60a3784b3e
Close https://github.com/llvm/llvm-project/issues/62589. Previously, for global module fragments, we will justify if it is visible by the visibility of their top level parents. But this is an overkill, it is problematic if we have a deduction guide in the global module fragments. See the attached test for example. In this example, we will mark the global module fragments as visible, but our old strategy will miss the case surprisingly due to we will only search for the top level modules.
80 lines
1.4 KiB
C++
80 lines
1.4 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 -emit-module-interface %t/a.cppm -o %t/a.pcm
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// RUN: %clang_cc1 -std=c++23 %t/b.cpp -fmodule-file=a=%t/a.pcm -fsyntax-only -verify
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//--- foo.h
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class TypeA {};
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template<class _Tp, class _Up>
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concept __comparable = requires (_Tp &&__t, _Up &&__u) {
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__t == __u;
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};
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namespace ranges {
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namespace __end {
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template <class _Tp>
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concept __member_end =
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requires(_Tp&& __t) {
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{ __t.end() } -> __comparable<TypeA>;
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};
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struct __fn {
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template <class _Tp>
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requires __member_end<_Tp>
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constexpr auto operator()(_Tp&& __t) const
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{
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return true;
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}
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void operator()(auto&&) const = delete;
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};
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}
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inline namespace __cpo {
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inline constexpr auto end = __end::__fn{};
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}
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}
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template <class _Tp>
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concept range = requires(_Tp& __t) {
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ranges::end(__t);
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};
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template <class T>
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class a {
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public:
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a(T*) {}
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TypeA end() { return {}; }
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};
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template <class T>
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class a_view {
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public:
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template <class U>
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a_view(a<U>) {}
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};
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template <range _Range>
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a_view(_Range) -> a_view<int>;
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constexpr bool operator==(TypeA, TypeA) {
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return true;
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}
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//--- a.cppm
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module;
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#include "foo.h"
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export module a;
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export using ::a;
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export using ::a_view;
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//--- b.cpp
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// expected-no-diagnostics
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import a;
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void use() {
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auto _ = a{"char"};
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auto __ = a_view{_};
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}
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