ab5a5a90c0
Close https://github.com/llvm/llvm-project/issues/138558 The compiler failed to understand the redeclaration-relationship when performing checks when MergeFunctionDecl. This seemed to be a complex circular problem (how can we know the redeclaration relationship before performing merging?). But the fix seems to be easy and safe. It is fine to only perform the check only if the using decl is a local decl.
55 lines
1.2 KiB
C++
55 lines
1.2 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++20 %t/a.cppm -emit-reduced-module-interface -o %t/test-A.pcm
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// RUN: %clang_cc1 -std=c++20 %t/N.cppm -emit-reduced-module-interface -o %t/test-N.pcm
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// RUN: %clang_cc1 -std=c++20 %t/B.cppm -verify -fsyntax-only -fprebuilt-module-path=%t
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//--- a.h
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namespace N {
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inline namespace impl {
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template <typename>
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class C {
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template <typename> friend void foo();
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};
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template <typename> void foo() {}
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} // namespace impl
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} // namespace N
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//--- a.cppm
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// This is some unrelated file. It also #includes system headers, but
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// here does not even export anything.
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module;
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#include "a.h"
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export module test:A;
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// To make sure they won't elided.
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using N::C;
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using N::foo;
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//--- N.cppm
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module;
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#include "a.h"
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export module test:N;
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// Now wrap these names into a module and export them:
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export {
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namespace N {
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inline namespace impl {
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using N::impl::C;
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using N::impl::foo;
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}
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}
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}
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//--- B.cppm
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// expected-no-diagnostics
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// A file that consumes the partitions from the other two files,
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// including the exported N::C name.
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module test:B;
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import :N;
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import :A;
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N::C<int> x;
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