clang/test/CodeGenCXX/cfi-ms-vbase-derived-cast.cpp

   1 // RUN: %clang_cc1 -flto -flto-unit -emit-llvm -o - -triple=x86_64-pc-win32 %s -fsanitize=cfi-derived-cast -fsanitize-trap=cfi-derived-cast | FileCheck %s
   2
   3 struct foo {
   4   virtual ~foo() {}
   5   virtual void f() = 0;
   6 };
   7
   8 template <typename T>
   9 struct bar : virtual public foo {
  10   void f() {
  11     // CHECK: define{{.*}}@"?f@?$bar@Ubaz@@@@UEAAXXZ"
  12     // Load "this", vbtable, vbase offset and vtable.
  13     // CHECK: load
  14     // CHECK: load
  15     // CHECK: load
  16     // CHECK: load
  17     // CHECK: @llvm.type.test{{.*}}!"?AUfoo@@"
  18     static_cast<T&>(*this);
  19   }
  20 };
  21
  22 struct baz : public bar<baz> {
  23   virtual ~baz() {}
  24 };
  25
  26 int main() {
  27   baz *z = new baz;
  28   z->f();
  29 }