67 lines
1.8 KiB
C++
67 lines
1.8 KiB
C++
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// 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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// RUN: cd %t
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//
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// RUN: %clang_cc1 -std=c++20 M.cpp -emit-module-interface -o M.pcm
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// RUN: %clang_cc1 -std=c++20 N.cpp -emit-module-interface -o N.pcm \
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// RUN: -fmodule-file=M=M.pcm
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// RUN: %clang_cc1 -std=c++20 Q.cpp -emit-module-interface -o Q.pcm
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// RUN: %clang_cc1 -std=c++20 Q-impl.cpp -fsyntax-only -fmodule-file=Q=Q.pcm \
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// RUN: -fmodule-file=N=N.pcm -fmodule-file=M=M.pcm -verify
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//--- M.cpp
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export module M;
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namespace R {
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export struct X {};
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export void f(X);
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} // namespace R
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namespace S {
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export void f(R::X, R::X);
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}
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//--- N.cpp
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export module N;
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import M;
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export R::X make();
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namespace R {
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static int g(X);
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}
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export template <typename T, typename U>
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void apply(T t, U u) {
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f(t, u);
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g(t);
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}
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//--- Q.cpp
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export module Q;
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//--- Q-impl.cpp
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module Q;
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import N;
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namespace S {
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struct Z {
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template <typename T> operator T();
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};
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} // namespace S
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void test() {
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// OK, decltype(x) is R::X in module M
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auto x = make();
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// error: R and R::f are not visible here
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R::f(x); // expected-error {{no type named 'f' in namespace 'R'}}
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f(x); // Found by [basic.lookup.argdep] / p4.3
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// error: S::f in module M not considered even though S is an associated
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// namespace, since the entity Z is in a different module from f.
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f(x, S::Z()); // expected-error {{no matching function for call to 'f'}}
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// expected-note@M.cpp:4 {{candidate function not viable: requires 1 argument, but 2 were provided}}
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// error: S::f is visible in instantiation context, but R::g has internal
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// linkage and cannot be used outside N.cpp
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apply(x, S::Z()); // expected-error@N.cpp:10 {{no matching function for call to 'g'}}
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// expected-note@-1 {{in instantiation of function template specialization 'apply<R::X, S::Z>' requested here}}
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}
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