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// RUN: rm -rf %t
// RUN: mkdir %t
// RUN: split-file %s %t
//
// RUN: %clang_cc1 -x c++ -std=c++20 %t/A.cppm -I%t -emit-module-interface -o %t/A.pcm
// RUN: %clang_cc1 -x c++ -std=c++20 %t/B.cppm -I%t -emit-module-interface -o %t/B.pcm
// RUN: %clang_cc1 -x c++ -std=c++20 -fprebuilt-module-path=%t %t/foo.cpp -verify
//
// RUN: rm %t/A.pcm %t/B.pcm
// RUN: %clang_cc1 -x c++ -std=c++20 %t/A.cppm -I%t -emit-reduced-module-interface -o %t/A.pcm
// RUN: %clang_cc1 -x c++ -std=c++20 %t/B.cppm -I%t -emit-reduced-module-interface -o %t/B.pcm
// RUN: %clang_cc1 -x c++ -std=c++20 -fprebuilt-module-path=%t %t/foo.cpp -verify
//--- foo.h
template <class T>
concept A = true;
//--- bar.h
template <class T>
concept A = false;
//--- A.cppm
module;
#include "foo.h"
export module A;
export using ::A;
//--- B.cppm
module;
#include "bar.h"
export module B;
export using ::A;
//--- foo.cpp
import A;
import B;
template <class T> void foo() requires A<T> {} // expected-error 1+{{reference to 'A' is ambiguous}}
// expected-note@* 1+{{candidate found by name lookup}}
int main() {
foo<int>();
return 0;
}
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