| 1 | // RUN: %clang_cc1 -fsyntax-only -verify %s |
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| 2 | |
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| 3 | // This is not well-formed C++ but used to crash in sema. |
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| 4 | |
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| 5 | template <class T> |
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| 6 | struct X { |
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| 7 | template <class U> |
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| 8 | struct A { // expected-note {{not-yet-instantiated member is declared here}} |
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| 9 | template <class V> |
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| 10 | struct B { |
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| 11 | template <class W> |
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| 12 | struct C { |
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| 13 | template <class X> |
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| 14 | struct D { |
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| 15 | template <class Y> |
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| 16 | struct E { |
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| 17 | template <class Z> |
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| 18 | void operator+=(Z); |
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| 19 | }; |
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| 20 | }; |
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| 21 | }; |
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| 22 | }; |
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| 23 | }; |
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| 24 | |
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| 25 | template <class U> |
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| 26 | template <class V> |
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| 27 | template <class W> |
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| 28 | template <class X> |
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| 29 | template <class Y> |
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| 30 | template <class Z> |
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| 31 | friend void A<U>::template B<V>::template C<W>::template D<X>::template E<Y>::operator+=(Z); // expected-warning {{not supported}} expected-error {{no member 'A' in 'X<int>'; it has not yet been instantiated}} |
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| 32 | }; |
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| 33 | |
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| 34 | void test() { |
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| 35 | X<int>::A<int>::B<int>::C<int>::D<int>::E<int>() += 1.0; // expected-note {{in instantiation of template class 'X<int>' requested here}} |
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| 36 | } |
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| 37 | |
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