compiler-rt/test/cfi/multiple-inheritance2.cpp

   1 // Test that virtual functions of the derived class can be called through
   2 // pointers of both base classes without CFI errors.
   3 // Related to Bugzilla 43390.
   4
   5 // RUN: %clangxx_cfi -o %t1 %s
   6 // RUN: %run %t1 2>&1 | FileCheck --check-prefix=CFI %s
   7
   8 // CFI: In f1
   9 // CFI: In f2
  10 // CFI-NOT: control flow integrity check
  11
  12 // REQUIRES: cxxabi
  13
  14 #include <stdio.h>
  15
  16 class A1 {
  17 public:
  18     virtual void f1() = 0;
  19 };
  20
  21 class A2 {
  22 public:
  23     virtual void f2() = 0;
  24 };
  25
  26
  27 class B : public A1, public A2 {
  28 public:
  29     void f2() final { fprintf(stderr, "In f2\n"); }
  30     void f1() final { fprintf(stderr, "In f1\n"); }
  31 };
  32
  33 int main() {
  34     B b;
  35
  36     static_cast<A1*>(&b)->f1();
  37     static_cast<A2*>(&b)->f2();
  38 }