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ba15d186e5
During the ISO C++ Committee meeting plenary session the C++23 Standard has been voted as technical complete. This updates the reference to c++2b to c++23 and updates the __cplusplus macro. Drive-by fixes c++1z -> c++17 and c++2a -> c++20 when seen. Reviewed By: aaron.ballman Differential Revision: https://reviews.llvm.org/D149553
66 lines
1.6 KiB
C++
66 lines
1.6 KiB
C++
// RUN: rm -rf %t
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// RUN: mkdir -p %t
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// RUN: split-file %s %t
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//
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// RUN: %clang_cc1 -std=c++23 %t/A.cppm -emit-module-interface -o %t/A.pcm
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// RUN: %clang_cc1 -std=c++23 %t/Use.cpp -fprebuilt-module-path=%t -fsyntax-only -verify
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//--- A.cppm
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module;
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export module A;
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struct B {};
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export template<int N> struct A : B {
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friend constexpr const int *f(B) requires true {
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static constexpr int result = N;
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return &result;
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}
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template<int M>
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friend constexpr const int *g(B) requires (M >= 0) && (N >= 0) {
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static constexpr int result = M * 10 + N;
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return &result;
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}
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};
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export inline A<1> a1;
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export inline A<2> a2;
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export inline A<3> a3;
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static_assert(f(a1) != f(a2) && f(a2) != f(a3));
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static_assert(g<1>(a1) != g<1>(a2) && g<1>(a2) != g<1>(a3));
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static_assert(*f(a1) == 1);
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static_assert(*f(a2) == 2);
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static_assert(*f(a3) == 3);
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static_assert(*g<4>(a1) == 41);
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static_assert(*g<5>(a2) == 52);
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static_assert(*g<6>(a3) == 63);
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//--- Use.cpp
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// expected-no-diagnostics
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import A;
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// Try some instantiations we tried before and some we didn't.
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static_assert(f(a1) != f(a2) && f(a2) != f(a3));
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static_assert(g<1>(a1) != g<1>(a2) && g<1>(a2) != g<1>(a3));
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static_assert(g<2>(a1) != g<2>(a2) && g<2>(a2) != g<2>(a3));
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A<4> a4;
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static_assert(f(a1) != f(a4) && f(a2) != f(a4) && f(a3) != f(a4));
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static_assert(g<3>(a1) != g<3>(a4));
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static_assert(*f(a1) == 1);
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static_assert(*f(a2) == 2);
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static_assert(*f(a3) == 3);
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static_assert(*f(a4) == 4);
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static_assert(*g<4>(a1) == 41);
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static_assert(*g<5>(a2) == 52);
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static_assert(*g<6>(a3) == 63);
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static_assert(*g<7>(a1) == 71);
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static_assert(*g<8>(a4) == 84);
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