forked from OSchip/llvm-project
71 lines
1.8 KiB
C++
71 lines
1.8 KiB
C++
// RUN: %clang_cc1 -std=c++0x -fsyntax-only -verify %s
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template<typename S>
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struct A {
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typedef S B;
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template<typename T> using C = typename T::B;
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template<typename T> struct D {
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template<typename U> using E = typename A<U>::template C<A<T>>;
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template<typename U> using F = A<E<U>>;
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template<typename U> using G = C<F<U>>;
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G<T> g;
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};
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typedef decltype(D<B>().g) H;
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D<H> h;
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template<typename T> using I = A<decltype(h.g)>;
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template<typename T> using J = typename A<decltype(h.g)>::template C<I<T>>;
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};
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A<int> a;
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A<char>::D<double> b;
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template<typename T> T make();
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namespace X {
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template<typename T> struct traits {
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typedef T thing;
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typedef decltype(val(make<thing>())) inner_ptr;
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template<typename U> using rebind_thing = typename thing::template rebind<U>;
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template<typename U> using rebind = traits<rebind_thing<U>>;
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inner_ptr &&alloc();
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void free(inner_ptr&&);
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};
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template<typename T> struct ptr_traits {
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typedef T *type;
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};
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template<typename T> using ptr = typename ptr_traits<T>::type;
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template<typename T> struct thing {
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typedef T inner;
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typedef ptr<inner> inner_ptr;
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typedef traits<thing<inner>> traits_type;
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template<typename U> using rebind = thing<U>;
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thing(traits_type &traits) : traits(traits), val(traits.alloc()) {}
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~thing() { traits.free(static_cast<inner_ptr&&>(val)); }
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traits_type &traits;
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inner_ptr val;
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friend inner_ptr val(const thing &t) { return t.val; }
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};
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template<> struct ptr_traits<bool> {
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typedef bool &type;
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};
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template<> bool &traits<thing<bool>>::alloc() { static bool b; return b; }
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template<> void traits<thing<bool>>::free(bool&) {}
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}
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typedef X::traits<X::thing<int>> itt;
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itt::thing::traits_type itr;
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itt::thing ith(itr);
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itt::rebind<bool> btr;
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itt::rebind_thing<bool> btt(btr);
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