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// From https://github.com/llvm/llvm-project/issues/77953
// RUN: rm -rf %t
// RUN: mkdir -p %t
// RUN: split-file %s %t
// RUN: %clang_cc1 -std=c++20 -emit-module-interface %t/a.cppm -o %t/a.pcm
// RUN: %clang_cc1 -std=c++20 -fmodule-file=a=%t/a.pcm %t/b.cpp -fsyntax-only -verify
//--- a.cppm
export module a;
template<typename, typename>
concept c = true;
export template<typename... Ts>
struct a {
template<typename... Us> requires(... and c<Ts, Us>)
friend bool operator==(a, a<Us...>) {
return true;
}
};
template struct a<>;
//--- b.cpp
// expected-no-diagnostics
import a;
template struct a<int>;
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