47 lines
1.1 KiB
C++
47 lines
1.1 KiB
C++
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// RUN: %clang_cc1 -std=c++20 -emit-pch -o %t.a %s
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// RUN: %clang_cc1 -std=c++20 -include-pch %t.a %s -verify
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#ifndef HEADER
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#define HEADER
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namespace preferred_name {
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template<typename T> struct X;
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using Y = X<int>;
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using Z = X<float>;
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template<typename T> struct [[using clang: preferred_name(Y), preferred_name(Z)]] X {};
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Y y;
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}
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namespace aligned {
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// PR48434: ensure attributes don't introduce deserialization cycles.
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template<typename T> struct X1;
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using Y1 = X1<int>;
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template<typename T> struct alignas(Y1*) X1 {};
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Y1 y1;
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template<typename T> struct X2;
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using Y2 = X2<int>;
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template<typename T> struct alignas(Y2*) X2 {};
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}
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#else
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namespace preferred_name {
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Z z;
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template<typename T> T forget(T t) { return t; }
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void f() {
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forget(y).foo(); // expected-error {{no member named 'foo' in 'preferred_name::Y'}}
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forget(z).foo(); // expected-error {{no member named 'foo' in 'preferred_name::Z'}}
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}
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}
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namespace aligned {
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extern Y1 y1;
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extern Y2 y2;
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static_assert(alignof(Y1) == alignof(Y1*), "");
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static_assert(alignof(Y2) == alignof(Y2*), "");
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}
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#endif
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