cde139016a
The type alias template is not diagnosed when instantiating an expected non-type template argument in a dependent scope, causing ICE. Besides that, the diagnostic message has been updated to account for the fact that the function template is not the only non-type template. Fixes #62533 Reviewed By: #clang-language-wg, erichkeane Differential Revision: https://reviews.llvm.org/D151062
34 lines
1.3 KiB
C++
34 lines
1.3 KiB
C++
// RUN: %clang_cc1 -fsyntax-only -verify %s
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template<typename T>
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struct test {
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template<typename> using fun_diff = char; // expected-note 2{{class template declared here}}
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};
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template<typename T, typename V>
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decltype(T::template fun_diff<V>) foo1() {}
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// expected-note@-1 {{candidate template ignored: substitution failure [with T = test<int>, V = int]: 'test<int>::fun_diff' is expected to be a non-type template, but instantiated to a type alias template}}
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template<typename T>
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void foo2() {
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// expected-error@+1 {{test<int>::fun_diff' is expected to be a non-type template, but instantiated to a type alias template}}
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int a = test<T>::template fun_diff<int>;
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}
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template<typename T, typename V>
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struct has_fun_diff {
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using type = double;
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};
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template<typename T>
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struct has_fun_diff<T, int> {
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// expected-error@+1 {{'test<int>::fun_diff' is expected to be a non-type template, but instantiated to a type alias template}}
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using type = decltype(T::template fun_diff<int>);
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};
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void bar() {
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foo1<test<int>, int>(); // expected-error {{no matching function for call to 'foo1'}}
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foo2<int>(); // expected-note {{in instantiation of function template specialization}}
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has_fun_diff<test<int>, int>::type a; // expected-note {{in instantiation of template class}}
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}
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