0c4f0bf40d
Closes https://github.com/llvm/llvm-project/issues/58196. The root cause for the problem is an oversight in https://reviews.llvm.org/D127624, which allows the redeclarations in partitions. However, we took a mistake there that we should only allow it if the redeclarations in the one same module instead of return directly if either the redeclaration lives in a partition. The original implementation makes no sense and I believe it was an oversight.
50 lines
1.7 KiB
C++
50 lines
1.7 KiB
C++
// RUN: rm -fr %t
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// RUN: mkdir %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/B.cppm -I%t -emit-module-interface -o %t/B.pcm
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// RUN: %clang_cc1 -std=c++20 -fsyntax-only %t/A.cppm -I%t -fprebuilt-module-path=%t -verify
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//
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// RUN: %clang_cc1 -std=c++20 %t/D.cppm -I%t -emit-module-interface -o %t/D.pcm
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// RUN: %clang_cc1 -std=c++20 -fsyntax-only %t/D-part.cppm -I%t -fprebuilt-module-path=%t -verify
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//--- A.cppm
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module;
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export module baz:A;
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import B;
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#include "C.h"
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//--- B.cppm
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module;
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#include "C.h"
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export module B;
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//--- C.h
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namespace foo {
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template<class T, class U> struct bar { // expected-error {{declaration of 'bar' in module baz:A follows declaration in the global module}} // expected-note {{previous declaration is here}}
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template<class, class> bar(T, U);
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};
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template<class T, class U> bar(T, U) -> bar<T, U>; // expected-error {{declaration of '<deduction guide for bar>' in module baz:A follows declaration in the global module}} // expected-note {{previous declaration is here}}
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}
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//--- D.cppm
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// Tests that it is still problematic if they are in one module.
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module;
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#include "E.h"
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export module D;
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//--- D-part.cppm
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export module D:part;
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import D;
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#include "E.h"
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//--- E.h
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// another file for simpler diagnostics.
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namespace foo {
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template<class T, class U> struct bar { // expected-error {{declaration of 'bar' in module D:part follows declaration in the global module}} // expected-note {{previous declaration is here}}
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template<class, class> bar(T, U);
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};
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template<class T, class U> bar(T, U) -> bar<T, U>; // expected-error {{declaration of '<deduction guide for bar>' in module D:part follows declaration in the global module}} // expected-note {{previous declaration is here}}
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}
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