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  1. template <typename derived>
  2. struct test_base {
  3.   derived baz() { return *static_cast<derived *>(this); }
  4. };
  5.  
  6. template <int N>
  7. struct test : public test_base<test<N>> {
  8. };
  9.  
  10. template <>
  11. struct test<2> : public test_base<test<2>> {
  12.   test bar() { return *this; }
  13. };
  14.  
  15. int main() {
  16.   test<1> a = {};
  17.   test<2> b = {};
  18.  
  19.   auto c = a.baz();
  20.   auto d = b.baz();
  21.   auto e = b.bar();
  22.  
  23.   if (&c && &d && &e)
  24.     return 0;
  25.   else
  26.     return 1;
  27. }
Success #stdin #stdout 0s 3336KB
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https://ideone.com/JdRweA
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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