compiler-rt/test/cfi/simple-fail.cpp

   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_cfi -O1 -o %t5 %s
  14 // RUN: %expect_crash %run %t5 2>&1 | FileCheck --check-prefix=CFI %s
  15
  16 // RUN: %clangxx_cfi -O1 -DB32 -o %t6 %s
  17 // RUN: %expect_crash %run %t6 2>&1 | FileCheck --check-prefix=CFI %s
  18
  19 // RUN: %clangxx_cfi -O1 -DB64 -o %t7 %s
  20 // RUN: %expect_crash %run %t7 2>&1 | FileCheck --check-prefix=CFI %s
  21
  22 // RUN: %clangxx_cfi -O1 -DBM -o %t8 %s
  23 // RUN: %expect_crash %run %t8 2>&1 | FileCheck --check-prefix=CFI %s
  24
  25 // RUN: %clangxx_cfi -O2 -o %t9 %s
  26 // RUN: %expect_crash %run %t9 2>&1 | FileCheck --check-prefix=CFI %s
  27
  28 // RUN: %clangxx_cfi -O2 -DB32 -o %t10 %s
  29 // RUN: %expect_crash %run %t10 2>&1 | FileCheck --check-prefix=CFI %s
  30
  31 // RUN: %clangxx_cfi -O2 -DB64 -o %t11 %s
  32 // RUN: %expect_crash %run %t11 2>&1 | FileCheck --check-prefix=CFI %s
  33
  34 // RUN: %clangxx_cfi -O2 -DBM -o %t12 %s
  35 // RUN: %expect_crash %run %t12 2>&1 | FileCheck --check-prefix=CFI %s
  36
  37 // RUN: %clangxx_cfi -O3 -o %t13 %s
  38 // RUN: %expect_crash %run %t13 2>&1 | FileCheck --check-prefix=CFI %s
  39
  40 // RUN: %clangxx_cfi -O3 -DB32 -o %t14 %s
  41 // RUN: %expect_crash %run %t14 2>&1 | FileCheck --check-prefix=CFI %s
  42
  43 // RUN: %clangxx_cfi -O3 -DB64 -o %t15 %s
  44 // RUN: %expect_crash %run %t15 2>&1 | FileCheck --check-prefix=CFI %s
  45
  46 // RUN: %clangxx_cfi -O3 -DBM -o %t16 %s
  47 // RUN: %expect_crash %run %t16 2>&1 | FileCheck --check-prefix=CFI %s
  48
  49 // RUN: %clangxx_cfi_diag -o %t17 %s
  50 // RUN: %run %t17 2>&1 | FileCheck --check-prefix=CFI-DIAG %s
  51
  52 // RUN: %clangxx -o %t18 %s
  53 // RUN: %run %t18 2>&1 | FileCheck --check-prefix=NCFI %s
  54
  55 // RUN: %clangxx_cfi -DCHECK_NO_SANITIZE_CFI -o %t19 %s
  56 // RUN: %run %t19 2>&1 | FileCheck --check-prefix=NCFI %s
  57
  58 // Tests that the CFI mechanism crashes the program when making a virtual call
  59 // to an object of the wrong class but with a compatible vtable, by casting a
  60 // pointer to such an object and attempting to make a call through it.
  61
  62 // REQUIRES: cxxabi
  63
  64 #include <stdio.h>
  65 #include "utils.h"
  66
  67 struct A {
  68   virtual void f();
  69 };
  70
  71 void A::f() {}
  72
  73 struct B {
  74   virtual void f();
  75 };
  76
  77 void B::f() {}
  78
  79 #if defined(CHECK_NO_SANITIZE_CFI)
  80 __attribute__((no_sanitize("cfi")))
  81 #endif
  82 int main() {
  83   create_derivers<B>();
  84
  85   A *a = new A;
  86   break_optimization(a);
  87
  88   // CFI: 1
  89   // NCFI: 1
  90   fprintf(stderr, "1\n");
  91
  92   // CFI-DIAG: runtime error: control flow integrity check for type 'B' failed during cast to unrelated type
  93   // CFI-DIAG-NEXT: note: vtable is of type '{{(struct )?}}A'
  94   // CFI-DIAG: runtime error: control flow integrity check for type 'B' failed during virtual call
  95   // CFI-DIAG-NEXT: note: vtable is of type '{{(struct )?}}A'
  96   ((B *)a)->f(); // UB here
  97
  98   // CFI-NOT: {{^2$}}
  99   // NCFI: {{^2$}}
 100   fprintf(stderr, "2\n");
 101 }