // Tests that the CFI mechanism is sensitive to multiple inheritance and only |
| // permits calls via virtual tables for the correct base class. |
| |
| #include <stdio.h> |
| #include "utils.h" |
| |
| struct A { |
| virtual void f() = 0; |
| }; |
| |
| struct B { |
| virtual void g() = 0; |
| }; |
| |
| struct C : A, B { |
| virtual void f(), g(); |
| }; |
| |
| void C::f() {} |
| void C::g() {} |
| |
| int main(int argc, char **argv) { |
| #ifdef B32 |
| break_optimization(new Deriver<A, 0>); |
| break_optimization(new Deriver<B, 0>); |
| #endif |
| |
| #ifdef B64 |
| break_optimization(new Deriver<A, 0>); |
| break_optimization(new Deriver<A, 1>); |
| break_optimization(new Deriver<B, 0>); |
| break_optimization(new Deriver<B, 1>); |
| #endif |
| |
| #ifdef BM |
| break_optimization(new Deriver<A, 0>); |
| break_optimization(new Deriver<A, 1>); |
| break_optimization(new Deriver<A, 2>); |
| break_optimization(new Deriver<B, 0>); |
| break_optimization(new Deriver<B, 1>); |
| break_optimization(new Deriver<B, 2>); |
| #endif |
| |
| C *c = new C; |
| break_optimization(c); |
| |
| // CFI: 1 |
| // NCFI: 1 |
| fprintf(stderr, "1\n"); |
| |
| if (argc > 1) { |
| A *a = c; |
| ((B *)a)->g(); // UB here |
| } else { |
| B *b = c; |
| ((A *)b)->f(); // UB here |
| } |
| |
| // CFI-NOT: 2 |
| // NCFI: 2 |
| fprintf(stderr, "2\n"); |
| } |