23 lines
932 B
C++
23 lines
932 B
C++
// RUN: %clang_cc1 -std=c++11 -verify %s
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struct Q { typedef int type; };
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// "The substitution occurs in all types and expressions that are used in [...]
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// template parameter declarations." In particular, we must substitute into the
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// type of a parameter pack that is not a pack expansion, even if we know the
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// corresponding argument pack is empty.
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template<typename T, typename T::type...> void a(T);
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int &a(...);
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int &a_disabled = a(0);
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int &a_enabled = a(Q()); // expected-error {{cannot bind to a temporary of type 'void'}}
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template<typename T, template<typename T::type> class ...X> void b(T);
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int &b(...);
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int &b_disabled = b(0);
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int &b_enabled = b(Q()); // expected-error {{cannot bind to a temporary of type 'void'}}
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template<typename T, template<typename T::type...> class ...X> void c(T);
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int &c(...);
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int &c_disabled = c(0);
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int &c_enabled = c(Q()); // expected-error {{cannot bind to a temporary of type 'void'}}
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