llvm-project/clang/test/SemaCXX/PR6562.cpp

// RUN: %clang_cc1 -fsyntax-only -verify %s
// expected-no-diagnostics

struct X { ~X(); };
template <typename T>
struct A {
  struct B { X x; };
  struct C : public B {
    C() : B() { }
  };
};