compiler-rt/test/cfi/cross-dso/simple-pass.cpp

   1 // RUN: %clangxx_cfi_dso -DSHARED_LIB %s -fPIC -shared -o %dynamiclib %ld_flags_rpath_so
   2 // RUN: %clangxx_cfi_dso -g %s -o %t %ld_flags_rpath_exe
   3 // RUN: %t 2>&1 | FileCheck --check-prefix=CFI %s
   4
   5 // RUN: %clangxx_cfi_dso -DB32 -DSHARED_LIB %s -fPIC -shared -o %dynamiclib %ld_flags_rpath_so
   6 // RUN: %clangxx_cfi_dso -DB32 %s -o %t %ld_flags_rpath_exe
   7 // RUN: %t 2>&1 | FileCheck --check-prefix=CFI %s
   8
   9 // RUN: %clangxx_cfi_dso -DB64 -DSHARED_LIB %s -fPIC -shared -o %dynamiclib %ld_flags_rpath_so
  10 // RUN: %clangxx_cfi_dso -DB64 %s -o %t %ld_flags_rpath_exe
  11 // RUN: %t 2>&1 | FileCheck --check-prefix=CFI %s
  12
  13 // RUN: %clangxx_cfi_dso -DBM -DSHARED_LIB %s -fPIC -shared -o %dynamiclib %ld_flags_rpath_so
  14 // RUN: %clangxx_cfi_dso -DBM %s -o %t %ld_flags_rpath_exe
  15 // RUN: %t 2>&1 | FileCheck --check-prefix=CFI %s
  16
  17 // RUN: %clangxx -DBM -DSHARED_LIB %s -fPIC -shared -o %dynamiclib %ld_flags_rpath_so
  18 // RUN: %clangxx -DBM %s -o %t %ld_flags_rpath_exe
  19 // RUN: %t 2>&1 | FileCheck --check-prefix=NCFI %s
  20 // RUN: %t x 2>&1 | FileCheck --check-prefix=NCFI %s
  21
  22 // Tests that the CFI mechanism crashes the program when making a virtual call
  23 // to an object of the wrong class but with a compatible vtable, by casting a
  24 // pointer to such an object and attempting to make a call through it.
  25
  26 // REQUIRES: cxxabi
  27
  28 #include <stdio.h>
  29 #include <string.h>
  30
  31 struct A {
  32   virtual void f();
  33 };
  34
  35 A *create_B();
  36
  37 #ifdef SHARED_LIB
  38
  39 #include "../utils.h"
  40 struct B : public A {
  41   virtual void f();
  42 };
  43 void B::f() {}
  44
  45 A *create_B() {
  46   create_derivers<B>();
  47   return new B();
  48 }
  49
  50 #else
  51
  52 void A::f() {}
  53
  54 int main(int argc, char *argv[]) {
  55   A *a = create_B();
  56
  57   // CFI: =1=
  58   // NCFI: =1=
  59   fprintf(stderr, "=1=\n");
  60   a->f(); // OK
  61   // CFI: =2=
  62   // NCFI: =2=
  63   fprintf(stderr, "=2=\n");
  64 }
  65 #endif