compiler-rt/test/cfi/base-derived-destructor.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 // Tests that the CFI mechanism crashes the program when making a
  56 // base-to-derived cast from a destructor of the base class,
  57 // where both types have virtual tables.
  58
  59 // REQUIRES: cxxabi
  60
  61 #include <stdio.h>
  62 #include "utils.h"
  63
  64 template<typename T>
  65 class A {
  66  public:
  67   T* context() { return static_cast<T*>(this); }
  68
  69   virtual ~A() {
  70     break_optimization(context());
  71   }
  72 };
  73
  74 class B : public A<B> {
  75  public:
  76   virtual ~B() { }
  77 };
  78
  79 int main() {
  80   // CFI: 1
  81   // NCFI: 1
  82   fprintf(stderr, "1\n");
  83
  84   // CFI-DIAG: runtime error: control flow integrity check for type 'B' failed during base-to-derived cast
  85   // CFI-DIAG-NEXT: note: vtable is of type '{{(class )?}}A<{{(class )?}}B>'
  86   B* b = new B;
  87   break_optimization(b);
  88   delete b; // UB here
  89
  90   // CFI-NOT: {{^2$}}
  91   // NCFI: {{^2$}}
  92   fprintf(stderr, "2\n");
  93 }