48 lines
2.5 KiB
C++
48 lines
2.5 KiB
C++
// RUN: %clang_cc1 -std=c++98 %s -verify=expected -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++11 %s -verify=expected -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++14 %s -verify=expected,since-cxx14 -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++17 %s -verify=expected,since-cxx14 -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++20 %s -verify=expected,since-cxx14 -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++23 %s -verify=expected,since-cxx14 -fexceptions -fcxx-exceptions -pedantic-errors
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// RUN: %clang_cc1 -std=c++2c %s -verify=expected,since-cxx14 -fexceptions -fcxx-exceptions -pedantic-errors
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#if __cplusplus <= 201103L
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// expected-no-diagnostics
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#endif
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namespace dr2335 { // dr2335: no drafting
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// FIXME: current consensus is that the examples are well-formed.
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#if __cplusplus >= 201402L
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namespace ex1 {
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template <class...> struct partition_indices {
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static auto compute_right() {}
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static constexpr auto right = compute_right;
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};
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template struct partition_indices<int>;
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} // namespace ex1
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namespace ex2 {
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template <int> struct X {};
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template <class T> struct partition_indices {
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static auto compute_right() { return X<I>(); }
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// since-cxx14-error@-1 {{no member 'I' in 'dr2335::ex2::partition_indices<int>'; it has not yet been instantiated}}
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// since-cxx14-note@#dr2335-ex2-right {{in instantiation of member function 'dr2335::ex2::partition_indices<int>::compute_right' requested here}}
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// since-cxx14-note@#dr2335-ex2-inst {{in instantiation of template class 'dr2335::ex2::partition_indices<int>' requested here}}
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// since-cxx14-note@#dr2335-ex2-I {{not-yet-instantiated member is declared here}}
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static constexpr auto right = compute_right; // #dr2335-ex2-right
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static constexpr int I = sizeof(T); // #dr2335-ex2-I
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};
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template struct partition_indices<int>; // #dr2335-ex2-inst
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} // namespace ex2
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namespace ex3 {
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struct partition_indices {
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static auto compute_right() {} // #dr2335-compute_right
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static constexpr auto right = compute_right; // #dr2335-ex3-right
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// since-cxx14-error@-1 {{function 'compute_right' with deduced return type cannot be used before it is defined}}
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// since-cxx14-note@#dr2335-compute_right {{'compute_right' declared here}}
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// since-cxx14-error@#dr2335-ex3-right {{declaration of variable 'right' with deduced type 'const auto' requires an initializer}}
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};
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} // namespace ex3
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#endif
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} // namespace dr2335
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